Electronic display suitable for polar coordinate representations

Details Electronic display suitable for polar coordinate representations Electronic display suitable for polar coordinate representations

1983-10-11

1986-12-02

Brigance, Gerald L.

Communications: electrical

Land vehicle alarms or indicators

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

340783, 340784, 350331R, G09G 320

Patent

active

046268405

ABSTRACT:
A polar coordinate display of full 360.degree. arc comprises an electrically responsive medium between two electrode bearing substrates. One set of electrodes is configured as a number of concentric spirals, allowing connection at the display periphery. The other set of electrodes may be radial or counter spiral. The display may be addressed using a set of isogonal signals--for example psuedo-random binary sequence coded signals.

REFERENCES:
patent: 3848247 (1974-11-01), Sherr
patent: 4138626 (1979-02-01), Unotoro et al.
patent: 4193017 (1980-03-01), Walters
patent: 4518950 (1985-03-01), Ueda et al.
patent: 4527863 (1985-07-01), Glasper et al.
"General Theory of Matrix Addressing Liquid Crystal Displays", by Clark et al., pp. 110-111, SID 79 Digest.

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