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

1994-03-08

1995-09-05

Hoff, Marc S.

Coded data generation or conversion

Analog to or from digital conversion

Increasing converter resolution

341101, H03M 120

Patent

active

054482372

ABSTRACT:
An electronics circuit for digitizing an analog audio or like data signal to a six bit digital equivalent signal and then introducing a dither component into the digital equivalent signal. The electronics circuit includes an Erasable Programmed Read Only Memory (EPROM) which generates a six bit dither component to be added to the digital equivalent signal. A binary adder adds a dither bit to each of the six bits of the digital equivalent signal and then provides a three bit equivalent digital signal. The three bit equivalent digital signal is then written in parallel into a first storage register, while one bit of the three bit digital equivalent signal is written into a second storage register. When a fuze active signal, which is input to the present invention, is a logic zero the first register is enabled for a read operation allowing the three bit equivalent digital data to be read from the first register to a parallel to serial converter which converts the data to a serial three bit digital format. When the fuze activate signal is a logic one the second register is enabled for a read operation allowing the one bit equivalent digital data to be read from the second register to the parallel to serial converter which converts the data to a serial one bit digital format.

REFERENCES:
patent: 4857927 (1989-08-01), Takabayashi
patent: 4914439 (1990-04-01), Nakahashi et al.
patent: 5250948 (1993-10-01), Berstein et al.

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