Abstract: The low power image sensor includes: an image sensing unit which senses light from an object, converts the light into an electric signal, and outputs the electric signal; a comparing unit which receives an electric signal from the image sensor, compares a voltage level of the electric signal with a reference voltage, and outputs an image signal as a 1 bit signal per pixel; and an effective image adjuster which compares bit value distribution of an image signal output from the comparing unit with a preset effective range, and adjusts the reference voltage to output an effective image. Further, an optical pointing device includes: an image sensor which senses light from an object and outputs an image signal; and a motion computing unit which receives the image signal and compares before and after images to calculate a motion vector.

Abstract: The present invention relates to a grid signal receiver and a wireless pointing system having the same. The grid signal receiver receives a signal of a grid pattern from a grid signal transmitter and determines motion of the grid signal transmitter, the grid signal receiver including a slope sensor in addition to a motion sensor for sensing motion of a grid, the slope sensor sensing a slope of the grid to sense a slope of the grid signal transmitter.

Abstract: A remote control transceiver is described. The remote control transceiver reduces costs by simplifying a structure of a conventional space movement remote controller including an acceleration sensor, a microprocessor, a radio transmitting unit, and a radio receiver. A grid pattern formed by a light emitting diode (LED) and an optical system of a transmitter is determined by an infrared sensor of a receiver to discern space movement location information of the transmitter. The remote control transceiver includes a remote control transmitter and a remote control receiver. The remote control transmitter includes a key input unit for receiving commands, an LED driver for controlling the operation of an LED in response to a command signal generated from the key input unit, and a pattern generator for generating a grid pattern using light generated from the LED.

Abstract: The low power image sensor includes: an image sensing unit which senses light from an object, converts the light into an electric signal, and outputs the electric signal; a comparing unit which receives an electric signal from the image sensor, compares a voltage level of the electric signal with a reference voltage, and outputs an image signal as a 1 bit signal per pixel; and an effective image adjuster which compares bit value distribution of an image signal output from the comperator with a preset effective range, and adjusts the effective image to output an effective image. Further, an optical pointing device includes: an image sensor which senses light from an object and outputs an image signal; and a motion computing unit which receives the image signal and compares before and after images to calculate a motion vector.

Abstract: Disclosed is an infrared remote control receiver comprising a photo diode for converting an optical signal to an electrical signal, a semiconductor signal processing device for receiving the electrical from the photo diode, eliminating noise components from the electrical signal output from the photo diode and generating a pulse signal corresponding to a remote control signal transmitted from a remote control transmission device, and a micro computer for receiving the pulse signal from the semiconductor signal processing device and performing a remote control operation instructed by a user of the remote control transmission device by decoding the received pulse signal, wherein the semiconductor signal processing device is fabricated using CMOS devices fabrication processes.