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Data playback device and method

A technology of data and data volume, which is applied to the data playback device and the field of data playback, and can solve the problems of inconsistent necessary amount of AV data Pav1, unable to perform smooth playback, etc.

Inactive Publication Date: 2006-04-26
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, in the conventional data playback device 200 whose pre-buffering time is a fixed value of 3 seconds, there is a problem that the necessary amount of AV data Pav1 does not match at the decoding start time, and smooth playback cannot be performed.

Method used

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  • Data playback device and method
  • Data playback device and method
  • Data playback device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] First, an embodiment in which the data reproducing apparatus described in claim 1 of the present invention corresponds to the data reproducing method described in claim 10 will be described with reference to the drawings.

[0044] Fig. 1 is a block diagram showing the configuration and operation of a data reproducing apparatus according to Embodiment 1 of the present invention.

[0045] The data playback device 100a of this embodiment 1 is a data playback device that plays back the file while receiving the beginning of the file. The file includes: file header information; audio and video (hereinafter referred to as AV) configured after the file header information; )data.

[0046] That is, the data playback device 100a includes: a data request device 101 that requests a file from a server; and a reception buffer 102 that stores and pre-buffers data received in response to the request. And the data reproducing apparatus 100a has: the control means 103a, according to the ...

Embodiment 2

[0072] Embodiments corresponding to the data reproducing apparatus described in claims 2 to 8 and the data reproducing method described in claim 11 of the present invention will be described below as a second embodiment with reference to the drawings.

[0073] Fig. 6 is a block diagram showing the configuration and operation of a data reproducing apparatus according to Embodiment 2 of the present invention.

[0074] In FIG. 6 , the same reference numerals as those in FIG. 1 denote the same or corresponding structures. The data playback device 100b of the second embodiment includes: a data request device 101 for requesting a file from a server; and a reception buffer 102 for pre-buffering data received in response to the request. Moreover, the data reproducing apparatus 100b has: the control means 103b, after a predetermined time has elapsed after the head position of the AV data is detected, outputs a decoding start instruction signal; The AV data pre-buffered in the receivin...

Embodiment 3

[0118] The configuration and operation corresponding to the data reproducing device described in claim 9 of the present invention will be described below as a third embodiment with reference to the drawings.

[0119] Fig. 12 is a block diagram showing the configuration and operation of a data reproducing apparatus according to Embodiment 3 of the present invention.

[0120] In FIG. 12, the same reference numerals as those in FIG. 1 denote the same or corresponding structures. The data playback device 100c of the third embodiment includes: a data request device 101 for requesting a file from a server; and a reception buffer 102 for pre-buffering data received in response to the request. Moreover, the data reproducing apparatus 100c has: the control means 103c, which calculates the amount of data required for displaying for a certain period of time based on the data stored in the receiving buffer 102, and detects the head position of the AV data. When this amount of data, outpu...

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Abstract

The present invention provides a data reproducing device and a data reproducing method which securely pre-buffer audio and video data of a size required for data reproducing at the time of data reception, thereby enabling stable data reproducing. Data playback device (100a) comprises: data requesting device (101), requests the transmission of data to server; Receive buffer (102), stores and receives data; Control device (103a), detects the head position of audio-video data, After this head position detects, when the amount of data stored in the receiving buffer (102) becomes a certain set value, the decoding of the audio-video data is indicated to start; the decoding device (104) is stored in the receiving buffer ( The audio and video data in 102) is decoded; the clock circuit (105) outputs a clock signal; the display device (106) displays the decoded data.

Description

technical field [0001] The present invention relates to a data reproducing device and a data reproducing method, in particular to a data reproducing device and a data reproducing method for reproducing while downloading a file of reproducing data multiplexed with various attributes from a data server. Background technique [0002] In recent years. A PC (personal computer) and a mobile terminal can realize the function of reproducing while downloading a file of reproducing data multiplexed with various attributes from a data server. As a file format used for such purposes, there is, for example, program stream (hereinafter referred to as PS) standardized by the International Standardization Organization Moving Picture Experts Group (hereinafter referred to as MPEG). [0003] Next, the structure and operation of a conventional data reproducing apparatus that receives a PS file that multiplexes audio data and video data will be described with reference to the drawings. [000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/00G06F12/00H04N5/76G11B20/10H04N5/00H04N7/24
CPCG11B20/10527G11B2020/10537G11B2020/1062H04N21/23406H04N21/44004H04N21/4424H04N21/6587H04N21/85406H04N5/76
Inventor 松井义德井村康治大岳直人
Owner PANASONIC CORP