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Digital broadcast reproduction device and digital broadcast reproduction method

A technology of digital broadcasting and reproducing devices, applied in two-way working systems, electrical components, pulse-modulated TV signal transmission, etc.

Inactive Publication Date: 2011-06-29
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in such delay control, in order not to miss some broadcasting stations, it is necessary to delay until the AV output of all broadcasting stations

Method used

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  • Digital broadcast reproduction device and digital broadcast reproduction method
  • Digital broadcast reproduction device and digital broadcast reproduction method
  • Digital broadcast reproduction device and digital broadcast reproduction method

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no. 1 Embodiment approach

[0048] A digital broadcast playback device according to a first embodiment of the present invention will be described with reference to the drawings. Here, first, the configuration of the digital broadcast playback device according to this embodiment will be described. figure 1 is a block diagram showing the configuration of the digital broadcast playback device according to this embodiment. Such as figure 1 As shown, the digital broadcast playback device 1 includes an STC counter 2 which is a counter (counter) of a reference time (STC) used to reproduce content at a timing intended by the broadcast station side.

[0049] The STC is set in the STC counter 2 by the digital broadcast playback device 1 on the receiving side to be counted based on a value inserted by a broadcasting station as a PCR (Program Clock Reference; Program Reference Clock) at regular intervals in the transport stream (TS). That is, the STC counter 2 is a counter for the reference time for generating the...

no. 2 Embodiment approach

[0102] Next, a digital broadcast playback device according to a second embodiment of the present invention will be described with reference to the drawings. Here, the configuration of the digital broadcast playback device according to this embodiment will be described focusing on points different from those of the first embodiment. That is, unless otherwise mentioned here, the configuration of the digital broadcast playback device of this embodiment is the same as that of the first embodiment.

[0103] Figure 7 is a block diagram showing the configuration of the digital broadcast playback device according to this embodiment. Such as Figure 7 As shown, the digital broadcast reproducing apparatus 1 includes a video post-processing unit 14 and an audio post-processing unit 15 as a structure for performing prescribed post-processing after output timing control. Furthermore, this digital broadcast reproducing apparatus 1 includes a video post-processing time holding unit 16 an...

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PUM

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Abstract

A digital broadcast reproduction device (1) includes: decode units (3, 10) which decode received digital broadcast stream data to generate digital broadcast frame data and output specification time data; delay time calculation units (6, 13) which calculate a delay time from the output specification time of the output-enabled time of the digital broadcast frame; a maximum delay time holding unit (8) which holds the delay time and the maximum value in the delay times calculated in the past as a maximum delay time; and output timing control units (4, 11) which control the output timing of the digital broadcast. The output timing control units (4, 11) control the output timing so that the digital broadcast frame is outputted with a maximum delay time from the output specification time. This provides a digital broadcast reproduction device which can perform control to appropriately delay the output timing of the digital broadcast.

Description

technical field [0001] The present invention relates to a digital broadcast reproduction device (digital broadcast reproduction device) having a function of decoding and outputting stream data of digital broadcasting. Background technique [0002] In recent years, digital broadcasting has started, and each broadcasting station converts a coded video stream or audio stream into a TS (Transport Stream; transport stream) format and broadcasts it. A digital broadcast playback device separates a received TS format stream into a video stream or an audio stream, performs decoding processing on each to generate a video frame or an audio frame, and outputs video or audio from a screen or a speaker. [0003] In this digital broadcast, in order to control the timing (timing) of AV output in the digital broadcast playback device, an STC (System Time Clock; system clock) indicating a system reference time is distributed, and a PTS ( The Presentation time Stamp (presentation time stamp) ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/8547H04N7/52H04N7/173H04N21/438H04N21/4385H04N21/44
CPCH04N21/4307H04N21/4341H04N21/2368H04N21/43072
Inventor 田中义照
Owner PANASONIC CORP