CA2266337C - Systeme d'etiquettes avec des caracteristiques anti-collision - Google Patents
Systeme d'etiquettes avec des caracteristiques anti-collision Download PDFInfo
- Publication number
- CA2266337C CA2266337C CA002266337A CA2266337A CA2266337C CA 2266337 C CA2266337 C CA 2266337C CA 002266337 A CA002266337 A CA 002266337A CA 2266337 A CA2266337 A CA 2266337A CA 2266337 C CA2266337 C CA 2266337C
- Authority
- CA
- Canada
- Prior art keywords
- bit
- slave
- master
- time
- identification number
- 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.)
- Expired - Lifetime
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
- G08B13/24—Electrical actuation by interference with electromagnetic field distribution
- G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
- G08B13/2465—Aspects related to the EAS system, e.g. system components other than tags
- G08B13/2488—Timing issues, e.g. synchronising measures to avoid signal collision, with multiple emitters or a single emitter and receiver
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/0008—General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10019—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers.
- G06K7/10029—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers. the collision being resolved in the time domain, e.g. using binary tree search or RFID responses allocated to a random time slot
- G06K7/10039—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers. the collision being resolved in the time domain, e.g. using binary tree search or RFID responses allocated to a random time slot interrogator driven, i.e. synchronous
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/007—Details of data content structure of message packets; data protocols
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
- G08B25/10—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using wireless transmission systems
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Electromagnetism (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Computer Networks & Wireless Communication (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Computer Security & Cryptography (AREA)
- Automation & Control Theory (AREA)
- General Health & Medical Sciences (AREA)
- Mobile Radio Communication Systems (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002266337A CA2266337C (fr) | 1999-03-23 | 1999-03-23 | Systeme d'etiquettes avec des caracteristiques anti-collision |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002266337A CA2266337C (fr) | 1999-03-23 | 1999-03-23 | Systeme d'etiquettes avec des caracteristiques anti-collision |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2266337A1 CA2266337A1 (fr) | 2000-09-23 |
CA2266337C true CA2266337C (fr) | 2004-06-08 |
Family
ID=29588607
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002266337A Expired - Lifetime CA2266337C (fr) | 1999-03-23 | 1999-03-23 | Systeme d'etiquettes avec des caracteristiques anti-collision |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2266337C (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7716208B2 (en) | 2003-11-07 | 2010-05-11 | Alien Technology Corporation | RFID handshaking |
US8102244B2 (en) | 2003-08-09 | 2012-01-24 | Alien Technology Corporation | Methods and apparatuses to identify devices |
US8279047B2 (en) | 2001-10-09 | 2012-10-02 | Alien Technology Corporation | Methods and apparatus for anti-collision for radio frequency communication |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6988667B2 (en) | 2001-05-31 | 2006-01-24 | Alien Technology Corporation | Methods and apparatuses to identify devices |
FR2834811B1 (fr) * | 2002-01-17 | 2004-04-16 | A S K | Procede d'anti-collision d'elements a identifier par un ordinateur hote |
-
1999
- 1999-03-23 CA CA002266337A patent/CA2266337C/fr not_active Expired - Lifetime
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8279047B2 (en) | 2001-10-09 | 2012-10-02 | Alien Technology Corporation | Methods and apparatus for anti-collision for radio frequency communication |
US8102244B2 (en) | 2003-08-09 | 2012-01-24 | Alien Technology Corporation | Methods and apparatuses to identify devices |
US8742899B2 (en) | 2003-08-09 | 2014-06-03 | Alien Technology Corporation | Methods and apparatuses to identify devices |
US7716208B2 (en) | 2003-11-07 | 2010-05-11 | Alien Technology Corporation | RFID handshaking |
US8768952B2 (en) | 2003-11-07 | 2014-07-01 | Alien Technology Corporation | Methods and apparatuses to identify devices |
US9483671B2 (en) | 2003-11-07 | 2016-11-01 | Ruizhang Technology Limited Company | Methods and apparatuses to identify devices |
Also Published As
Publication number | Publication date |
---|---|
CA2266337A1 (fr) | 2000-09-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |
Effective date: 20190325 |