Digital circuit for the introduction of dither into an analog si

Details Digital circuit for the introduction of dither into an analog si Digital circuit for the introduction of dither into an analog si

1994-04-25

1996-04-23

Young, Brian K.

Coded data generation or conversion

Analog to or from digital conversion

Increasing converter resolution

341155, 341139, H03M 118

Patent

active

055107907

ABSTRACT:
An electronics circuit for accurately digitizing an analog audio, video or ike data signal into a fourteen bit digital equivalent signal/words having thirteen data bits and a sign bit and then introducing a dither component into the digital equivalent signal. A Read Only Memory which generates an eight bit dither component to be added to a selected eight bits of each fourteen bit digital equivalent sample. The combination of an automatic gain control circuit and a data selector circuit is provided which selects eight of the thirteen data bits of each sample to supply to a binary adder which adds the dither component to each sample. The eight selected bits of each thirteen bit data sample provide optimum video, audio or like information for the sample. A binary adder is also provided to add the dither component to each bit sample before providing the resultant signal to a missile's telemetry system.

REFERENCES:
patent: 5187481 (1993-02-01), Hiller
patent: 5189418 (1993-02-01), Bartz et al.

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