US4843612A

3G,2G

Title

Method for jam-resistant communication transmission

Application Number:

US19810274142

Publication Date:

27-06-1989

Current Assignee:

Family ID:

Application Date:

08-06-1981

Publication Country:

US

Priority Date:

23-06-1980

Declaring Company:

Abstract  Abstract

A method for jam-resistant transmission speech signals by radio which have been processed via vocoders utilizing spread spectrum multiple access modulation (SSMA) or rapid frequency hopping (FH) provides with respect to the danger of an inherent jamming brought about when a great number of stations simultaneously use the same frequency band for the same radio channel frequency group activation and deactivation of the transmitter and receiver at the rate of the internal system frame clock pulse during a frame clock pulse period only when useful information is present. In this manner in the case of simplexcommunication connections on the average approximately 40% and in the case of duplex operation more than 60% of the transmitting time can be saved and hence the inherent jamming of the system can be reduced in a corresponding fashion.

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.