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:
Jul. 08, 2008
Filed:
Dec. 21, 2004
Ya-tsung Feng, Kaohsiung, TW;
Ming-hung Chueh, Kaohsiung, TW;
Yu-shan Liu, Kaohsiung, TW;
Yao-jen Chang, Kaohsiung, TW;
Ya-Tsung Feng, Kaohsiung, TW;
Ming-Hung Chueh, Kaohsiung, TW;
Yu-Shan Liu, Kaohsiung, TW;
Yao-Jen Chang, Kaohsiung, TW;
UIS Abler Electronics Co., Ltd., Hsintien, Taipei Hsien, TW;
Abstract
A switching device for RS-232 serial port and USB serial port is adapted to simultaneously provide a RS-232 serial port and a USB serial port for a micro-processor with a single USART. The switching device can automatically switch to select either of the RS-232 serial port or the USB serial port as a main interface for communicating with other external computer facilities and related peripheries. When one of the serial ports is selected as the main communication interface to communicate with one of external computers, the other one serial port thereof still can transmit signals from the micro-processor to another computer through its transmitting data pin (TXD).