US4679082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Code transmission system character broadcasting receiver
Assignee: Mitsubishi Electric Corp
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Filing: 1985-04-24
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Granted: 1987-07-07
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Expires: 2005-04-24
Abstract
Abstract A receiver for receiving a code transmission system character broadcasting signal transmitted during the vertical blanking period of television video signal, including: a circuit for extracting a character signal inserted in the video signal; a circuit for detecting the existence or non-existence of a code error in the character signal during the horizontal scanning period in which the character signal is inserted and outputting a detection signal; a buffer memory for temporarily storing the character signal accompanied by the detection signal; and a circuit for correcting the code error in a character signal read out from the buffer memory.
Inventors
- 👤 Takeshi Shibasaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:57
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/025; H04N7/035; H04N7/0357
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
97 words
A receiver for a code transmission system broadcast signal transmitted during the vertical blanking period of a television video signal, comprising: means for extracting a character signal inserted in the video signal; means for detecting the existence of a code error in the character signal simultaneously with the extraction of said character signal, and outputting a detection signal corresponding thereto; buffer memory means for temporarily storing the character signal and detection signal corresponding thereto; and correction means, responsive to said detection signal, for correcting the code error in said character signal stored in said buffer memory means.
Claim 2
Dependent Claim
97 words
A receiver for a code transmission system broadcast signal transmitted during the vertical blanking period of a television video signal, comprising: means for extracting a character signal inserted in the video signal; means for detecting the existence of a code error in the character signal simultaneously with the extraction of said character signal, and outputting a detection signal corresponding thereto; buffer memory means for temporarily storing the character signal and detection signal corresponding thereto; and correction means, responsive to said detection signal, for correcting the code error in said character signal stored in said buffer memory means.
Claim 3
Dependent Claim
39 words
The receiver of claim 1, wherein said character signal comprises an information data part and a check code part, said correction means correcting a code error in said character signal based upon the contents of the check code part.
References Cited (Backward Citations)
US4461002A
Cited
US4479146A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-07-06 | 1991-01-05 | 1991-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-06 | 1995-01-05 | 1995-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-06 | 1999-01-05 | 1999-07-07 | $7700.00 | Window Closed / Lapsed |