| Presentation | 1999/7/23 Subjective assessments of hierarchical transmission services in ISDB-S system Jun MATSUMOTO, Tomohiro SAITO, Yasushi MIZUKI, Fumiaki MINEMATSU, Tetsuya YAMADA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | For the 12GHz band satellite broadcasting system, service interruption caused by a heavy rainfall is a severe problem. In ISDB-S system, the interruption duration can be reduced by using a hierarchical transmission. This paper describes results of subjective assessments of the hierarchical transmission employing a new low layer scheme with a low definition picture on a screen. We evaluate the hierarchical transmission by "channel holding rate" which is the ratio of an average audience rating of low layer service to that of high layer service. Since the low layer service got more than 90% of channel holding rate on each program provided in the assessments, it was confirmed that this low layer scheme could be effective for the hierarchical transmission. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | ISDB-S / hierarchical transmission / subjective assessment / MPEG-2MP@LL / audience rating |
| Paper # | CQ99-11 |
| Date of Issue |
| Conference Information | |
| Committee | CQ |
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| Conference Date | 1999/7/23(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Communication Quality (CQ) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Subjective assessments of hierarchical transmission services in ISDB-S system |
| Sub Title (in English) | |
| Keyword(1) | ISDB-S |
| Keyword(2) | hierarchical transmission |
| Keyword(3) | subjective assessment |
| Keyword(4) | MPEG-2MP@LL |
| Keyword(5) | audience rating |
| 1st Author's Name | Jun MATSUMOTO |
| 1st Author's Affiliation | Japan Broadcasting Corporation (NHK) Science & Technical Research Laboratories() |
| 2nd Author's Name | Tomohiro SAITO |
| 2nd Author's Affiliation | Japan Broadcasting Corporation (NHK) Science & Technical Research Laboratories |
| 3rd Author's Name | Yasushi MIZUKI |
| 3rd Author's Affiliation | Japan Broadcasting Corporation (NHK) Science & Technical Research Laboratories |
| 4th Author's Name | Fumiaki MINEMATSU |
| 4th Author's Affiliation | Japan Broadcasting Corporation (NHK) Science & Technical Research Laboratories |
| 5th Author's Name | Tetsuya YAMADA |
| 5th Author's Affiliation | Japan Broadcasting Corporation (NHK) Science & Technical Research Laboratories |
| Date | 1999/7/23 |
| Paper # | CQ99-11 |
| Volume (vol) | vol.99 |
| Number (no) | 215 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |