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Data playback device and method

A playback device, data location technology, applied in data recording, data buffer arrangement, electrical digital data processing, etc., can solve problems such as inability to perform smooth playback, inconsistency in the necessary amount of AV data Pav1, etc.

Inactive Publication Date: 2003-02-05
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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] First, an aspect corresponding to the data reproducing apparatus described in claim 1 of the present invention and the data reproducing method described in claim 10 will be described as Embodiment 1, with reference to the accompanying 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 reproducing apparatus 100a of the first embodiment is a data reproducing apparatus for reproducing the file while receiving the beginning of the file, and the file includes: file header information; audio / video (hereinafter referred to as AV) arranged 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 the server; and a reception buffer 102 that stores and pre-buffers the data received in response to the request. Furthermore, the data playback device 100a in...

Embodiment 2

[0072] Hereinafter, as a second embodiment, the data reproducing apparatus described in claim 2 to claim 8 of the present invention and the data reproducing method described in claim 11 of the present invention will be described with reference to the accompanying 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 are the same or equivalent structures. The data playback device 100b of the second embodiment includes a data requesting device 101 that requests a file from the server, and a reception buffer 102 that pre-buffers the data received in response to the request. Further, the data reproducing device 100b includes a control device 103b for outputting a decoding start instruction signal when a predetermined time has elapsed after the head position of the AV data is detected, and a decoding de...

Embodiment 3

[0118] Hereinafter, the configuration and operation of the data reproducing apparatus according to the ninth aspect of the present invention will be described with reference to the drawings as the third embodiment.

[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 are the same or equivalent structures. The data reproducing apparatus 100c according to the third embodiment includes a data requesting apparatus 101 that requests a file from the server, and a reception buffer 102 that pre-buffers the data received in response to the request. Further, the data playback device 100c includes a control device 103c that calculates the amount of data necessary for displaying for a certain period of time based on the data stored in the above-mentioned reception buffer 102, When this amount of data is present, a d...

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Abstract

The present invention provides a data reproduction apparatus and a data reproduction method by which stable data reproduction can be performed by reliably, pre-buffering audio video data of a size required for data reproduction when data is received. The data reproduction apparatus (100a) comprises: a data request unit (101) for requesting a server to transmit data; a reception buffer (102) for holding received data; a control unit (103a) for detecting the beginning position of AV data and instructing, start decoding of the AV data when the amount of data accumulated in the reception buffer (102) has reached a set value after detection of the beginning position, the decoding unit (104) for decoding the AV data stored in the reception buffer (102); a clock circuit (105) for outputting a clock signal; and a display unit (106) for displaying the decoded data.

Description

technical field [0001] The present invention relates to a data reproducing apparatus and data reproducing method, and more particularly, to a data reproducing apparatus and a data reproducing method for reproducing a file in which replay data multiplexed with multiple attributes is downloaded from a data server. Background technique [0002] In recent years, a PC (personal computer) and a mobile terminal have realized a function of downloading and playing back a file in which playback data of multiple attributes is multiplexed from a data server. As a file format for such use, there is a program stream (hereinafter referred to as PS) standardized by the Moving Picture Experts Group (hereinafter referred to as MPEG), an international organization for standardization, for example. [0003] The configuration and operation of a conventional data reproducing apparatus that receives a PS file in which audio data and video data are multiplexed will be described below with reference...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/76G11B20/10H04N5/00H04N7/24
CPCH04N21/6587G11B20/10527H04N21/23406H04N21/44004G11B2020/1062G11B2020/10537H04N21/4424H04N21/85406H04N5/76
Inventor 松井义德井村康治大岳直人
Owner PANASONIC CORP