JPS6449166A - Dai demodulating circuit - Google Patents

Dai demodulating circuit

Info

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
Application number
JP20502287A
Other languages
Japanese (ja)
Other versions
JPH0778962B2 (en
Inventor
Ichiro Miyake
Shunichiro Sakamoto
Hiroo Okamoto
Yuji Hatanaka
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
Pioneer Corp
Original Assignee
Hitachi Ltd
Pioneer Electronic Corp
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, Pioneer Electronic Corp filed Critical Hitachi Ltd
Priority to JP62205022A priority Critical patent/JPH0778962B2/en
Publication of JPS6449166A publication Critical patent/JPS6449166A/en
Publication of JPH0778962B2 publication Critical patent/JPH0778962B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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.
JP62205022A 1987-08-20 1987-08-20 DAI demodulation circuit Expired - Fee Related JPH0778962B2 (en)

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)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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