US4677649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Data receiving apparatus
Assignee: Canon Inc
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Filing: 1984-04-18
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Granted: 1987-06-30
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Expires: 2004-04-18
Abstract
Abstract The present invention provides a data receiving apparatus constituted in such a manner that the received data is converted into a binary code and this binary code data is encoded and this encoded data is stored in a memory, whereby a large quantity of data can be stored in a memory of a small capacity. After subsequently decoding the received encoded data, this decoded data is further encoded by another encoding means and this encoded data is stored in the memory, thereby providing an efficient and economical data receiving apparatus which can smoothly perform the data processing even in the case where the transmission speed of the data and the recording speed of the recording apparatus remarkably differ.
Inventors
- 👤 Kosuke Kunishi
- 👤 Hiroyuki Mikada
- 👤 Tsunehiro Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:18
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/32; H04N1/32358; H04N1/32363; H04N1/32379; H03; H03M; H03M7/00; H03M7/30; H03M7/40; H03M7/42; H04N1/32443
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
96 words
A data receiving apparatus comprising: demodulating means for demodulating coded data received from a data communication line; first converting means for decoding the coded data demodulated by said demodulating means according to an encoding method of said coded data; second converting means for encoding the data decoded by said first converting means in accordance with an encoding method different from the encoding method of coded data received from the date communication line; memory means for storing the data encoded by said second converting means; and recording means for recording the data stored in said memory means.
Claim 2
Dependent Claim
96 words
A data receiving apparatus comprising: demodulating means for demodulating coded data received from a data communication line; first converting means for decoding the coded data demodulated by said demodulating means according to an encoding method of said coded data; second converting means for encoding the data decoded by said first converting means in accordance with an encoding method different from the encoding method of coded data received from the date communication line; memory means for storing the data encoded by said second converting means; and recording means for recording the data stored in said memory means.
Claim 3
Dependent Claim
31 words
A data receiving apparatus according to claim 1, wherein said second converting means performs the encoding processing of a modified Huffman method for the data decoded by said first converting means.
Claim 4
Dependent Claim
113 words
A data receiving apparatus comprising: first converting means for decoding received coded data in accordance with a decoding method corresponding to a first encoding method, the first encoding method being an encoding method of the coded data; second converting means for encoding the data decoded by said first converting means in accordance with a second encoding method, different from the first encoding method; memory means for storing the data encoded by said second converting means; third converting means for decoding the data stored in said memory means using a decoding method corresponding to the second encoding method; and recording means for recording in accordance with the data decoded by said third converting means.
Claim 5
Dependent Claim
113 words
A data receiving apparatus comprising: first converting means for decoding received coded data in accordance with a decoding method corresponding to a first encoding method, the first encoding method being an encoding method of the coded data; second converting means for encoding the data decoded by said first converting means in accordance with a second encoding method, different from the first encoding method; memory means for storing the data encoded by said second converting means; third converting means for decoding the data stored in said memory means using a decoding method corresponding to the second encoding method; and recording means for recording in accordance with the data decoded by said third converting means.
Claim 6
Dependent Claim
30 words
A data receiving apparatus according to claim 3, wherein said second converting means and said third converting means perform the encoding and the decoding of the modified Huffman method, respectively.
Claim 7
Dependent Claim
75 words
A coded image data receiving apparatus comprising: converting means for converting received coded image data to second coded image data; memory means for storing the second coded image data; decoding means for decoding the second coded image data; and recording means for recording in accordance with the data decoded by said decoding means; wherein an encoding method of said received coded image data is different from an encoding method of said second coded image data.
Claim 8
Dependent Claim
75 words
A coded image data receiving apparatus comprising: converting means for converting received coded image data to second coded image data; memory means for storing the second coded image data; decoding means for decoding the second coded image data; and recording means for recording in accordance with the data decoded by said decoding means; wherein an encoding method of said received coded image data is different from an encoding method of said second coded image data.
Claim 9
Dependent Claim
34 words
An apparatus according to claim 5, wherein said converting means includes second decoding means for decoding said received coded image data, and encoding means for encoding the data obtained by said second decoding 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) | 1990-06-29 | 1990-12-29 | 1991-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-29 | 1994-12-29 | 1995-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-29 | 1998-12-29 | 1999-06-30 | $7700.00 | Window Closed / Lapsed |