Mapping Pixel Values

• US 20070120787A1
• Filed: 05/12/2006
• Published: 05/31/2007
• Est. Priority Date: 05/20/2003
• Status: Active Grant

• Current Assignee: Syndiant Incorporated
• Original Assignee: Kagutech Ltd.
• Inventors: Guttag, Karl
• Granted Patent: US 8,120,597 B2
• Time in Patent Office: Days
• US Class Current: 345/84
• CPC Class Codes: G06F 3/147 using display panels
• CPC Class Codes: G09G 2300/0809 Several active elements per pixel in active matrix panels
• CPC Class Codes: G09G 2300/0857 Static memory circuit, e.g. flip-flop
• CPC Class Codes: G09G 2310/0221 with use of split matrices G09G3/3644 and G09G3/3666 take precedence
• CPC Class Codes: G09G 2310/0275 Details of drivers for data electrodes, other than drivers for liquid crystal, plasma or OLED displays, not related to handling digital grey scale data or to communication of data to the pixels by means of a current
• CPC Class Codes: G09G 3/2014 by modulation of the duration of a single pulse during which the logic level remains constant
• CPC Class Codes: G09G 3/2022 using sub-frames
• CPC Class Codes: G09G 3/34 by control of light from an independent source
• CPC Class Codes: G09G 3/346 based on modulation of the reflection angle, e.g. micromirrors micromirrors devices per se G02B26/0833
• CPC Class Codes: G09G 5/10 Intensity circuits

Abstract

The present invention provides a various methods, systems and devices for controlling light modulating elements and/or spatial light modulators. In some embodiments of the present invention, a recursive feedback method is used to control light modulating elements and/or spatial light modulators.

Claims

1-143. -143. (canceled)

144. A device comprising:

a spatial light modulator comprising an array of master-slave bit pairs, wherein for each master-slave bit pair a master bit includes means for selectively driving a corresponding slave bit, and wherein both said master bit and said corresponding slave bit are capable of being randomly accessed.

145. The device of claim 144, wherein said slave bit is a bit of a MRAM array.

146. The device of claim 144, wherein said MRAM array includes means for supporting a masked write operation.

147. The device of claim 144, wherein said spatial light modulator further comprises means for initiating a transfer from each master to a respective slave bit at substantially the same time.

148. A method comprising:

providing an m bit input pixel value; and

mapping said m bit input pixel value into one or more non-binary weighted pulse widths using time based mapping to thereby control a light modulating element of a spatial light modulator.

149. The method of claim 148, wherein said single pulse is controlled by a single count process.

150. The method of claim 148, wherein said single pulse is controlled by a dual count process.

151. The method of claim 148, said single pulse performs gamma correction of light output of said spatial light modulator.

152. A system comprising:

means for providing an m bit input pixel value; and

means for mapping said m bit input pixel value into a non-binary weighted single pulse using time based mapping to thereby control a light modulating element of a spatial light modulator.

153. A device comprising:

a backplane controller including means for sequencing a series of instructions, wherein said instructions control memory accesses to data that is used to control one or more pulse widths on a spatial light modulator.

154. The device of claim 153, wherein device further includes memory in which said instructions are stored.

155. The device of claim 154, wherein said memory is RAM.

156. The device of claim 153, wherein said instructions control which of said data is accessed.

157. The device of claim 153, wherein said instructions control which drive bits of said spatial light modulator are enabled to be modified.

158-168. -168. (canceled)