JPS56105311A - Pcm recording and reproducing device - Google Patents

Pcm recording and reproducing device

Info

Publication number
JPS56105311A
JPS56105311A JP782980A JP782980A JPS56105311A JP S56105311 A JPS56105311 A JP S56105311A JP 782980 A JP782980 A JP 782980A JP 782980 A JP782980 A JP 782980A JP S56105311 A JPS56105311 A JP S56105311A
Authority
JP
Japan
Prior art keywords
signal
subtractor
sample values
output
level difference
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
JP782980A
Other languages
Japanese (ja)
Other versions
JPS6329346B2 (en
Inventor
Yasunori Kanazawa
Shinichi Ohashi
Masaharu Kobayashi
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP782980A priority Critical patent/JPS56105311A/en
Publication of JPS56105311A publication Critical patent/JPS56105311A/en
Publication of JPS6329346B2 publication Critical patent/JPS6329346B2/ja
Granted 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
    • H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
    • H03M1/08—Continuously compensating for, or preventing, undesired influence of physical parameters of noise
    • H03M1/0863—Continuously compensating for, or preventing, undesired influence of physical parameters of noise of switching transients, e.g. glitches
    • H03M1/0881—Continuously compensating for, or preventing, undesired influence of physical parameters of noise of switching transients, e.g. glitches by forcing a gradual change from one output level to the next, e.g. soft-start
    • 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

Landscapes

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

Abstract

PURPOSE:To improve the ratio of quantizing noise to signals at the reproducing time without increment of the sampling frequency and the number of quantization bits, by subjecting the level difference between adjacent sample values to the insertion processing digitally. CONSTITUTION:Two digital data V0 and V1 which are taken out synchronously with the sampling period according to time elapse are written in storage device 1 and are read to obtain the absolute value of the difference between data V0 and V1 by subtractor 2, and the 1/n value is obtained by divider 3, and it is added cumulatively in 4 by the clock signal of the frequency (n) times as high as the data rate. The addition signal is given to operating circuit 6 and is added to or subtracted from signal V0 from device 1. This addition or subtraction is determined dependently upon the quantitative relation between V0 and V1 and corresponds as the output of subtractor 2. A staircase wave signal is obtained as the output of circuit 6, and the level difference between two sample values is filled up with a pile of finer steps.
JP782980A 1980-01-28 1980-01-28 Pcm recording and reproducing device Granted JPS56105311A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP782980A JPS56105311A (en) 1980-01-28 1980-01-28 Pcm recording and reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP782980A JPS56105311A (en) 1980-01-28 1980-01-28 Pcm recording and reproducing device

Publications (2)

Publication Number Publication Date
JPS56105311A true JPS56105311A (en) 1981-08-21
JPS6329346B2 JPS6329346B2 (en) 1988-06-13

Family

ID=11676479

Family Applications (1)

Application Number Title Priority Date Filing Date
JP782980A Granted JPS56105311A (en) 1980-01-28 1980-01-28 Pcm recording and reproducing device

Country Status (1)

Country Link
JP (1) JPS56105311A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61184993A (en) * 1985-02-13 1986-08-18 Sony Corp Correcting device for speed error
JPH01177617U (en) * 1988-06-03 1989-12-19
JPH0360526A (en) * 1989-07-28 1991-03-15 Yokogawa Electric Corp D/a converting circuit
JP2019106701A (en) * 2017-12-14 2019-06-27 スティヒティング・イメック・ネーデルラントＳｔｉｃｈｔｉｎｇ ＩＭＥＣ Ｎｅｄｅｒｌａｎｄ Digital power amplifier circuit
JP2021101499A (en) * 2019-12-24 2021-07-08 日本電波工業株式会社 Data output circuit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61184993A (en) * 1985-02-13 1986-08-18 Sony Corp Correcting device for speed error
JPH01177617U (en) * 1988-06-03 1989-12-19
JPH0360526A (en) * 1989-07-28 1991-03-15 Yokogawa Electric Corp D/a converting circuit
JP2019106701A (en) * 2017-12-14 2019-06-27 スティヒティング・イメック・ネーデルラントＳｔｉｃｈｔｉｎｇ ＩＭＥＣ Ｎｅｄｅｒｌａｎｄ Digital power amplifier circuit
JP2021101499A (en) * 2019-12-24 2021-07-08 日本電波工業株式会社 Data output circuit

Also Published As

Publication number Publication date
JPS6329346B2 (en) 1988-06-13

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