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:
Jul. 16, 1996
Filed:
Nov. 08, 1994
J Mark Miller, Kirkland, WA (US);
David W Voth, Redmond, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
A mobile communications system in accordance with the invention comprises primary and secondary wireless digital communications networks. The system also comprises a wireless mobile messaging unit. The primary wireless digital communications network operates on a first communications channel using a reserved time slot protocol having discrete time slots reserved for data transmissions to the mobile messaging unit. The secondary wireless digital communications network operates on a second communications channel using a continuous downlink protocol under which data transmissions to the mobile messaging unit might take place at any time. The wireless mobile messaging unit has channel selection logic operatively connected to tune the mobile messaging unit to the first communications channel during the discrete time slots and to the second communications channel during other times. This allows the mobile unit to communicate concurrently with both of the primary and secondary digital communication networks, while requiring only a single radio receiver or transceiver.