JPS55138938A - Data collection device - Google Patents

Data collection device

Info

Publication number
JPS55138938A
JPS55138938A JP4662279A JP4662279A JPS55138938A JP S55138938 A JPS55138938 A JP S55138938A JP 4662279 A JP4662279 A JP 4662279A JP 4662279 A JP4662279 A JP 4662279A JP S55138938 A JPS55138938 A JP S55138938A
Authority
JP
Japan
Prior art keywords
circuit
multiplexer
signal
circuits
sampling
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
JP4662279A
Other languages
Japanese (ja)
Inventor
Takao Fujisawa
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 JP4662279A priority Critical patent/JPS55138938A/en
Publication of JPS55138938A publication Critical patent/JPS55138938A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
    • H04B14/04—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using pulse code modulation
    • H04B14/044—Sample and hold circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

PURPOSE:To get rid of an output error by connecting a sampling hold (S/H) circuit to a multiplexer through an electric discharge blocking circuit. CONSTITUTION:The S/H circuit 11 consists of a switch SW1, an operation amplifier IC1 and a capacitor C1, and a signal x1 is subjected to sampling by a sampling hold signal S1 of the control circuit 14, and is input. In the S/H circuit 12, too, a signal x2 is subjected to sampling by a signal S2 and is input in the same way as the foregoing. Outputs of the S/H circuits 11, 12 are led into a multiplexer 13 through the electric discharge blocking circuits 15, 16 consisting of resistors R1, R2. And an error caused by storage capacity of the multiplexer 13 and inter-electrode capacity can be prevented by the electric discharge blocking circuits 15, 16. The multiplexer 13 changes outputs of the S/H circuits 11, 12 to TDM by the channel changeover signals M1, M2.
JP4662279A 1979-04-18 1979-04-18 Data collection device Pending JPS55138938A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4662279A JPS55138938A (en) 1979-04-18 1979-04-18 Data collection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4662279A JPS55138938A (en) 1979-04-18 1979-04-18 Data collection device

Publications (1)

Publication Number Publication Date
JPS55138938A true JPS55138938A (en) 1980-10-30

Family

ID=12752387

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4662279A Pending JPS55138938A (en) 1979-04-18 1979-04-18 Data collection device

Country Status (1)

Country Link
JP (1) JPS55138938A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6429035A (en) * 1987-07-24 1989-01-31 Yamatake Honeywell Co Ltd Two-wire data transmission system
JPH02183623A (en) * 1989-01-10 1990-07-18 Fujitsu Ltd Sample and hold circuit
US5317203A (en) * 1991-04-25 1994-05-31 Sharp Kabushiki Kaisha Sample-and-hold circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6429035A (en) * 1987-07-24 1989-01-31 Yamatake Honeywell Co Ltd Two-wire data transmission system
JPH02183623A (en) * 1989-01-10 1990-07-18 Fujitsu Ltd Sample and hold circuit
US5317203A (en) * 1991-04-25 1994-05-31 Sharp Kabushiki Kaisha Sample-and-hold circuit

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