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US 7,688,868 B2Granted
Information transmitting apparatus and method, information receiving apparatus and method, information transmitting and receiving system and method, recording medium and program
AssigneeSony Corporation
InventorHiroshige Okamoto
Life of this patent
Estimating the term…
Abstract
An original blanking period of a video signal is shortened to a set blanking period, and audio data is multiplexed into a resulting superimposing period. Table distinguishing data indicating the length of the superimposing period is inserted into the period as a blanking signal. With this configuration, it is possible to enable transmission and reception of an audio signal in a system capable of transmitting and receiving a video signal.
Claims20
A monitor, comprising:
- an information receiving part, comprising:
- a receiver for receiving a transmitted signal;
- a first unit for capturing a video signal from said received signal;
- a detecting unit for detecting a blanking period of said captured video signal, said blanking period being set to
- a length different from an original period;
- a second unit for capturing information on a multiplexing period of said captured video signal in which a compressed audio signal is multiplexed;
- a third unit for capturing said multiplexed compressed audio signal from said captured video signal on a basis of said captured information on said multiplexing period;
- and
- a correcting unit for correcting said detected blanking period on the basis of said captured information on said multiplexing period;
- data indicative of the duration of the multiplexing period is received during said blanking period of said captured video signal;
- and
- a controller for controlling said information receiving part;
- an RGB amplifier for amplifying video data output from said information receiving part;
- a monitoring device for receiving video data output from said RGB amplifier and for producing moving images according to said video data;
- a H/V sync generating unit for generating a horizontal synchronizing signal and a vertical synchronizing signal on the basis of synchronizing data output from said information receiving part;
- a buffer for buffering audio data received by said information receiving part and converting said audio data into continuous data;
- and
- left-channel and right-channel speakers for producing sound according to said continuous data.
15 more elements
A tuner, comprising:
- a front end for demodulating broadcast data;
- an AV decoder for decoding AV data supplied from said front end;
- an information transmitting part, comprising:
- a first unit for capturing a video signal from an output of said AV decoder;
- a second unit for capturing a compressed audio signal from an output of said AV decoder;
- a setting unit for setting a blanking period of said video signal to a predetermined period of a length different from an original period;
- a multiplexing unit for multiplexing said compressed audio signal into a differential period of said video signal, said differential period corresponding to a difference between said original period and said predetermined period;
- and
- a video signal transmitter for transmitting said video signal having said compressed audio signal multiplexed therein;
- data indicative of the duration of the differential period is transmitted during said blanking period of said video signal having said compressed audio signal multiplexed therein;
- and
- a controller for controlling said information transmitting part.
9 more elements
Dependencies are inferred from the claim text.