Data reproduction method and data reproduction apparatus

Details Data reproduction method and data reproduction apparatus Data reproduction method and data reproduction apparatus

2004-03-26

2008-01-29

Chevalier, Robert (Department: 2621)

Motion video signal processing for recording or reproducing

Local trick play processing

With randomly accessible medium

C386S349000

Reexamination Certificate

active

07324739

ABSTRACT:
In a data reproduction method and a data reproduction apparatus in the present invention, video data having a frame frequency of 23.97 Hz is recorded on a tape, and in correspondence with this video data, audio data having a sampling frequency of 48 kHz is also recorded on the tape. In a normal reproduction, video data having a frame frequency of 23.97 Hz is reproduced from the tape. In this case, the rate converter outputs audio data of each field without making any conversion. Contrarily, in a compatibility reproduction, video data having a frame frequency of 25 Hz is reproduced from the tape. In this case, the rate converter outputs the audio data of each field after converting the number of items of sampled data into the number corresponding to the reproduction frame frequency.

REFERENCES:
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patent: 63-131375 (1988-06-01), None
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patent: WO-97/047132 (1997-11-01), None
Japanese Office Action; Application No. 2003-101304; Dated Mar. 20, 2007.

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