Patent US4951156A successfully refreshed from Google Patents.
US4951156A
Expired / Lapsed
US
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Facsimile circuit monitor system
Assignee: Sharp Corp
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Filing: 1988-09-26
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Granted: 1990-08-21
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Expires: 2008-09-26
Abstract
Abstract In a facsimile circuit monitor system, a control signal to be transmitted or received is initially converted into an easily stored code to be stored in a memory. When a certain signal has been received, a signal level is calculated on the basis of actual gain of an AGC (automatic gain control) and stored in the memory so that information stored in the memory may be outputted.
Inventors
- 👤 Matahira Kotani
- 👤 Masafumi Matsumoto
- 👤 Masanori Morigami
- 👤 Masayuki Hachinoda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:26
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/00002; H04N1/00007; H04N1/0001; H04N1/00026; H04N1/00034; H04N1/0035; H04N1/00405; H04N1/00408; H04N1/32; H04N1/32101; H04N1/32106; H04N1/32122; H04N2201/00; H04N2201/32; H04N2201/3201; H04N2201/3212; H04N2201/3219; H04N2201/3273; H04N2201/3274
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
146 words
An internal communication control circuit for a facsimile machine, comprising: input means for receiving data signals, each of said data signals having a control data field and an information data field; means responsive to said input means for converting each said data signal in said control data field into coded data for easy storage; memory means responsive to said means for converting for storing said coded data; monitor means for monitoring the signal level of said inputted data signals by calculating the actual gain of an AGC (automatic gain control) as said data signals are received by said input means; output means responsive to said monitor means for outputting said coded data stored in said memory means once an optional level of AGC is exceeded by the signal level of said data signal; and display means responsive to said output means for displaying said coded data.
Claim 2
Dependent Claim
146 words
An internal communication control circuit for a facsimile machine, comprising: input means for receiving data signals, each of said data signals having a control data field and an information data field; means responsive to said input means for converting each said data signal in said control data field into coded data for easy storage; memory means responsive to said means for converting for storing said coded data; monitor means for monitoring the signal level of said inputted data signals by calculating the actual gain of an AGC (automatic gain control) as said data signals are received by said input means; output means responsive to said monitor means for outputting said coded data stored in said memory means once an optional level of AGC is exceeded by the signal level of said data signal; and display means responsive to said output means for displaying said coded data.
Claim 3
Independent Claim
110 words
A method for communication control in a facsimile machine; comprising: inputting data signals, each of said data signals having a control data field and an information data field; converting said control data field of said data signal into coded data for easy storage; storing said coded data in a memory; monitoring the signal level of said inputted data signals by calculating the actual gain of an AGC (automatic gain control) as said data signals are received by said input means; outputting said coded data stored in said memory once an optimal level of AGC is exceeded by said signal level of said data signal; and displaying said outputted coded data.
Claim 4
Independent Claim
110 words
A method for communication control in a facsimile machine; comprising: inputting data signals, each of said data signals having a control data field and an information data field; converting said control data field of said data signal into coded data for easy storage; storing said coded data in a memory; monitoring the signal level of said inputted data signals by calculating the actual gain of an AGC (automatic gain control) as said data signals are received by said input means; outputting said coded data stored in said memory once an optimal level of AGC is exceeded by said signal level of said data signal; and displaying said outputted coded data.
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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) | 1993-08-20 | 1994-02-19 | 1994-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-20 | 1998-02-19 | 1998-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-20 | 2002-02-19 | 2002-08-21 | $7700.00 | Window Closed / Lapsed |