Patent ID: 8301134
Filing Date: 2012-10-30
Classification: H04M,Y02D

Abstract:
1. A main device of a cordless telephone system configured to perform communication with at least one additional device, each of the at least one additional device comprising: a search unit configured to search intermittently for a radio wave generated from the main device; and a search stopping unit configured to stop execution of the search unit after a state in which the search unit does not receive a radio wave continues for a predetermined time, wherein the main device comprises: wherein the search unit is configured to execute searches a predetermined number of times within the predetermined time, and wherein the temporary returning unit is configured to recover temporarily the operation of the radio wave generating unit to generate a radio wave while the at least one additional device executes a search corresponding to the predetermined number-th search, which is counted from the stoppage of the operation of the radio wave generating unit by the operation stopping unit or the re-stop unit, by using the search unit.