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:
Jul. 19, 2016
Filed:
Jun. 25, 2013
Lianhe Guo, Tomball, TX (US);
Lianhe Guo, Tomball, TX (US);
HALLIBURTON ENERGY SERVICES, INC., Houston, TX (US);
Abstract
An apparatus includes a power supply for producing power. The apparatus further includes a first processor powered by the power supply. The apparatus further includes a first time-storage circuit coupled to the first processor. The first processor periodically reads a first-real-time-clock time from a first real-time clock and stores the first-real-time-clock time in the first time-storage circuit. The apparatus further includes a first power-monitoring circuit coupled to the first processor. The first power-monitoring circuit stores energy when a first power-being-monitored is producing power and dissipates energy at a first predictable rate when the first power-being-monitored is not producing power. The first processor is programmed to, upon recovery from a reset, read from the first power-monitoring circuit the energy stored by the first power-monitoring circuit. The first processor is further programmed to determine from the first stored energy reading a first power-out length of time that the first power-being-monitored was not producing power. The first processor is further programmed to determine that the first power-out length of time is less than a first threshold length of time. The first processor is further programmed to set a first processor time to the first-real-time-clock time stored in the first time-storage circuit plus the first power-out length of time.