Masked write on an array of drive bits

• US 7,924,274 B2
• Filed: 05/12/2006
• Issued: 04/12/2011
• Est. Priority Date: 05/20/2003
• Status: Active Grant

• Current Assignee: Syndiant Incorporated
• Original Assignee: Syndiant Incorporated
• Inventors: Guttag, Karl M.
• Primary Examiner(s): Dharia; Prabodh M
• Application Number:
  US11/383,056
• Publication Number:
  US 20060274002A1
• Time in Patent Office: 1,796 Days
• Field of Search: 345/57, 345 84- 90, 345/100, 345/173, 345/581, 345/582, 345/587, 345/619, 345/691, 345/204, 345/210, 359/292, 359/290, 219/121.6, 365/158, 365/189.02, 365/210, 365/49.17, 348/771
• US Class Current: 345/204
• 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. A device comprising:

a mirror RAM array of mirror RAM storage bits for a spatial light modulator, said mirror RAM storage bits being arranged in mirror RAM columns;

a first driver and a second driver; and

one or more bit lines for each of said mirror RAM columns, wherein said one or more bit lines support said first and said second driver on opposite sides of said array, wherein said mirror RAM storage bits are for a spatial light modulator and wherein said first driver and said second driver each include means for masked writing to said mirror RAM storage bits.

2. The device of claim 1, further comprising a first processing means and a second processing means for writing to said mirror RAM storage bits, wherein said first processing means and said second processing means are located on opposite sides of said mirror RAM array and wherein either said first processing means or said second processing means is capable of writing to said mirror RAM storage bits on either side of said mirror RAM array.

3. The device of claim 1, further comprising ERAM storage bits interposed between said mirror RAM storage bits of said mirror RAM array.

4. The device of claim 3, wherein said ERAM storage bits are arranged in ERAM columns, wherein said ERAM columns form two separate ERAM memory arrays, and wherein each of said ERAM memory arrays includes inputs and outputs on opposite sides thereof.