US 7,031,599 B2Granted

Recording apparatus and reproducing apparatus

AssigneeSony Corporation

InventorsTetsuo Ogawa, Hiroki Kotani

Life of this patent

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Abstract

It is an object of the present invention to provide a recording apparatus and a reproducing apparatus which change a picture compression rate depending upon a picture quality of a source which a user desires to retain, thereby a tape storage space being secured. A video-data compression rate N used by a 1:N video-data compression encoder 3 and a 1:N video-data compression decoder 6 is changed depending upon a picture quality set by a device 5 for setting a picture quality that a user desires. A tape travel speed of an archive VTR 4 is changed in response to the picture compression rate. Thus, an amount of a tape travel is optionally set depending upon a level of the picture quality. Therefore, it is possible to optionally select a tape storage space in response to the level of the picture quality.

Claims1

Dependent claims

A recording apparatus comprising:

a video-data supply means for supplying a video data;
a compression means for compressing said video data in accordance with MPEG standard;
a setting means for setting a compression rate used in said compression means;
a control means for controlling a travel speed of a recording medium so that said recording medium should be traveled at a speed corresponding to said compression rate set by said setting means;
and
a recording means for recording said video data compressed by said compression means on said recording medium,
wherein said control means controls a speed of said recording medium so that a value of the compression rate set by said setting means and the speed of said recording medium are proportional to each other,
wherein said control means controls the speed of said recording medium so that, when the compression rate set by said setting means is an inverse number of N, where N is an integer greater than 1, the speed of said recording medium is set to a speed multiplied by an inverse number of N.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 11/118,520Filed 29 Apr 2005 · continuation
Priority: JP P6-0111612 Feb 1994
Published: US 2005/0191037 A11 Sep 2005
Granted: 18 Apr 2006
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

H04N 5/9261
By pulse code modulation: involving data reduction
G11B 15/125
Masking of heads; circuits for Selecting or switching of heads between operative and inoperative functions or between different operative…:…
G11B 15/4673
In arrangements for recording or reproducing wherein both record carriers and heads are driven: by controlling the speed of the tape while the…
G11B 15/4675
By controlling the speed of the tape while the head is rotating: with provision for information tracking

Family

PCT/JP95/00136Parent of this continuation · filed 2 Feb 1995
Application09/910,102Parent of this continuation · filed 20 Jul 2001
US 2005/0191037 A1Pre-grant publication · published 1 Sep 2005
Application08/687,360Parent of this continuation
US 2002/0146240 A1Published application
US 7,058,288 B2Related patent
US 7,031,599 B2This patent

From the US filing history. Foreign family members aren’t listed.