Title:
FRAME PHOTOGRAPHING RECORDER FOR COMPOSITE VIDEO SIGNAL
Document Type and Number:
Japanese Patent JPS62227282
Kind Code:
A
Abstract:
PURPOSE:To excellently record a signal of two field periods as the signal of one frame period at adjacent two record marks on a rotary recording medium, by controlling a recording position by using a crosstalk quantity in an information signal from an adjacent recording mark as a bit of distance information from the adjacent recording mark. CONSTITUTION:In a case that a pilot signal Pp recorded at every three horizontal scanning periods in each recording mark being recorded in parallel in order with a prescribed interval on a rotary magnetic recording medium, is, for example, a low frequency of about 500kHz, the crosstalk of the pilot signal Pp recorded at the adjacent recording mark is reproduced by a magnetic head H. At an AND circuit 77 in a field identification signal generation circuit, a pulse Pfdt is generated at the rising time of a field discrimination signal Pfd, and a monstable multivibrator MONO1 is triggered, and an output pulse having a pulse width of T1, and a MONO2 is generated at the falling time of the pulse, and an output pulse Pt having a pulse width of T2 is suppied from the MONO1 to an AND circuit 78 as a gate pulse. A field identification signal generated by sampling the oscillation wave of an oscillator OSC by the pulse width of the pulse Pt, is sent out to an output terminal 9.
Inventors:
KAWASE SHIGERU
KANESHIRO TOSHIO
MIZUNO YOSHIO
SHIYUDO KATSUYUKI
KANESHIRO TOSHIO
MIZUNO YOSHIO
SHIYUDO KATSUYUKI
Application Number:
JP7156086A
Publication Date:
October 06, 1987
Filing Date:
March 28, 1986
Export Citation:
Assignee:
VICTOR COMPANY OF JAPAN
International Classes:
G11B20/02; G11B5/027; G11B19/02; G11B19/20; G11B21/10; H04N5/765; H04N5/781; H04N5/91; H04N9/83; (IPC1-7): G11B20/02; H04N5/781; H04N5/91
Domestic Patent References:
| JPS58173984A | 1983-10-12 | |||
| JPS60185476A | 1985-09-20 | |||
| JP60082881B |
Attorney, Agent or Firm:
Takama Imama