JPS60186767U - Video playback circuit - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案の映像再生回図の１実施例のブロク図、
第２図｛よ同実施例に用いられる周波数特性補正回路の
具体的な回路図、第３図は従来一般のＶＴＲに．おｉる
映像反転現象を説明するための信号波形図、第４回及び
第５図は本考案の−１実施例あ動作説明のための周波弊
特性線図であ−るゆ８・・・周波数特性補正回路、８ａ
・・・中域補正回路、８ｂ・・・高城強一回路。、− ゝ、FIG. 1 is a block diagram of one embodiment of the video playback circuit of the present invention.
Fig. 2 is a specific circuit diagram of the frequency characteristic correction circuit used in the same embodiment, and Fig. 3 is a specific circuit diagram of a conventional general VTR. Figures 4 and 5 are signal waveform diagrams for explaining the video inversion phenomenon, and frequency characteristic diagrams for explaining the operation of the first embodiment of the present invention. Frequency characteristic correction circuit, 8a
... Mid-range correction circuit, 8b... Koichi Takagi circuit. ,−ゝ,

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 映像信号再生回路系に周波数特性補正回路を設け、この
回路に通常再生モード時と特殊再生モード時とで異なる
モード切換信号を供給し、モード切換に応じて高城強調
周波数及び強調量を適宜可変できるようにしたことを特
徴とする映像再生回路。A frequency characteristic correction circuit is provided in the video signal reproduction circuit system, and different mode switching signals are supplied to this circuit in normal reproduction mode and special reproduction mode, and the Takagi emphasis frequency and emphasis amount can be varied as appropriate according to the mode switching. A video playback circuit characterized by: