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. 25, 1993
Filed:
Mar. 11, 1991
Thaddeus A Kozlowski, Chicago, IL (US);
Daniel J McDonald, Hanover Park, IL (US);
Guy G Romano, Melrose Park, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
An enhanced talkgroup scanning algorithm is provided. This algorithm provides an efficient scan function when a unit scan list contains a mixture of trunked talkgroups and conventional channels. This is accomplished by adding a new scanning algorithm for conventional priority groups, and by enhancing the trunking talk group scanning cycle. A novel scanning algorithm for conventional priority groups is used to decrease the audio holes in trunking calls when looking back at a priority conventional channel. When a unit is active on a low priority trunking call and goes over to the priority conventional channel to check for activity, several new steps are taken into consideration when the unit goes back to the trunked system/active trunked call. Based on whether there has been activity on the priority channel, the unit will immediately return to the old voice channel (unsquelched) or revert to the control channel. A novel scanning algorithm for talk groups allows a unit to revert to scanning the conventional groups in the list quicker if there is no activity on the trunked system for any of the trunking groups in the list.