The Advanced TV Systems Committee (ATSC) approved voluntary guidelines for digital TV receivers, ATSC executives said Tues. The new recommendations provide performance guidelines for receiver sensitivity, multiple signal overload, phase noise, selectivity and multipath. ATSC suggests the use of the antenna control interface specified by the CEA, which facilitates automatic control of antenna parameters, it said. ATSC also provided guidelines for implementing received signal quality indicators for use by consumers -- www.atsc.org.
HDTV will be checking in at U.S. hotels owing to an LG- LodgeNet system for satellite and terrestrial ATSC reception, the companies said Tues. The system is based on an LG- developed off-air platform that transcodes satellite- delivered HDTV channels such as HDNet, HBO-HD, Showtime HD, ESPN HD and Discovery HD Theater for delivery to guest rooms by a hotel’s coaxial distribution system. The signals will be encrypted to provide digital content protection all the way to the sigNETure TV set-top boxes deployed by LodgeNet, the world’s largest provider of interactive TV and broadband services to the lodging industry.
Several consumer electronic executives joined broadcasters that claimed multicasting, rather than just high definition, is essential to the DTV adoption. “For any new technology like HD, content is king and consumers need to understand their programming options,” said Frank Sadowski, Amazon.com vp-consumer electronics (CE) merchandising, during an audioconference Thurs. sponsored by Communications Daily and Consumer Electronics Daily. In order to sell HDTV to consumers, they must understand they have more options, he said.
Public broadcasters charged the wireless industry with failing to respond to their offer to free up the analog spectrum early in return for the govt. setting up a trust fund from proceeds of the spectrum auction. “We are open- minded to working with the wireless service providers, but I have to say that the outreach by the industry to public television has been virtually nonexistent,” said Assn. of Public TV Stations (APTS) Pres. John Lawson in an interview. With their commercial counterparts all but refusing to play along, public TV was banking on support from the wireless industry and public safety industry to push its concept on the Hill and at the FCC for a trust fund for public broadcasters in return for embracing a “hard date” for analog switch off.
Dolby Digital Plus, an upgrade technology claimed to offer twice the data efficiency of the existing Dolby Digital, will be introduced and demonstrated publicly for the first time at next week’s NAB show in Las Vegas, Dolby Labs told our affiliate Consumer Electronics Daily. “We've been working on Dolby Digital to make it further extendable,” as always was the intent when it was first commercialized almost 10 years ago, Craig Eggers, Dolby Labs dir. of consumer technology mktg., told us. The Advanced TV System Committee already has selected Dolby Digital Plus as a “candidate standard” for next-generation enhanced DTV. The technology, which is about 1-2 years away from being commercialized, could find itself in future applications at least as broad as those of Dolby Digital, which is installed in nearly 40 million homes, Eggers said. In addition to ATSC audio, applications will include cable and satellite delivery and for streaming interactivity in next-generation optical discs. Advanced video codecs such as H.264 and others are designed to address the need for more efficient video data transmission through the limited-bandwidth “pipeline” than currently is possible with MPEG-2, Eggers said. “If there are going to be new efficiencies in video, we have to work on new efficiencies in audio, and we've been doing that.” Dolby Digital Plus will enable broadcasters to transmit 5.1-channel HDTV digital audio at 192 kbps -- half the current data transfer rate of 384 kbps, Eggers said. Over-the-air 2- channel HDTV audio also would transfer data at half the current 192 kbps rate, as would stereo DVD recorders, he said. “The issue with Dolby Digital Plus is we're bringing these new efficiencies to the marketplace,” but at no risk to backward compatibility with legacy Dolby Digital products, Eggers said. “We recognize that there’s 40 million AV receivers out there in the universe” with Dolby Digital, he said. “We recognize we have an obligation to the consumer when we introduce anything new around the Dolby Digital format, as receivers go.” For the consumer, the transition to Dolby Digital Plus will be “seamless,” Eggers said. He said typically, a Dolby Digital Plus signal would be streamed to a set-top box, then outconverted and sent through a SPDIF output to an AV receiver as a standard Dolby Digital signal.
The Advanced TV Systems Committee (ATSC) has approved an enhanced version of Dolby AC-3 for next-generation digital TV audio, a Dolby Labs spokesman confirmed. The system, called “Dolby Digital Plus,” was approved by the ATSC as a “candidate standard,” the spokesman said.
Licensing group MPEG LA, bowing to broadcaster resistance, has imposed changes in its royalty and license structure to encourage broader implementation of the H.264 video compression system for advanced TV. But initial broadcaster adoption of H.264 has crawled along, mainly because the rank and file know little about it. Moreover, the Advanced TV Systems Committee (ATSC) only recently has begun accepting proposals on next-generation codecs for digital TV (CD March 31 p14).
A common HDTV standard for the entire Western Hemisphere “makes eminent sense,” and the recommendation last week that Mexico adopt the U.S. ATSC standard was a big step in that direction, said Phillip Bond, U.S. Undersecy. of Commerce- Technology. He told the Advanced TV Systems Committee (ATSC) conference this week he hoped the Mexican govt. would finalize that decision soon. The Commerce Dept. has given the ATSC a 3-year, $400,000 grant to promote adoption of the U.S. standard. ATSC has estimated a common hemispheric standard would generate $8 billion of U.S. exports by 2014.
An ATSC standards committee has received about a dozen proposals on new audio and video codecs for advanced TV but thus far has accepted only a plan by Dolby Labs for AAC multichannel audio coding, John Whitaker, ATSC vp-standards development, told his group’s annual meeting Tues. in Washington. The committee, chaired by Bill Miller of ABC, has agreed to put off the MPEG-4-based H.264 and Microsoft Windows Media 9 video codecs for further study, Whitaker said.
To give a boost to its digital transition strategy of embracing a hard date for turning off analog, public TV is planning to develop legislation with sympathetic members of Congress to create a public broadcasting trust fund from proceeds of the analog spectrum auction. The move follows clear signals from public TV stations that setting up a trust fund was a “prerequisite” for early handover of analog spectrum, Assn. of Public TV (APTS) Pres. John Lawson told us. A draft plan for adopting a hard date for digital-only broadcasting (DOB) has been submitted to the APTS board and to member stations, he said, and “we hope in the first half of this year to present our membership and our board with a pretty comprehensive plan for digital-only broadcasting.”