[go: up one dir, main page]

JPS55130228A - Step generator - Google Patents

Step generator

Info

Publication number
JPS55130228A
JPS55130228A JP3796379A JP3796379A JPS55130228A JP S55130228 A JPS55130228 A JP S55130228A JP 3796379 A JP3796379 A JP 3796379A JP 3796379 A JP3796379 A JP 3796379A JP S55130228 A JPS55130228 A JP S55130228A
Authority
JP
Japan
Prior art keywords
switches
coder
plus
switch
resistances
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
JP3796379A
Other languages
Japanese (ja)
Other versions
JPS6059774B2 (en
Inventor
Michinobu Ohata
Masao Yamazawa
Toshihiko Matsumura
Hisami Tanaka
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP3796379A priority Critical patent/JPS6059774B2/en
Publication of JPS55130228A publication Critical patent/JPS55130228A/en
Publication of JPS6059774B2 publication Critical patent/JPS6059774B2/en
Expired 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
    • H03M1/66—Digital/analogue converters
    • H03M1/74—Simultaneous conversion

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Analogue/Digital Conversion (AREA)

Abstract

PURPOSE:To obtain a step generator for both the PCM companding coder and decoder which can generate the step voltage corresponding to A and mu sides, by giving the control from the outside to the switch of the step generator consisting of the resistance and switch groups. CONSTITUTION:Resistances R plus 10, 12 and 14 of the same resistance value are connected as shown in the diagram and along with switches SW1-SW16 plus switches S20 and S22, and then the earth plus the positive and negative reference voltage + or -Vref are connected across the resistances. Thus a companding coder is formed. When this circuit is used as the coder of the mu side, switches S22 and S20 are turned on and off respectively. While switches S22 and S20 are turned off and on respectively when the circuit is used as the coder of the A side. As a result, each corresponding step voltage can be obtained via switches SW1-SW16. Both the resistance group and switch group can be formed into IC easily, and the decoder can also be formed in nearly the same constitution.
JP3796379A 1979-03-30 1979-03-30 step generator Expired JPS6059774B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3796379A JPS6059774B2 (en) 1979-03-30 1979-03-30 step generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3796379A JPS6059774B2 (en) 1979-03-30 1979-03-30 step generator

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP6025685A Division JPS60216630A (en) 1985-03-25 1985-03-25 step generator

Publications (2)

Publication Number Publication Date
JPS55130228A true JPS55130228A (en) 1980-10-08
JPS6059774B2 JPS6059774B2 (en) 1985-12-26

Family

ID=12512208

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3796379A Expired JPS6059774B2 (en) 1979-03-30 1979-03-30 step generator

Country Status (1)

Country Link
JP (1) JPS6059774B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5792919A (en) * 1980-11-29 1982-06-09 Fujitsu Ltd Code converter
JPS61296824A (en) * 1985-06-25 1986-12-27 Sharp Corp Voltage generating circuit
JPS6383835U (en) * 1986-11-20 1988-06-01

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5792919A (en) * 1980-11-29 1982-06-09 Fujitsu Ltd Code converter
JPS628051B2 (en) * 1980-11-29 1987-02-20 Fujitsu Ltd
JPS61296824A (en) * 1985-06-25 1986-12-27 Sharp Corp Voltage generating circuit
JPS6383835U (en) * 1986-11-20 1988-06-01
JPH0323713Y2 (en) * 1986-11-20 1991-05-23

Also Published As

Publication number Publication date
JPS6059774B2 (en) 1985-12-26

Similar Documents

Publication Publication Date Title
JPS55130228A (en) Step generator
JPS5428980A (en) Electric hydraulic conversion device
JPS5239351A (en) Initializing pulse generating circuit
JPS51147240A (en) Shaping circuit of wave-form
JPS5237759A (en) Trigger circuit
JPS5342848A (en) Current limiting circuit for two wire type transmitter
JPS5757028A (en) Driving circuit
JPS5780826A (en) Waveform shaping circuit
JPS54148358A (en) Diode gate circuit
JPS5430812A (en) Envelope signal generator
JPS52141585A (en) Variable resistor
JPS5277558A (en) Variable resistance circuit
JPS549389A (en) Temprature controller
JPS53133359A (en) Switching circuit
JPS55151806A (en) Signal level control circuit
JPS56136022A (en) Optional waveform generator
JPS53120159A (en) Voltage clamp circuit
JPS52139349A (en) Variable delay circuit
JPS535715A (en) Control de vice for energizing electric generator
JPS533317A (en) Sound source apparatus for electronic music instrument
JPS5229151A (en) Logical circuit
JPS5293376A (en) Voltage generation circuit
JPS53137387A (en) Senser circuit
JPS5687122A (en) Frequency function generator
JPS5333001A (en) Inter-selective-call receiver circuit