JPS54108524A - Color synchronizer of beam index type picture receiver - Google Patents
Color synchronizer of beam index type picture receiverInfo
- Publication number
- JPS54108524A JPS54108524A JP1560478A JP1560478A JPS54108524A JP S54108524 A JPS54108524 A JP S54108524A JP 1560478 A JP1560478 A JP 1560478A JP 1560478 A JP1560478 A JP 1560478A JP S54108524 A JPS54108524 A JP S54108524A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- index
- input signal
- pulse
- reset pulse
- 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
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Abstract
PURPOSE: To attain stable color synchronization with invariably-definite gate operation, by counting an index signal before a process and by starting a divider circuit with a reset pulse obtained through the counting.
CONSTITUTION: Sub-counter circuit 52 starts by reset pulse (G) from multivibrator 51 to count an index signal, the output of amplitude limiter circuit 46, thereby generating reset pulse (G") which allows 1/3 divider circuit 48 to start. Even if the timing of pulse (G") varies with the phase of the input signal of circuit 52, the phase of input signal 4(fi)D[fi; index frequency] of circuit 48 since depending upon the input signal of index-signal processing circuit 47 varies in the same direction, so that the start will not become out of timing. The accuracy of pulse (G) allowing circuit 52 to start is Tb'=1/fi=140m sec., which provides room four times as much as cnoventional one, so that stable synchronization can be attained.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53015604A JPS588195B2 (en) | 1978-02-14 | 1978-02-14 | Color synchronization device for beam index type receiver |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53015604A JPS588195B2 (en) | 1978-02-14 | 1978-02-14 | Color synchronization device for beam index type receiver |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54108524A true JPS54108524A (en) | 1979-08-25 |
JPS588195B2 JPS588195B2 (en) | 1983-02-15 |
Family
ID=11893320
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53015604A Expired JPS588195B2 (en) | 1978-02-14 | 1978-02-14 | Color synchronization device for beam index type receiver |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS588195B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5640379A (en) * | 1979-09-12 | 1981-04-16 | Sony Corp | Beam index type color television receiver |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50147239A (en) * | 1974-05-15 | 1975-11-26 | ||
JPS5168131A (en) * | 1974-12-09 | 1976-06-12 | Matsushita Electric Ind Co Ltd | INDETSUKUSUSHINGOSHORIKAIRO |
-
1978
- 1978-02-14 JP JP53015604A patent/JPS588195B2/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50147239A (en) * | 1974-05-15 | 1975-11-26 | ||
JPS5168131A (en) * | 1974-12-09 | 1976-06-12 | Matsushita Electric Ind Co Ltd | INDETSUKUSUSHINGOSHORIKAIRO |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5640379A (en) * | 1979-09-12 | 1981-04-16 | Sony Corp | Beam index type color television receiver |
Also Published As
Publication number | Publication date |
---|---|
JPS588195B2 (en) | 1983-02-15 |
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