US5146352A
Expired / Lapsed
US
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Reader/recorder in a facsimile machine
Assignee: Toshiba Corp
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Filing: 1992-02-05
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Granted: 1992-09-08
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Expires: 2012-02-05
Abstract
Abstract A reader/recorder in a facsimile machine which is so arranged that, when it is desired to establish a communication with any of facsimile machines belonging to group 3 (G3) or group 4(G4) of the CCITT recommendation, a picture size compatibility can be maintained only by carrying out a reduction processing without an enlargement processing over picture signals.
Inventors
- 👤 Toshihiko Nannichi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:30
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/32; H04N1/333; H04N1/33338; H04N1/33307; H04N1/33315
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
189 words
A reader for use in a first facsimile machine, the reader comprising: means for scanning a document in a main-scanning direction to produce a main-scanning direction component of a picture signal, the main-scanning direction component being expressed in terms of G3 pixels/mm based on a metric unit system, and for scanning a document in a sub-scanning direction perpendicular to the main-scanning direction to produce a sub-scanning direction component of the picture signal, the sub-scanning direction component being expressed in terms of G4 lines/inch based on an inch unit system; means for transmitting the picture signal to a second facsimile machine; and means for performing a reduction processing on the main-scanning direction component of the picture signal when the second facsimile machine is adapted to receive a main-scanning direction component of a picture signal expressed in terms of G4 pixels/inch based on an inch unit system, and for performing a reduction processing on the sub-scanning direction component of the picture signal when the second facsimile machine is adapted to receive a sub-scanning direction component of a picture signal expressed in terms of G3 lines/mm based on a metric unit system.
Claim 2
Dependent Claim
189 words
A reader for use in a first facsimile machine, the reader comprising: means for scanning a document in a main-scanning direction to produce a main-scanning direction component of a picture signal, the main-scanning direction component being expressed in terms of G3 pixels/mm based on a metric unit system, and for scanning a document in a sub-scanning direction perpendicular to the main-scanning direction to produce a sub-scanning direction component of the picture signal, the sub-scanning direction component being expressed in terms of G4 lines/inch based on an inch unit system; means for transmitting the picture signal to a second facsimile machine; and means for performing a reduction processing on the main-scanning direction component of the picture signal when the second facsimile machine is adapted to receive a main-scanning direction component of a picture signal expressed in terms of G4 pixels/inch based on an inch unit system, and for performing a reduction processing on the sub-scanning direction component of the picture signal when the second facsimile machine is adapted to receive a sub-scanning direction component of a picture signal expressed in terms of G3 lines/mm based on a metric unit system.
Claim 3
Dependent Claim
123 words
A recorder for use in a first facsimile machine, the recorder comprising: means for receiving a picture signal from a second facsimile machine, the picture signal having a main-scanning direction component and a sub-scanning direction component; and means for performing a reduction processing on the main-scanning direction component of the picture signal produced by the second facsimile machine when the main-scanning direction component of the picture signal is expressed in terms of G3 pixels/mm based on a metric unit system, and for performing a reduction processing on the sub-scanning direction component of the picture signal produced by the second facsimile machine when the sub-scanning direction component of the picture signal is expressed in terms of G4 lines/inch based on an inch unit system.
Claim 4
Dependent Claim
123 words
A recorder for use in a first facsimile machine, the recorder comprising: means for receiving a picture signal from a second facsimile machine, the picture signal having a main-scanning direction component and a sub-scanning direction component; and means for performing a reduction processing on the main-scanning direction component of the picture signal produced by the second facsimile machine when the main-scanning direction component of the picture signal is expressed in terms of G3 pixels/mm based on a metric unit system, and for performing a reduction processing on the sub-scanning direction component of the picture signal produced by the second facsimile machine when the sub-scanning direction component of the picture signal is expressed in terms of G4 lines/inch based on an inch unit system.
Claim 5
Dependent Claim
310 words
A reader/recorder for use in a first facsimile machine, the reader/recorder comprising: means for scanning a document in a main-scanning direction to produce a main-scanning direction component of a picture signal, the main-scanning direction component being expressed in terms of G3 pixels/mm based on a metric unit system, and for scanning the document in a sub-scanning direction perpendicular to the main-scanning direction to produce a sub-scanning direction component of the picture signal, the sub-scanning direction component being expressed in terms of G4 lines/inch based on an inch unit system; means for transmitting the picture signal produced by the first facsimile machine to a second facsimile machine; means for performing a reduction processing on the main-scanning direction component of the picture signal when the second facsimile machine is adapted to receive a main-scanning direction component of a picture signal expressed in terms of G4 pixels/inch based on an inch unit system, and for performing a reduction processing on the sub-scanning direction component of the picture signal when the second facsimile machine is adapted to receive a sub-scanning direction component of a picture signal expressed in terms of G3 lines/mm based on a metric unit system; means for receiving a picture signal transmitted by the second facsimile machine, the picture signal from the second facsimile machine having a main-scanning direction component and a sub-scanning direction component; and means for performing a reduction processing on the main-scanning direction component of the picture signal produced by the second facsimile machine when the main-scanning direction component of the picture signal is expressed in terms of G3 pixels/mm based on a metric unit system, and for performing a reduction processing on the sub-scanning direction component of the picture signal produced by the second facsimile machine when the sub-scanning direction component of the picture signal is expressed in terms of G4 lines/inch based on an inch system.
Claim 6
Dependent Claim
310 words
A reader/recorder for use in a first facsimile machine, the reader/recorder comprising: means for scanning a document in a main-scanning direction to produce a main-scanning direction component of a picture signal, the main-scanning direction component being expressed in terms of G3 pixels/mm based on a metric unit system, and for scanning the document in a sub-scanning direction perpendicular to the main-scanning direction to produce a sub-scanning direction component of the picture signal, the sub-scanning direction component being expressed in terms of G4 lines/inch based on an inch unit system; means for transmitting the picture signal produced by the first facsimile machine to a second facsimile machine; means for performing a reduction processing on the main-scanning direction component of the picture signal when the second facsimile machine is adapted to receive a main-scanning direction component of a picture signal expressed in terms of G4 pixels/inch based on an inch unit system, and for performing a reduction processing on the sub-scanning direction component of the picture signal when the second facsimile machine is adapted to receive a sub-scanning direction component of a picture signal expressed in terms of G3 lines/mm based on a metric unit system; means for receiving a picture signal transmitted by the second facsimile machine, the picture signal from the second facsimile machine having a main-scanning direction component and a sub-scanning direction component; and means for performing a reduction processing on the main-scanning direction component of the picture signal produced by the second facsimile machine when the main-scanning direction component of the picture signal is expressed in terms of G3 pixels/mm based on a metric unit system, and for performing a reduction processing on the sub-scanning direction component of the picture signal produced by the second facsimile machine when the sub-scanning direction component of the picture signal is expressed in terms of G4 lines/inch based on an inch system.
Claim 7
Dependent Claim
64 words
The reader/recorder of claim 3, further comprising: means for receiving data from the second facsimile machine indicating how the main-scanning and sub-scanning components of the picture signal produced by the second facsimile machine are expressed; and means for transmitting data to the second facsimile machine indicating how the main-scanning and sub-scanning components of the picture signal produced by the first facsimile machine are expressed.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-09-08 | 1996-03-09 | 1996-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-08 | 2000-03-09 | 2000-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-08 | 2004-03-09 | 2004-09-08 | $7700.00 | Window Closed / Lapsed |