JPS56134306A - Pulse count modulation adaptor for three-channel - Google Patents

Pulse count modulation adaptor for three-channel

Info

Publication number
JPS56134306A
JPS56134306A JP3747980A JP3747980A JPS56134306A JP S56134306 A JPS56134306 A JP S56134306A JP 3747980 A JP3747980 A JP 3747980A JP 3747980 A JP3747980 A JP 3747980A JP S56134306 A JPS56134306 A JP S56134306A
Authority
JP
Japan
Prior art keywords
channel
bits
adaptor
converter
pcm
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
JP3747980A
Other languages
Japanese (ja)
Inventor
Takashi Takeuchi
Shigeru Yamazaki
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 JP3747980A priority Critical patent/JPS56134306A/en
Publication of JPS56134306A publication Critical patent/JPS56134306A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10527—Audio or video recording; Data buffering arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)

Abstract

PURPOSE:To obtain a 3-channel PCM adaptor by constituting so that an audio signal of the third channel can be quantized, compressed, recorded and reproduced, in an acoustic PCM recording and reproducing equipment which has utilized a VTR. CONSTITUTION:The third channel signal C is input to the A/D converter 14 through the LPF 12, etc., A/D conversion of 12 bits is executed in said converter, and the compressed information is sent to the latch circuit 19. As for the signals A, B, 12 bits which have disregarded 2 bits of low rank among 14 bits are converted to 9 bits by compressing 2 tangential lines, and 14 bits each are alternately input to the recording circuit 6 through the multiplexer 18, etc. At the time of reproduction, the output from the reproducing circuit 7 is arrayed in the 28 bit latch circuit 22. The A and B channels send out signals to the D/A converter 5 through the multiplexer 23, etc. The channel C outputs a signal through the expanding shift register 24 and the LPF12. According to such a constitution, it is possible to obtain a 3- channel PCM adaptor.
JP3747980A 1980-03-26 1980-03-26 Pulse count modulation adaptor for three-channel Pending JPS56134306A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3747980A JPS56134306A (en) 1980-03-26 1980-03-26 Pulse count modulation adaptor for three-channel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3747980A JPS56134306A (en) 1980-03-26 1980-03-26 Pulse count modulation adaptor for three-channel

Publications (1)

Publication Number Publication Date
JPS56134306A true JPS56134306A (en) 1981-10-21

Family

ID=12498646

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3747980A Pending JPS56134306A (en) 1980-03-26 1980-03-26 Pulse count modulation adaptor for three-channel

Country Status (1)

Country Link
JP (1) JPS56134306A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52102609A (en) * 1976-02-25 1977-08-29 Hitachi Ltd Pcm signal transmission record regenerator
JPS5525843A (en) * 1978-08-11 1980-02-23 Sony Corp Recorder for multi-channel signal

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52102609A (en) * 1976-02-25 1977-08-29 Hitachi Ltd Pcm signal transmission record regenerator
JPS5525843A (en) * 1978-08-11 1980-02-23 Sony Corp Recorder for multi-channel signal

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