JPS54122113A - Code signal converter - Google Patents
Code signal converterInfo
- Publication number
- JPS54122113A JPS54122113A JP2922178A JP2922178A JPS54122113A JP S54122113 A JPS54122113 A JP S54122113A JP 2922178 A JP2922178 A JP 2922178A JP 2922178 A JP2922178 A JP 2922178A JP S54122113 A JPS54122113 A JP S54122113A
- Authority
- JP
- Japan
- Prior art keywords
- pulse train
- circuit
- led
- exclusive
- generator
- 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
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Television Signal Processing For Recording (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Abstract
PURPOSE: To reduce code errors owing to the effect of low frequency range cutoff in the recording-reproducing system by providing a pulse train generator which generates pseudo-random pattern pulses having known pulse patterns.
CONSTITUTION: The pseudo-random pattern pulse train signal from an M system generator 3 is directly led to an exclusive-OR circuit 8 via switch SW1. This pulse train signal which has been inverted by being applied to an inverter, i.e., inversion gate 6, is led to an exclusive-OR circuit 9 via switch SW2. Further the pulse train signal from the generator 3 having been delayed by n-bits, e.g., 10 bits, by being applied to an n-bit shift register 4 is led to an exclusive-OR circuit 10 via switch SW3. Since in this way the pseudo-random pattern pulse train signals having no correlations at all may be obtained, such signals are deformed by Modulo 2 addition and are led together to a continuous number judgement circuit 5.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2922178A JPS54122113A (en) | 1978-03-16 | 1978-03-16 | Code signal converter |
US06/019,592 US4234898A (en) | 1978-03-15 | 1979-03-12 | Digital magnetic recording and reproducing apparatus |
GB7908785A GB2017365B (en) | 1978-03-15 | 1979-03-13 | Digital magnetic recording and reproducing apparatus |
DE2954630A DE2954630C2 (en) | 1978-03-15 | 1979-03-14 | Digital magnetic recording and reproduction |
DE19792910033 DE2910033A1 (en) | 1978-03-15 | 1979-03-14 | DIGITAL MAGNETIC RECORDING AND PLAYBACK DEVICE |
FR7906630A FR2420181B1 (en) | 1978-03-15 | 1979-03-15 | DIGITAL MAGNETIC RECORDING AND REPRODUCING APPARATUS |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2922178A JPS54122113A (en) | 1978-03-16 | 1978-03-16 | Code signal converter |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54122113A true JPS54122113A (en) | 1979-09-21 |
JPS6243271B2 JPS6243271B2 (en) | 1987-09-12 |
Family
ID=12270142
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2922178A Granted JPS54122113A (en) | 1978-03-15 | 1978-03-16 | Code signal converter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54122113A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5823310A (en) * | 1981-07-31 | 1983-02-12 | Victor Co Of Japan Ltd | Recording system for digital information signal |
JPS5837826A (en) * | 1982-07-01 | 1983-03-05 | Victor Co Of Japan Ltd | Reproducer of digital information signal |
JPS59201561A (en) * | 1983-04-29 | 1984-11-15 | Sony Corp | Transmission system of digital signal |
JPS6076061A (en) * | 1983-09-30 | 1985-04-30 | Matsushita Electric Ind Co Ltd | Optical information recording and reproducing device |
JPS60142644A (en) * | 1983-12-28 | 1985-07-27 | Mitsubishi Electric Corp | Transmission line encoding circuit |
JPS60142645A (en) * | 1983-12-28 | 1985-07-27 | Mitsubishi Electric Corp | Transmission line encoding circuit |
JPS60256984A (en) * | 1984-05-31 | 1985-12-18 | Nec Corp | Magnetic recording and reproducing device |
JPS61208382A (en) * | 1985-03-12 | 1986-09-16 | Nec Corp | Magnetic recording and reproducing device |
-
1978
- 1978-03-16 JP JP2922178A patent/JPS54122113A/en active Granted
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5823310A (en) * | 1981-07-31 | 1983-02-12 | Victor Co Of Japan Ltd | Recording system for digital information signal |
JPS5837826A (en) * | 1982-07-01 | 1983-03-05 | Victor Co Of Japan Ltd | Reproducer of digital information signal |
JPS59201561A (en) * | 1983-04-29 | 1984-11-15 | Sony Corp | Transmission system of digital signal |
JPS6076061A (en) * | 1983-09-30 | 1985-04-30 | Matsushita Electric Ind Co Ltd | Optical information recording and reproducing device |
JPS60142644A (en) * | 1983-12-28 | 1985-07-27 | Mitsubishi Electric Corp | Transmission line encoding circuit |
JPS60142645A (en) * | 1983-12-28 | 1985-07-27 | Mitsubishi Electric Corp | Transmission line encoding circuit |
JPS60256984A (en) * | 1984-05-31 | 1985-12-18 | Nec Corp | Magnetic recording and reproducing device |
JPH0574146B2 (en) * | 1984-05-31 | 1993-10-15 | Nippon Electric Co | |
JPS61208382A (en) * | 1985-03-12 | 1986-09-16 | Nec Corp | Magnetic recording and reproducing device |
Also Published As
Publication number | Publication date |
---|---|
JPS6243271B2 (en) | 1987-09-12 |
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