JPS5654612A - Muting control circuit for reproducer of pcm signal - Google Patents
Muting control circuit for reproducer of pcm signalInfo
- Publication number
- JPS5654612A JPS5654612A JP12868179A JP12868179A JPS5654612A JP S5654612 A JPS5654612 A JP S5654612A JP 12868179 A JP12868179 A JP 12868179A JP 12868179 A JP12868179 A JP 12868179A JP S5654612 A JPS5654612 A JP S5654612A
- Authority
- JP
- Japan
- Prior art keywords
- muting
- reproduction
- signal
- becomes steady
- writing
- 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)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
Abstract
PURPOSE: To perform the optimum muting, by producing the muting signal for the period during which the PCM reproduction system becomes steady and when the difference between the writing and reading addresses of the reproduction buffer memory is larger than the prescribed value and in case when the prescribed number of the horizontal synchronous pulses is dropped out continuously.
CONSTITUTION: The monostable multivibrator 1, when triggered by the vertical synchronous signal, produces the pulse having the duration corresponding to the period during which the reproduction system becomes steady and then sets the JK- type FF3. Thus the FF3 produces the low-level output Q' in the form of the muting signal, and at the same time inhibits the trigger input to the mono-multi 1 by the output Q. Thus the muting is continued until the reproduction becomes steady. On the other hand, the FF3 is reset by the high-level output Q' of the retrigger enable mono-multi 2 when the horizontal synchronous signals are dropped out in more than the prescribed number. And thus the muting signal is produced according to the abnormal stoppage of the reproduction, recording and others. In the same way, the muting signal is produced when the difference between the writing and reading addresses to the reproduction buffer memory 8 becomes larger than the prescribed value. As a result, the optimum muting is performed when necessary.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12868179A JPS5654612A (en) | 1979-10-05 | 1979-10-05 | Muting control circuit for reproducer of pcm signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12868179A JPS5654612A (en) | 1979-10-05 | 1979-10-05 | Muting control circuit for reproducer of pcm signal |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5654612A true JPS5654612A (en) | 1981-05-14 |
JPS631665B2 JPS631665B2 (en) | 1988-01-13 |
Family
ID=14990797
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12868179A Granted JPS5654612A (en) | 1979-10-05 | 1979-10-05 | Muting control circuit for reproducer of pcm signal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5654612A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59152509A (en) * | 1983-02-18 | 1984-08-31 | Sanyo Electric Co Ltd | Muting device |
JPS6013359A (en) * | 1983-07-01 | 1985-01-23 | Matsushita Electric Ind Co Ltd | Pulse code modulation recording and reproducing device |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01137772U (en) * | 1988-03-07 | 1989-09-20 | ||
JPH0291671U (en) * | 1988-12-27 | 1990-07-20 | ||
JPH06210219A (en) * | 1993-01-20 | 1994-08-02 | Kogashiwa Takeshi | Masking film for coating |
-
1979
- 1979-10-05 JP JP12868179A patent/JPS5654612A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59152509A (en) * | 1983-02-18 | 1984-08-31 | Sanyo Electric Co Ltd | Muting device |
JPS6013359A (en) * | 1983-07-01 | 1985-01-23 | Matsushita Electric Ind Co Ltd | Pulse code modulation recording and reproducing device |
JPH0520826B2 (en) * | 1983-07-01 | 1993-03-22 | Matsushita Electric Ind Co Ltd |
Also Published As
Publication number | Publication date |
---|---|
JPS631665B2 (en) | 1988-01-13 |
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