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EP0112534A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Apparatus for recording a video signal

Assignee: Sony Corp
•
Filing: 1983-12-12
•
Granted: —
•
Expires: 2003-12-12
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Abstract

Abstract Video signal recording apparatus, wherein a magnetic tape is helically wrapped on a guide drum and comprising a single rotary head for scanning the magnetic tape. One field of the video signal is divided into N segments. Each segment is time-compressed to ensure a time corresponding to an interval where the single rotary head cannot scan the magnetic tape. The segments are sequentially recorded on respective N recording tracks. A synchronizing signal interval of the video signal may also be time-compressed. Seperate memories (15, 16, 19) to be alternatively switched may be used to temporarily store said video signal interval and said time-compressed synchronizing signal interval respectively. Horizontal and vertical synchronizing signal intervals and/or even and odd field intervals may be stored in seperate memories (16A, 168; 16, 19). Only one clock signal generator (14) is sufficient for writing and reading.

Inventors

  • 👤 Tadaaki Yoshinaka
  • 👤 Toshiaki Noguchi

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-09 20:20
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/008; G11B5/00813; G11B5/00847; G11B5/0086; G11B20/00; G11B20/00007; H; H04; H04N; H04N5/00; H04N5/76; H04N5/78; H04N5/782; H04N5/7824; H04N5/7826; H04N5/78263; H04N5/78266; H04N5/91; H04N5/92

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 95 words
An apparatus for recording a video signal on magnetic tape (2) which is helicallv wrapped on a guide drum (1) having single rotary head (H) for scanning said magnetic tape (2), comprising; means for dividing one field of video signal into N segments (N: integer) and time-compressing each of said N segments to ensure a time corresponding to an interval where said single rotary head (H) cannot scan said magnetic tape (2), and means for recording said N segments thereof on the respective N recording tracks sequentially by means of said single rotary head (H).
Claim 2
Independent Claim 95 words
An apparatus for recording a video signal on magnetic tape (2) which is helicallv wrapped on a guide drum (1) having single rotary head (H) for scanning said magnetic tape (2), comprising; means for dividing one field of video signal into N segments (N: integer) and time-compressing each of said N segments to ensure a time corresponding to an interval where said single rotary head (H) cannot scan said magnetic tape (2), and means for recording said N segments thereof on the respective N recording tracks sequentially by means of said single rotary head (H).
Claim 3
Dependent Claim 24 words
An apparatus according to claim 1, in which said time-compressing means includes control means for time-compressing a synchronizing signal interval of said video signal.
Claim 4
Dependent Claim 78 words
An apparatus according to claim 2, in which said control means comprises first memory (15) for writing only a video signal interval of said video signal therein and reading said video signal interval therefrom, second memory (16, 19) in which the time-compressed synchronizing signal interval to be read out is stored and switch means (17) for alternatively reading said video signal interval from said first memory (15) and said synchronizing signal interval from said second memory (16, 19).
Claim 5
Dependent Claim 37 words
An apparatus according to claim 3, in which said second memory (16) comprises first read only memory (16A) storing a horizontal synchronizing signal interval and sesond read only memory (16 B) storing a vertical synchronizing signal interval.
Claim 6
Dependent Claim 41 words
An apparatus according to claim 3, or 4, further comprising a clock signal generator (14) connected with said first memory (15) for generating a clock signal (CK) which is used in common for writing and reading of said first memory (15).
Claim 7
Independent Claim 73 words
An apparatus according to one of claims 3 to 5, in which said second memory (16, 19) comprises a first memory means (16) storing an even field and a second memory means (19) storing an odd field of said time-compressed synchronizing signal interval and in which said switching means (17) further alternatively reads said synchronizing singal interval from said first or second memory means (16 or 19) of said second memory (16, 19).

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