Apparatus and method of high vision signal recording using expansion techniques and digital drop-out compensation

• US 5,283,659 A
• Filed: 04/17/1991
• Issued: 02/01/1994
• Est. Priority Date: 06/01/1990
• Status: Expired due to Fees

• Current Assignee: Pioneer Electronics (USA) Incorporated (Pioneer Corporation)
• Original Assignee: Pioneer Electronics (USA) Incorporated (Pioneer Corporation)
• Inventors: Okuda, Yoshiyuki, Tozaki, Akihiro, Sugihara, Motooki, Akiyama, Toru
• Primary Examiner(s): Chin, Tommy P.
• Assistant Examiner(s): TRAN, THAI Q
• Application Number:
  US07/686,530
• Time in Patent Office: 1,021 Days
• Field of Search: 358/310, 358/330, 358/322, 358/11, 358/12, 358/13, 358/334, 358/14
• US Class Current: 386/307
• CPC Class Codes: G11B 19/12 by sensing distinguishing features of or on records, e.g. diameter end mark
• CPC Class Codes: G11B 2220/20 Disc-shaped record carriers
• CPC Class Codes: G11B 2220/2587 Laser Discs; Optical disc using analog recording
• CPC Class Codes: G11B 27/002 Programmed access in sequence to a plurality of record carriers or indexed parts, e.g. tracks, thereof, e.g. for editing; transfer of record carriers from magazine G11B15/68, G11B17/10; G11B17/22
• CPC Class Codes: G11B 27/024 on tapes G11B27/028, G11B27/029 take precedence
• CPC Class Codes: G11B 27/028 with computer assistance
• CPC Class Codes: G11B 27/105 of operating discs
• CPC Class Codes: G11B 27/28 by using information signals recorded by the same method as the main recording G11B27/22 takes precedence
• CPC Class Codes: G11B 27/329 on a disc [VTOC]
• CPC Class Codes: G11B 27/36 Monitoring, i.e. supervising the progress of recording or reproducing for digital recording G11B20/00 and s.gr.; for monitoring, testing or measuring of TV recorders of the type covered by H04N5/76 and subgroups, see H04N17/06
• CPC Class Codes: H04N 9/793 for controlling the level of the chrominance signal, e.g. by means of automatic chroma control circuits
• 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 9/81 the individual colour picture signal components being recorded sequentially only
• CPC Class Codes: H04N 9/8222 using frequency division multiplex
• CPC Class Codes: H04N 9/877 by assembling picture element blocks in an intermediate memory

Abstract

An apparatus in which a high vision signal having 1125 horizontal lines per frame is divided into three signals and three channel signals each having 375 horizontal lines per frame are obtained wherein the resultant three channel signals are time base expanded, three channel signals in a base band of 10 MHz are obtained, and the three channel signals are independently recorded onto a medium. A recording medium on which signals is recorded and processed by the above apparatus is provided.

Claims

1. An apparatus for recording a high vision signal which is constructed of a multitude of horizontal scanning lines per frame, comprising:

means for line sequentially processing two kinds of color difference signals in said high vision signal on an H[-] line unit basis and forming two groups of line sequential color difference signals each of which is constructed by one of said two kinds of color difference signals;

time base expanding means for time base expanding a luminance signal in said high vision signal and said two groups of line sequential color difference signals and for obtaining an expanded luminance signal and two groups of line sequential expanded color difference signals;

means for combining three H lines of one of said two groups of line sequential expanded color difference signals consisting of six H lines corresponding to a group of expanded luminance signals consisting of six continuous H lines of the expanded luminance signal with the former half three H lines of the group of expanded luminance signals every line, forming the former half three expanded H lines, and for combining three H lines of the other one of the two groups of line sequential expanded color difference signals with the latter half three H lines of the group of expanded luminance signals every line, forming the latter half three expanded H lines;

means for setting resultant three pairs of former half and latter half expanded H lines into three channel signals; and

means for independently recording said three channel signals to spatially different positions on a recording medium.

3. The apparatus as recited in claim 1, wherein said multitude of horizontal scanning lines consists of 1125 lines.

4. The apparatus as recited in claim 1, wherein a base band of said three channel signals is 10 MHz.

2. A method of recording a high vision signal on a medium comprising the steps of:

generating two kinds of color difference signals in said high vision signal having a plurality of H lies per frame;

line sequentially processing said color difference signals, forming on an H[-] line unit basis two groups of lien sequential color difference signals each of which is constructed by one of said two kinds of color difference signals;

obtaining a luminance signal from said high vision signal;

time base expanding said luminance signal and line sequential color difference signals;

combining three H lines of one of said two groups of line sequential expanded color difference signals consisting of six H lines corresponding to a group of expanded luminance signals consisting of six continuous H lines of the expanded luminance signals with the former half three H lines of the group of expanded luminance signals every line, forming the former half three expanded H lines;

combining three H lines of the other one of said tow groups of line sequential expanded color difference signals with the latter half three H lines of the group of expanded luminance signals every line, forming the latter half three expanded H lines, and

recording the resultant three pairs of former half and latter half expanded H lines as three channel signals to spatially different positions.