High-speed image enhancement for digital and TV picture signals

Rohm Electronics has introduced two ICs with integrated Adaptive Image Enhancement (AIE) capability to improve image clarity in TV and digitalcamera applications. Rohm’s AIE technology improves the visibility of dark portions in high-contrast images without increasing the overall brightness of the image.

The BU1571KN provides a digital-camera input supporting up to 2Mpixels, and applies AIE to the received data. Selectable output formats are UXGA resolution at 7.5 frames/s, SXGA at 15 frames/s or VGA at 30 frames/s. The BFU1571KN is delivered in a 36-pin VQFN package with a footprint measuring 6.2mm x 6.2mm.

The second chip with built-in AIE is the BU6520KV, a TV encoder IC offering CCIR601/656-compatible inputs and outputs. An analogue composite video output supporting PAL and NTSC formats is also provided. The BFU6520KV also performs edge enhancement and gamma correction to optimise image quality. Major uses will be restoring the black level of moving images displayed on LCD panels. The device is delivered in a 9mm x 9mm VQFP surface-mount package.

 

FEATURES Automatic image calibration Minimal external components I2C and EEPROM interfaces Adjustable AIE parameters

APPLICATIONS Security systems Mobile cameras Home automation systems Intercom systems

 

 

Rohm/Image Processors