Patent US5381476A successfully refreshed from Google Patents.
US5381476A
Expired / Lapsed
US
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Video theater system and reproducing apparatus therefor
Assignee: Panasonic Holdings Corp
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Filing: 1993-01-22
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Granted: 1995-01-10
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Expires: 2013-01-22
Abstract
Abstract A video theater system has a reproducing apparatus by which picture reproduced from a distribution tape and picture received from a communication satellite are alternatively put on the screen. A scrambled signal transmitted from the communication satellite is converted to a scrambled signal of the same form signal as the scrambled signal reproduced from the distribution tape, thus enabling a common decoder to descramble both the two signals coming from different input routes from each other.
Inventors
- 👤 Takayuki Kimoto
- 👤 Tatsuhiro Hosokawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:05
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/00086; G11B20/0021; G11B20/00485; G11B20/00492; G11B20/00514; H; H04; H04N; H04N5/00; H04N5/76; H04N5/765; H04N5/78; H04N5/782; H04N5/91; H04N7/00; H04N7/16; H04N7/167; G06; G06F; G06F2211/00; G06F2211/007
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
109 words
A video theater system comprising: reproducing means for reproducing a first scrambled signal recorded on a video tape; receiving means for receiving a second scrambled signal transmitted from a communication satellite; signal converting means for removing a copy-protection process from said second scrambled signal to thereby convert said second scrambled signal into a third scrambled signal which is of the same form as said first scrambled signal; selection means for selecting one of said first scrambled signal and said third scrambled signal; descrambling means for descrambling a signal selected by said selection means into a picture signal; and display means for displaying a picture based on said picture signal.
Claim 2
Dependent Claim
109 words
A video theater system comprising: reproducing means for reproducing a first scrambled signal recorded on a video tape; receiving means for receiving a second scrambled signal transmitted from a communication satellite; signal converting means for removing a copy-protection process from said second scrambled signal to thereby convert said second scrambled signal into a third scrambled signal which is of the same form as said first scrambled signal; selection means for selecting one of said first scrambled signal and said third scrambled signal; descrambling means for descrambling a signal selected by said selection means into a picture signal; and display means for displaying a picture based on said picture signal.
Claim 3
Dependent Claim
49 words
A video theater system in accordance with claim 1, wherein said first scrambled signal is scrambled by a line permutation process; and said second scrambled signal is scrambled by said line permutation process and is processed by at least one of a synchronization-suppression-and-synchronization-level-shift process and a video inversion process.
Claim 4
Dependent Claim
183 words
A reproducing apparatus for a video theater comprising: a reproducing video cassette recorder for reproducing a signal recorded on a video tape in a form scrambled by a process of line permutation; receiving means for receiving a signal transmitted from a communication satellite in a form copy-protected by at least two processes, one of said at least two processes being a line permutation process; a first decoder for removing a copy-protection process other than a line permutation process from a signal received by said receiving means; multiplexing means for extracting a scramble key signal from an output signal of said first decoder and for multiplexing a picture signal of said output signal with a signal made by adding a synchronization signal to said scramble key signal within a vertical blanking period; selection means for selecting one of signals issued from said reproducing video cassette recorder and said multiplexing means; a second decoder for removing a line permutation scrambling process from a signal selected by said selection means; and display means for displaying a picture based on an output signal of said second decoder.
Claim 5
Dependent Claim
183 words
A reproducing apparatus for a video theater comprising: a reproducing video cassette recorder for reproducing a signal recorded on a video tape in a form scrambled by a process of line permutation; receiving means for receiving a signal transmitted from a communication satellite in a form copy-protected by at least two processes, one of said at least two processes being a line permutation process; a first decoder for removing a copy-protection process other than a line permutation process from a signal received by said receiving means; multiplexing means for extracting a scramble key signal from an output signal of said first decoder and for multiplexing a picture signal of said output signal with a signal made by adding a synchronization signal to said scramble key signal within a vertical blanking period; selection means for selecting one of signals issued from said reproducing video cassette recorder and said multiplexing means; a second decoder for removing a line permutation scrambling process from a signal selected by said selection means; and display means for displaying a picture based on an output signal of said second decoder.
Claim 6
Dependent Claim
208 words
A reproducing apparatus for a video theater comprising: a reproducing video cassette recorder for reproducing a signal recorded on a video tape in a form scrambled by a process of line permutation; receiving means for receiving a signal transmitted from a communication satellite in a form copy-protected by at least two processes, one of said at least two processing being a line permutation process; a first decoder for removing a copy-protection process other than a line permutation process from a signal received by said receiving means; encoding means for extracting a scramble key signal from an output signal issued from said first decoder and for applying a predetermined encoding to said scramble key signal; a synchronizing signal adder for adding a synchronizing signal to an output signal of said encoding means; a multiplexing device for multiplexing a picture signal of an output signal of the first decoder by an output signal of said synchronizing signal adder; selection means for selecting one of signals issued from said reproducing video cassette recorder and said multiplexing device; a second decoder for removing a line permutation scrambling process from a signal selected by said selection means; and display means for displaying a picture based on an output signal of said second decoder.
Claim 7
Dependent Claim
208 words
A reproducing apparatus for a video theater comprising: a reproducing video cassette recorder for reproducing a signal recorded on a video tape in a form scrambled by a process of line permutation; receiving means for receiving a signal transmitted from a communication satellite in a form copy-protected by at least two processes, one of said at least two processing being a line permutation process; a first decoder for removing a copy-protection process other than a line permutation process from a signal received by said receiving means; encoding means for extracting a scramble key signal from an output signal issued from said first decoder and for applying a predetermined encoding to said scramble key signal; a synchronizing signal adder for adding a synchronizing signal to an output signal of said encoding means; a multiplexing device for multiplexing a picture signal of an output signal of the first decoder by an output signal of said synchronizing signal adder; selection means for selecting one of signals issued from said reproducing video cassette recorder and said multiplexing device; a second decoder for removing a line permutation scrambling process from a signal selected by said selection means; and display means for displaying a picture based on an output signal of said second decoder.
Claim 8
Dependent Claim
29 words
A reproducing apparatus for a video theater in accordance with claim 3, wherein said multiplexing means multiplexes said added signal in a vertical blanking period of said picture signal.
Claim 9
Dependent Claim
29 words
A reproducing apparatus for a video theater in accordance with claim 4, wherein said multiplexing means multiplexes said added signal in a vertical blanking period of said picture signal.
Claim 10
Dependent Claim
28 words
A reproducing apparatus for a video theater in accordance with any one of claims 3-6, wherein said second decoder is incorporated in a casing of said display means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-01-09 | 1998-07-11 | 1999-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-01-09 | 2002-07-11 | 2003-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-01-09 | 2006-07-11 | 2007-01-10 | $7700.00 | Window Closed / Lapsed |