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:
Oct. 21, 2008
Filed:
Mar. 01, 2004
Harry K Smith, Hayward, CA (US);
Jon H Peterson, Larkspur, CA (US);
Mark Hughes, Oakland, CA (US);
Anthony Kostichka, Wilmington, DE (US);
Brian Bostwick, Wayne, PA (US);
Harry K Smith, Hayward, CA (US);
Jon H Peterson, Larkspur, CA (US);
Mark Hughes, Oakland, CA (US);
Anthony Kostichka, Wilmington, DE (US);
Brian Bostwick, Wayne, PA (US);
OSIsoft, Inc., San Leandro, CA (US);
Abstract
A data retrieval engine accesses data streams ('tags') from data sources. Each data stream preferably includes a plurality of values for a tag and a time each value was recorded. A user accesses the web server to request real-time performance data for a plurality of the tags. After authenticating the user, the data retrieval engine sends values for tags the user is authorized to view to the web server, for delivery to the browser. The data retrieval engine tracks which values were sent to the web server for each user and when. When the data retrieval engine receives a request for a specific user, only data not previously provided to the web server for that user is provided for the current request. In this manner, the user does not miss any events, and is provided substantially in real time with a complete set of data for requested tags.