JPS5511601A - Ppm modulator circuit - Google Patents

Ppm modulator circuit

Info

Publication number
JPS5511601A
JPS5511601A JP8351778A JP8351778A JPS5511601A JP S5511601 A JPS5511601 A JP S5511601A JP 8351778 A JP8351778 A JP 8351778A JP 8351778 A JP8351778 A JP 8351778A JP S5511601 A JPS5511601 A JP S5511601A
Authority
JP
Japan
Prior art keywords
signal
cardic
sound
biological
sampling period
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
JP8351778A
Other languages
Japanese (ja)
Inventor
Toshio Shirasaka
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP8351778A priority Critical patent/JPS5511601A/en
Publication of JPS5511601A publication Critical patent/JPS5511601A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To secure a display of the biological signal on the ultrasonic diagnosis device or the like without impairing the drawing performance of the waveform by displaying the biological signal variation amount after converting it into the pulse duration of PPM.
CONSTITUTION: The biological signals are processed through the circuit shown by the dotted line in the ultrasonic diagnosis device. In other words, the cardic sound signal (i) amplified by the biological signal amplifier such as cardic sound amplifier 16 is supplied to 1st and 2nd comparators 19 and 20 via 1st and 2nd sample holding circuit 17 and 18 each. On the other hand, exclusive logic curcuit 21 generates output signal (s), and the pulse duration of signal (s) is proportional to the voltage variation value of signal (i) which is fluctuated during the sampling period of circuits 17 and 18. Then 2nd gate circuit 25 generates signal (t) which is added 13 to rate pulse (g) to generate Z-axis signal (u) and then to give the luminance modulation to XY display 15. Thus, the voltage variation amount of the cardic sound is displayed in the form of the bright line through fluctuation during the sampling period for the biological signal (cardic sound signal) (c).
COPYRIGHT: (C)1980,JPO&Japio
JP8351778A 1978-07-11 1978-07-11 Ppm modulator circuit Pending JPS5511601A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8351778A JPS5511601A (en) 1978-07-11 1978-07-11 Ppm modulator circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8351778A JPS5511601A (en) 1978-07-11 1978-07-11 Ppm modulator circuit

Publications (1)

Publication Number Publication Date
JPS5511601A true JPS5511601A (en) 1980-01-26

Family

ID=13804667

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8351778A Pending JPS5511601A (en) 1978-07-11 1978-07-11 Ppm modulator circuit

Country Status (1)

Country Link
JP (1) JPS5511601A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58217989A (en) * 1982-06-14 1983-12-19 横河電機株式会社 Crt display
JPS5978390A (en) * 1982-10-28 1984-05-07 株式会社メデイコ Digital tv type display unit

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50120737A (en) * 1974-03-08 1975-09-22
JPS50120736A (en) * 1974-03-08 1975-09-22
JPS51817A (en) * 1974-06-20 1976-01-07 Fujitsu Ltd
JPS52146525A (en) * 1976-05-29 1977-12-06 Midwest Analog & Digital Inc Multichannel data color indicator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50120737A (en) * 1974-03-08 1975-09-22
JPS50120736A (en) * 1974-03-08 1975-09-22
JPS51817A (en) * 1974-06-20 1976-01-07 Fujitsu Ltd
JPS52146525A (en) * 1976-05-29 1977-12-06 Midwest Analog & Digital Inc Multichannel data color indicator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58217989A (en) * 1982-06-14 1983-12-19 横河電機株式会社 Crt display
JPH059797B2 (en) * 1982-06-14 1993-02-05 Yokogawa Electric Corp
JPS5978390A (en) * 1982-10-28 1984-05-07 株式会社メデイコ Digital tv type display unit
JPH0361951B2 (en) * 1982-10-28 1991-09-24 Medeiko Kk

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