JPS6449166A - Dai demodulating circuit - Google Patents
Dai demodulating circuitInfo
- Publication number
- JPS6449166A JPS6449166A JP20502287A JP20502287A JPS6449166A JP S6449166 A JPS6449166 A JP S6449166A JP 20502287 A JP20502287 A JP 20502287A JP 20502287 A JP20502287 A JP 20502287A JP S6449166 A JPS6449166 A JP S6449166A
- Authority
- JP
- Japan
- Prior art keywords
- bit
- data
- sub
- output
- code
- 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
Links
Landscapes
- Signal Processing For Digital Recording And Reproducing (AREA)
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
Abstract
PURPOSE:To reduce the load of a system controller and to hold the expanding property of an apparatus by selecting a case to output all U-bit data in a DAI signal and a case to output only a Q bit. CONSTITUTION:In a demodulating circuit for a biphase-modulated DAI signal, a sub-code Q detector 17 extracts only the 'Q' bit out of U-bit data and outputs the extracted bit to an output (e) as sub-code data. A sub-code data switch 19 is switched synchronously with a cock changing switch 18, but when all the U-bit data are outputted as sub-code data, an output (b) from the U-bit data latch 14 is sent to a CPU 20, and when only the 'Q' bit is outputted, the output (e) is sent to a CPU 20. Consequently, the sub-code data can be easily processed, the rate of the data can be reduced and the load of the system controller can be also reduced.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62205022A JPH0778962B2 (en) | 1987-08-20 | 1987-08-20 | DAI demodulation circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62205022A JPH0778962B2 (en) | 1987-08-20 | 1987-08-20 | DAI demodulation circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6449166A true JPS6449166A (en) | 1989-02-23 |
JPH0778962B2 JPH0778962B2 (en) | 1995-08-23 |
Family
ID=16500146
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62205022A Expired - Fee Related JPH0778962B2 (en) | 1987-08-20 | 1987-08-20 | DAI demodulation circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0778962B2 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6222277A (en) * | 1985-07-22 | 1987-01-30 | Toshiba Corp | Disc reproducing device |
JPS62107473A (en) * | 1985-11-06 | 1987-05-18 | Hitachi Ltd | Sub-code information taking-in method at the time of recording of pcm tape recorder |
-
1987
- 1987-08-20 JP JP62205022A patent/JPH0778962B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6222277A (en) * | 1985-07-22 | 1987-01-30 | Toshiba Corp | Disc reproducing device |
JPS62107473A (en) * | 1985-11-06 | 1987-05-18 | Hitachi Ltd | Sub-code information taking-in method at the time of recording of pcm tape recorder |
Also Published As
Publication number | Publication date |
---|---|
JPH0778962B2 (en) | 1995-08-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |