Radio frequency tag circuit and method for reading multiple tags
First Claim
1. An identification data transmitting circuit for controlling a transmission of an identification data in radio frequency identification tag, comprising:
- a clock circuit for respectively generating a series of clock signals for elements in said identification data transmitting circuit. an selecting circuit having a counter, a random numeral generator and a comparator for providing an enable signal by means of comparing outputs of said counter and said random numeral generator; and
a memory device electrically connected between said clock circuit and said selecting circuit for storing said identification data of radio frequency identification tag and receiving said enable signal of selecting circuit, so as to output said identification data.
1 Assignment
0 Petitions
Accused Products
Abstract
An identification data transmitting circuit for controlling a transmission of an identification data in radio frequency identification tag is provided. The transmitting circuit includes a clock circuit for respectively generating a series of clock signals for elements in the identification data transmitting circuit, an selecting circuit having a counter, a random numeral generator and a comparator for providing an enable signal by means of comparing outputs of the counter and the random numeral generator, and a memory device being electrically connected between the clock circuit and the selecting circuit for storing the identification data of radio frequency identification tag and receiving the enable signal of selecting circuit, so as to output the identification data.
-
Citations
22 Claims
-
1. An identification data transmitting circuit for controlling a transmission of an identification data in radio frequency identification tag, comprising:
-
a clock circuit for respectively generating a series of clock signals for elements in said identification data transmitting circuit. an selecting circuit having a counter, a random numeral generator and a comparator for providing an enable signal by means of comparing outputs of said counter and said random numeral generator; and
a memory device electrically connected between said clock circuit and said selecting circuit for storing said identification data of radio frequency identification tag and receiving said enable signal of selecting circuit, so as to output said identification data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. An identification data transmitting circuit for controlling a transmission of an identification data in radio frequency identification tag, comprising:
-
a memory device for storing the identification data of said radio frequency identification tag;
a counter for outputting a count value;
a random numeral generator for outputting a random number; and
a comparator electrically connected to said counter and an output terminal of said random numeral generator respectively for comparing said count value of said counter and said random number of said random numeral generator and providing an enable signal. - View Dependent Claims (15, 16, 17)
-
-
18. A method of identification data transmission for transmitting an identification data in a radio frequency identification tag, comprising steps of:
-
(a) providing a series of clock oscillation signals in response to an electromagnetic signal of a reader for said radio frequency identification tag;
(b) obtaining a random number, said random number is smaller than a maximum count value;
(c) counting in response to said series of oscillation signals obtaining a count value by means of, wherein said count value denotes a specific operating region; and
(d) when the count value and said random number in said operation region are equal, outputting said identification data. - View Dependent Claims (19, 20, 21, 22)
-
Specification