IT1293592B1 - Frequency switching circuit for combined computer monitor and TV - has frequency adjuster adjusting base frequency through relay for direct display of TV frequency line; includes automatic control circuit to control A/D conversion frequency - Google Patents
Frequency switching circuit for combined computer monitor and TV - has frequency adjuster adjusting base frequency through relay for direct display of TV frequency line; includes automatic control circuit to control A/D conversion frequencyInfo
- Publication number
- IT1293592B1 IT1293592B1 ITMI971622A IT1293592B1 IT 1293592 B1 IT1293592 B1 IT 1293592B1 IT MI971622 A ITMI971622 A IT MI971622A IT 1293592 B1 IT1293592 B1 IT 1293592B1
- Authority
- IT
- Italy
- Prior art keywords
- frequency
- circuit
- switching circuit
- relay
- control
- Prior art date
Links
- 238000006243 chemical reaction Methods 0.000 title abstract 2
Landscapes
- Television Receiver Circuits (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
The switching circuit includes a power saving circuit and a frequency switching circuit (1031). The power saving circuit produces microprocessor action voltage to control its vertical, horizontal sync signal output when the power supply is ON. Whilst the frequency switching circuit adjusts base frequency from 31-38 KHz into 15 KHz. The switching circuit also includes an automatic control circuit (1032) for the control of the analog/digital conversion frequency, an adjustment circuit (1033) for frequency adjustment. The frequency switching is achieved through a relay ON adjusting the frequency as above for direct display of the 15 KHz line.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI971622 IT1293592B1 (en) | 1997-07-08 | 1997-07-08 | Frequency switching circuit for combined computer monitor and TV - has frequency adjuster adjusting base frequency through relay for direct display of TV frequency line; includes automatic control circuit to control A/D conversion frequency |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI971622 IT1293592B1 (en) | 1997-07-08 | 1997-07-08 | Frequency switching circuit for combined computer monitor and TV - has frequency adjuster adjusting base frequency through relay for direct display of TV frequency line; includes automatic control circuit to control A/D conversion frequency |
Publications (3)
Publication Number | Publication Date |
---|---|
ITMI971622A0 ITMI971622A0 (en) | 1997-07-08 |
ITMI971622A1 ITMI971622A1 (en) | 1999-01-08 |
IT1293592B1 true IT1293592B1 (en) | 1999-03-08 |
Family
ID=11377523
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ITMI971622 IT1293592B1 (en) | 1997-07-08 | 1997-07-08 | Frequency switching circuit for combined computer monitor and TV - has frequency adjuster adjusting base frequency through relay for direct display of TV frequency line; includes automatic control circuit to control A/D conversion frequency |
Country Status (1)
Country | Link |
---|---|
IT (1) | IT1293592B1 (en) |
-
1997
- 1997-07-08 IT ITMI971622 patent/IT1293592B1/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
ITMI971622A1 (en) | 1999-01-08 |
ITMI971622A0 (en) | 1997-07-08 |
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Legal Events
Date | Code | Title | Description |
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0001 | Granted |