Input device for a display system using phase-encoded signals

Details Input device for a display system using phase-encoded signals Input device for a display system using phase-encoded signals

1987-02-19

1988-05-17

Caldwell, Sr., John W.

Communications: electrical

Land vehicle alarms or indicators

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

340712, 340706, 455603, G09G 100

Patent

active

047454024

ABSTRACT:
The invention relates to a display system using a remote control handunit having "pointing function" capability for moving a cursor displayed on a display screen by changing the angular position of the remote control handunit. Specifically, the individual transmitting transducers of the remote control handunit are driven with signals having a predetermined phase relationship relative to each other such that the resultant phase received by the receiver is indicative of transmitter angular position.

REFERENCES:
patent: 3423528 (1969-01-01), Bradshaw et al.
patent: 3767858 (1973-10-01), Rodgers
patent: 4209255 (1980-06-01), Heynau et al.
patent: 4313227 (1982-01-01), Eder
patent: 4565999 (1986-01-01), King et al.
patent: 4626892 (1986-12-01), Nortrup et al.
patent: 4641205 (1987-02-01), Beyers, Jr.

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