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 frequency

Info

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
Application number
Other languages
Italian (it)
Inventor
Wan Pao Tsai
Original Assignee
Chun Yun Electronics Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Chun Yun Electronics Co Ltd filed Critical Chun Yun Electronics Co Ltd
Priority to ITMI971622 priority Critical patent/IT1293592B1/en
Publication of ITMI971622A0 publication Critical patent/ITMI971622A0/it
Publication of ITMI971622A1 publication Critical patent/ITMI971622A1/en
Application granted granted Critical
Publication of IT1293592B1 publication Critical patent/IT1293592B1/en

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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.
ITMI971622 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 IT1293592B1 (en)

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)

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
0001 Granted