Silicon Integrated Systems Corporation

Young Lighting Technology Corporation

Chien-Chung Hsiao

Wei-Jen Chou

Chiao-Chih Yang

Shih-Yuan Yu

Chih-Hua Lin

Bor-Jyh Pan

Yu-Chin Lan

Chih-Chin Chen

Tsung-Feng Lee

Li-Shu Lu

A driving apparatus and a driving method of a backlight module are provided. The backlight module includes multiple LEDs. The driving apparatus includes at least one thermal sensor, an optical sensor, and a processor. The thermal sensor is for detecting a working temperature of the LEDs. The optical sensor is for detecting brightness and color of the backlight module after a calibration function is enabled, to obtain difference values of the detected brightness and color with respect to predetermined brightness and color. The processor is for providing at least one initial thermal compensation table, to determine working currents of the LEDs associated with the working temperature. The processor further is for calibrating a content of the initial thermal compensation table corresponding with a current working temperature of the LEDs and storing the calibrated thermal compensation table as the initial thermal compensation table after the calibration function is enabled.

Driving apparatus having an optical sensor and a thermal sensor for thermal and aging compensation of backlight module and driving method of backlight module

A surface light source structure having a circuit board, a first light emitting diode (LED) array, and a second LED array is provided. The first and second LED arrays are assembled on the circuit board. Each LED rows of the two LED arrays has a plurality of LED units connected in series. The LED rows of the first LED array are connected in parallel. The LED rows of the second LED array are connected in parallel. The LED rows of the second LED array are intersected between the LED rows of the first LED array. Positive-to-negative directions of the LED units of the first and second LED array are arranged in opposite directions.

Surface light source structure of backlight module in a flat panel display

A light source control method and a light source control device are used for controlling a light source. The light source control device includes a position detecting sensor and a microcontroller. The light source control method includes steps of generating a first signal according to an object touching a position of the position detecting sensor, and generating a control signal according to a light source adjustable parameter set corresponding to the first signal for controlling an illuminating status of the light source. The light source adjustable parameter set includes a plurality of color value components. The control signal is generated by the microcontroller according to the color value components.

Light source control device and method

An anti-aliasing process without sorting the polygons in depth order to improve the image quality in three-dimensional graphics system. This method comprises extra buffer memory than does a typical three-dimensional graphics display system. The Z buffer stores the depth value of nearest pixel in front Z buffer and depth value of secondary nearest pixels in back Z buffer. The color buffer stores foreground color and background color. A weighting value is used and stored in the frame buffer to blend the foreground color and the background nearest color. The weighting value is associated with each pixel, it indicates the percentage of coverage of a pixel. Every pixel in Z buffer test stage will update the depth of the nearest pixel and the depth of the second nearest in Z-buffer, foreground color and background color in the frame buffer and the weighting value according to the result of depth comparison.

Anti-aliasing for three-dimensional image without sorting polygons in depth order

Memory bandwidth is the bottleneck in a three-dimensional display system. A method with Z-Buffer pre-test reduces the memory accesses in the three-dimensional graphics system. This method includes two depth(Z) caches, a control logic for controlling memory access and two Z(depth) cache mechanisms. If the incoming pixel with Z-Buffer pre-test fails, then the pixel is discarded. Thus, the following texture mapping and other tests for the pixel are eliminated and memory accesses are reduced.

Z-Buffer pre-test for 3D graphics performance enhancement

A cache memory system includes a main memory controller for retrieving memory data from a main memory unit, a cache memory for writing the memory data retrieved by the main memory controller therein, and a tag memory module for detecting presence of a cache hit condition, indicating that an address signal received thereby has a corresponding data entry in the cache memory, or a cache miss condition, indicating a need for accessing the main memory unit. An address queue of a read data controller receives a cache memory address corresponding to the address signal from the tag memory module, and provides the cache memory address to the cache memory to control reading of the memory data from the cache memory. An address queue of a data request controller receives a main memory address and the cache memory address that correspond to the address signal from the tag memory module in the event of the cache miss condition, and provides the main memory address to the main memory controller to control retrieval of the memory data from the main memory unit. An address queue of a write data controller receives the cache memory address from the data request controller, and provides the cache memory address to the cache memory to control writing of the memory data in the cache memory.

Cache memory system with memory request address queue, cache write address queue, and cache read address queue

The present invention discloses a method and system, which discards invalid pixels by using cache memories storing depth values of all pixels having inputted which satisfy a Z Test Mode. The present invention is applied in a three-dimensional graphic system, and uses a plurality of pre-test units to process input pixels in a parallel manner to avoid system performance degeneration due to sequential execution used in prior art. The plurality of pre-test units read the depth values stored in a pre-test Z cache in the system and compare them with the depth values of input pixels being processed according to the Z Test Mode. If the answer is yes, the input pixels are discarded. Otherwise, the content of the pre-test Z cache is updated.

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Hsinchu, Taiwan

Chien-Chung Hsiao