JPS5482120A - Picture quality control circuit - Google Patents
Picture quality control circuitInfo
- Publication number
- JPS5482120A JPS5482120A JP14937377A JP14937377A JPS5482120A JP S5482120 A JPS5482120 A JP S5482120A JP 14937377 A JP14937377 A JP 14937377A JP 14937377 A JP14937377 A JP 14937377A JP S5482120 A JPS5482120 A JP S5482120A
- Authority
- JP
- Japan
- Prior art keywords
- picture quality
- resistance
- quality control
- control circuit
- preshoot
- 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
- Picture Signal Circuits (AREA)
Abstract
PURPOSE: To obtain the clear-cut picture quality with no unnatural feeling by increasing the gain of the secondary differential signal with the sharpened picture quality and at the same time reducing the width of both the preshoot and overshoot.
CONSTITUTION: The picture signal supplied to the base of transistor 2 is led to output terminal from the emitter of the transistor via coil 6. Resistance 13 is connected between the emitter and the earth, and resistance 14, Dc blocking capacitor 15 and picture quality control resistance 16 are connected in series between terminal 7 and the earth. Voltage gain GV between the input terminals is shown in Eq. 1. Thus, time constant decreases when A is increased with the sharpened picture quality, and then the clear-cut picture quality is ensured with no unnatural feeling by reducing the width of both the preshoot and overshoot.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14937377A JPS5482120A (en) | 1977-12-14 | 1977-12-14 | Picture quality control circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14937377A JPS5482120A (en) | 1977-12-14 | 1977-12-14 | Picture quality control circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5482120A true JPS5482120A (en) | 1979-06-30 |
JPS631787B2 JPS631787B2 (en) | 1988-01-14 |
Family
ID=15473706
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14937377A Granted JPS5482120A (en) | 1977-12-14 | 1977-12-14 | Picture quality control circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5482120A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49131332A (en) * | 1973-04-19 | 1974-12-17 |
-
1977
- 1977-12-14 JP JP14937377A patent/JPS5482120A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49131332A (en) * | 1973-04-19 | 1974-12-17 |
Also Published As
Publication number | Publication date |
---|---|
JPS631787B2 (en) | 1988-01-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5340257A (en) | Tone control circuit | |
JPS54160150A (en) | Frequency selecting circuit | |
JPS5575316A (en) | Control circuit for frequency characteristic | |
JPS57204611A (en) | Voltage follower circuit | |
JPS5672510A (en) | Muting circuit | |
JPS5483746A (en) | Amplifier circuit | |
JPS5482120A (en) | Picture quality control circuit | |
US4275417A (en) | Aperture correction signal processing circuit | |
JPS5330852A (en) | Differential amplifier circuit | |
JPS56115012A (en) | Feedback circuit for integrated circuit | |
EP0186401A3 (en) | Controllable effective resistance circuits | |
JPS5543643A (en) | Constant voltage circuit | |
JPS547824A (en) | Video amplifying circuit | |
JPS5591270A (en) | Video detection circuit | |
JPS5494228A (en) | Cut off adjustimg circuit for color receiving tube | |
JPS5797227A (en) | Electronic switching amplifying circuit | |
JPS5530269A (en) | Cathode current detector | |
JPS5398759A (en) | Gain control unit | |
JPS56136007A (en) | Phase inverting circuit | |
JPS52107783A (en) | Complementary integration circuit | |
JPS55131822A (en) | Constant-voltage circuit | |
JPS57107619A (en) | Low-frequency amplifying circuit | |
JPS52123155A (en) | Voltage control oscillation circuit | |
JPS5761319A (en) | Electronic variable resistor | |
JPS5364452A (en) | Variable gain control device |