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. 19, 2002
Filed:
Mar. 18, 1999
Teruyuki Motohashi, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
In a mobile data terminal having an infrared communication capability, a battery capacity detection determines whether or not the remaining capacity of a battery is smaller than a preselected threshold value. If the remaining capacity is greater than the threshold value, a data processing causes a drive current control to feed a first preselected drive current to a light emitting device included in an infrared communication function . If the remaining capacity is smaller than the threshold value, the data processing causes the drive current control to feed a second preselected drive current smaller than the first drive current to the light emitting device . As a result, when the remaining battery capacity is small, a distance which infrared rays reach is reduced in order to maintain the infrared communication capability. A decrease in the above distance is reported to the user of the data terminal via an output for thereby insuring convenient use.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile