CA2481912A1 - Systems and methods for proximity control of a barrier - Google Patents

Systems and methods for proximity control of a barrier Download PDF

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Publication number
CA2481912A1
CA2481912A1 CA002481912A CA2481912A CA2481912A1 CA 2481912 A1 CA2481912 A1 CA 2481912A1 CA 002481912 A CA002481912 A CA 002481912A CA 2481912 A CA2481912 A CA 2481912A CA 2481912 A1 CA2481912 A1 CA 2481912A1
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CA
Canada
Prior art keywords
barrier
receiving device
transmitter
systems
methods
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002481912A
Other languages
French (fr)
Other versions
CA2481912C (en
Inventor
Gallen Ka Leung Tsui
Philip Y. W. Tsui
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
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Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US10/875,343 external-priority patent/US7088265B2/en
Application filed by Individual filed Critical Individual
Priority to CA002481912A priority Critical patent/CA2481912C/en
Priority to CA002501207A priority patent/CA2501207C/en
Publication of CA2481912A1 publication Critical patent/CA2481912A1/en
Application granted granted Critical
Publication of CA2481912C publication Critical patent/CA2481912C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

Disclosed is a system and method for proximity control of a barrier comprising a stationary wireless signal receiving device and a mobile transmitting device. The wireless signal receiving device may monitor at least one transmitting device within a predetermined coverage area and may be a radio frequency receiver or a spread spectrum receiver located near the barrier. In one embodiment, the transmitter device emits a control signal that is received by the receiving device when the transmitter is within a reception range. In one embodiment, the control signal includes transmitter identification information, directional information and position information. In another embodiment, the barrier is closed only after a predetermined delay has lapsed.
CA002481912A 2004-03-18 2004-09-16 Systems and methods for proximity control of a barrier Active CA2481912C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA002481912A CA2481912C (en) 2004-03-18 2004-09-16 Systems and methods for proximity control of a barrier
CA002501207A CA2501207C (en) 2004-03-18 2005-03-18 Systems and methods for proximity control of a barrier

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US55472504P 2004-03-18 2004-03-18
US60/554,725 2004-03-18
US10/875,343 2004-06-23
US10/875,343 US7088265B2 (en) 2004-03-18 2004-06-23 Systems and methods for proximity control of a barrier
CA2471975 2004-06-23
CA002471975A CA2471975C (en) 2004-03-18 2004-06-23 Systems and methods for proximity control of a barrier
CA002481912A CA2481912C (en) 2004-03-18 2004-09-16 Systems and methods for proximity control of a barrier

Publications (2)

Publication Number Publication Date
CA2481912A1 true CA2481912A1 (en) 2005-09-18
CA2481912C CA2481912C (en) 2008-07-08

Family

ID=35006138

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002481912A Active CA2481912C (en) 2004-03-18 2004-09-16 Systems and methods for proximity control of a barrier

Country Status (1)

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CA (1) CA2481912C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130326595A1 (en) * 2011-01-07 2013-12-05 Gary L. Myers System and Method for Access Control Via Mobile Device
CN109505484A (en) * 2017-09-15 2019-03-22 比亚迪股份有限公司 The control method and device of vehicle back door

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130326595A1 (en) * 2011-01-07 2013-12-05 Gary L. Myers System and Method for Access Control Via Mobile Device
US9781599B2 (en) * 2011-01-07 2017-10-03 Delphian Systems, LLC System and method for access control via mobile device
CN109505484A (en) * 2017-09-15 2019-03-22 比亚迪股份有限公司 The control method and device of vehicle back door
CN109505484B (en) * 2017-09-15 2020-05-22 比亚迪股份有限公司 Control method and device for vehicle back door

Also Published As

Publication number Publication date
CA2481912C (en) 2008-07-08

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