The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 21, 2005
Filed:
Oct. 23, 2001
Chi-ming Su, Hsien, TW;
Chi-Ming Su, Hsien, TW;
Acer Communications and Multimedia Inc., Taoyaun, TW;
Abstract
The present invention provides a device for signal transfer, which outputs a treatment signal relating to a vertical-horizontal composite sync signal of a monitor and an integrated signal of the vertical-horizontal composite sync signal. There is a plurality of logic circuits in the device of the present invention. The first logic circuit is provided for receiving the vertical-horizontal composite sync signal and the integrated signal, and outputs a high level signal when the voltage level of the vertical-horizontal composite sync signal transforms from the high level to the low level while the voltage level of the integrated signal is in the low level. The second logic circuit is connected to the first logic circuit and receives the vertical-horizontal composite sync signal and the signal outputted from the first logic circuit. The second logic circuit outputs a low level signal when the voltage level of the vertical-horizontal composite sync signal is transformed from the low level to the high level while the voltage level of the signal outputted from the first logic circuit is at the high level. The third logic circuit receives the vertical-horizontal composite sync signal and the signal outputted from the first logic circuit. The third logic circuit outputs a low level signal when the voltage level of the vertical-horizontal composite sync signal and the signal outputted from the first logic circuit is at the low level. The fourth logic circuit receives the signal outputted from the second logic circuit and the third logic circuit. The fourth logic circuit outputs a high level signal when the voltage level of the signals outputted from the second logic circuit and the third logic circuit are at the high level.