Data delivery system using local and remote communications

• US 7,814,212 B1
• Filed: 06/08/2007
• Issued: 10/12/2010
• Est. Priority Date: 04/28/2000
• Status: Expired due to Fees

• Current Assignee: Dr. Hark C. Chan
• Original Assignee: Dr. Hark C. Chan
• Inventors: Chan, Hark C.
• Primary Examiner(s): Nawaz; Asad M
• Assistant Examiner(s): Nano; Sargon N
• Application Number:
  US11/760,088
• Time in Patent Office: 1,222 Days
• Field of Search: 709202-207, 709213-219, 709223-245, 713/2, 713/153, 713/168, 713/169, 713/176, 713/182, 713/184, 380/28, 380/255, 380/259, 380/324
• US Class Current: 709/227
• CPC Class Codes: H04L 12/6418 Hybrid transport

Abstract

Non-deterministic digital content can be generated frequently and automatically. The content can then be delivered to another device using local and remote communication channels. One type of digital content is access code for accessing a host (which, in many cases, is located in the home or office of a user). There is no need for the user to remember any number or perform any special operations. In one embodiment of the present invention, the host contains information or devices that the user wishes to access remotely using a portable unit. Either the host or portable unit (the originator) generates non-deterministic access codes at regular time intervals (e.g., once a day) using a random number generator. The non-deterministic codes are delivered to the counterpart (host or portable unit) of the originator using local communication. Because the user is likely to visit his/her home or office frequently, the codes can be updated frequently. When the user is far away from the host, he/she can use the codes stored in the portable unit to access the host.

Claims

1. A communication system comprising:

a set of communication devices comprising at least a first and a second communication device, the first communication device having a wide area interface, the second communication device having a radio frequency receiver, each of the first and the second communication devices having a local interface that can communicate in a distance substantially shorter than that of the wide area interface;

one of the first and the second communication devices generating a non-deterministic digital content and delivering using the local interfaces of the first and the second communication devices the non-deterministic digital content to another of the first and the second communication devices;

a remote site located remotely from the first and the second communication devices, the remote site having a wide area interface that can receive the non-deterministic digital content and a first set of digital data from the wide area interface of the first communication device, subsequently the remote site transmitting radio frequency signal encoded with a second set of digital data, the second set of digital data comprising at least the non-deterministic digital content and the first set of digital data; and

the second communication device receiving the radio frequency signal using the radio frequency receiver and recovering the first set of digital data and non-deterministic digital content, the second communication device using the non-deterministic digital content to verify that the first set of digital data is sent by the first communication device.

2. The communication system of claim 1 wherein the non-deterministic digital content comprises a digital code.

3. The communication system of claim 1 wherein the non-deterministic digital content comprises an algorithm.

4. The communication system of claim 1 wherein the one of the first and the second communication devices can detect a presence of the another of the first and the second communication devices and delivers the non-deterministic digital content without user action.

5. The communication system of claim 1 wherein at least one of the first and the second communication devices comprises a cellular phone.

6. The communication system of claim 1 wherein the first communication device comprises an identification code, and wherein the remote site receives the identification code from the first communication device.

7. The communication system of claim 1 wherein the remote site comprises a broadcast station for broadcasting the radio frequency signal to the set of communication devices.

8. The communication system of claim 1 wherein the local interfaces of the first and the second communication devices comprise wireless interfaces.

9. The communication system of claim 1 wherein the one of the first and the second communication devices periodically attempts to establish local communication with the another of the first and the second communication devices if the delivering of the non-deterministic digital content is unsuccessful.

10. The communication system of claim 1 wherein at least one member of the set of communication devices contains a component for communicating with an appliance, and wherein the first set of digital data contains a command for the appliance.