Patent Number: 6,167,085

Title: Image data compression

Abstract: Image data compression apparatus in which data is encoded using a variable degree of quantization selected for areas of an image so that the quantity of encoded data for each area does not exceed a predetermined maximum quantity of data comprises two or more trial encoders operable in parallel to trial encode image data using respective predetermined trial degrees of quantization; a selector for selecting one of the predetermined trial degrees of quantization in response to the quantities of data produced during the trial quantizations; and one or more further trial encoders operable to trial encode image data using degrees of quantization derived from the degree of quantization selected by the selector.

Inventors: Saunders; Nicholas Ian (Basingstoke, GB), Gillard; Clive Henry (Basingstoke, GB)

Assignee: Sony Corporation

International Classification: H04B 1/66 (20060101); H04N 7/30 (20060101); G06T 9/00 (20060101); H04N 7/26 (20060101); H04B 001/66 ()

Expiration Date: 12/26/2013