JPS57203295A - Digital recorder - Google Patents
Digital recorderInfo
- 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
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.
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)
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 |
-
1981
- 1981-06-10 JP JP56088132A patent/JPS57203295A/en active Pending
Cited By (1)
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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