公开(公告)号：MY105265A

公开(公告)日：1994-09-30

申请号：MYPI19900248

申请日：1990-02-14

Applicant: MOTOROLA INC

Inventor： DAVIS WALTER LEE ,  HEROLD BARRY WAYNE ,  ERHART RICHARD ALEXANDER

IPC: G06F7/02 ,  G06F12/00 ,  G06F11/00 ,  H04Q9/08 ,  H04W88/02

Abstract: AN APPARATUS FOR DETERMINING IF A RECEIVED BINARY WORD CORRESPONDS TO THE TRUE OR COMPLEMENT VERSION OF A STORED BINARY WORD INCLUDES MEANS (24, 26, 28, 30) FOR SERIALLY MULTIPLEXING THE BITS OF EACH BINARY WORD TO THE INPUTS OF AN EXCLUSIVE OR GATE (36). THE EXCLUSIVE OR GATE (36) GENERATES A LOGICAL HIGH SIGNAL EACH TIME A MISMATCH OCCURS. THESE SIGNALS ARE APPLIED DIRECTLY TO AN ERROR COUNTER (38) AND, AFTER INVERSION, TO A MATCH COUNTER (42). THE CONTENTS OF THE ERROR COUNTER (38) AND MATCH COUNTER (42) ARE COMPARED TO A STORED THRESHOLD NUMBER (44). A FIRST SIGNAL IS GENERATED IF THE CONTENTS OF THE ERROR COUNTER (38) EXCEEDS THE THRESHOLD. A SECOND SIGNAL IS GENERATED IF THE CONTENTS OF THE MATCH COUNTER (42) EXCEEDS THE THRESHOLD. UPON THE OCCURRENCE OF BOTH SIGNALS, THE SERIAL COMPARISON PROCESS IS TERMINATED. (FIG. 2)

公开(公告)号：AT139354T

公开(公告)日：1996-06-15

申请号：AT90904999

申请日：1990-03-09

Applicant: MOTOROLA INC

Inventor： ERHART RICHARD ALEXANDER ,  DELUCA JOAN SABIN ,  MCLAUGHLIN KEVIN THOMAS

IPC: G06F11/10 ,  H03M13/00 ,  H03M13/15 ,  H04L1/00 ,  H04Q7/16

Abstract: A paging receiver receiving message information having one of a plurality of (BCH) code word structures has a programmable error correcting apparatus for correcting bit errors within the message information. The programmable error correcting apparatus may be configured in response to identifying a signalling system and the code word structure corresponding to ther signalling system, or in response to changes in the code word structure within the message. A simplified error correcting apparatus may correct a single bit error within a code word structure. The programamble error correcting apparatus is capable of correcting any two bit error combination within the code word structure and contains sequential and combinational logic circuits. The programmable error correcting apparatus is integrated together with a microprocessor on a monolithic integrated circuit.

公开(公告)号：IN176548B

公开(公告)日：1996-07-13

申请号：IN85DE1990

申请日：1990-01-31

Applicant: MOTOROLA INC

Inventor： ERHART RICHARD ALEXANDER ,  DAVIS WALTER LEE ,  HEROLD BARRY WAYNE

IPC: H04B5/00