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IC lets handhelds output video to NTSC, PAL TVs

Posted: 12 Jan 2006 ?? ?Print Version ?Bookmark and Share

Keywords:DAC? CH7023? Macrovision? TV encoder chip? Chrontel?

Targeted at handheld systems, a TV encoder chip dubbed the CH7023 enables mobile telephone handsets, PDAs and portable media players output video directly to a conventional NTSC or PAL television.

The CH7023 video interface chip from Chrontel Inc. accepts digital input resolutions from 220 x 176 pixels up to 720 x 576 pixels, and 8-, 12-, 15-, 16-, 18- or 24bit digital RGB or YCrCb data input.

With two 10-bit high-speed DACs, the CH7023 can drive either CVBS or S-Video analog outputs. The device incorporates Macrovision copy protection, up/down pixel-by-pixel display scaling, programmable power management and adjustable brightness, contrast, hue and saturation control.

The CH7023 can accommodate most input display LCD data rates, supporting pixel clock frequencies from 2MHz to 64MHz. The device consumes 70mA, and supports low-power and long battery life with I/O voltages of 1.2V to 3.3V.

The CH7023 can be found in mobile phone reference designs by NVIDIA.

"The TV-out feature allows consumers to share that visual experience by simply connecting their cellphone or handheld to any TV set," said John Milner, director of wireless media processor sales at NVIDIA. "The versatility of the Chrontel TV encoder enables us to offer TV-out capability across our entire GoForce product line, making a feature available to the whole market rather than just the high-end segment."

The CH7023 video interface chip is housed in a 49-pin BGA and 48-pin LQFP packages. The CH7023 is sampling this quarter with production availability scheduled for Q2 2006. In 10,000-unit quantities, the device will be priced at $3.

- Ismini Scouras
eeProductCenter




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