JPS5588475A - Rf modulator - Google Patents
Rf modulatorInfo
- Publication number
- JPS5588475A JPS5588475A JP16406678A JP16406678A JPS5588475A JP S5588475 A JPS5588475 A JP S5588475A JP 16406678 A JP16406678 A JP 16406678A JP 16406678 A JP16406678 A JP 16406678A JP S5588475 A JPS5588475 A JP S5588475A
- Authority
- JP
- Japan
- Prior art keywords
- modulation
- positive
- input terminal
- transistor
- video signal
- 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
Abstract
PURPOSE: To secure the common use by switching for both PAL and SECAM by breaking the balance of the balanced modulator and then obtaining the positive and negative modulation.
CONSTITUTION: The video signal is applied to input terminal 1, and the carrier is applied to input terminal 11. Diodes D2 and D3 are provided for modulation, and the output produced by giving the AM modulation to the carrier via the video signal is obtained at the anodes of D2 and D3 to be delivered to output terminal 13 via matching circuit 12. In this moment, the contact of variable resistance R5 is shifted to transistor Q1 to obtain the positive modulation signal, and then shifted toward transistor Q2 to obtain the negative modulation signal respectively.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16406678A JPS5588475A (en) | 1978-12-26 | 1978-12-26 | Rf modulator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16406678A JPS5588475A (en) | 1978-12-26 | 1978-12-26 | Rf modulator |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5588475A true JPS5588475A (en) | 1980-07-04 |
Family
ID=15786126
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16406678A Pending JPS5588475A (en) | 1978-12-26 | 1978-12-26 | Rf modulator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5588475A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6316765U (en) * | 1986-07-18 | 1988-02-03 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50152653A (en) * | 1974-05-27 | 1975-12-08 |
-
1978
- 1978-12-26 JP JP16406678A patent/JPS5588475A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50152653A (en) * | 1974-05-27 | 1975-12-08 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6316765U (en) * | 1986-07-18 | 1988-02-03 | ||
JPH0514615Y2 (en) * | 1986-07-18 | 1993-04-19 |
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