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TV receiver supports analog, digital broadcasts

Posted: 03 Dec 2009 ?? ?Print Version ?Bookmark and Share

Keywords:TV receiver? analog? digital broadcast? processor?

From Fresco Microchip Inc. comes a single-chip solution that supports universal analog audio and video demodulation as well as digital IF processing for global terrestrial and cable TV markets.

The FM1151 universal analog demodulator and digital IF processor, the latest edition to Fresco's FM1100 product family, offers lower system costs and better performance.

Fresco said Panasonic Electronic Devices (PED) has selected the FM1151 for its latest hybrid tuners. PED's next-generation VP35HR tuner family is designed for terrestrial and cable broadcasts across Europe, Asia and Latin America, according to Fresco.

According to Melissa Chee, Fresco's director of marketing, the FM1151 enables TV manufacturers to deal with fewer suppliers, since it integrates SAW filter functionality, eliminating the need for external components.

"One of the key things we've been hearing back from our customers, with the consumer electronics industry going through consolidation, there is a desire to reduce the number of suppliers," Chee said.

While the United States has completed the transition from digital to analog over-the-air TV broadcasting earlier this year, many emerging countries have not made the change, Chee said. Some have not even set a date for such a transition, she added. This complicates life for TV manufacturers, who need to create different regional skews to support analog and digital markets, she said.

Because it is fully compatible with standard and non-standard audio and video analog and digital broadcasts, the FM1151 can help eliminate the need for regional skews of TVs, Chee said.

"Digital is definitely starting to take off, but in many regions in the world it's occurring at different paces," Chee said. "Really, the opportunity is in hybrid, allowing TVs to support multiple regions."

According to Paul Gray, director of TV electronics research for market research firm DisplaySearch, with developed markets essentially saturated, the TV market is now being driving by emerging markets.

"All major set makers are seeking ways to reduce their development costs and time to market, and universal systems for global TV reception are a key way to reduce product diversity and improve R&D efficiency," Gray said.

According to Fresco, FM1151 integrates the company's agileSP architecture and features video clarity enhancements such as smearing and ringing reduction. The chip accepts the IF output directly from CAN and silicon tuners and demodulates worldwide legacy audio/video (WAVe) to generate analog CVBS video with SIF or MONO audio, Fresco said.

The digital IF output is compatible with a broad range of standard downstream digital demodulators, Fresco said.

According to Fresco, the FM1151 supports standards including NTSC, PAL, SECAM, DVB-T/T2, ATSC, ISDB-T, DTMB and DVB-C/ITU J.83.

The FM1151 is in production now and samples are available to qualified customers, Fresco said.

In recent weeks, Fresco has disclosed a number of design wins including an announcement that tuner manufacturer NuTune is shipping hybrid and analog tuner module products using two chips from Fresco's FM1100 family. Fresco also said last month that LG Innotek chose its universal analog demodulator and digital IF processor IC to power what it called the first global hybrid tuner modules.

- Dylan McGrath
EE Times

For application notes on TV receiver click here.

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