JPS642487A - Color television receiver - Google Patents
Color television receiverInfo
- Publication number
- JPS642487A JPS642487A JP15845187A JP15845187A JPS642487A JP S642487 A JPS642487 A JP S642487A JP 15845187 A JP15845187 A JP 15845187A JP 15845187 A JP15845187 A JP 15845187A JP S642487 A JPS642487 A JP S642487A
- Authority
- JP
- Japan
- Prior art keywords
- chrominance
- secam
- color television
- diode
- circuit
- 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
- Color Television Systems (AREA)
- Processing Of Color Television Signals (AREA)
Abstract
PURPOSE: To trap a SECAM chrominance signal which has two kinds of chrominance subcarrier frequencies effectively over the entire chrominance signal band by using a cascaded circuit of a trap circuit for the PAL system and a trap circuit of frequency lower than the center frequency of a bell filter.
CONSTITUTION: When a SECAM color television signal is selected and received, a voltage V3 which is high enough to a diode D3 through a resistance R3 and also turns on a diode D3 through a diode D4 and a resistance R2 is applied to an input terminal 11 and input terminals 9 and 10 become open. The chrominance signal of the SECAM color television signal outputted from a delay circuit (DL) is trapped as center frequencies of 4.142MHz determined by L3 and C3 and 4.43MHz determined by L2 and C2 and flows to the ground. Consequently, the SECAM chrominance signal which has two kinds of chrominance subcarriers is attenuated effectively.
COPYRIGHT: (C)1989,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62158451A JPH0824370B2 (en) | 1987-06-25 | 1987-06-25 | Color television receiver |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62158451A JPH0824370B2 (en) | 1987-06-25 | 1987-06-25 | Color television receiver |
Publications (3)
Publication Number | Publication Date |
---|---|
JPH012487A JPH012487A (en) | 1989-01-06 |
JPS642487A true JPS642487A (en) | 1989-01-06 |
JPH0824370B2 JPH0824370B2 (en) | 1996-03-06 |
Family
ID=15672040
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62158451A Expired - Lifetime JPH0824370B2 (en) | 1987-06-25 | 1987-06-25 | Color television receiver |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0824370B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0562415A1 (en) * | 1992-03-25 | 1993-09-29 | THOMSON multimedia | Circuit for switching between PAL and SECAM mode in a television receiver |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57185276U (en) * | 1981-05-19 | 1982-11-25 | ||
JPS5986986A (en) * | 1982-11-11 | 1984-05-19 | Sony Corp | Multi-system television set |
-
1987
- 1987-06-25 JP JP62158451A patent/JPH0824370B2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57185276U (en) * | 1981-05-19 | 1982-11-25 | ||
JPS5986986A (en) * | 1982-11-11 | 1984-05-19 | Sony Corp | Multi-system television set |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0562415A1 (en) * | 1992-03-25 | 1993-09-29 | THOMSON multimedia | Circuit for switching between PAL and SECAM mode in a television receiver |
Also Published As
Publication number | Publication date |
---|---|
JPH0824370B2 (en) | 1996-03-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term | ||
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080306 Year of fee payment: 12 |