US4270147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for limiting facsimile transmission durations
Assignee: Exxon Mobil Corp
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Filing: 1980-02-11
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Granted: 1981-05-26
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Expires: 2000-02-11
Abstract
Abstract The scanning drum of a facsimile receiver carries a longitudinally extending stripe such that portions of the stripe at opposite extremities of a document carried by the drum are exposed. The width of the stripe at the exposed portion adjacent the leading edge of the document is sensed by an optical sensing head and stored in memory prior to transmitting dark/light variations in the document. The scanning of the document continues until the optical scanning head is juxtaposed to the exposed portion of the drum adjacent the trailing edge of the document. At this time, the width of the stripe is again detected and compared with the width in memory so as to verify that the scanning of the document is complete. The facsimile transmission is then terminated.
Inventors
- 👤 James A. Logie
- 👤 T. James Bryan
- 👤 Arthur G. Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:35
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/00681; H04N1/00684; H04N1/00708; H04N1/0071; H04N1/00742; H04N1/0075; H04N1/00753; H04N1/00763; H04N1/00769; H04N1/04; H04N1/06
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
150 words
A method of controlling the duration of a facsimile transmission in response to the dimension of a document being transmitted from a facsimile apparatus including document support means having a predetermined dark/light surface pattern, sensor means in communication with said surface pattern and/or said document, means for scanning said sensor means relative to said support means and facsimile transmission means coupled to said sensor means for generating transmission signals representing dark/light variations on said document, said method comprising the following steps: placing a document on said scanning means so as to expose at least a portion of said patterns; scanning said sensor means relative to said support means; transmitting facsimile signals representing dark/light variations on said document when said sensor means is in communication with said document; detecting said pattern when said sensor means is in communication with said surface pattern; and terminating said transmitting in response to said detecting.
Claim 2
Independent Claim
150 words
A method of controlling the duration of a facsimile transmission in response to the dimension of a document being transmitted from a facsimile apparatus including document support means having a predetermined dark/light surface pattern, sensor means in communication with said surface pattern and/or said document, means for scanning said sensor means relative to said support means and facsimile transmission means coupled to said sensor means for generating transmission signals representing dark/light variations on said document, said method comprising the following steps: placing a document on said scanning means so as to expose at least a portion of said patterns; scanning said sensor means relative to said support means; transmitting facsimile signals representing dark/light variations on said document when said sensor means is in communication with said document; detecting said pattern when said sensor means is in communication with said surface pattern; and terminating said transmitting in response to said detecting.
Claim 3
Dependent Claim
18 words
The method of claim 1 further comprising the step of accelerating said scanning in response to said detecting.
Claim 4
Dependent Claim
10 words
The method of claim 2 wherein accelerating occurs during terminating.
Claim 5
Dependent Claim
22 words
The method of claim 1 further comprising the steps of detecting said pattern prior to transmitting and storing said pattern in memory.
Claim 6
Dependent Claim
28 words
The method of claim 4 further comprising the step of comparing said stored pattern with the detected pattern and thereafter terminating or transmitting in response to the comparing.
Claim 7
Dependent Claim
20 words
The method of claim 4 wherein said step of comparing is repeated a predetermined number of times prior to terminating.
Claim 8
Dependent Claim
92 words
Facsimile transmitting apparatus comprising: document support means for supporting a document to be transmitted; sensor means in communication with said document and an exposed portion of said document support means not covered by said document; means for scanning said sensor means relative to said document support means; and facsimile transmission means coupled to said sensor means for generating transmission signals representing dark/light variations on a document; the improvement comprising: a dark/light pattern carried by said support means; and means for recognizing said pattern and terminating a transmission in response to said recognizing.
Claim 9
Dependent Claim
92 words
Facsimile transmitting apparatus comprising: document support means for supporting a document to be transmitted; sensor means in communication with said document and an exposed portion of said document support means not covered by said document; means for scanning said sensor means relative to said document support means; and facsimile transmission means coupled to said sensor means for generating transmission signals representing dark/light variations on a document; the improvement comprising: a dark/light pattern carried by said support means; and means for recognizing said pattern and terminating a transmission in response to said recognizing.
Claim 10
Dependent Claim
12 words
The facsimile apparatus of claim 7 wherein said pattern comprises a stripe.
Claim 11
Dependent Claim
22 words
The facsimile apparatus of claim 8 wherein said support means comprises a drum and said stripe extends substantially longitudinally along said drum.
Claim 12
Dependent Claim
71 words
The facsimile apparatus of claim 7 wherein said means for recognizing comprises: means for initially storing said pattern while one exposed portion of said support means adjacent one end of said document is juxtaposed to said sensor means; and means for subsequently comparing the stored pattern with another sensed portion while said other exposed portion of said support means adjacent another end of said document is juxtaposed to said sensor means.
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) | 1984-05-25 | 1984-11-24 | 1985-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-25 | 1988-11-24 | 1989-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-25 | 1992-11-24 | 1993-05-26 | $7700.00 | Window Closed / Lapsed |