US4286118A — Data distribution system for private automatic br…

Claim 1

Independent Claim 275 words

In a private branch telephone exchange including a switching matrix for connecting a plurality of incoming trunk pairs to a plurality of stations, a controller responsive to the state of said switching matrix for storing a plurality of connection signals, each of said plurality of connection signals corresponding to connection of a particular one of said plurality of trunk pairs to a particular one of said plurality of stations, the improvement of: a data distribution system comprising at least one data communication channel connecting said controller to at least two of said plurality of stations; address defining means associated with each of said plurality of stations for providing a unique station address for each of said plurality of stations connected to said data communication channel; said controller further comprising an addressing means for providing a plurality of addressing signals, one at a time, to said data communication channel, each of said addressing signals being followed in time by one of a plurality of data signals, said plurality of data signals corresponding to one of said plurality of connection signals; and a display and control means associated with each of said plurality of stations for causing a display to provide a visible indication corresponding to said one of a plurality of connection signals in response to said plurality of data signals; said display and control means comprising an addressable memory connected to said display responsive to a first particular one of said plurality of data signals to load a first address of said addressable memory, and further responsive to subsequent data signals of said plurality of data signals to load sequential addresses of said addressable memory.

Claim 2

Dependent Claim 275 words

In a private branch telephone exchange including a switching matrix for connecting a plurality of incoming trunk pairs to a plurality of stations, a controller responsive to the state of said switching matrix for storing a plurality of connection signals, each of said plurality of connection signals corresponding to connection of a particular one of said plurality of trunk pairs to a particular one of said plurality of stations, the improvement of: a data distribution system comprising at least one data communication channel connecting said controller to at least two of said plurality of stations; address defining means associated with each of said plurality of stations for providing a unique station address for each of said plurality of stations connected to said data communication channel; said controller further comprising an addressing means for providing a plurality of addressing signals, one at a time, to said data communication channel, each of said addressing signals being followed in time by one of a plurality of data signals, said plurality of data signals corresponding to one of said plurality of connection signals; and a display and control means associated with each of said plurality of stations for causing a display to provide a visible indication corresponding to said one of a plurality of connection signals in response to said plurality of data signals; said display and control means comprising an addressable memory connected to said display responsive to a first particular one of said plurality of data signals to load a first address of said addressable memory, and further responsive to subsequent data signals of said plurality of data signals to load sequential addresses of said addressable memory.

Claim 3

Dependent Claim 253 words

In a private branch telephone exchange including a switching matrix for connecting a plurality of incoming trunk pairs to a plurality of stations, a controller responsive to the state of said switching matrix for storing a plurality of connection signals, each of said connection signals corresponding to the connection of a particular one of said incoming trunk pairs to a particular one of said plurality of stations; means for connecting N×M stations to said private branch exchange, N and M each being positive integers, the improvement of a data distribution system comprising: M data communication channels; means for connecting N stations to each of said M data communication channels; said controller further comprising means for generating 2 N address signals for each of said M channels and for alternatively generating a contiguous sequence of display control signals, said sequence of said display control signals corresponding to one of said connection signals; a plurality of stations connected to each of said M communication channels, each of said stations comprising: a station identification means for providing a particular one of 2 N station addresses, a display for displaying visible indications corresponding to said sequence of display control signals, and display control means operatively connected to one of said M data communication channels for rendering said display responsive to said sequence of display control signals only when said sequence of display control signals is preceded by a particular one of said 2 N address signals corresponding to said particular one of said 2 N station addresses.

Claim 4

Dependent Claim 253 words

In a private branch telephone exchange including a switching matrix for connecting a plurality of incoming trunk pairs to a plurality of stations, a controller responsive to the state of said switching matrix for storing a plurality of connection signals, each of said connection signals corresponding to the connection of a particular one of said incoming trunk pairs to a particular one of said plurality of stations; means for connecting N×M stations to said private branch exchange, N and M each being positive integers, the improvement of a data distribution system comprising: M data communication channels; means for connecting N stations to each of said M data communication channels; said controller further comprising means for generating 2 N address signals for each of said M channels and for alternatively generating a contiguous sequence of display control signals, said sequence of said display control signals corresponding to one of said connection signals; a plurality of stations connected to each of said M communication channels, each of said stations comprising: a station identification means for providing a particular one of 2 N station addresses, a display for displaying visible indications corresponding to said sequence of display control signals, and display control means operatively connected to one of said M data communication channels for rendering said display responsive to said sequence of display control signals only when said sequence of display control signals is preceded by a particular one of said 2 N address signals corresponding to said particular one of said 2 N station addresses.

Claim 5

Dependent Claim 161 words

In a private branch telephone exchange including a plurality of stations, each of said stations including a hook switch, said hook switch being characterized by a status and being selectively operable to be placed in an off-hook status for rendering said station available to receive calls and alternately operable to be placed in an on-hook status for rendering said station unavailable to receive calls, the improvement of a controller for providing command signals to each of said plurality of stations; a status indicator means including a latching means responsive to a first one of said command signals for providing a first signal condition and responsive to a second one of said command signals for providing a second signal condition; said status indicator means being further responsive to said hook switch to provide an output signal condition upon detection of said first signal condition concurrent with said on-hook status and upon detection of said second signal condition concurrent with said off-hook status.

Claim 6

Dependent Claim 161 words

In a private branch telephone exchange including a plurality of stations, each of said stations including a hook switch, said hook switch being characterized by a status and being selectively operable to be placed in an off-hook status for rendering said station available to receive calls and alternately operable to be placed in an on-hook status for rendering said station unavailable to receive calls, the improvement of a controller for providing command signals to each of said plurality of stations; a status indicator means including a latching means responsive to a first one of said command signals for providing a first signal condition and responsive to a second one of said command signals for providing a second signal condition; said status indicator means being further responsive to said hook switch to provide an output signal condition upon detection of said first signal condition concurrent with said on-hook status and upon detection of said second signal condition concurrent with said off-hook status.

Claim 7

Dependent Claim 45 words

Apparatus as recited in claim 3 further comprising: a testing means for rendering said status indicator means responsive to said latching means and said status of said hook switch only upon an occurrence of a command signal from a particular subset of said command signals.

Claim 8

Dependent Claim 34 words

Apparatus as recited in claim 3 further comprising: a display associated with each of said stations for providing visible indications in response to each command signal of a particular subset of said command signals.

Claim 9

Dependent Claim 48 words

Apparatus as recited in claim 3 wherein each of said stations further comprises a transmitting means for providing communication signals from said station to said controller; and said transmitting means is responsive to provide a particular one of said communication signals in response to said output signal condition.

Claim 10

Dependent Claim 45 words

Apparatus as recited in claim 6 wherein each of said stations further comprises a keyboard comprising a plurality of switches; and said transmitting means is responsive to selective operation of each of said plurality of switches to provide a particular one of said communication signals.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1984-08-24	1985-02-23	1985-08-25	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1988-08-24	1989-02-23	1989-08-25	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1992-08-24	1993-02-23	1993-08-25	$7700.00	Window Closed / Lapsed

Data distribution system for private automatic branch exchange

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