Phase calculation circuitry in digital television receiver

Details Phase calculation circuitry in digital television receiver Phase calculation circuitry in digital television receiver

1984-10-29

1987-12-01

Harkcom, Gary V.

Boots, shoes, and leggings

364715, 358 28, G06F 7347, G06F 7556, H04N 964

Patent

active

047108924

ABSTRACT:
An angle .alpha. from 0.degree. to 45.degree. is determined from an equation .alpha..degree.=LK.iota.(tan .alpha.).sup..iota., where .iota. is an index varying from 0 to n. The value of tan .alpha. is arrived at by dividing the smaller of the I,Q magnitude values by the larger of the two magnitude values. The angle .alpha. from 0.degree. to 45.degree. is transposed to the corresponding phase angle .theta. of the vector sum C of the orthogonal I,Q signals over the full range of values from 0.degree. to 360.degree..

REFERENCES:
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patent: 4528586 (1985-07-01), Lewis, Jr. et al.
patent: 4544944 (1985-10-01), Chin
patent: 4558351 (1985-12-01), Fling et al.
patent: 4562460 (1985-12-01), Harwood

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