Title:
RECEIVER
Document Type and Number:
Japanese Patent JP3033703
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To enhance the carrying performance and the convenience of the transmitter by providing a PSK demodulator, a Viterbi decoder, a demultiplexer and a high efficiency decoder decoding a video signal from demultiplexed video data.
SOLUTION: At a receiver side, a PSK demodulator 24 applies PSK demodulation to a received signal, a Viterbi decoder 25 applies error correction by Viterbi decoding to the signal, that is, maximum likelihood decoding of convolution coding is conducted by the Viterbi algorithm, the data are high- efficiency-decoded at an image high efficiency decoder 27, that is, original data are obtained from data whose information amount is reduced and the original digitized video signal is decoded. In this case, the decoded data are fed to a demultiplexer 26, by which the data are demultiplexed into a video signal and an audio signal and also a telephone voice signal, when included. The demtultiplexed video signal is subject to high efficiency decoding and converted into a digital signal, converted into an analog signal by a D/A converter 28 and the original video signal is obtained at an output terminal 29.
Inventors:
Yasuhiro Hideshima
Masakatsu Toyoshima
Kitasato Naohisa
Yuichi Kojima
Masakatsu Toyoshima
Kitasato Naohisa
Yuichi Kojima
Application Number:
JP2708997A
Publication Date:
April 17, 2000
Filing Date:
February 10, 1997
Export Citation:
Assignee:
ソニー株式会社
International Classes:
H04B7/15; H04B7/155; H04N7/20; H04N7/24; H04N19/00; H04N21/647; (IPC1-7): H04N7/20; H04B7/15
Domestic Patent References:
| JP6079887A | ||||
| JP5617534A | ||||
| JP623583A | ||||
| JP60167533A |
Other References:
【文献】「改訂 衛星通信技術」、宮 憲一監修、昭和60年2月15日、社団法人電子通信学会発行
Attorney, Agent or Firm:
Hidemori Matsukuma