# US 8,542,695 B1 · System and method for storing/caching, searching for, and accessing data

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- Number: US 8,542,695 B1
- Document ID: US8542695B1
- Status: Granted
- Kind: B1
- Application number: 13/410,787
- Filed: 2012-03-02
- Granted: 2013-09-24
- Earliest claimed: 1999-10-28
- Assignees: Lightwave Systems, Inc.
- Applicants: Bruce D. Melick; David M. Snyder; Leslie D. Baych; Gregory P. Probst; Philip T. Kennedy
- Inventors: Bruce D. Melick; David M. Snyder; Leslie D. Baych; Gregory P. Probst; Philip T. Kennedy
- Web page: https://patentgrep.com/patent/US8542695B1

## CPC

- H04L 47/28: in relation to timing considerations
- H04B 1/7163: using impulse radio
- H04L 1/08: by repeating transmission, e.g. Verdan system {(H04L1/1858 and H04L1/189 take precedence)}
- H04L 12/437: Ring fault isolation or reconfiguration {(for SDH/SONET ring networks H04J3/085)}
- H04L 49/15: Interconnection of switching modules
- H04N 19/66: involving data partitioning, i.e. separation of data into packets or partitions according to importance
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04B: TRANSMISSION
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## Abstract

A system for persistently maintaining data using a network for data packets is provided. The system includes a transmission medium associated with the network, a plurality of switches operatively connected to the transmission medium. Each switch has an intelligent network controller adapted for delivering the data packets to a device operatively connected to the intelligent network controller in response to a request for the data packets from the device and further adapted for re-transmitting unexpired data packets over the network.

## Claims

### Claim 1

A system for persistently maintaining data using a network for data packets, comprising:
a transmission medium associated with the network;
a plurality of switches operatively connected to the transmission medium, each switch having an intelligent network controller adapted for delivering the data packets to a device operatively connected to the intelligent network controller in response to a request for the data packets from the device and for determining if the data packets are unexpired based on an expiration property of the data packets and adapted for re-transmitting unexpired data packets over the network; and
wherein the expiration property of the data packets specifies and amount of time the data packets are persistently maintained on the network sufficient to allow the data packets to be stored, accessed, and searched while reverberating the system.

### Claim 2

A system for persistently maintaining data using a network for data streams, comprising:
a transmission medium associated with the network;
a plurality of switches operatively connected to the transmission medium, each switch having an intelligent network controller adapted for delivering at least one of the data streams to a device operatively connected to the intelligent network controller in response to a request for the at least one of the data streams from the device and for determining if the data stream is unexpired based on an expiration property of the data stream and adapted for re-transmitting, unexpired data streams over the network;
wherein the expiration property of the data stream specifies an amount of time the data stream is persistently maintained on the network sufficient to allow the data stream to be stored, accessed, and searched while reverberating on the system.

### Claim 3

A method for storing data, comprising:
associating an expiration property with the data;
continuously transmitting the data across a network;
receiving the data by at least one device associated with a transmission media, each of the at least one device having an identity;
the expiration property being independent of the identity of each of the at least one device;
wherein the expiration property is specified by a XML tag and specifies an amount of time the data is persistently maintained on the network sufficient to allow the data to be stored, accessed, and searched while reverberating the network.

### Claim 4 (depends on 3)

The method of claim 3 wherein the data is streamed data.

### Claim 5 (depends on 3)

The method of claim 3 wherein the data is packetized data.

### Claim 6 (depends on 3)

The method of claim 3 wherein the expiration property includes a time constraint.

### Claim 7 (depends on 3)

The method of claim 3 wherein the expiration property includes a geographical location constraint.