Patent EP0492852A2 successfully refreshed from Google Patents.
EP0492852A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Optical packet switch
Assignee: AT&T Inc
•
Filing: 1991-12-04
•
Granted: —
•
Expires: 2011-12-04
Abstract
Abstract An interconnect fabric is constructed from a plurality of fixed wavelength transmitters which are used to transmit arriving data packets through a star coupler, and a plurality of tunable receivers which tune to whatever frequency necessary to receive the desired data from the star coupler. A control network, constructed from a plurality of fixed wavelength receivers and a plurality of tunable transmitters, determines what frequencies the tunable receivers should tune to, and sends a signal to effectuate such tuning.
Inventors
- 👤 Kai Y. Eng
- 👤 Mark J. Karol
- 👤 Mario A. Santoro
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 22:47
CPC Classifications
H; H04; H04Q; H04Q11/00; H04Q11/0001; H04Q11/0062; H04Q11/0066
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
214 words
An interconnect fabric having inputs and outputs including a data star network including a plurality of inputs and outputs; a control star network including a plurality of inputs and outputs;; a plurality of fixed data transmitters; a plurality of tunable transmitters; and a plurality of receivers; CHARACTERIZED IN THAT each of said fixed data transmitters is arranged on a one-to-one basis to receive incoming data packets from an associated input of the interconnect fabric and being arranged on a one-to-one basis to transmit said received data packets to an input of said data star network; each of said tunable data receivers is arranged for receiving data packets on a one-to-one basis from said data star network outputs; each of said tunable transmitters is arranged on a one-to-one basis to receive incoming data packets from an associated input of the interconnect fabric and being coupled on a one-to-one basis to an input of said control star network and being adapted for transmitting requests for said tunable receivers to tune to prescribed frequencies; and each of said plurality of receivers is coupled on a one-to-one basis to said control star network outputs and adapted for receiving said requests and for causing up to a predetermined number of said tunable receivers to tune to a requested frequency.
Claim 2
Dependent Claim
214 words
An interconnect fabric having inputs and outputs including a data star network including a plurality of inputs and outputs; a control star network including a plurality of inputs and outputs;; a plurality of fixed data transmitters; a plurality of tunable transmitters; and a plurality of receivers; CHARACTERIZED IN THAT each of said fixed data transmitters is arranged on a one-to-one basis to receive incoming data packets from an associated input of the interconnect fabric and being arranged on a one-to-one basis to transmit said received data packets to an input of said data star network; each of said tunable data receivers is arranged for receiving data packets on a one-to-one basis from said data star network outputs; each of said tunable transmitters is arranged on a one-to-one basis to receive incoming data packets from an associated input of the interconnect fabric and being coupled on a one-to-one basis to an input of said control star network and being adapted for transmitting requests for said tunable receivers to tune to prescribed frequencies; and each of said plurality of receivers is coupled on a one-to-one basis to said control star network outputs and adapted for receiving said requests and for causing up to a predetermined number of said tunable receivers to tune to a requested frequency.
Claim 3
Dependent Claim
36 words
The interconnect fabric of claim 1 CHARACTERIZED IN THAT said data transmitters are optical transmitters, said receivers are optical receivers, said tunable transmitters are tunable optical transmitters and said tunable data receivers are tunable optical receivers.
Claim 4
Dependent Claim
21 words
The interconnect fabric of claims 1 or 2 CHARACTERIZED IN THAT said data star network comprises a plurality of star couplers.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.