On/off switch arrangements for a touch control bar graph device

Details On/off switch arrangements for a touch control bar graph device On/off switch arrangements for a touch control bar graph device

1978-05-25

1980-05-20

Scott, James R.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340753, 340771, 340803, G08B 536

Patent

active

042042046

ABSTRACT:
A safe and convenient ON/OFF switch arrangement for a touch control bar graph device of the type which includes an array of light transmitting touch-sensitive areas superimposed over a bar graph display. In order to require two operations to enable the touch control bar graph device, the present arrangement has an ON touch-sensitive area positioned adjacent to but spaced from the touch control bar graph device. A de-energizing touch-sensitive area is positioned in the space between the ON touch-sensitive area and the touch control bar graph device. Further, a circuit means is responsive to the ON and the de-energizing touch-sensitive areas for enabling operation of the touch control bar graph device in response to the touching of the ON touch-sensitive area, and for disabling touch control bar graph operation in response to the touching of the de-energizing touch-sensitive area. As a result, if a user attempts to enable operation of the touch control bar graph device by moving a finger directly between the On touch sensitive area and the touch control bar graph device, the user's finger at least momentarily touches the de-energizing touch-sensitive area to disable the touch control bar graph device.

REFERENCES:
patent: 3492440 (1970-01-01), Cerbone et al.
patent: 3886539 (1975-05-01), Gould Jr.
patent: 4121204 (1978-10-01), Welch et al.

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