Keyboard with multiple input/output function
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Apr 1, 2003
Grant Date -
N/A
app pub date -
Mar 6, 2000
filing date -
Mar 6, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A computer keyboard has multiple input/output function and is connected to a computer (or a set-top box). The keyboard comprises a keyboard main body, and a handset slot. The keyboard main body has a control circuit, a scan matrix circuit connected to the control circuit; a first switch and a second switch. The control circuit is connected to the normally-close terminals of the first switch and the second switch. The communication interface (such as USB or RS-232) of the keyboard is connected to the normally-open terminals of the first switch and the second switch. The common terminal of the first switch is connected to the handset slot and the internal circuit of the handset. The common terminal of the second switch is connected to the internal circuit of the computer. The keyboard main body has function key set connected to the control circuit when being pressed. The function key set controls the first switch and the second switch to switch between the normally-open and normally-close state, whereby the keyboard can be used as input means of the handset and the handset can exchange data with the computer through the communication interface.
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