JPS6449323A - Off-set compensating circuit - Google Patents

Off-set compensating circuit

Info

Publication number
JPS6449323A
JPS6449323A JP20503187A JP20503187A JPS6449323A JP S6449323 A JPS6449323 A JP S6449323A JP 20503187 A JP20503187 A JP 20503187A JP 20503187 A JP20503187 A JP 20503187A JP S6449323 A JPS6449323 A JP S6449323A
Authority
JP
Japan
Prior art keywords
convertor
positive
supplied
filter
output out
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
JP20503187A
Other languages
Japanese (ja)
Inventor
Masami Tsuchida
Ichiro Miyake
Tokihiro Takahashi
Shinichi Wakumura
Yoshimi Iso
Takao Arai
Hiroo Okamoto
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.)
Hitachi Ltd
Pioneer Corp
Original Assignee
Hitachi Ltd
Pioneer Electronic Corp
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 Hitachi Ltd, Pioneer Electronic Corp filed Critical Hitachi Ltd
Priority to JP20503187A priority Critical patent/JPS6449323A/en
Priority to US07/234,874 priority patent/US4965867A/en
Publication of JPS6449323A publication Critical patent/JPS6449323A/en
Pending legal-status Critical Current

Links

Landscapes

  • Analogue/Digital Conversion (AREA)

Abstract

PURPOSE:To execute exact oft-set compensation even to an input signal which is not realized in a positive and negative nonsynmmetric waveform or a positive and negative equal probability by adding not only the code bit of digital data but also the amplitude information of an input analog signal as a control signal in an off-set compensating circuit. CONSTITUTION:For an input analog signal IN, only a necessary band component is removed by a filter 4 and supplied to an A/D convertor 1 and outputted as a digital signal output OUT by this A/D convertor 1. A PWM wave is prepared to correspond to the data of high order side (m) of the digital signal output OUT by a pulse width modulating wave generating means 5. This PWM wave is supplied to an integrator 3 and an off-set correcting voltage VCMP is prepared here. Then, this off-set correcting voltage VCMP is fed-back through the filter 4 and the off-set compensation of the above-mentioned circuit system is executed.
JP20503187A 1987-08-20 1987-08-20 Off-set compensating circuit Pending JPS6449323A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP20503187A JPS6449323A (en) 1987-08-20 1987-08-20 Off-set compensating circuit
US07/234,874 US4965867A (en) 1987-08-20 1988-08-22 Offset compensation circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20503187A JPS6449323A (en) 1987-08-20 1987-08-20 Off-set compensating circuit

Publications (1)

Publication Number Publication Date
JPS6449323A true JPS6449323A (en) 1989-02-23

Family

ID=16500292

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20503187A Pending JPS6449323A (en) 1987-08-20 1987-08-20 Off-set compensating circuit

Country Status (1)

Country Link
JP (1) JPS6449323A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH048007A (en) * 1990-04-26 1992-01-13 Oki Electric Ind Co Ltd Automatic gain control circuit
JPH0449531A (en) * 1990-06-19 1992-02-18 Matsushita Electric Ind Co Ltd optical disc servo system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57157627A (en) * 1981-03-23 1982-09-29 Fujitsu Ltd Offset compensating system for code converting circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57157627A (en) * 1981-03-23 1982-09-29 Fujitsu Ltd Offset compensating system for code converting circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH048007A (en) * 1990-04-26 1992-01-13 Oki Electric Ind Co Ltd Automatic gain control circuit
JPH0449531A (en) * 1990-06-19 1992-02-18 Matsushita Electric Ind Co Ltd optical disc servo system

Similar Documents

Publication Publication Date Title
CA2033301A1 (en) Modulation device with input signal modification for correction of amplifier nonlinearities
JPS5757025A (en) Waveform converting circuit
MY109525A (en) Horizontal deflection waveform correction circuit
EP0194791A3 (en) Digitally implemented modulators
EP0580269A3 (en)
JPS6449323A (en) Off-set compensating circuit
ES443403A1 (en) Method and device for electronic control with positive safety
CH645503GA3 (en) Battery-operated electronic clock with voice synthesising
MY106822A (en) Digital fm synthesizer for record circuitry.
AU529958B2 (en) Analogue signal converter
SU1663435A1 (en) Device for information recording
SU1356184A1 (en) Balanced modulator
JPS55166339A (en) Offset compensating circuit
JPS57148421A (en) Nonlinear digital-to-analog converter
EP0180461A3 (en) Improvements in or relating to digital to analogue converters
SU1188761A1 (en) Square-law function generator
JPS56141587A (en) Voice watch
GB1294048A (en) Pulse code modulation transmitter
SU815907A1 (en) Delta-modulator
SU828409A1 (en) Delta-modulator
DE69023714D1 (en) Method for waveform data correction in modulation of digital signals and baseband signal generator using the data generated by this method.
GB1500996A (en) Analogue/digital or digital/analogue converters
JPS5513504A (en) Phase modulation system
JPS5798138A (en) Tracking controller for optical information reproduction
ES8104683A1 (en) PCM and PAM conversion circuit including signal level variation on the PCM portion of the circuit