Determination of an initial launch time in a simulcast communica

Details Determination of an initial launch time in a simulcast communica Determination of an initial launch time in a simulcast communica

1996-02-29

1997-10-14

Eisenzopf, Reinhard J.

Telecommunications

Transmitter and receiver at separate stations

Single message via plural carrier wave transmission

455 561, 455 676, H04B 100

Patent

active

056781938

ABSTRACT:
A simulcast controller 201 receives a communication request at a current time. A preliminary launch time equivalent to the sum of the current time plus a predetermined offset value (401) is calculated along with a difference between the preliminary launch time and a transmission conclusion time (402). When the difference is not greater than a sum of a predetermined dekey interval (404) and a predetermined keyup interval (408), a supplemental offset value (406-407) is added to the preliminary launch time to produce the initial launch time. Alternatively, upon termination of a previous communication (600), a period of time equivalent to the sum of the predetermined dekey interval (602) and the predetermined keyup interval (603) is initiated. If the current time is earlier than an expiration time (604), the predetermined offset value (601) and the supplemental offset value (606-607) are added to the current time to produce the initial launch time.

REFERENCES:
patent: 4506384 (1985-03-01), Lucas
patent: 5483671 (1996-01-01), Helm et al.
patent: 5485632 (1996-01-01), Ng et al.
patent: 5530915 (1996-06-01), Shaughnessy et al.

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