JPS57201806A - Ultrasonic diagnostic device - Google Patents

Ultrasonic diagnostic device

Info

Publication number
JPS57201806A
JPS57201806A JP56086993A JP8699381A JPS57201806A JP S57201806 A JPS57201806 A JP S57201806A JP 56086993 A JP56086993 A JP 56086993A JP 8699381 A JP8699381 A JP 8699381A JP S57201806 A JPS57201806 A JP S57201806A
Authority
JP
Japan
Prior art keywords
signal
frequency
ultrasonic
delay line
variable delay
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
JP56086993A
Other languages
Japanese (ja)
Other versions
JPS6359106B2 (en
Inventor
Hiromichi Kikuchi
Takashi Hitai
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
Original Assignee
Aloka 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 Aloka Co Ltd filed Critical Aloka Co Ltd
Priority to JP56086993A priority Critical patent/JPS57201806A/en
Publication of JPS57201806A publication Critical patent/JPS57201806A/en
Publication of JPS6359106B2 publication Critical patent/JPS6359106B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
    • G01S7/52017—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00 particularly adapted to short-range imaging
    • G01S7/52046—Techniques for image enhancement involving transmitter or receiver

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

PURPOSE:To obtain a high ultrasonic picture sensitivity with a low momentary transmission output in an ultrasonic transmitting and receiving device, by using a variable delay line to convert the impulse to chirp pulses and transmitting them and compressing them after logarithmic amplification. CONSTITUTION:A transmission impulse 102 is converted to a chirp signal 106 by a variable delay line which has a longer delay time for higher frequency components and the chirp signal 106 is converted to a signal 108 by reducing the frequency. This signal 108 is amplified and is transmitted as ultrasonic waves to receive an echo 110. The transfer frequency band of an ultrasonic transducer is DELTAf=6-4MHz. Next, the frequency reverse conversion of 4 11.6 9MHz is performed after the logarithmic amplification in the dynamic range of Y=120dB. The signal of this frequency reverse conversion is compressed by a similar variable delay line to obtain pulses. When the noise is 60dB=Y/2 (Y is the dynamic range of the logarithmic amplifier) and the delay time difference is denoted as DELTAT, the range after compression is Y(DELTAf.DELTAT)<1/2>=4Y but the noise is not related to the time and is Y/2 still.
JP56086993A 1981-06-08 1981-06-08 Ultrasonic diagnostic device Granted JPS57201806A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56086993A JPS57201806A (en) 1981-06-08 1981-06-08 Ultrasonic diagnostic device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56086993A JPS57201806A (en) 1981-06-08 1981-06-08 Ultrasonic diagnostic device

Publications (2)

Publication Number Publication Date
JPS57201806A true JPS57201806A (en) 1982-12-10
JPS6359106B2 JPS6359106B2 (en) 1988-11-17

Family

ID=13902389

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56086993A Granted JPS57201806A (en) 1981-06-08 1981-06-08 Ultrasonic diagnostic device

Country Status (1)

Country Link
JP (1) JPS57201806A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100406097B1 (en) * 2001-12-26 2003-11-14 주식회사 메디슨 Ultrasound imaging system and method using the weighted chirp signals
KR100406098B1 (en) * 2001-12-26 2003-11-14 주식회사 메디슨 Ultrasound imaging system and method based on simultaneous multiple transmit-focusing using the weighted orthogonal chirp signals
JP2008514921A (en) * 2004-09-24 2008-05-08 ザ・ボーイング・カンパニー Multi-channel multiplexed inspection system and method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5223286A (en) * 1975-08-14 1977-02-22 Raytheon Co Signal processor
JPS5651660A (en) * 1979-09-29 1981-05-09 Nukem Gmbh Method of and apparatus for processing wide band signal having large dynamic range

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5223286A (en) * 1975-08-14 1977-02-22 Raytheon Co Signal processor
JPS5651660A (en) * 1979-09-29 1981-05-09 Nukem Gmbh Method of and apparatus for processing wide band signal having large dynamic range

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100406097B1 (en) * 2001-12-26 2003-11-14 주식회사 메디슨 Ultrasound imaging system and method using the weighted chirp signals
KR100406098B1 (en) * 2001-12-26 2003-11-14 주식회사 메디슨 Ultrasound imaging system and method based on simultaneous multiple transmit-focusing using the weighted orthogonal chirp signals
JP2008514921A (en) * 2004-09-24 2008-05-08 ザ・ボーイング・カンパニー Multi-channel multiplexed inspection system and method

Also Published As

Publication number Publication date
JPS6359106B2 (en) 1988-11-17

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