Sct Incorporated

Jim Wickenhiser

Eric Li

Shang-Kuan Tang

Yi Zhang

Brandon Li

Shean-Yih Chiou

Sheanyih Chiou

A method for programming and controlling of a plurality of slave devices serially connected in a daisy chain configuration using a master device includes assigning a unique slave address to each slave device in the plurality of slave devices by sending an initialization data packet from the master device serially through the plurality of slave devices; storing, in each of the plurality of slave devices, the assigned slave address; defining a data packet; and transmitting the data packet serially to one or more of the plurality of slave devices. The data packet has a target slave address, a read/write command, a start address, and optionally a register address and an increment value.

Methods for identifying target slave address for serial communication interface

An LED display device includes an LED array and a driver system thereof. The LED display device is configured so that LEDs in the LED array can switch between receiving scan signals at their anodes or receiving scan signals at their cathodes.

Channel-scan switchable LED driving

An LED panel has an interleaved topology in which two adjacent LED rows in the LED panel are driven by different drivers. A delay time can be implemented between starting times two adjacent LED rows. Such an LCD panel can be employed to backlight an LCD panel in an LCD display. Implementing a delay time in driving the LED panel can reduce visual artifacts in the LCD display.

Common delay for LCD backlighting using LEDs

The LED display system includes an array of LEDs and a driver circuit. The driver circuit has a PWM engine, an adder, an accumulator, a multiplier, and a frame butter. The multiplier multiplies an image data of a first bit depth (PWM) with a multiple (M) to produce an input data (PWM_M) having a second bit depth. The multiple has an integer section (M) of one or more bit in length and a fraction section (M) of one or more bit in length. The input data has an integer section (PWM_M) and a fraction section (PWM_M). The adder adds a value of PWM_Mof a current input data with a value of a remainder in an accumulator. The PWM engine receives PWM data from the frame buffer and generates PWM pulses to drive the LED array.

Growing community of inventors

Milpitas, CA, United States of America

Jim Wickenhiser