JPS5734469A - Automatic gain control device in ultrasonic pulse transmission - Google Patents

Automatic gain control device in ultrasonic pulse transmission

Info

Publication number
JPS5734469A
JPS5734469A JP10930680A JP10930680A JPS5734469A JP S5734469 A JPS5734469 A JP S5734469A JP 10930680 A JP10930680 A JP 10930680A JP 10930680 A JP10930680 A JP 10930680A JP S5734469 A JPS5734469 A JP S5734469A
Authority
JP
Japan
Prior art keywords
shift register
signal
clock
output
agc voltage
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
JP10930680A
Other languages
Japanese (ja)
Other versions
JPS6222107B2 (en
Inventor
Shizuo Kurimura
Tsugio Sasaki
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.)
Koden Electronics Co Ltd
Original Assignee
Koden Electronics 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 Koden Electronics Co Ltd filed Critical Koden Electronics Co Ltd
Priority to JP10930680A priority Critical patent/JPS5734469A/en
Publication of JPS5734469A publication Critical patent/JPS5734469A/en
Publication of JPS6222107B2 publication Critical patent/JPS6222107B2/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
    • G01S7/523—Details of pulse systems
    • G01S7/526—Receivers
    • G01S7/529—Gain of receiver varied automatically during pulse-recurrence period

Abstract

PURPOSE:To avoid the effect of noises and the like inputted into a transmitting path by forming an AGC voltage from only the signal which is sent at every period and has a specified pulse width, a pulse interval, and a transmitting strength. CONSTITUTION:A clock (a) including a sampling signal which is synchronized with an incoming ultrasonic signal is formed by a clock generating circuit 6. The clock (a) is a clock signal for a shift register 9. A switching wave is formed by the clock generating circuit 6, and applied to a switching circuit 8. The input data to the shift register 9 is switched to the output signal of a comparator 5 from the output of the shift register 9. Therefore the content of the shift register 9 becomes a ''1'' level when the amplitude of the received signal is larger than the scheduled value under the state the transmission and reception are synchronized. The output of the shift register 9 is smoothed by an integrating circuit 10 to obtain the AGC voltage (e) and a receiving amplifier 2 is controlled by said AGC voltage (e).
JP10930680A 1980-08-11 1980-08-11 Automatic gain control device in ultrasonic pulse transmission Granted JPS5734469A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10930680A JPS5734469A (en) 1980-08-11 1980-08-11 Automatic gain control device in ultrasonic pulse transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10930680A JPS5734469A (en) 1980-08-11 1980-08-11 Automatic gain control device in ultrasonic pulse transmission

Publications (2)

Publication Number Publication Date
JPS5734469A true JPS5734469A (en) 1982-02-24
JPS6222107B2 JPS6222107B2 (en) 1987-05-15

Family

ID=14506846

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10930680A Granted JPS5734469A (en) 1980-08-11 1980-08-11 Automatic gain control device in ultrasonic pulse transmission

Country Status (1)

Country Link
JP (1) JPS5734469A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6268801U (en) * 1985-10-21 1987-04-30
JPH0479705U (en) * 1990-11-26 1992-07-10

Also Published As

Publication number Publication date
JPS6222107B2 (en) 1987-05-15

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