Title:
【発明の名称】VCRのヘッドスイッチング信号発生方法及びその装置
Document Type and Number:
Japanese Patent JP3017090
Kind Code:
B2
Abstract:
A head switching signal generation apparatus for a VCR includes a pulse signal generator for generating a first pulse signal having the same phase and period of time as a head drum pulse signal in response to the head drum pulse signal, an envelope detector for detecting an envelope signal from a signal read out from a video tape and generating a second pulse signal having the same phase and period of time as the detected envelope signal, and a controller for generating a head switching signal whose pulse level is altered at an actual head switching point of time, based on the received first and second pulse signals. An accurate head switching signal can be generated even when a vertical sync signal is not detected from a video tape having a recording format for recording a vertical sync signal, as well as a recording format by which a vertical sync signal is not recorded on a video tape.
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Inventors:
Hiroshi Naru
Application Number:
JP17508796A
Publication Date:
March 06, 2000
Filing Date:
July 04, 1996
Export Citation:
Assignee:
Samsung Electronics Co.,Ltd.
International Classes:
G11B20/10; G11B15/12; G11B15/14; (IPC1-7): G11B15/14; H04N5/93
Attorney, Agent or Firm:
Tadahiko Ito (1 outside)