JPS5494002A - Signal recorder and reproducer - Google Patents
Signal recorder and reproducerInfo
- Publication number
- JPS5494002A JPS5494002A JP65078A JP65078A JPS5494002A JP S5494002 A JPS5494002 A JP S5494002A JP 65078 A JP65078 A JP 65078A JP 65078 A JP65078 A JP 65078A JP S5494002 A JPS5494002 A JP S5494002A
- Authority
- JP
- Japan
- Prior art keywords
- signals
- waves
- audio signals
- time
- modulation width
- 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
- Optical Recording Or Reproduction (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
- Time-Division Multiplex Systems (AREA)
Abstract
PURPOSE: To facilitate discrimination of left and right channels and to reduce the infulences of spike noises and the deterioration in quality by subjecting the audio signals of the left and right channels to PWM so that they may be multiplexed in a time shearing manner.
CONSTITUTION: The left and right audio signals are impressed upon terminals L and R, respectively, and fed through LPFs 1 and 2 to summing circuits 6 and 7 so that the triangular waves b and c led out of the sampling pulses a of generator 3 may be overlapped thereon. The signals thus processed are sliced by slicing circuits 8 and 9 to generate PWD waves f and g. At this time, the minimum modulation width of the signals f is larger than the maximum modulation width of the signals g. These signals f and g are subjected to multiplexing operation in a time shearing manner with the pulses a so that they are generated as recording signals. On the other hand, by extracting the different PWM waves at a reproducing system, it is possible to separately take out the left and right audio signals even when the pulsating noises are mixed.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP65078A JPS608543B2 (en) | 1978-01-06 | 1978-01-06 | Signal recording device and playback device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP65078A JPS608543B2 (en) | 1978-01-06 | 1978-01-06 | Signal recording device and playback device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5494002A true JPS5494002A (en) | 1979-07-25 |
JPS608543B2 JPS608543B2 (en) | 1985-03-04 |
Family
ID=11479579
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP65078A Expired JPS608543B2 (en) | 1978-01-06 | 1978-01-06 | Signal recording device and playback device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS608543B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008276869A (en) * | 2007-04-27 | 2008-11-13 | Victor Co Of Japan Ltd | Optical pickup drive method and optical disk device |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0324889Y2 (en) * | 1986-06-09 | 1991-05-30 |
-
1978
- 1978-01-06 JP JP65078A patent/JPS608543B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008276869A (en) * | 2007-04-27 | 2008-11-13 | Victor Co Of Japan Ltd | Optical pickup drive method and optical disk device |
Also Published As
Publication number | Publication date |
---|---|
JPS608543B2 (en) | 1985-03-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5748881A (en) | Video format signal recording and playback system | |
JPS644976A (en) | Data recorder | |
JPS57150285A (en) | Magnetic recording system of sound signal and recording and reproducing system | |
JPS57184381A (en) | Video signal processor | |
JPS5350919A (en) | Video signal recorder unit | |
JPS5494002A (en) | Signal recorder and reproducer | |
JPS5270802A (en) | Aural signal recording and reproducing system | |
EP0166806A3 (en) | A cosine signal corrector | |
JPS5332705A (en) | Tape recorder | |
JPS5724004A (en) | Bias control device | |
JPS51143310A (en) | Information regenerating system | |
JPS52118593A (en) | Data collector of transmission line | |
JPS5552503A (en) | Signal multiprocessing system | |
JPS5288010A (en) | Recording level setting apparatus for fm signal | |
JPS526502A (en) | Automatic control system for angulas modulated wave level | |
JPS5552567A (en) | Automatic music selector of tape recorder | |
JPS5417710A (en) | Pusle recording system | |
JPS53116126A (en) | Magnetic recording-reproducing system | |
JPS53113516A (en) | Recording/reproducing system | |
EP0387804A3 (en) | Recording of frequency-multiplex signal on recording medium | |
JPS5644171A (en) | Pcm recording and reproducing device | |
JPS5393801A (en) | Removing system for interference distortion generated in demodulated signalby interference of fm wave signal in recording/reproducing system for multichannel disk records. | |
JPS55120274A (en) | Video recording and reproducing system | |
JPS57189303A (en) | Recording and reproducing device | |
JPS52156603A (en) | Noise reducing system for fm multiplex signal recording and reproducing system |