Title:
BROADCAST RECEPTION DEVICE, TRANSMISSION WAVE PROCESSING METHOD, TRANSMISSION WAVE GENERATING METHOD, AND DIGITAL BROADCAST RECEPTION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/100667
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a sophisticated digital broadcast service in a more preferable manner. Broadcast waves include an identification bit indicating the modulation scheme of a signal transmitted in a first layer, and an identification bit indicating the modulation scheme of a signal transmitted in a second layer. This broadcast reception device is provided with a first receiving/demodulating unit for receiving the broadcast waves and demodulating a 2K broadcast service, and a second receiving/demodulating unit for receiving the broadcast waves and demodulating a 4K broadcast service. The broadcast reception device is configured such that the modulation scheme identifying process in the first receiving/demodulating unit and the modulation scheme identifying process in the second receiving/demodulating unit have a state such that, even when the identification bit indicating the modulation scheme of the signal transmitted in the first layer of the broadcast waves and the identification bit indicating the modulation scheme of the signal transmitted in the second layer thereof indicate the same value, the modulation scheme of the signal transmitted in the first layer is identified in the first receiving/demodulating unit as being synchronous modulation, and the modulation scheme of the signal transmitted in the first layer is identified in the second receiving/demodulating unit as being differential modulation.
Inventors:
AKIYAMA HITOSHI (JP)
YOSHIZAWA KAZUHIKO (JP)
SHIMIZU TAKUYA (JP)
HASHIMOTO YASUNOBU (JP)
YOSHIZAWA KAZUHIKO (JP)
SHIMIZU TAKUYA (JP)
HASHIMOTO YASUNOBU (JP)
Application Number:
PCT/JP2020/042665
Publication Date:
May 27, 2021
Filing Date:
November 16, 2020
Export Citation:
Assignee:
MAXELL LTD (JP)
International Classes:
H04H20/28; H04B1/16; H04H20/95; H04H40/18; H04H60/13; H04H60/38; H04H60/65; H04N21/2362; H04N21/2385; H04N21/426; H04N21/438
Foreign References:
| JP2017143445A | 2017-08-17 | |||
| JP2012100179A | 2012-05-24 | |||
| JP2019201336A | 2019-11-21 |
Attorney, Agent or Firm:
TSUTSUI & ASSOCIATES (JP)
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