JPS5656038A - Analog-digital converting device - Google Patents

Analog-digital converting device

Info

Publication number
JPS5656038A
JPS5656038A JP13206279A JP13206279A JPS5656038A JP S5656038 A JPS5656038 A JP S5656038A JP 13206279 A JP13206279 A JP 13206279A JP 13206279 A JP13206279 A JP 13206279A JP S5656038 A JPS5656038 A JP S5656038A
Authority
JP
Japan
Prior art keywords
circuit
att35
control
sampled
signals
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
JP13206279A
Other languages
Japanese (ja)
Inventor
Tadashi Kojima
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 JP13206279A priority Critical patent/JPS5656038A/en
Publication of JPS5656038A publication Critical patent/JPS5656038A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/18—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Analogue/Digital Conversion (AREA)

Abstract

PURPOSE:To obtain an A/D converting device that requires no high-speed converter by using two systems of multiplexer MX circuits and by assigning one for analog signals for right and left channels CH and the other for range discrimination. CONSTITUTION:In the PCM recorder, left and right CH analog signals are inputted to input terminals 30 and 31 and sampled and held S/H 32 and 33 with sampling pulses from control pulse generation part 42 before being supplied to MX circuit 34. Through switches S1 and S2 of circuit 34, S/H-ed left and right CH sampled signals are changed over sequentially synchronizing with control pulses from control part 42 and sent to attenuator ATT35 and range detecting circuit 36. The signal range- detected by circuit 36 is stored in latch circuit 38 and signals, corresponding to left and right CHs, from circuit 38 are supplied to ATT35 via OR circuit 40 to control the attenuation of ATT35. The sampled signal from ATT35 is A/D-converted 12 and sent to the PCM recording system together with sorting data from circuit 38.
JP13206279A 1979-10-13 1979-10-13 Analog-digital converting device Pending JPS5656038A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13206279A JPS5656038A (en) 1979-10-13 1979-10-13 Analog-digital converting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13206279A JPS5656038A (en) 1979-10-13 1979-10-13 Analog-digital converting device

Publications (1)

Publication Number Publication Date
JPS5656038A true JPS5656038A (en) 1981-05-16

Family

ID=15072612

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13206279A Pending JPS5656038A (en) 1979-10-13 1979-10-13 Analog-digital converting device

Country Status (1)

Country Link
JP (1) JPS5656038A (en)

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