JPS57203295A - Digital recorder - Google Patents

Digital recorder

Info

Publication number
JPS57203295A
JPS57203295A JP56088132A JP8813281A JPS57203295A JP S57203295 A JPS57203295 A JP S57203295A JP 56088132 A JP56088132 A JP 56088132A JP 8813281 A JP8813281 A JP 8813281A JP S57203295 A JPS57203295 A JP S57203295A
Authority
JP
Japan
Prior art keywords
signal
memory
data
stored
detecting
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
JP56088132A
Other languages
Japanese (ja)
Inventor
Shigeru Hosoda
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 JP56088132A priority Critical patent/JPS57203295A/en
Publication of JPS57203295A publication Critical patent/JPS57203295A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C7/00—Arrangements for writing information into, or reading information out from, a digital store
    • G11C7/16—Storage of analogue signals in digital stores using an arrangement comprising analogue/digital [A/D] converters, digital memories and digital/analogue [D/A] converters 

Landscapes

  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)

Abstract

PURPOSE:To reduce the volume of data to be stored in a memory to make it possible to use a small capacitance memory by detecting a no-signal period and storing a no-signal period data in case of converting an analog signal into a digital one and storing the digital signal. CONSTITUTION:When the level of an analog signal from an input terminal 1 is supervised and a no-signal detecting signal is outputted from a no-signal detecting circuit 8, a control circuit 4 keeps the address of an address specifying circuit counted-up status by one and an AND gate is closed and an AND gate 13 is opened through an inverter 10. Consequently an output from an AD converter 2 is not inputted to a memory 3 and a no-signal period data is inputted and stored in the memory 3. By adopting a system to record the no-signal period data without AD conversion and recording of the input signal of the no-signal division, the volume of data to be stored in the memory is reduced and the small capacitance memory can be used.
JP56088132A 1981-06-10 1981-06-10 Digital recorder Pending JPS57203295A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56088132A JPS57203295A (en) 1981-06-10 1981-06-10 Digital recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56088132A JPS57203295A (en) 1981-06-10 1981-06-10 Digital recorder

Publications (1)

Publication Number Publication Date
JPS57203295A true JPS57203295A (en) 1982-12-13

Family

ID=13934394

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56088132A Pending JPS57203295A (en) 1981-06-10 1981-06-10 Digital recorder

Country Status (1)

Country Link
JP (1) JPS57203295A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01217798A (en) * 1988-02-25 1989-08-31 Pioneer Answerphone Mfg Corp Sound recording and reproducing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01217798A (en) * 1988-02-25 1989-08-31 Pioneer Answerphone Mfg Corp Sound recording and reproducing device

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