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:
Nov. 27, 2001
Filed:
Mar. 15, 1999
Naofumi Adachi, Saitama, JP;
Teru Saitou, Tochigi, JP;
Akira Ootake, Tochigi, JP;
Yoshihito Takeshima, Tochigi, JP;
Ryouji Terada, Tochigi, JP;
Aiwa Co., Ltd., Tokyo, JP;
Abstract
This invention relates to a portable terminal equipment which receives intermittently a control channel transmitted from a cell station in a standby state. When the equipment shifts to the standby state, the equipment is brought into a receiving state to receive intermittently the control channel (PCH) for a set period of time W1 at every 1.2 seconds (ST,-ST,and ST,). In addition, the equipment judges the receiving state from judging information of the receiving state such as the intensity of the electric field in receiving time and the presence/absence of an error in the received data (ST,and ST,). In a power saving mode, when the equipment keeps on receiving the control channel in a good state for a set period of time while the equipment receives the control channel at every 1.2 seconds, the equipment is brought into a receiving state to receive the control channel at every 2.4 seconds (ST,-ST,). When the equipment does not receive the control channel in a good state while the equipment receives the control channel at every 2.4 seconds, the equipment shifts directly to the receiving state to receive the control channel at every 1.2 seconds (ST,and ST,). In the standby state, when the equipment keeps on receiving the control channel in a good state, the interval between each reception of the control channel becomes longer and thus the power consumption of the equipment is saved.