JPS5738092A - Compensator for differentiation phase - Google Patents

Compensator for differentiation phase

Info

Publication number
JPS5738092A
JPS5738092A JP11317080A JP11317080A JPS5738092A JP S5738092 A JPS5738092 A JP S5738092A JP 11317080 A JP11317080 A JP 11317080A JP 11317080 A JP11317080 A JP 11317080A JP S5738092 A JPS5738092 A JP S5738092A
Authority
JP
Japan
Prior art keywords
input signal
signal
circuit
video input
converter
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
Application number
JP11317080A
Other languages
Japanese (ja)
Inventor
Toru Sekiguchi
Mineo Mizukami
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP11317080A priority Critical patent/JPS5738092A/en
Publication of JPS5738092A publication Critical patent/JPS5738092A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/44—Colour synchronisation

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

PURPOSE:To enable to compensate the differentiation phase chracateristics of a video signal easily, by controlling a differentiation phase distortion compensation data digitized to a video input signal corresponding to the signal level of each time of the video input signal. CONSTITUTION:A video input signal converted into a digital signal at an A/D converter 1 is compensated with the compensation data corresponding to the input signal level of an ROM2. Next, the output of a switch S1 is applied to the upper rank 1-bit at a D/A converter 4 to determine the polarity of phase compensation amount and inputted to a phase modulation circuit 6 via a compensation adjusting variable resistor 5. A clock signal led or delayed is outputted to a D/A converter 4 based on an input signal to a synchronizing clock signal (a). On the other hand, a delay circuit 3 compensates the operation time from the ROM2 to the circuit 6. The differentiation phase characteristics can be compensated easily by taking the timing converting the digital video input signal via the circuit 3 to an analog signal with the clock output of the circuit 7.
JP11317080A 1980-08-18 1980-08-18 Compensator for differentiation phase Pending JPS5738092A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11317080A JPS5738092A (en) 1980-08-18 1980-08-18 Compensator for differentiation phase

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11317080A JPS5738092A (en) 1980-08-18 1980-08-18 Compensator for differentiation phase

Publications (1)

Publication Number Publication Date
JPS5738092A true JPS5738092A (en) 1982-03-02

Family

ID=14605324

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11317080A Pending JPS5738092A (en) 1980-08-18 1980-08-18 Compensator for differentiation phase

Country Status (1)

Country Link
JP (1) JPS5738092A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60114097A (en) * 1983-11-25 1985-06-20 Matsushita Electric Ind Co Ltd Correction circuit of color difference signal
JPS60132490A (en) * 1983-11-21 1985-07-15 アールシーエー　トムソン　ライセンシング　コーポレーシヨン Device for correcting hue

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60132490A (en) * 1983-11-21 1985-07-15 アールシーエー　トムソン　ライセンシング　コーポレーシヨン Device for correcting hue
JPS60114097A (en) * 1983-11-25 1985-06-20 Matsushita Electric Ind Co Ltd Correction circuit of color difference signal

Similar Documents

Publication Publication Date Title
JPS6468022A (en) Differential analog/digital converter and method of analog/digital conversion
ES8706004A1 (en) Digital delay interpolation filter with amplitude and phase compensation
SE9202994D0 (en) ARRANGEMENTS FOR ANALOGUE / DIGITAL CONVERSION
KR890016551A (en) Sampling frequency converter
EP0361965A3 (en) Pulse width modulation type digital-to-analog converter
JPS57208768A (en) Digitizing system for video signal
EP0178044A3 (en) Analogue-to-digital converting apparatus for video signals
JPS5738092A (en) Compensator for differentiation phase
JPS56126390A (en) A-d converting circuit of video signal
GB2232023B (en) Analogue to digital converter
JPS6455788A (en) Data interpolating device for digital signal
JPS56169422A (en) Phase synchronizing circuit
WO1988000648A3 (en) Throttle-position signal generator for an electronic fuel-injection system
JPS55166339A (en) Offset compensating circuit
JPS5767383A (en) Jitter correction device
JPS57109486A (en) Time base error compensation device
JPS57148421A (en) Nonlinear digital-to-analog converter
JPS55166333A (en) Digital phase modulator
JPS57201382A (en) Digital television set
JPS6429173A (en) Velocity modulation signal generating circuit
JPS53141556A (en) Piezo-electric temperature compensating oscillator of digital control type
JPS57107689A (en) Sampling pulse correcting system
JPS57186826A (en) Analog-to-digital converter
JPS53147185A (en) Digital type computer
JPS6432507A (en) Fm demodulation circuit