DE2725241C2 - - Google Patents

Info

Publication number
DE2725241C2
DE2725241C2 DE19772725241 DE2725241A DE2725241C2 DE 2725241 C2 DE2725241 C2 DE 2725241C2 DE 19772725241 DE19772725241 DE 19772725241 DE 2725241 A DE2725241 A DE 2725241A DE 2725241 C2 DE2725241 C2 DE 2725241C2
Authority
DE
Germany
Prior art keywords
amplifier
function signal
signal
depth compensation
frequency
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.)
Expired
Application number
DE19772725241
Other languages
German (de)
English (en)
Other versions
DE2725241B1 (de
Inventor
Dieter Dipl.-Ing. 8520 Erlangen Hassler
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to DE19772725241 priority Critical patent/DE2725241B1/de
Publication of DE2725241B1 publication Critical patent/DE2725241B1/de
Application granted granted Critical
Publication of DE2725241C2 publication Critical patent/DE2725241C2/de
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
    • G01S7/52023—Details of receivers
    • G01S7/52033—Gain control of receivers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/36—Detecting the response signal, e.g. electronic circuits specially adapted therefor
    • G01N29/40—Detecting the response signal, e.g. electronic circuits specially adapted therefor by amplitude filtering, e.g. by applying a threshold or by gain control
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/005—Control by a pilot signal

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Radiology & Medical Imaging (AREA)
  • Medical Informatics (AREA)
  • Biochemistry (AREA)
  • Biophysics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Analytical Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Immunology (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
DE19772725241 1977-06-03 1977-06-03 Tiefenausgleichverstaerker fuer Ultraschall-Bildgeraete Granted DE2725241B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19772725241 DE2725241B1 (de) 1977-06-03 1977-06-03 Tiefenausgleichverstaerker fuer Ultraschall-Bildgeraete

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772725241 DE2725241B1 (de) 1977-06-03 1977-06-03 Tiefenausgleichverstaerker fuer Ultraschall-Bildgeraete

Publications (2)

Publication Number Publication Date
DE2725241B1 DE2725241B1 (de) 1978-06-29
DE2725241C2 true DE2725241C2 (enrdf_load_stackoverflow) 1979-03-01

Family

ID=6010711

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19772725241 Granted DE2725241B1 (de) 1977-06-03 1977-06-03 Tiefenausgleichverstaerker fuer Ultraschall-Bildgeraete

Country Status (1)

Country Link
DE (1) DE2725241B1 (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
DE2725241B1 (de) 1978-06-29

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Legal Events

Date Code Title Description
8320 Willingness to grant licences declared (paragraph 23)
8339 Ceased/non-payment of the annual fee