JPH01164537U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a schematic circuit diagram of a key input identification device according to an embodiment of the present invention, FIG. 2 is a sectional view showing the structure of keys and contacts in the embodiment device shown in FIG. 1, and FIG.
The figure is a contact layout diagram showing a modification of the embodiment device shown in FIG. 1, FIG. 4 is a contact layout diagram showing a modification of the embodiment device shown in FIG. 1, and FIG. 5 is another embodiment of the present invention. Schematic circuit diagram of example key input identification device, No. 6
The figure is a schematic circuit diagram of an example of a conventional key input identification device. [Explanation of symbols], 1, 11...Key input identification device, 2, 12...Microcomputer, _S1 - _S3 ...Strobe line, R1 _{-R3 ...} Return line, _K11-
K66 ...key, _C11a to _C66b ...key contact.

Claims (1)

[Claims for Utility Model Registration] Keys are arranged corresponding to predetermined intersections of matrices of two or more strobe lines and two or more return lines, and strobe signals are output at different timings to each strobe line. In a key input identification device that reads return signals from each return line at each timing and identifies the input key, two or more intersection points are made to correspond to one key, and the combination of the intersection points to be made to correspond is changed. A key input identification device characterized in that each key is identified.