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TV cell phones in Japan
As a customer of a Japanese cell phone service provider, I've been
tracking the new cell phone offerings, and in particular have been looking for the TV cell phones with COFDM digital tuners that a certain person says are "flying off the shelves in Japan." So far, I haven't seen any. What I have seen are lots of 2G cell phones with *analog* terrestrial TV tuners. In fact, a new one is being released on Saturday (Vodafone's V604SH, made by Sharp). No 3G phones seem to have terrestrial TV tuners of any kind, although all have the ability to download and play video content from the service provider. I said a year ago that portable (especially handheld) COFDM terrestrial digital TVs are vaporware in Japan. Today, a year later, portable COFDM terrestrial digital TVs remain vaporware. The claims that the US is "far behind Japan" in digital OTA HDTV remain bull****. Most Japanese who have HDTV use satellite, not OTA. -- Mark -- http://panda.com/mrc Democracy is two wolves and a sheep deciding what to eat for lunch. Liberty is a well-armed sheep contesting the vote. |
TV cell phones in Japan
I expect to be visiting Japan again fairly soon, and I expect my host is
going to be tiring of my constant interest about all of this. As an aside, I still think its amazing that [in July 2004] I actually saw a functional Sony Blu-ray unit in an Akihabara store. "Mark Crispin" wrote in message .com... As a customer of a Japanese cell phone service provider, I've been tracking the new cell phone offerings, and in particular have been looking for the TV cell phones with COFDM digital tuners that a certain person says are "flying off the shelves in Japan." So far, I haven't seen any. What I have seen are lots of 2G cell phones with *analog* terrestrial TV tuners. In fact, a new one is being released on Saturday (Vodafone's V604SH, made by Sharp). No 3G phones seem to have terrestrial TV tuners of any kind, although all have the ability to download and play video content from the service provider. I said a year ago that portable (especially handheld) COFDM terrestrial digital TVs are vaporware in Japan. Today, a year later, portable COFDM terrestrial digital TVs remain vaporware. The claims that the US is "far behind Japan" in digital OTA HDTV remain bull****. Most Japanese who have HDTV use satellite, not OTA. -- Mark -- http://panda.com/mrc Democracy is two wolves and a sheep deciding what to eat for lunch. Liberty is a well-armed sheep contesting the vote. |
TV cell phones in Japan
I saw DVD recorders in Akihabara at least 18 months before they showed up in
the U.S., and also saw High Definition TV (the earlier "MUSE" analog variety) being displayed in several of the train stations in Tokyo, Kyoto, Yokahama, etc. 14 years ago in the summer of 1991. Blu-ray is apparently used routinely for high capacity data storage drives, but I am now wondering if any Blue-ray HD video players and program material are being released in Japan. I have not read of any. Smarty "David" wrote in message ... I expect to be visiting Japan again fairly soon, and I expect my host is going to be tiring of my constant interest about all of this. As an aside, I still think its amazing that [in July 2004] I actually saw a functional Sony Blu-ray unit in an Akihabara store. "Mark Crispin" wrote in message .com... As a customer of a Japanese cell phone service provider, I've been tracking the new cell phone offerings, and in particular have been looking for the TV cell phones with COFDM digital tuners that a certain person says are "flying off the shelves in Japan." So far, I haven't seen any. What I have seen are lots of 2G cell phones with *analog* terrestrial TV tuners. In fact, a new one is being released on Saturday (Vodafone's V604SH, made by Sharp). No 3G phones seem to have terrestrial TV tuners of any kind, although all have the ability to download and play video content from the service provider. I said a year ago that portable (especially handheld) COFDM terrestrial digital TVs are vaporware in Japan. Today, a year later, portable COFDM terrestrial digital TVs remain vaporware. The claims that the US is "far behind Japan" in digital OTA HDTV remain bull****. Most Japanese who have HDTV use satellite, not OTA. -- Mark -- http://panda.com/mrc Democracy is two wolves and a sheep deciding what to eat for lunch. Liberty is a well-armed sheep contesting the vote. |
TV cell phones in Japan
For more information
http://www.dibeg.org/news/news-4/news-e4.htm#dn058e "On September 27, the Association for the Promotion of Digital Broadcasting (D-PA) formally announced the spring 2006 launch of a broadcasting service targeting mobile phones and terminals." If this goes as other such in Japan expect every cell phone in Japan to have this in a few years. They also seem to be doing pretty well in HDTV. They give a figure of over 6 million OTA digital terrestrial not satellite receivers sold. http://www.dibeg.org/news/news-4/news-e4.htm#dn059e Not bad JS Mark Crispin wrote: As a customer of a Japanese cell phone service provider, I've been tracking the new cell phone offerings, and in particular have been looking for the TV cell phones with COFDM digital tuners that a certain person says are "flying off the shelves in Japan." So far, I haven't seen any. What I have seen are lots of 2G cell phones with *analog* terrestrial TV tuners. In fact, a new one is being released on Saturday (Vodafone's V604SH, made by Sharp). No 3G phones seem to have terrestrial TV tuners of any kind, although all have the ability to download and play video content from the service provider. I said a year ago that portable (especially handheld) COFDM terrestrial digital TVs are vaporware in Japan. Today, a year later, portable COFDM terrestrial digital TVs remain vaporware. The claims that the US is "far behind Japan" in digital OTA HDTV remain bull****. Most Japanese who have HDTV use satellite, not OTA. -- Mark -- http://panda.com/mrc Democracy is two wolves and a sheep deciding what to eat for lunch. Liberty is a well-armed sheep contesting the vote. |
TV cell phones in Japan
David wrote:
I expect to be visiting Japan again fairly soon, and I expect my host is going to be tiring of my constant interest about all of this. As an aside, I still think its amazing that [in July 2004] I actually saw a functional Sony Blu-ray unit in an Akihabara store. "Mark Crispin" wrote in message .com... As a customer of a Japanese cell phone service provider, I've been tracking the new cell phone offerings, and in particular have been looking for the TV cell phones with COFDM digital tuners that a certain person says are "flying off the shelves in Japan." So far, I haven't seen any. What I have seen are lots of 2G cell phones with *analog* terrestrial TV tuners. In fact, a new one is being released on Saturday (Vodafone's V604SH, made by Sharp). No 3G phones seem to have terrestrial TV tuners of any kind, although all have the ability to download and play video content from the service provider. I said a year ago that portable (especially handheld) COFDM terrestrial digital TVs are vaporware in Japan. Today, a year later, portable COFDM terrestrial digital TVs remain vaporware. The claims that the US is "far behind Japan" in digital OTA HDTV remain bull****. Most Japanese who have HDTV use satellite, not OTA. -- Mark -- http://panda.com/mrc Democracy is two wolves and a sheep deciding what to eat for lunch. Liberty is a well-armed sheep contesting the vote. Hi, Japanese TV has different channel allocation. Tony |
TV cell phones in Japan
JamieS ) wrote in alt.tv.tech.hdtv:
They also seem to be doing pretty well in HDTV. They give a figure of over 6 million OTA digital terrestrial not satellite receivers sold. http://www.dibeg.org/news/news-4/news-e4.htm#dn059e Not bad It would be pretty good if those were purchases of standalone OTA digital receivers because people wanted to get OTA digital. The reality is that every new TV comes with an integrated OTA digital receiver, so you get one whether you want it or not. In the case of Japan, most people don't want or use those receivers, but instead use satellite for their HD. -- Jeff Rife | "He's an investment banker from Amsterdam. | Apparently he handles a lot of Bill Gates' | money, so, don't say anything derogatory | about the Netherlands or Microsoft." | "Oh, damn...there goes my opening joke about | the Dutchman trying to install Windows 95." | -- Niles and Frasier |
TV cell phones in Japan
Jeff Rife wrote:
JamieS ) wrote in alt.tv.tech.hdtv: They also seem to be doing pretty well in HDTV. They give a figure of over 6 million OTA digital terrestrial not satellite receivers sold. http://www.dibeg.org/news/news-4/news-e4.htm#dn059e Not bad It would be pretty good if those were purchases of standalone OTA digital receivers because people wanted to get OTA digital. The reality is that every new TV comes with an integrated OTA digital receiver, so you get one whether you want it or not. In the case of Japan, most people don't want or use those receivers, but instead use satellite for their HD. According to the same site http://www.dibeg.org/news/news-4/news-e4.htm#dn059e "[Digital terrestrial TVs] For September, digital terrestrial TVs accounted for 37.1% of all color TV shipments. Classified by display type, digital terrestrial CRT sets accounted for 2.9% of CRT sets, while digital terrestrial TVs accounted for 99.5% of PDP sets and 57.7% of LCD sets, respectively. For digital terrestrial TVs, shipments of CRT sets continue to decline while those of flat panel displays (FPDs) grow remarkably." According to this the "reality" is far different than what you say above. In fact even the plasma display numbers show a steady increase in the percentage that are ready for digital terrestrial from 95% last February to 98% now and LCD's from 45% then to 58% now. It would seem the consumer in Japan is deciding they want terrestrial receivers from these statistics. JS |
TV cell phones in Japan
JamieS ) wrote in alt.tv.tech.hdtv:
According to the same site http://www.dibeg.org/news/news-4/news-e4.htm#dn059e "[Digital terrestrial TVs] For September, digital terrestrial TVs accounted for 37.1% of all color TV shipments. Classified by display type, digital terrestrial CRT sets accounted for 2.9% of CRT sets, while digital terrestrial TVs accounted for 99.5% of PDP sets and 57.7% of LCD sets, respectively. For digital terrestrial TVs, shipments of CRT sets continue to decline while those of flat panel displays (FPDs) grow remarkably." According to this the "reality" is far different than what you say above. Um, can't read very well, can you? From that very link you presented: (thousands) Digital terrestrial TVs 3,860 Digital recorders 373 Digital terrestrial tuners 158 (including adaptive receivers) Cable TV STBs 1,781 ===== Total 6,171 Note that add-on STBs make up a grand total of 2.6% of total digital OTA tuners sold. Cable STBs and TVs (both with built in digital OTA tuners) make uf the vast majority of the digital OTA tuners sold in Japan, but they are not being sold because they are digital OTA tuners...they are being sold because they are included in products that people want for other reasons. So, the reality that I presented was quite accurate...people in Japan aren't buying digital TV tuners because they want to...they are doing it because they *have* to because the devices they really want (TVs, cable boxes, and DVD recorders) have the tuner included, even if it is never used. This is similar to the situation with speakers on many large TVs today...you get them even though you use your home theater for sound. If the FCC had done the right thing 5 years ago and required ATSC tuners in every 25" or larger TV, the numbers in the US would look pretty much the same, with most people ending up with digital tuners they didn't use (because, like Japan, they get their TV from cable, satellite, etc.). -- Jeff Rife | | http://www.nabs.net/Cartoons/Dilbert...dCoWorkers.gif |
TV cell phones in Japan
"Jeff Rife" wrote in message
... JamieS ) wrote in alt.tv.tech.hdtv: According to the same site http://www.dibeg.org/news/news-4/news-e4.htm#dn059e "[Digital terrestrial TVs] For September, digital terrestrial TVs accounted for 37.1% of all color TV shipments. Classified by display type, digital terrestrial CRT sets accounted for 2.9% of CRT sets, while digital terrestrial TVs accounted for 99.5% of PDP sets and 57.7% of LCD sets, respectively. For digital terrestrial TVs, shipments of CRT sets continue to decline while those of flat panel displays (FPDs) grow remarkably." According to this the "reality" is far different than what you say above. Um, can't read very well, can you? From that very link you presented: (thousands) Digital terrestrial TVs 3,860 Digital recorders 373 Digital terrestrial tuners 158 (including adaptive receivers) Cable TV STBs 1,781 ===== Total 6,171 Note that add-on STBs make up a grand total of 2.6% of total digital OTA tuners sold. Cable STBs and TVs (both with built in digital OTA tuners) make uf the vast majority of the digital OTA tuners sold in Japan, but they are not being sold because they are digital OTA tuners...they are being sold because they are included in products that people want for other reasons. So, the reality that I presented was quite accurate...people in Japan aren't buying digital TV tuners because they want to...they are doing it because they *have* to because the devices they really want (TVs, cable boxes, and DVD recorders) have the tuner included, even if it is never used. This is similar to the situation with speakers on many large TVs today...you get them even though you use your home theater for sound. If the FCC had done the right thing 5 years ago and required ATSC tuners in every 25" or larger TV, the numbers in the US would look pretty much the same, with most people ending up with digital tuners they didn't use (because, like Japan, they get their TV from cable, satellite, etc.). -- Jeff Rife | | http://www.nabs.net/Cartoons/Dilbert...dCoWorkers.gif It's interesting how "Jamie" behaves exactly like our beloved bob... |
TV cell phones in Japan
On Sat, 19 Nov 2005, Jeff Rife wrote:
So, the reality that I presented was quite accurate...people in Japan aren't buying digital TV tuners because they want to...they are doing it because they *have* to because the devices they really want (TVs, cable boxes, and DVD recorders) have the tuner included, even if it is never used. This is similar to the situation with speakers on many large TVs today...you get them even though you use your home theater for sound. Exactly. Several of my friends in Japan have TVs with terrestrial digital tuners, even though they do not live in the limited areas currently served by terrestrial digital TV. They have cable or satellite. -- Mark -- http://panda.com/mrc Democracy is two wolves and a sheep deciding what to eat for lunch. Liberty is a well-armed sheep contesting the vote. |
TV cell phones in Japan
On Fri, 18 Nov 2005, JamieS wrote:
http://www.dibeg.org/news/news-4/news-e4.htm#dn058e "On September 27, the Association for the Promotion of Digital Broadcasting (D-PA) formally announced the spring 2006 launch of a broadcasting service targeting mobile phones and terminals." Note that this is not the same as a cell phone digital TV. This is a mobile phone service that "will generally offer the same programs offered for conventional TV receivers" on one of the 13 segments of a broadcast signal. As in, one sub-channel will "generally offer" the same programs offered on the other 12 sub-channels. Note too that dibeg.org is a web page to promote Japan's ISDB-T system overseas. Their success is best shown by their map of different world digital broadcasting systems: http://www.dibeg.org/world/world.htm If this goes as other such in Japan expect every cell phone in Japan to have this in a few years. "In a few years", maybe. That is quite a bit different than "flying off the shelves" today. -- Mark -- http://panda.com/mrc Democracy is two wolves and a sheep deciding what to eat for lunch. Liberty is a well-armed sheep contesting the vote. |
TV cell phones in Japan
On Fri, 18 Nov 2005 21:21:07 -0500, JamieS
wrote: They also seem to be doing pretty well in HDTV. They give a figure of over 6 million OTA digital terrestrial not satellite receivers sold. http://www.dibeg.org/news/news-4/news-e4.htm#dn059e I read the link and don't see the phrase "not satellite" anywhere in it. The truth is, just about all of these receivers, stand-alone or integrated, are also satellite receivers. Are there any OTA receivers that don't have satellite now? I couldn't find one when I last looked about a year ago. |
TV cell phones in Japan
Mark Crispin wrote:
On Fri, 18 Nov 2005, JamieS wrote: http://www.dibeg.org/news/news-4/news-e4.htm#dn058e "On September 27, the Association for the Promotion of Digital Broadcasting (D-PA) formally announced the spring 2006 launch of a broadcasting service targeting mobile phones and terminals." Note that this is not the same as a cell phone digital TV. This is a mobile phone service that "will generally offer the same programs offered for conventional TV receivers" on one of the 13 segments of a broadcast signal. As in, one sub-channel will "generally offer" the same programs offered on the other 12 sub-channels. Could you explain why receiving digital TV on a cell phone with an ISDB-T COFDM receiver is not "cell phone digital TV"? This has got to be a semantic tortured answer if there ever was one. The parallel transmission of digital TV programs so that cell phones can receive "digital TV" programs being also broadcast in HD or SD is still "digital TV" to me. The simple fact is that most cell phones being sold in the world including the US will soon allow the reception of COFDM digital TV. ISDB-T will be used in Japan and maybe a few other countries. DVB-H and MediaFlow will be used in other countries including the US. T-DMB is being used in S. Korea. Note too that dibeg.org is a web page to promote Japan's ISDB-T system overseas. Their success is best shown by their map of different world digital broadcasting systems: http://www.dibeg.org/world/world.htm The success of COFDM based ISDB-T is only limited by the success of other COFDM modulations. If this goes as other such in Japan expect every cell phone in Japan to have this in a few years. "In a few years", maybe. That is quite a bit different than "flying off the shelves" today. Did I say that? Could you show that post of mine. Bob Miller -- Mark -- http://panda.com/mrc Democracy is two wolves and a sheep deciding what to eat for lunch. Liberty is a well-armed sheep contesting the vote. |
TV cell phones in Japan
Clyde Coffey wrote:
On Fri, 18 Nov 2005 21:21:07 -0500, JamieS wrote: They also seem to be doing pretty well in HDTV. They give a figure of over 6 million OTA digital terrestrial not satellite receivers sold. http://www.dibeg.org/news/news-4/news-e4.htm#dn059e I read the link and don't see the phrase "not satellite" anywhere in it. The truth is, just about all of these receivers, stand-alone or integrated, are also satellite receivers. Are there any OTA receivers that don't have satellite now? I couldn't find one when I last looked about a year ago. How do you prove a negative? It doesn't say "not satellite" so they all must include satellite? All of the cell phone and mobile DTV receivers will NOT include satellite receivers. Mobile HDTV receivers in buses and trains (and cars) will NOT also include satellites receivers. I don't know what percentage of the devices listed in this article ALSO include satellite receivers but that is not the point. The point is that there are now over 7 million terrestrial receivers sold in Japan. Mark suggest that people in Japan are being forced to buy OTA digital receivers because they are in ALL sets but the article suggest that is not true. The percentage of digital CRTs with OTA DTV receivers is only 2.9% while the percentage of PDP OTA DTV integrated sets has grown each month and a percentage does NOT include OTA. The customer has a choice. The percentage of LCD OTA DTV integrated sets is much lower, 58%, and has been growing steadily every month. This suggest that consumers again have a choice. At least 42% of them buy NON OTA DTV sets. That is to make it very clear, NOT ALL DIGITAL TV SETS SOLD IN JAPAN INCLUDE OTA DTV RECEIVERS. THE MARKET SEEMS TO BE DETERMINING HOW MANY IN FACT DO. 37.1% OF ALL COLOR TV SETS SOLD IN JAPAN ARE DIGITAL!! OF THAT 37.1%, 2.9% OF CRT'S, 99.5% OF PDP'S AND 57.7% OF LCD'S INCLUDE DIGITAL OTA RECEIVERS. ALL THESE NUMBERS ARE GROWING. SALES OF OTA DIGITAL INTEGRATED SETS HAVE GROWN 94% OVER SAME SALES FOR THE MONTH LAST YEAR. STB SALES HAVE GROWN 54%. If some people are buying integrated OTA digital sets without knowing it, not in anticipation of OTA reaching their neighborhood, so be it. That is a failure of marketing which should be selling the advantage of being prepared for OTA and what I think is happening. I believe Japanese consumers are pretty savvy. I think they know what they are buying. I don't think retailers in Japan would include things that cost more that the consumer is unaware of and which would make that dealer less competitive with another who would sell the same integrated satellite set with no OTA receiver for less. Of course I could be wrong and the Japanese consumer could be stupid. Good site for information on broadcasting in Japan. http://www.nhk.or.jp/strl/open2005/en/tenji/t10.html Mobile HD reception http://www.nhk.or.jp/strl/open2005/en/tenji/t20.html Bob Miller Bob Miller |
TV cell phones in Japan
"Bob Miller" wrote in message
ink.net... Clyde Coffey wrote: On Fri, 18 Nov 2005 21:21:07 -0500, JamieS wrote: They also seem to be doing pretty well in HDTV. They give a figure of over 6 million OTA digital terrestrial not satellite receivers sold. http://www.dibeg.org/news/news-4/news-e4.htm#dn059e I read the link and don't see the phrase "not satellite" anywhere in it. The truth is, just about all of these receivers, stand-alone or integrated, are also satellite receivers. Are there any OTA receivers that don't have satellite now? I couldn't find one when I last looked about a year ago. How do you prove a negative? It doesn't say "not satellite" so they all must include satellite? All of the cell phone and mobile DTV receivers will NOT include satellite receivers. Mobile HDTV receivers in buses and trains (and cars) will NOT also include satellites receivers. I don't know what percentage of the devices listed in this article ALSO include satellite receivers but that is not the point. The point is that there are now over 7 million terrestrial receivers sold in Japan. Mark suggest that people in Japan are being forced to buy OTA digital receivers because they are in ALL sets but the article suggest that is not true. The percentage of digital CRTs with OTA DTV receivers is only 2.9% while the percentage of PDP OTA DTV integrated sets has grown each month and a percentage does NOT include OTA. The customer has a choice. The percentage of LCD OTA DTV integrated sets is much lower, 58%, and has been growing steadily every month. This suggest that consumers again have a choice. At least 42% of them buy NON OTA DTV sets. That is to make it very clear, NOT ALL DIGITAL TV SETS SOLD IN JAPAN INCLUDE OTA DTV RECEIVERS. THE MARKET SEEMS TO BE DETERMINING HOW MANY IN FACT DO. 37.1% OF ALL COLOR TV SETS SOLD IN JAPAN ARE DIGITAL!! OF THAT 37.1%, 2.9% OF CRT'S, 99.5% OF PDP'S AND 57.7% OF LCD'S INCLUDE DIGITAL OTA RECEIVERS. ALL THESE NUMBERS ARE GROWING. SALES OF OTA DIGITAL INTEGRATED SETS HAVE GROWN 94% OVER SAME SALES FOR THE MONTH LAST YEAR. STB SALES HAVE GROWN 54%. If some people are buying integrated OTA digital sets without knowing it, not in anticipation of OTA reaching their neighborhood, so be it. That is a failure of marketing which should be selling the advantage of being prepared for OTA and what I think is happening. I believe Japanese consumers are pretty savvy. I think they know what they are buying. I don't think retailers in Japan would include things that cost more that the consumer is unaware of and which would make that dealer less competitive with another who would sell the same integrated satellite set with no OTA receiver for less. Of course I could be wrong and the Japanese consumer could be stupid. Good site for information on broadcasting in Japan. http://www.nhk.or.jp/strl/open2005/en/tenji/t10.html Mobile HD reception http://www.nhk.or.jp/strl/open2005/en/tenji/t20.html Bob Miller Bob Miller Your mobile/datacasting business would be much more lucrative if you spent more time cultivating it elsewhere... |
TV cell phones in Japan
On Mon, 21 Nov 2005, Bob Miller wrote:
Could you explain why receiving digital TV on a cell phone with an ISDB-T COFDM receiver is not "cell phone digital TV"? This has got to be a semantic tortured answer if there ever was one. Not at all. These cell phones in Japan (*when* they appear in April 2006 or later) will not have a television tuner that can receive arbitrary broadcast television channels (which current model cell phones with analog tuners can do). Rather, they will receive a *dedicated* signal for mobile devices, much like Muzak is carried on FM subcarriers. The dibeg.org web page indicates that this content is on one of 13 segments in a 6MHz bandwidth, and that the other 12 segments will offer programming for conventional TV receivers. That is a huge difference. The content received on the mobile device is not the same as what is received on large screen televisions in living rooms. At most, it is a subset. Maybe Psycho Bob expects that all broadcasters will use just two segments: one for conventional TV receivers and the other for mobile devices. We all know what plans Psycho Bob has for the other 11 segments. The other catch is that broadcasters have to decide to provide content for mobile devices in that segment. There is a cost to doing that, and enough advertiser revenue has to be generated for that purpose to support it. A mobile device with an analog TV tuner does not require the broadcasters to do anything; nor would a(n as-yet theoretical) mobile device with a digital TV tuner that receives the conventional TV signal. Given that, eventually, there will be mobile devices with digital TV tuners that receive the conventional TV signal, it is necessary to consider what the benefit would be in investing in technology that is limited to mobile devices and might have a short technological lifetime. I am skeptical. I saw numerous cell phones with analog TV tuners in Japan, and hardly anyone was using them to watch TV. Most people were emailing or playing games. The parallel transmission of digital TV programs so that cell phones can receive "digital TV" programs being also broadcast in HD or SD is still "digital TV" to me. Now you change the definition of "digital TV" to match the inconvenient facts. By that definition of "digital TV", then my current US cell phone is a "digital TV"; it can receive video content, and that content may correspond to something on one of the broadcast TV channels. The simple fact is that most cell phones being sold in the world including the US will soon allow the reception of COFDM digital TV. There are many cell phones in the world (including the USA) which will receive the same analog broadcasts that are received by TV sets in living rooms. Such devices are both cell phones and televisions. There are NO cell phones (real or announced) ANYWHERE in the world which will receive the same digital broadcasts that are received by TV sets in living rooms. A device which does not receive conventional television broadcasts is not a television. It is something else. Note too that dibeg.org is a web page to promote Japan's ISDB-T system overseas. Their success is best shown by their map of different world digital broadcasting systems: http://www.dibeg.org/world/world.htm The success of COFDM based ISDB-T is only limited by the success of other COFDM modulations. Too bad that is only in Japan, as the dibeg.org web page makes clear. -- Mark -- http://staff.washington.edu/mrc Science does not emerge from voting, party politics, or public debate. Si vis pacem, para bellum. |
TV cell phones in Japan
Mark Crispin ) wrote in alt.tv.tech.hdtv:
The parallel transmission of digital TV programs so that cell phones can receive "digital TV" programs being also broadcast in HD or SD is still "digital TV" to me. Now you change the definition of "digital TV" to match the inconvenient facts. And this sort of thing from Bob surprises you because...? By that definition of "digital TV", then my current US cell phone is a "digital TV"; it can receive video content, and that content may correspond to something on one of the broadcast TV channels. As you say, by Bob's definition, the ability to download TV shows that AOL is offering to users would be "digital TV", and if you happened to download it with a cell phone browser, that would be "digital TV on a cell phone". -- Jeff Rife | "You keep using that word. I do not think it | means what you think it means." | | -- Inigo Montoya, "The Princess Bride" |
TV cell phones in Japan
Jeff Rife wrote:
Mark Crispin ) wrote in alt.tv.tech.hdtv: The parallel transmission of digital TV programs so that cell phones can receive "digital TV" programs being also broadcast in HD or SD is still "digital TV" to me. Now you change the definition of "digital TV" to match the inconvenient facts. I have not changed my definition of digital TV at all. What definition are you talking about? What is Mark's definition of digital TV? In Australia they triple broadcast. Analog, a standard definition digital and an HD all of the same program at the same time. They are all digital TV. In Japan they broadcast an HD version and one for cell phones at the same time. They are also both digital TV. And this sort of thing from Bob surprises you because...? What is your definition of digital TV Jeff? It seems that Mark's definition would only allow for the broadcast of the same thing broadcasters are already broadcasting in the exact same way. That is ridiculous. In Japan they are broadcasting the same content but with it directed at cell phones and other mobile devices. As far as I can tell that is the only difference. Why would it not be digital TV. Since cell phones and other mobile devices have small screens they do not need HD bit rates. My definition of OTA broadcast digital TV is broadcasting content that is received by digital receivers over the air. I would love to hear your definition. Digital TV is video content delivered OTA, over cable or satellite. It is just that simple. By that definition of "digital TV", then my current US cell phone is a "digital TV"; it can receive video content, and that content may correspond to something on one of the broadcast TV channels. So your definition of digital TV is that it MUST correspond to current broadcast TV stations and the content they are currently delivering or it is NOT digital TV. Very strange and I think this definition qualifies for the "tortured semantic" answer I expected from Mark. As you say, by Bob's definition, the ability to download TV shows that AOL is offering to users would be "digital TV", and if you happened to download it with a cell phone browser, that would be "digital TV on a cell phone". Could you post the definition you say I have of digital TV that you are talking about? Most content on TV/DTV today is not real time. It is recorded and broadcast whenever. I have never suggested that downloading at the customers request was the same as digital TV. It is not, it's a lot better obviously than what is currently broadcast digital TV. Joining a broadcast or downloading previous content stored on servers is obviously the future of video content. It will not be and is not called digital TV. So torture your semantic BS some more. Love to hear it. Bob Miller |
TV cell phones in Japan
On Wed, 23 Nov 2005, Bob Miller wrote:
What is Mark's definition of digital TV? In order for a mobile device to be considered a television, it must receive and display the same broadcasts received and displayed by a full sized TV set in a living room. Mobile devices with analog receivers satisfy this requirement. There are currently no mobile devices with a digital receiver which satisfies this requirement. In Japan they broadcast an HD version and one for cell phones at the same time. There are, according to the web page, 13 segments of a 6MHz signal in a Japanese digital TV channel. The mobile device only receives one of those segments. The mobile device does not receive any of the other 12 segments. There is nothing that requires that the other 12 segments contain an HDTV signal that precisely duplicates the content on the mobile device segment. There is nothing that requires that there be no other content on the other 12 segments other than an HDTV signal that precisely duplicates the content on the mobile device segment. In fact, the web page makes it clear that the content on the mobile device segment will be different from the other 12 segments. Therefore, this Japanese mobile device is not a digital television any more than a Muzak receiver is an FM radio. This begs the question of why, if COFDM is so great and wonderful, a separate segment is needed for mobile devices. The mobile device should receive and display the same signal used by the big screen TVs. We all know the answer but Psycho Bob isn't willing to admit it. What is your definition of digital TV Jeff? It seems that Mark's definition would only allow for the broadcast of the same thing broadcasters are already broadcasting in the exact same way. That is ridiculous. No Bob; it is you, and your failed company Viacel, that are ridiculous. If you tried to foist your idea of what constitutes a "TV" on a crowd of Thanksgiving weekend Wal-Mart shoppers they would tear you to shreds. My definition of OTA broadcast digital TV is broadcasting content that is received by digital receivers over the air. By that definition my US cell phone is an OTA broadcast digital TV. So your definition of digital TV is that it MUST correspond to current broadcast TV stations and the content they are currently delivering or it is NOT digital TV. Very strange and I think this definition qualifies for the "tortured semantic" answer I expected from Mark. Only a Psycho Bob would claim that something is a "TV" when it does not (can not) receive the same channels as their TV at home. -- Mark -- http://staff.washington.edu/mrc Science does not emerge from voting, party politics, or public debate. Si vis pacem, para bellum. |
TV cell phones in Japan
Mark Crispin wrote:
On Wed, 23 Nov 2005, Bob Miller wrote: What is Mark's definition of digital TV? In order for a mobile device to be considered a television, it must receive and display the same broadcasts received and displayed by a full sized TV set in a living room. Mobile devices with analog receivers satisfy this requirement. There are currently no mobile devices with a digital receiver which satisfies this requirement. There are lots of mobile devices with digital receivers which satisfy this requirement. In fact in Japan they will be receiving the terrestrial HD broadcast in trains and buses. In Germany they are installing digital receivers in cars and it is expected that they will be installed on trains and buses as well. Mobile digital receivers are popping up all over and with DVB-T you can make your laptop a mobile HD receiver no problem. Expect a lot of this in France when they start broadcasting HD. Here are a few items that were posted elsewhere... http://www.globalsources.com/gsol/I/...1001342096.htm http://www.globalsources.com/gsol/I/...1000597536.htm http://www.3wisemonkeys.co.uk/proddet.jsp?id=1146&cat=1 http://www.3wisemonkeys.co.uk/proddet.jsp?id=1144&cat=1 http://www.maplin.co.uk/xmas_huge_sa...iew_TFT_TV.htm http://www.sailgb.com/p/10_inch_12v_tv_unit/ http://www.sailgb.com/p/17inch_black..._freeview_dvd/ http://www.sailgb.com/p/17inch_silve..._freeview_dvd/ http://www.computex.com.tw/computex2...asp?index=8630 http://www.neckermann.de/shop/telestar_digiporty_7.asp http://www.i4u.com/article2231.html http://chelong.en.alibaba.com/produc...igital_TV.html http://www.pocket-lint.co.uk/review.php?reviewId=789 http://www.i4u.com/article2231.html https://www.mycomputerbits.co.uk/aca...___Tuners.html In Japan they broadcast an HD version and one for cell phones at the same time. There are, according to the web page, 13 segments of a 6MHz signal in a Japanese digital TV channel. The mobile device only receives one of those segments. The web page says exactly this taken from the web page. "One Seg" will generally offer the same programs offered for conventional TV receivers through the 12 other segments, allowing viewers to enjoy the popular TV programs they're accustomed to watch at home even when they're out and about. At any time and place, subscribers will have access to important news, weather reports, and disaster information, as well as favorite dramas, variety shows, and sports programming. In addition, interactive services are to be implemented via mobile phone communication features. Though they refer to "One Seg" this does not limit what they broadcast there to one program. Nor does the fact that there are 12 other segments mean that more than one program is being broadcast in those 12 segments. It could be that those 12 segments will be all used for ONE HD program while the "One Seg" will be a lower bitrate copy of the HD program and have other programming as well plus data. The mobile device does not receive any of the other 12 segments. There is nothing that requires that the other 12 segments contain an HDTV signal that precisely duplicates the content on the mobile device segment. There is nothing that requires that there be no other content on the other 12 segments other than an HDTV signal that precisely duplicates the content on the mobile device segment. And what does that have to do with anything. Now there has to be some national law or maybe Mark wants a physical law of nature to make sure that what is broadcast to cell phones is an exact copy of what is broadcast on the other 12 segments or no matter if it is the same or not it cannot be called digital tv. TORTURED to the LIMIT. How far can he go? In fact, the web page makes it clear that the content on the mobile device segment will be different from the other 12 segments. Therefore, this Japanese mobile device is not a digital television any more than a Muzak receiver is an FM radio. A cell phone that receives digital TV whether it is a copy of what is being broadcast on other spectrum or not is still digital TV. It could be new content never broadcast on any other station it is still digital TV. To take Mark's definition of digital TV at face value you could never have any new content on any new or old spectrum which did not copy what was already being broadcast and call it digital TV. Truly bizzaro. This begs the question of why, if COFDM is so great and wonderful, a separate segment is needed for mobile devices. The mobile device should receive and display the same signal used by the big screen TVs. We all know the answer but Psycho Bob isn't willing to admit it. A new segment is not needed for mobile devices. Japan decided that for cell phones which have small antennas they wanted a very robust segment with fewer bits. But the main 12 segment signal can be received mobile, though not as robust on buses and trains or portable TV sets and will be. They could have decided to offer a more robust signal on all the spectrum at an even different rate. In fact COFDM allows numerous rates to be used. At the hearings in DC in 2000 COFDM was used at a 19.76 Mbps rate and was still mobile as the antenna was walked about the hearing room. 8-VSB was not able to match that data rate, being stuck with 19.34 Mbps, and could not even receive at that data rate while mobile. They didn't even want to risk being able to receive 8-VSB at the witness table in a fixed position. What is your definition of digital TV Jeff? It seems that Mark's definition would only allow for the broadcast of the same thing broadcasters are already broadcasting in the exact same way. That is ridiculous. No Bob; it is you, and your failed company Viacel, that are ridiculous. If you tried to foist your idea of what constitutes a "TV" on a crowd of Thanksgiving weekend Wal-Mart shoppers they would tear you to shreds. Wal Mart shoppers would and will go bananas over mobile DTV in coming years as soon as the feeble 8-VSB transition is finally over and the spectrum above channel 51 can be used by new age broadcasters with COFDM. My definition of OTA broadcast digital TV is broadcasting content that is received by digital receivers over the air. By that definition my US cell phone is an OTA broadcast digital TV. I don't know what service you have but if your cell phone can receive digital TV broadcast OTA yes it is OTA digital TV BY DEFINITION. I don't know that this is happening yet but maybe they are doing a special broadcast just for you Mark. If you are getting broadcast digital TV over the cell phone network, not downloaded clips viewed later but real time broadcast video then I would say that is digital TV also. But what we are really talking about here is the use of the OTA broadcast spectrum to broadcast video that can be viewed in the same time as it is being broadcast on any device that is mobile or portable. Any such venture is digital TV no matter what the content, no matter if anyone else is broadcasting it and no matter if that device can or cannot receive other digital TV broadcast that are being aired. So your definition of digital TV is that it MUST correspond to current broadcast TV stations and the content they are currently delivering or it is NOT digital TV. Very strange and I think this definition qualifies for the "tortured semantic" answer I expected from Mark. Only a Psycho Bob would claim that something is a "TV" when it does not (can not) receive the same channels as their TV at home. If you can receive in on your cell phone and you live in the same area then you probably can receive it at home. I don't know of any definition of digital TV that says that a receiver has to be able to receive all stations being broadcast to qualify as a digital TV receiver or that digital TV is only digital TV if the content is duplicated on some other receive device. Insane complicated BS definition and one that fully qualifies as TORTURED!!! Bob Miller -- Mark -- http://staff.washington.edu/mrc Science does not emerge from voting, party politics, or public debate. Si vis pacem, para bellum. |
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