JPS5511601A - Ppm modulator circuit - Google Patents
Ppm modulator circuitInfo
- 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
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
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)
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)
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 |
-
1978
- 1978-07-11 JP JP8351778A patent/JPS5511601A/en active Pending
Patent Citations (4)
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)
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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