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07-12-2009, 02:22 AM, (This post was last modified: 07-12-2009, 03:13 AM by ---.)
Technical Description

Specifications of µ-chip

* Simple Mechanism: 128-bit read only memory, no anti-collision control
* Super-micro Chip: 0.4 mm x 0.4mm
* Battery Less: The µ-chip a passive IC, that receives the microwave from the reader, generates electric power from the microwave, decodes its µ-chip ID and transmits it back to the reader.
* Unique ID (µ-chip ID): Each µ-chip stores unique 128-bit data in its ROM as its ID, to distinguish it from the others.
* Radio Frequency: 2.45 GHz
* Maxmum Communication Length: about 25 cm (with an external antenna)
(Reader: 300mW, 4 Pach Antenna, Circular Polarization)
* Response Time: 20msec


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* Interrogation: When the reader is activated by a terminal device (PC), it radiates microwave on to the µ-chip attached to a carrying article and the µ-chip returns its µ-chip ID to the reader. The carrying article may be a tag, a label or a customers products.
* Database Query: The terminal device authenticates the µ-chip ID and uses it to retrieve information from the database about the article carrying the µ-chip. The result of the query can be displayed on the terminal device or used by a software application.
* Database Construction: The database may be located at the site server or at the central server and stores attributes of the µ-chip carrying article. Information associated with the event of readout may be used to update the database.
* Linking: Linking each µ-chip ID to the carrying article is performed upon application of the µ-chip to it.
The attributes of the article at this point comprise the basic entry to the database. For efficient, automated linking process, consultation and engineering services are available.

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