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:
May. 09, 2000
Filed:
Oct. 10, 1997
Jean-Noel Divoux, La Chaux-de-Fonds, CH;
EM Microelectronic-Marin SA, Marin, CH;
Abstract
The present invention concerns a system 1 supplied by an electric power source, and able to operate in 'sleep' mode, this system including a system clock 12, oscillation detection means 13 for monitoring the activity of the system clock, and means 16 for reactivating the system when the latter is in 'sleep' mode. This system is characterised in that the reactivating means are internal to the system, and in that they are arranged to form, as soon as the system passes into 'sleep' mode, an autonomous time base, to reactivate this system at the end of a predetermined time interval and, when the system is not in 'sleep' mode, to fulfil a different function to that of time base and reactivation. An advantage of the reactivating means of such a system lies in the fact that they can operate only with a current of the order of 1 nA.