COMMUNICATION SYSTEMS AND METHODS AND, IN PARTICULAR, TO A LOCATOR SYSTEM USING PORTABLE LOCATORS OF LOW ENERGY CONSUMPTION, AND TO A METHOD OF TRANSMISSION OF DATA TO MULTIPLE RECEPTORS IN A COMMON CHANNEL.

摘要

MULTIPLEXED COMMUNICATION METHODS BY TIME DIVISION PERFECTED FOR WIDE EXTENSION PAGE SYSTEM. A METHOD ADDS BITS OF CHECKING A CORRECTION CODE TO EACH DATA WORD AND INTERLOCKS THE WORDS IN THE TRANSMISSION. A SECOND METHOD TRANSMITS MULTIPLE MESSAGES TO ONE OR MORE PAGE RECEIVERS IN A SINGLE TIME SEGMENT. A THIRD METHOD INCREASES THE NUMBER OF INDIVIDUAL RECEIVERS THAT CAN ENTER THE SERVICE THROUGH A SINGLE PAGE SYSTEM. A FOURTH METHOD INCREASES THE NUMBER OF RECEIVERS THAT CAN ENTER THE SERVICE BY DISSOLVING THEM IN AN AREA BETWEEN SEVERAL SYSTEMS.