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:
Sep. 11, 2012
Filed:
Apr. 02, 2007
Albert Nardelli, Mountain View, CA (US);
Stephen E. Hilliker, San Jose, CA (US);
Timothy K. Brand, Cupertino, CA (US);
Joseph S. Chan, Los Gatos, CA (US);
Nikola Cargonja, San Carlos, CA (US);
Albert Nardelli, Mountain View, CA (US);
Stephen E. Hilliker, San Jose, CA (US);
Timothy K. Brand, Cupertino, CA (US);
Joseph S. Chan, Los Gatos, CA (US);
Nikola Cargonja, San Carlos, CA (US);
Savi Technology, Inc., Mountain View, CA (US);
Abstract
A tag can receive first and second wireless signals respectively defining first and second transmission fields that overlap. When the tag moves from the first field to the second field through the region of overlap, the apparatus transitions only once from recognizing the tag is in the first field to recognizing the tag is in the second field. According to another aspect, first and second signposts are supported at spaced locations in the region of a crane, and respectively transmit first and second wireless signals that are different, and that respectively define first and second fields of transmission. According to yet another aspect, a signpost transmits wireless signals having a transmission field, and a system senses positional information regarding a tag movable relative to the signpost, the system using the positional information to determine a location of the tag in relation to the transmission field.