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Samsung patents image processor that saves memory using math tricks

Samsung describes an image processing device that uses three separate memory blocks to store color adjustment data. Instead of storing full data for every processor, it stores a mathematical difference (XOR operation) between two data sets. When a processor needs the data, the device calculates the final values on the fly using this stored difference.

Why it mattersThis design could help reduce the amount of memory needed in display chips, potentially making them smaller or cheaper to produce.

In the filing’s own words

An example image processing device includes a first memory comprising a first look-up table, a second memory comprising a second look-up table, and a third memory comprising a third look-up table, a first processor and a second processor that are configured to output predetermined color values based on input color values using at least one of the first to third look-up tables, and a control logic circuit configured to control at least a portion of the first memory, the second memory, and the third memory. The control logic circuit is configured to, in response to receiving a read request for the first memory from each of the first and second processors, transmit data in the first look-up table to the first processor and to transmit data, obtained by performing an XOR operation on data in the third look-up table and data in the second look-up table, to the second processor.

What exactly they claim (claim 1)

1. An image processing device comprising: a first memory comprising a first look-up table, a second memory comprising a second look-up table, and a third memory comprising a third look-up table, the third look-up table including data obtained based on performing an exclusive OR (XOR) operation on a piece of data in the first look-up table and a piece of data in the second look-up table; a first processor and a second processor, the first processor and the second processor configured to output a plurality of predetermined color values based on a plurality of input color values using at least one of the first look-up table, the second look-up table, and the third look-up table; and a control logic circuit configured to control at least a portion of the first memory, the second memory, and the third memory, wherein based on receiving a read request for the first memory from each processor of the first processor and the second processor, the control logic circuit is configured to: transmit data in the first look-up table to the first processor; and transmit, to the second processor, data that is obtained based on performing an XOR operation on data in the third look-up table and data in the second look-up table.

Facts

Company
Samsung (SAMSUNG ELECTRONICS CO., LTD.)
Official title
Image processing device and image processing system using look-up table with exclusive or operation applied
Patent number
US12738192B2
Application number
18786208
Filed
Jul 26, 2024
Granted
Sep 15, 2026
Inventors
1
Claims
20

Classified under

G09G 3/2088 Physics & computingG06F 1/03 Physics & computingH03K 19/21 Electricity & electronics
Read the full filing (official PDF) ↗ Open in the Patent Tracker

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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.