Dither generating apparatus

Details Dither generating apparatus Dither generating apparatus

1994-08-26

1996-03-05

Young, Brian K.

Coded data generation or conversion

Analog to or from digital conversion

Increasing converter resolution

H03M 108

Patent

active

054971543

ABSTRACT:
A dither generating apparatus which generates a sufficiently random auto dither even for a small-level signal and even if the buffer length is short. The LSB of quantized data is extracted and is stored in a buffer memory which serves as an M-bit shift register. An index buffer storing old 2.sup.M indexes is referred to with the M bits. A look-up table, which outputs a random value, is referred to in accordance with the value in the index buffer and outputs a dither. After the reference to the look-up table, current M-bit data is input to the index buffer so that the content of the index buffer is shifted piece by piece. As the values of the outputs of the index buffer and the buffer memory are both always variable, different values are always supplied to the look-up table, which therefore generates sufficiently random dithers.

REFERENCES:
patent: 5333262 (1994-07-01), Ulichney

Affiliated with

Also associated with

Rating

Dither generating apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dither generating apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dither generating apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1415597