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Receiver and decoding method of broadcast receiver

A technology of a broadcast receiver and a decoding method, which is applied in the field of decoding of receivers and broadcast receivers, and can solve problems such as long waiting time for switching

Inactive Publication Date: 2008-04-02
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the conventional technique of Patent Document 1, when before stopping / starting decoding and after switching, in order to prevent useless images from being displayed at the time of channel switching, the switching waiting time becomes long

Method used

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  • Receiver and decoding method of broadcast receiver
  • Receiver and decoding method of broadcast receiver
  • Receiver and decoding method of broadcast receiver

Examples

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Comparison scheme
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Embodiment Construction

[0016] One embodiment of the present invention provides a broadcasting receiver and a decoding method of the broadcasting receiver for shortening an invalid display time at the time of channel switching of digital broadcasting.

[0017] An embodiment for achieving the above object is a broadcast receiver comprising the following aspects: an operation part (18), used to output an operation signal of a channel; a tuner part (11), used to receive a digital broadcast signal of a designated channel And output video / audio signal; switch (20), is used to receive video / audio signal from tuner section and output signal to the following stage according to order signal; Decoder section (15), is used for video / audio signal from switch The audio signal is decoded and reproduced; and the controller (19), at the first timing (t 1 ) cut off the switch (S21), change the channel of the tuner section to the second channel (S22), and at the first timing (t 1 ) the second timing (t 2 ) to turn o...

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Abstract

According to one embodiment, a broadcast receiver includes an operating section which outputs an operation signal of a channel, a tuner section which receives a digital broadcast signal of a specified channel and outputs a video / audio signal, a switch which receives the video / audio signal from the tuner section and outputs the signal to a later tier according to a command signal, a decoder section which decodes and reproduces the video / audio signal from the switch, and a controller which, when an operation signal for switching a first channel to a second channel is given from the operating section, turns off the switch at a first timing of the channel switching, changes the channel of the tuner section into the second channel, and turns on the switch at a second timing elapsed by a predetermined time from the first timing.

Description

Background technique [0001] One embodiment of the present invention relates to a broadcast receiver of a digital broadcast signal and a decoding method of the broadcast receiver. [0002] Currently, digital broadcasting is widely used, and many digital broadcasting receivers are being developed and used. In such digital broadcasting receivers, since channel switching at the time of receiving digital broadcasting requires demultiplexer / I-picture latency / VBV-delay time caused by the structure of MPEG (Moving Picture Experts Group), digital Channel switching in broadcasts takes longer than in analog broadcasts. [0003] Patent Document 1 (Japanese Patent Application KOKAI Publication No. 2005-184457) discloses that when programs are switched, the time at which the I-picture of the next program may appear is predicted, and the currently displayed program is displayed until the predicted time passes The time obtained by subtracting the tuner setting time is used to minimize the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/44H04N5/50H04B1/18H04B1/16H04N7/173
CPCH04N5/50H04N21/44H04N21/4384H04N5/4401H04N21/426
Inventor 冈田兴志福岛道弘
Owner KK TOSHIBA