JPH0324787U - - Google Patents
Info
- Publication number
- JPH0324787U JPH0324787U JP8462989U JP8462989U JPH0324787U JP H0324787 U JPH0324787 U JP H0324787U JP 8462989 U JP8462989 U JP 8462989U JP 8462989 U JP8462989 U JP 8462989U JP H0324787 U JPH0324787 U JP H0324787U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- output
- circuit
- switching
- input
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Television Signal Processing For Recording (AREA)
Description
第１図は本考案の疑似ＲＦ信号発生装置を備え
たビデオ信号再生系の電気的構成を示すブロツク
線図、第２図は同装置の各部の信号波形図、第３
図はビデオテープ上の記録状態を示す図、第４図
は従来装置におけるトリツクプレー時のＲＦ信号
およびビデオ信号の波形図、第５図ａ，ｂは子機
内のＡＧＣ回路のトリツクプレー時の入出力関係
を示す波形図、第６図ａ，ｂは子機内のＡＧＣ回
路のノーマルプレー時の入出力関係を示す波形図
である。
３……ＲＦイコライザ回路、４……出力切換回
路、５……発信器、６……ＲＦ信号検出回路、７
……ＦＭ復調回路。
FIG. 1 is a block diagram showing the electrical configuration of a video signal reproducing system equipped with the pseudo RF signal generating device of the present invention, FIG. 2 is a signal waveform diagram of each part of the device, and FIG.
The figure shows the recording state on a video tape, Figure 4 is a waveform diagram of the RF signal and video signal during trick play in a conventional device, and Figures 5a and b show the input of the AGC circuit in the slave unit during trick play. Waveform Diagrams Showing Output Relationships FIGS. 6a and 6b are waveform diagrams showing input/output relationships during normal play of the AGC circuit in the handset. 3...RF equalizer circuit, 4...Output switching circuit, 5...Transmitter, 6...RF signal detection circuit, 7
...FM demodulation circuit.
Claims (1)
形整形されたＲＦ信号が入力されるとともに、こ
の入力されたＲＦ信号に基き、該ＲＦ信号の欠落
部分を検出したときに切換指示信号を出力するＲ
Ｆ信号検出回路と、 特定レベルの輝度信号に相当するＦＭ周波数信
号を出力する発信器と、 前記ＲＦ信号検出回路から出力される切換指示
信号に基き、該切換指示信号が出力されていない
ときには、前記ＲＦイコライザ回路により波形整
形されたＲＦ信号を次段のＦＭ復調回路に出力し
、切換指示信号が出力されているときには、前記
発信器から出力されるＦＭ周波数信号を次段のＦ
Ｍ復調回路に出力する出力切換回路とを備えたこ
とを特徴とするＶＴＲにおける疑似ＲＦ信号発生
装置。[Claims for Utility Model Registration] An RF signal whose waveform has been shaped by the RF equalizer circuit of the luminance signal processing system is input, and switching is performed when a missing portion of the RF signal is detected based on the input RF signal. R that outputs the instruction signal
an FM signal detection circuit, an oscillator that outputs an FM frequency signal corresponding to a luminance signal of a specific level, and a switching instruction signal output from the RF signal detection circuit, when the switching instruction signal is not output, The RF signal waveform-shaped by the RF equalizer circuit is output to the next stage FM demodulation circuit, and when the switching instruction signal is output, the FM frequency signal output from the oscillator is output to the next stage FM demodulation circuit.
1. A pseudo RF signal generator for a VTR, comprising an output switching circuit for outputting to an M demodulation circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8462989U JPH0324787U (en) | 1989-07-18 | 1989-07-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8462989U JPH0324787U (en) | 1989-07-18 | 1989-07-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0324787U true JPH0324787U (en) | 1991-03-14 |
Family
ID=31633233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8462989U Pending JPH0324787U (en) | 1989-07-18 | 1989-07-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0324787U (en) |
-
1989
- 1989-07-18 JP JP8462989U patent/JPH0324787U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0324787U (en) | ||
| JPS61119483U (en) | ||
| JPS643268U (en) | ||
| JPH0739091Y2 (en) | Noise removal circuit | |
| JPS58164371U (en) | Video recording and playback device | |
| JPS6385977U (en) | ||
| JPH02149101U (en) | ||
| JPS63181153U (en) | ||
| JPH0260374U (en) | ||
| JPS58111567U (en) | AFT control device for TV receivers with built-in VTR | |
| JPS61174066U (en) | ||
| JPS6070970U (en) | Audio signal demodulator for VTR | |
| JPS6230481U (en) | ||
| JPS58152059U (en) | Switching signal generation circuit | |
| JPH01159473U (en) | ||
| JPS5917054U (en) | video tape recorder | |
| JPS6040177U (en) | Test pattern signal generator | |
| JPS6054292U (en) | synchronized recording device | |
| JPH0279683U (en) | ||
| JPS6040173U (en) | magnetic recording and reproducing device | |
| JPH0182581U (en) | ||
| JPS6148467U (en) | ||
| JPH0376208U (en) | ||
| JPS6137186U (en) | VTR recording warning circuit | |
| JPH0361656U (en) |