JPS5787237A - Nonlinear analogue-digital converting circuit - Google Patents

Nonlinear analogue-digital converting circuit

Info

Publication number
JPS5787237A
JPS5787237A JP16309980A JP16309980A JPS5787237A JP S5787237 A JPS5787237 A JP S5787237A JP 16309980 A JP16309980 A JP 16309980A JP 16309980 A JP16309980 A JP 16309980A JP S5787237 A JPS5787237 A JP S5787237A
Authority
JP
Japan
Prior art keywords
signal
analogue
converting circuit
circuit
digital converting
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.)
Granted
Application number
JP16309980A
Other languages
Japanese (ja)
Other versions
JPH0125252B2 (en
Inventor
Kazuhiko Shibata
Satoshi Akaishi
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP16309980A priority Critical patent/JPS5787237A/en
Publication of JPS5787237A publication Critical patent/JPS5787237A/en
Publication of JPH0125252B2 publication Critical patent/JPH0125252B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Analogue/Digital Conversion (AREA)

Abstract

PURPOSE:To obtain information effective for diagnosis, by clarifying information included in the signal from a strong reflection part and its boundaries by using the output of a bias circuit as a reference input of an analogue-digital converting circuit. CONSTITUTION:A part of a video signal d0 detected by a detecting circuit 4 has DC components eliminated by a high-frequency stop filter 16, and a signal d1 which is outputted after attenuation of high frequency components is added to a constant bias voltage 20 analogically, and an output signal d3 is sent as a reference voltage VRT of an analogue-digital converting circuit 18. The analogue signal subjected to analogue-digital conversion is transmitted as an analogue signal d4 again through a storage circuit 6 and a D/A converting circuit 7. Since the rise of the video signal is emphasized in this obtained signal waveform, detailed information buried in a strong reflection signal are clarified.
JP16309980A 1980-11-18 1980-11-18 Nonlinear analogue-digital converting circuit Granted JPS5787237A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16309980A JPS5787237A (en) 1980-11-18 1980-11-18 Nonlinear analogue-digital converting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16309980A JPS5787237A (en) 1980-11-18 1980-11-18 Nonlinear analogue-digital converting circuit

Publications (2)

Publication Number Publication Date
JPS5787237A true JPS5787237A (en) 1982-05-31
JPH0125252B2 JPH0125252B2 (en) 1989-05-17

Family

ID=15767152

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16309980A Granted JPS5787237A (en) 1980-11-18 1980-11-18 Nonlinear analogue-digital converting circuit

Country Status (1)

Country Link
JP (1) JPS5787237A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5986330A (en) * 1982-11-09 1984-05-18 Pioneer Electronic Corp Analog-digital converting system
JPH08206111A (en) * 1995-02-06 1996-08-13 Ge Yokogawa Medical Syst Ltd Method for displaying ultrasonic image and ultrasonic diagnostic apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5986330A (en) * 1982-11-09 1984-05-18 Pioneer Electronic Corp Analog-digital converting system
JPH08206111A (en) * 1995-02-06 1996-08-13 Ge Yokogawa Medical Syst Ltd Method for displaying ultrasonic image and ultrasonic diagnostic apparatus

Also Published As

Publication number Publication date
JPH0125252B2 (en) 1989-05-17

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