The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 17, 1994
Filed:
Nov. 05, 1990
Richard A Comroe, Dundee, IL (US);
Gary W Grube, Palatine, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
In a geographic region that contains a trunking communication system and a cellular communication system, wherein the coverage area of each system substantially overlaps, a method that transfers a private call from the trunking communication system to the cellular communication is disclosed. When a communication unit initiates a private call in the trunking communication system, it transfers its affiliation from the trunking communication system to the cellular communication system. Once affiliated with the cellular communication, the private call is placed to the second communication unit. The trunking communication system detects the private call and instructs a second communication unit to transfer its affiliation to the cellular communication system. Once both communication units are affiliated with the cellular communication system, the private call is conducted. Once the private call ends, both communication units transfer their affiliation back to the trunking communication system.