Video signal recording apparatus which receives a digital progressive scan TV signal and switches the progressive signal frame by frame alternately

• US 5,677,981 A
• Filed: 06/14/1995
• Issued: 10/14/1997
• Est. Priority Date: 06/14/1994
• Status: Expired due to Fees

• Current Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Juri, Tatsuro, Fujiwara, Yuji, Nishino, Masakazu, Kato, Shiro, Takeuchi, Seiichi
• Primary Examiner(s): Chin, Tommy P.
• Assistant Examiner(s): VINCENT, DAVID ROBERT
• Application Number:
  US08/490,326
• Time in Patent Office: 853 Days
• Field of Search: 358/335, 360/33.1, 348/441, 348/446, 348/448, 348/449, 348/450, 348/452, 348/453, 348/439, 348/427, 348/388, 348/389
• US Class Current: 386/329
• CPC Class Codes: H04N 5/782 on tape
• CPC Class Codes: H04N 5/78266 using more than one track for the recording of one television field or frame, i.e. segmented recording
• CPC Class Codes: H04N 5/91 Television signal processing therefor
• CPC Class Codes: H04N 9/7921 for more than one processing mode
• CPC Class Codes: H04N 9/7925 for more than one standard
• CPC Class Codes: H04N 9/797 for recording the signal in a plurality of channels, the bandwidth of each channel being less than the bandwidth of the signal H04N9/804, H04N9/81, H04N9/82 take precedence
• CPC Class Codes: H04N 9/7973 by dividing the luminance or colour component signal samples or frequency bands among a plurality of recording channels H04N9/804, H04N9/825 take precedence
• CPC Class Codes: H04N 9/8042 involving data reduction
• CPC Class Codes: H04N 9/877 by assembling picture element blocks in an intermediate memory

Abstract

A video signal recording apparatus including a switching device for receiving a digital progressive scan TV signal having a frame cycle which is 1/2 of the frame cycle of an interlaced scan TV signal and switching the progressive scan TV signal frame by frame alternately; a coding device for performing high-rate coding of data corresponding to one frame of the progressive scan TV signal to the same code amount as obtained by high-rate coding of data corresponding to one frame including two successive fields of an interlaced scan standard-definition TV signal; and a recording device for recording the data processed with the high-rate coding in the same number of tracks as the data corresponding to one frame of the interlaced scan standard-definition TV signal.

Claims

1. A video signal recording apparatus, comprising:

switching means for receiving a digital progressive scan TV signal (having a frame cycle which is 1/2 of the frame cycle of an interlaced scan TV signal) and switching the progressive scan TV signal frame by frame alternately;

coding means for performing high-rate coding of data corresponding to one frame of the progressive scan TV signal to the same code amount as obtained by high-rate coding of data corresponding to one frame including two successive fields of an interlaced scan standard-definition TV signal; and

recording means for recording the data processed with the high-rate coding in the same number of tracks as the data corresponding to one frame of the interlaced scan standard-definition TV signal.

2. A video signal recording apparatus according to claim 1, wherein the recording means include two interlaced scan TV signal recording devices.

3. A video signal recording apparatus according to claim 2, wherein the switching means alternately transmits frames of the progressive scan TV signal to each one of the two interlaced scan TV signal recording devices.

4. A video signal recording apparatus according to claim 3, wherein:

each interlaced scan television signal recording device includes dividing means for dividing the data corresponding to one frame of the progressive scan TV signal into a plurality of coding units, and the coding means performs a high-rate coding of each of the plurality of coding units.

5. A video signal recording apparatus according to claim 4, wherein the coding means are included in each of the two interlaced scan TV signal recording devices, and the coding means uses intra-frame coding to perform the high-rate coding.