United States Patent  [ii] Patent Number: 4,975,694
McLaughlin et al.  Date of Patent: Dec. 4, 1990
 PAGING RECEIVER WITH VARIABLE COLOR INDICATORS
 Inventors: Kevin T. McLaughlin, Lake Worth;
Michael J. DeLuca, Boca Raton,
both of Fla.
 Assignee: Motorola, Inc., Schaumburg, 111.
 Appl. No.: 322,876
 Filed: Mar. 14, 1989
 Int. C1.5 H04Q 7/00
 U.S. CI 340/825.44; 340/701;
 Field of Search 340/311.1, 825.44, 701,
340/781, 782, 702, 703, 716, 784, 815.03, 815.1,
 References Cited
U.S. PATENT DOCUMENTS
4,704,608 11/1987 Sato et al 340/311.1
4,851,829 7/1989 DeLuca et al 340/825.44
FOREIGN PATENT DOCUMENTS
51-158343 11/1976 Japan .
RC101 Numeric Display Radio Paging Receiver Copy
A paging receiver has an indicator capable of illluminating in one of a plurality of colors. The color of illumination is selected in response to the address received by the pager. The indicator identifies the address by the color illuminated. The indicator also indicates weather a message is protected, read, about to be protected or about to be deleted by the color and color sequence of the indicator. The color indicator also indicates if the paging receiver is about to be turned off. The indicator may also serve as a back-light for a display when the paging receiver includes a display. Signals within the information to be displayed may change the color or change the intensity of the back-light, these signals may also turn the back-light off or on.
13 Claims, 6 Drawing Sheets