Abstract: A light generating device includes: an LED module that includes a number of LED groups each of which has a number of LEDs, a memory for storing drive current for a number of LED groups respectively, an LED module driving unit for driving one of the LED groups, a current controller for controlling the drive current flowing to the LED module driving unit to drive the selected LED group, a temperature sensor for sensing heat created from the selected LED group, an operation unit for calculating the correct drive current when LEDs in the selected LED group emit light, and a key input unit for selecting one of the LED groups or a number of LED groups. The light generating device increases the light emission efficiency.

Abstract: An image-signal processor may be provided to support CCD image sensors. A timing generator may provide timing signals to CCD image sensors, to enable each of the CCD image sensors to output captured-image data in form of an analog signal that a corresponding A/D converter converts into a CYMG signal. Image-processing parts may receive the CYMG image signal from the A/D converter and convert the CYMG image signal into an YCbCr signal. An image-combination part may combine horizontally or vertically images in form of the YCbCr signal into a combination image and store the combination image in an internal memory, and scale down horizontally or vertically the combination image while reading out the combination image from the internal memory, storing the scaled-down combination image in an external memory, and outputting the scaled-down combination image in form of an YCbCr signal.

Abstract: There is provided a method for performing digital processing on an image signal output from CCD image sensors with a CMYG color filter array, the method including converting a digital CMYG signal of 10 bits each into a first YCbCr signal of 10 bits each, by using color interpolation, converting the first YCbCr signal of 10 bits each into an RGB signal of 8 bits each by using interpolation, performing color correction on the RGB signal of 8 bits each and converting a color-corrected RGB signal of 8 bits each into a second YCbCr signal of 8 bits each in a format which complies with the ITU-601 format, encoding the second YCbCr signal of 8 bits each and converting an encoded second YCbr signal of 8 bits each into an analog video signal, and adjusting automatic exposure and automatic white balance, using the RGB signal of 8 bits each and the second YCbCr signal of 8 bits each.

Abstract: There is provided a method for performing digital processing on an image signal output from CCD image sensors with a CMYG color filter array, the method including converting a digital CMYG signal of 10 bits each into a first YCbCr signal of 10 bits each, by using color interpolation, converting the first YCbCr signal of 10 bits each into an RGB signal of 8 bits each by using interpolation, performing color correction on the RGB signal of 8 bits each and converting a color-corrected RGB signal of 8 bits each into a second YCbCr signal of 8 bits each in a format which complies with the ITU-601 format, encoding the second YCbCr signal of 8 bits each and converting an encoded second YCbr signal of 8 bits each into an analog video signal, and adjusting automatic exposure and automatic white balance, using the RGB signal of 8 bits each and the second YCbCr signal of 8 bits each.