US5253289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Terminal connection device
Assignee: Murata Machinery Ltd
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Filing: 1991-07-01
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Granted: 1993-10-12
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Expires: 2011-07-01
Abstract
Abstract A terminal connection device changes and connects a plurality of terminals to one telephone line according to kinds of ringing signal sequences sent through the telephone line. The terminal connection device comprises switches connecting between the telephone line and the terminals, a control circuit commanding ON/OFF operation of the switches, and a photo coupler converting the ringing signal obtained through the telephone line into light signal and inputting the light signal to the control circuit. The control circuit includes a device for judging as to whether a ringing signal sequence sent through the telephone line is the same as the sequence data or not.
Inventors
- 👤 Masao Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:27
CPC Classifications
H; H04; H04M; H04M19/00; H04M19/02; H04M19/04; H04M19/041; H04M1/00; H04M1/71; H04M1/715; H04Q; H04Q3/00; H04Q3/58; H04Q3/60; H04Q3/605; H04Q3/607; H04Q5/00; H04Q5/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
113 words
A device for selectively connecting a telephone line and a plurality of terminals in accordance with ringing signal sequences sent through the telephone line, the device comprising: determining means for determining whether a ringing signal sent through the telephone line corresponds to previously stored ringing signal sequence data; and control means for storing the ringing signal sequence sent through the telephone line as ringing signal sequence data when the ringing signal sequence sent through the telephone line does not correspond to the previously stored ringing signal sequence data, and for assigning the ringing signal sequence sent through the telephone line to a terminal which does not have a ringing signal sequence assigned thereto.
Claim 2
Independent Claim
113 words
A device for selectively connecting a telephone line and a plurality of terminals in accordance with ringing signal sequences sent through the telephone line, the device comprising: determining means for determining whether a ringing signal sent through the telephone line corresponds to previously stored ringing signal sequence data; and control means for storing the ringing signal sequence sent through the telephone line as ringing signal sequence data when the ringing signal sequence sent through the telephone line does not correspond to the previously stored ringing signal sequence data, and for assigning the ringing signal sequence sent through the telephone line to a terminal which does not have a ringing signal sequence assigned thereto.
Claim 3
Independent Claim
203 words
A device for selectively connected a telephone line and a plurality of terminals in accordance with ringing signal sequences sent through the telephone line, the device comprising: a plurality of switches connecting the telephone line and the plurality of terminals; a photo coupler for converting a ringing signal sequence sent through the telephone line into a light signal; and a control circuit adapted to receive the light signal and to control an ON/OFF operation of the switches, the control circuit including storage means for storing ringing signal sequence data, determining means for determining whether the ringing signal sequence sent through the telephone line corresponds to previously stored ringing signal sequence data, control means for storing the ringing signal sequence sent through the telephone line as ringing signal sequence data in the storage means when the ringing signal sequence sent through the telephone line does not correspond to the previously stored ringing signal sequence data, and for assigning the ringing signal sequence sent through the telephone line to a terminal which does not have a ringing signal sequence assigned thereto, and main control means for controlling the ON/OFF operation of the switches in response to the ringing signal sequence sent through the telephone line.
Claim 4
Independent Claim
203 words
A device for selectively connected a telephone line and a plurality of terminals in accordance with ringing signal sequences sent through the telephone line, the device comprising: a plurality of switches connecting the telephone line and the plurality of terminals; a photo coupler for converting a ringing signal sequence sent through the telephone line into a light signal; and a control circuit adapted to receive the light signal and to control an ON/OFF operation of the switches, the control circuit including storage means for storing ringing signal sequence data, determining means for determining whether the ringing signal sequence sent through the telephone line corresponds to previously stored ringing signal sequence data, control means for storing the ringing signal sequence sent through the telephone line as ringing signal sequence data in the storage means when the ringing signal sequence sent through the telephone line does not correspond to the previously stored ringing signal sequence data, and for assigning the ringing signal sequence sent through the telephone line to a terminal which does not have a ringing signal sequence assigned thereto, and main control means for controlling the ON/OFF operation of the switches in response to the ringing signal sequence sent through the telephone line.
Claim 5
Independent Claim
70 words
A device for selectively connecting a telephone line and a plurality of terminals in accordance with ringing signal sequences sent through the telephone line, the device comprising: selecting means for selecting a terminal chosen by an operator; storage means for storing a sequence of ringing signals inputted by the operator; and assigning means for assigning the inputted sequence of the ringing signals to the terminal selected by the selecting means.
Claim 6
Independent Claim
70 words
A device for selectively connecting a telephone line and a plurality of terminals in accordance with ringing signal sequences sent through the telephone line, the device comprising: selecting means for selecting a terminal chosen by an operator; storage means for storing a sequence of ringing signals inputted by the operator; and assigning means for assigning the inputted sequence of the ringing signals to the terminal selected by the selecting means.
Claim 7
Dependent Claim
70 words
A device as set forth in claim 3, further comprising: a plurality of switches connecting the telephone line and the terminals, each of the switches defining an ON/OFF operation; a photo coupler for converting a ringing signal sequence sent through the telephone line into a light signal; main control means for receiving the light signal and for controlling the ON/OFF operation of the switches in response to the light signal.
Claim 8
Dependent Claim
20 words
A terminal connection device as set forth in claim 3, wherein the selecting means comprises of a plurality of buttons.
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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) | 1996-10-11 | 1997-04-12 | 1997-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-10-11 | 2001-04-12 | 2001-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-10-11 | 2005-04-12 | 2005-10-12 | $7700.00 | Window Closed / Lapsed |