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To: Stoctrash who wrote (24950)11/7/1997 3:18:00 PM
From: John Rieman  Respond to of 50808
 
LG's new patten for 2 channel HDTV recording...........................

digitaltheater.com

Method and apparatus for recording HDTV signals having a wide bandwidth on a narrow bandwidth tape

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[ Back to the News | Back HOME ]

MicroPatent via Individual Inc. : Abstract: A method of, and an apparatus for, the
two-channel recording/playing back of signals in a VCR, wherein video data is divided
into a signal with two channels to be recorded, so that HDTV signals can be recorded
on a general S-VHS tape and played back therefrom. The apparatus includes: record
system means for interleaving inputted data to divide it into two channels by adding
dummy blocks and synchronizing blocks to the data at intervals of every two frames so
as to record the data in two channels; playback system means for detecting data; and,
synchronizing signal means for removing the dummy blocks and synchronizing blocks,
based on the synchronizing signal, so as to format the data; means for combining and
de-interleaving data of the two channels, and means for error-correcting and decoding
the two channels.

Ex Claim Text: A method for the two-channel recording/playing back of High Definition
Television (HDTV) signals having a wide bandwidth using a narrow bandwidth
recording video tape with a digital video cassette recorder, said method comprising the
steps of: recording wide bandwidth data on a narrow bandwidth recording video tape in
two channels, the recording step including the sub-steps of: error correcting a received
digital signal in a wide bandwidth so as to form error-corrected data; interleaving said
error-corrected data; dividing the interleaved wide bandwidth data into two channels of
narrow bandwidth data by alternately selecting said interleaved data so as to form
two-channel data; formatting the two-channels of narrow bandwidth data by adding
dummy blocks at an end position of each track so as to prevent the generation of errors
when head switching and adding synchronizing blocks at intervals of every two frames
so as to make the number of blocks per track constant; recording the formatted narrow
bandwidth data on a narrow bandwidth video tape; and playing back the wide
bandwidth data using the narrow bandwidth data recorded on the narrow bandwidth
video tape recorded in two channels, the playing-back step including the sub-steps of:
demodulating two-channel narrow bandwidth data obtained from the narrow bandwidth
video tape; and formatting the two-channel narrow bandwidth data by removing the
dummy blocks and the synchronizing blocks from the two-channel data; two-channel
data; combining the formatted two-channel narrow bandwidth data into wide bandwidth
data and de-interleaving the wide bandwidth data. bandwidth data.

Assignee: Goldstar Co., Ltd.

Patent Number: 5682457

Issue Date: 1997 10 28

Inventor(s): Woo, Sang Joon{#buJang, Kook Hyun#}

Yang, Tai Suk

Oh, Taik Sang

If you would like to purchase a copy of this patent, please call MicroPatent at
800-984-9800.

[Copyright 1997, MicroPatent Publications]



To: Stoctrash who wrote (24950)11/8/1997 10:01:00 AM
From: John Rieman  Respond to of 50808
 
Digital TV rollout......................................

multichannel.com

Adelphia Completes Digital Rollout

By LINDA MOSS

Adelphia Communications Corp., looking to compete during the holidays against direct-broadcast satellite, this week will finish rolling out digital video to 1.7 million homes in more than 25 cable systems.

The MSO's digital deployment, which started in late October and should be done by Nov. 15, is one of the largest to date. Tele-Communications Inc. is also doing a major rollout, while Cox Communications Inc. and Comcast Corp. are taking a slower, market-by-market approach.

"We've been working on it [the digital deployment] for some time now," said Michael Rigas, Adelphia's executive vice president of operations. "We wanted to get a product out before the holiday season, to blunt the impact of DSS ads. We at least wanted to take the step."

Adelphia's digital platform incorporates NextLevel Systems Inc.'s DCT-1000 digital set-tops and Headend in the Sky, the TCI unit that provides digitized programming and control services to operators. Adelphia this year plans only a "soft marketing" effort for the digital service, officials said.

By the end of the year, Adelphia expects to sign up between 5,000 and 6,000 homes for digital video. But within two to three years, it projects a 20 to 25 percent penetration rate.

Adelphia Digital Cable, at $9.95 a month, will offer up to 17 channels of premium multiplexes (assuming subscribers already are buying those services), 18 channels of pay-per-view, 40 channels of digital audio from Music Choice and the Prevue Interactive on-screen guide.

Adelphia is providing those services first, primarily premium multiplexes and digital audio, because those are the main reasons why cable subscribers are going to DBS, Rigas said. That's why initially Adelphia's digital package doesn't include basic cable networks, although Rigas said they will be added on later on.

"The primary goal now is to keep the customer who is interested in getting DSS," Rigas said.

HITS will provide Adelphia with access and control for the digital boxes and with the 18 digital PPV feeds. Adelphia is taking Home Box Office, Showtime and its The Movie Channel, as well as Music Choice direct from those programmers.

Adelphia is going that route for economic reasons, and because the HITS transponders didn't quite line up right in terms of Adelphia's needs for the multiplexes, officials said.

Adelphia started its digital launch Oct. 27 in more than a dozen markets including suburban Philadelphia, its headquarters city of Coudersport, Pa., and Dover Township, N.J., where the MSO is competing head to head with Bell Atlantic Video Service. This week, Adelphia will put digital in front of its final 10 markets, including Hilton Head, S.C., and Saranac Lake, N.Y.

Regarding the scope and speed of the launch, Rigas said, "Once you've made the preparations and found the bandwidth, it's not that much more difficult to do it all at once. There's a certain amount of work you have to do anyway."

Adelphia won't aggressively market digital video this year.

"The initial marketing will be soft," said John Aducci, Adelphia's director of marketing and sales. "We're not really shouting it from the mountaintops."

Adelphia is going slow with the marketing push because it wants "to get the product out and be sure it works," according to Rigas.

Another reason for the slow-go is that Adelphia is waiting for the next generation of digital set-tops to become available, official said.

Now Adelphia is marketing digital by sending direct-mail to its multiple-pay service subscribers, as well as sending out bill stuffers, Aducci said. Cross-channel promos are also running. Telemarketing may eventually follow, and Adelphia plans to step up its marketing efforts in the first and second quarters next year.

About a month ago, Adelphia did a marketing test of digital video in Buffalo, N.Y., Aducci said, which involved mailings to 12,000 homes and telemarketing to 500 multi-pay homes. The MSO got a 10 percent acceptance rate from the 500 multi-pay homes.

Rigas and Aducci said that they consider customer education one of the big challenges of digital, and Adelphia is creating a user's guide to explain functions such as the navigator.

At this point, Adelphia isn't bundling digital cable with its other advanced services, which include long-distance phone, high-speed data access, pagers and security systems. Bundling could be done down the road, officials said.

Because not all of Adelphia's plants have two-way capability, the MSO will use a telephone return for its set-tops.