JPS5552515A - Pcm signal processor - Google Patents

Pcm signal processor

Info

Publication number
JPS5552515A
JPS5552515A JP12534778A JP12534778A JPS5552515A JP S5552515 A JPS5552515 A JP S5552515A JP 12534778 A JP12534778 A JP 12534778A JP 12534778 A JP12534778 A JP 12534778A JP S5552515 A JPS5552515 A JP S5552515A
Authority
JP
Japan
Prior art keywords
error
code
circuit
data
signal
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
JP12534778A
Other languages
Japanese (ja)
Inventor
Mitsuharu Tsuchiya
Kanji Odagi
Ryoichi Wada
Takanori Senoo
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP12534778A priority Critical patent/JPS5552515A/en
Publication of JPS5552515A publication Critical patent/JPS5552515A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To prevent the generation of an unpleasant sound based on error detection of error data, by detecting error regenerated data by using a "P" coee and "Q" code, used for error corrections, in addition to a cyclic code.
CONSTITUTION: When cyclic code CRC circuit 3 detects an error block while an input signal is sequentially written in memory method 1, an ERROR signal from memory method 1 becomes "1" and DATA is cut off by AND gate circuit 4. Then, correct data are restored by error data correction circuits 9 and 6 using a "P" code and "Q" code and outputted through AND gate circuit 7. Next, when circuit 3 fails to detect the error data, signal ERROR is "0" and error detection signals of the "P" code and "Q" code are outputted as output signal from exclusive-OR gate circuits 13 and 14; and an output from OR gate circuit 10 is "1" and the output signal of circuit 6 is outputted from AND gate circuit 7. If a drop-out generated on a transmission line is extremely long, corrections are impossible and an output from correction disability detection circuit 17 becomes "1", so that interpolation signal generating circuit 12 will output an interpolation signal.
COPYRIGHT: (C)1980,JPO&Japio
JP12534778A 1978-10-11 1978-10-11 Pcm signal processor Pending JPS5552515A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12534778A JPS5552515A (en) 1978-10-11 1978-10-11 Pcm signal processor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12534778A JPS5552515A (en) 1978-10-11 1978-10-11 Pcm signal processor

Publications (1)

Publication Number Publication Date
JPS5552515A true JPS5552515A (en) 1980-04-17

Family

ID=14907860

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12534778A Pending JPS5552515A (en) 1978-10-11 1978-10-11 Pcm signal processor

Country Status (1)

Country Link
JP (1) JPS5552515A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0048150A1 (en) * 1980-09-16 1982-03-24 Kabushiki Kaisha Toshiba A PCM signal processor
EP0048151A1 (en) * 1980-09-16 1982-03-24 Kabushiki Kaisha Toshiba A PCM signal processor
JPS57148441A (en) * 1981-03-10 1982-09-13 Victor Co Of Japan Ltd Error corrector
JPS57148440A (en) * 1981-03-10 1982-09-13 Victor Co Of Japan Ltd Measurement system for transmission error rate
JPS57157654A (en) * 1981-03-25 1982-09-29 Mitsubishi Electric Corp Error correcting circuit
JPS57171860A (en) * 1981-04-16 1982-10-22 Sony Corp Method for encoding error correction

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS558624A (en) * 1978-06-30 1980-01-22 Toshiba Corp Signal recording and reproducing system
JPS558623A (en) * 1978-06-30 1980-01-22 Toshiba Corp Signal recording and reproducing system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS558624A (en) * 1978-06-30 1980-01-22 Toshiba Corp Signal recording and reproducing system
JPS558623A (en) * 1978-06-30 1980-01-22 Toshiba Corp Signal recording and reproducing system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0048150A1 (en) * 1980-09-16 1982-03-24 Kabushiki Kaisha Toshiba A PCM signal processor
EP0048151A1 (en) * 1980-09-16 1982-03-24 Kabushiki Kaisha Toshiba A PCM signal processor
JPS57148441A (en) * 1981-03-10 1982-09-13 Victor Co Of Japan Ltd Error corrector
JPS57148440A (en) * 1981-03-10 1982-09-13 Victor Co Of Japan Ltd Measurement system for transmission error rate
JPH0452017B2 (en) * 1981-03-10 1992-08-20 Victor Company Of Japan
JPS57157654A (en) * 1981-03-25 1982-09-29 Mitsubishi Electric Corp Error correcting circuit
JPS57171860A (en) * 1981-04-16 1982-10-22 Sony Corp Method for encoding error correction
JPH0147943B2 (en) * 1981-04-16 1989-10-17 Sony Corp

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