JPS554747A - Video signal recording circuit - Google Patents
Video signal recording circuitInfo
- Publication number
- JPS554747A JPS554747A JP7741378A JP7741378A JPS554747A JP S554747 A JPS554747 A JP S554747A JP 7741378 A JP7741378 A JP 7741378A JP 7741378 A JP7741378 A JP 7741378A JP S554747 A JPS554747 A JP S554747A
- Authority
- JP
- Japan
- Prior art keywords
- pulses
- circuit
- signals
- comparator
- integration
- 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
Links
- 230000010354 integration Effects 0.000 abstract 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical group C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 abstract 2
Landscapes
- Television Signal Processing For Recording (AREA)
Abstract
PURPOSE: To reduce the number of external terminals to facilitate the integration of a circuit by performing clamp and standard pulse addition to a pedestal part on a basis of pulses different in polarity obtained by band-limiting bynchronizing signals of video signals.
CONSTITUTION: Sychronizing signals applied to the terminal 10 have the band limited by the integrating circuit 4 and the differentiating circuit 8 to generate positive and negative pulses, These pulses are applied to the comparators 15 and 14, where respective thresholds are set, to generate pulses different in timing. When pulses outputted from the comparator 15 are applied to the clamp circuits 2 and 7 as gate pulses, video signals are clamped; and when the output pulse of the comparator 15 is applied to the adder 13, a reference signal is added to the pedestal part. Consequently, two kinds of required pulse can be formed by using one common external terminal. As a result, the number of external terminals is reduced, and the integration of a recording circuit becomes easy.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7741378A JPS554747A (en) | 1978-06-28 | 1978-06-28 | Video signal recording circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7741378A JPS554747A (en) | 1978-06-28 | 1978-06-28 | Video signal recording circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS554747A true JPS554747A (en) | 1980-01-14 |
Family
ID=13633237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7741378A Pending JPS554747A (en) | 1978-06-28 | 1978-06-28 | Video signal recording circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS554747A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58111587A (en) * | 1981-12-25 | 1983-07-02 | Hitachi Ltd | Automatic gain control circuit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5146226B2 (en) * | 1971-12-10 | 1976-12-08 | ||
| JPS5218022U (en) * | 1975-07-28 | 1977-02-08 | ||
| JPS5235520A (en) * | 1975-09-12 | 1977-03-18 | Matsushita Electric Ind Co Ltd | Pulse generator circuit |
-
1978
- 1978-06-28 JP JP7741378A patent/JPS554747A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5146226B2 (en) * | 1971-12-10 | 1976-12-08 | ||
| JPS5218022U (en) * | 1975-07-28 | 1977-02-08 | ||
| JPS5235520A (en) * | 1975-09-12 | 1977-03-18 | Matsushita Electric Ind Co Ltd | Pulse generator circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58111587A (en) * | 1981-12-25 | 1983-07-02 | Hitachi Ltd | Automatic gain control circuit |
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