Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A method for programming and controlling of a plurality of slave devices serially connected in a daisy chain configuration using a master device is disclosed. The method includes broadcasting, from the master device, an initialization data packet to the plurality of slave devices to assign each slave device in the plurality of slave devices a slave address that is unique to said each slave device; storing, in each slave device, the assigned slave address, defining a data packet , wherein the data packet comprises a target slave address, a read/write command, a register address, a increment value, and a start address; and transmitting the data packet serially to one or more of the plurality of slave devices until the target address in the data packet matches the slave address stored in one of the plurality of slave devices.

Abstract: 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 (MI) of one or more bit in length and a fraction section (MF) of one or more bit in length. The input data has an integer section (PWM_MI) and a fraction section (PWM_MF). The adder adds a value of PWM_MF of 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.

Abstract: 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.

Abstract: 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 (MI) of one or more bit in length and a fraction section (MF) of one or more bit in length. The input data has an integer section (PWM_MI) and a fraction section (PWM_MF). The adder adds a value of PWM_MF of 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.

Abstract: 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.