US4644351A

3G,2G

Title

Two way personal message system with extended coverage

Application Number:

US19840608334

Publication Date:

17-02-1987

Current Assignee:

Family ID:

Application Date:

08-05-1984

Declaring Company:

Publication Country:

US

Priority Date:

08-05-1984

Title

Two way personal message system with extended coverage

Application Number:

US19840608334

Family ID:

Publication Country:

US

Publication Date:

17-02-1987

Application Date:

08-05-1984

Priority Date:

08-05-1984

Current Assignee:

Declaring Company:

Abstract  Abstract

A communications system for carrying messages via a radio channel between one central site of a plurality of central sites and a plurality of two-way remote data units is disclosed. Each central site has a radio coverage area and each remote unit has a unique address and association with one of the central sites. When a message addressed to one of the remote units is received in a central site a file of remote unit addresses is searched to find the location and central site association of the remote unit to which the message is addressed. If an address match is found indicating that the remote transceiver is in the coverage area of the message-receiving central site the addressed message is stored and transmitted in that site. If an address match is found indicating that the remote transceiver is in another central site the addressed message is conveyed to that site for transmission.

Note:

The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)

The information in grey was provided by the patent holder

The information in purple was extracted from the FrandAvenue

Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.

Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.

Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.

Family member:related patents or applications that share a common priority or original filing.