Device for inputting numerical or alphanumerical data, respectiv

Details Device for inputting numerical or alphanumerical data, respectiv Device for inputting numerical or alphanumerical data, respectiv

1988-07-26

1990-04-10

Moore, David K.

Communications: electrical

Land vehicle alarms or indicators

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

340709, G09G 100

Patent

active

049164406

ABSTRACT:
The tapped voltage representing the displacement and duration of a potentiometer in a joystick-type actuating element is applied to an analog to digital converter and the converted digital value is fed to preset inputs of a presettable digital counter which is set at its counting inputs by a clock generator. The overflow output of the presettable counter is connected to a load input of the presettable counter and to an up/down counter which controls a display or the like via decoding and driver circuits. A subtracting circuit is provided to subtract a preselected value from the converted digital value in order to provide a dead zone for a preselected range of the potentiometer.

REFERENCES:
patent: 4293734 (1981-10-01), Pepper, Jr.
patent: 4437008 (1984-03-01), Matsuda et al.
patent: 4550316 (1985-10-01), Whetsone et al.
patent: 4552360 (1985-11-01), Bromley et al.
patent: 4563740 (1986-01-01), Blake et al.
patent: 4581483 (1986-04-01), Ralston
patent: 4647915 (1987-03-01), Shank et al.
patent: 4685678 (1987-08-01), Frederiksen
patent: 4928944 (1988-03-01), Tamaru et al.
IBM Technical Disclosure Bulletin, vol. 23, No. 8, Jan. 1981, pp. 3831-3834, "Keyboard Scanned Capacitive Joy Stick Cursor Control", J. E. Fox.
IBM Technical Disclosure Bulletin, vol. 28, No. 8, Jan. 1986, pp. 3309-3311, "Variable Trigger--Control for a Digital Man--Machine Interface".

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