IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
|
| 국제특허분류(IPC7판) |
|
| 출원번호 |
US-0650490
(1991-02-05)
|
| 우선권정보 |
DE-4003410 (1990-02-05) |
|
발명자
/ 주소 |
- Stobbe Anatoli (Steinradweg 3 D-3013 Barsinghausen 1 DEX) Herrmann Wilfried (Gehrden DEX)
|
| 출원인 / 주소 |
- Stobbe
- Anatoli (Barsinghausen DEX 05)
|
| 인용정보 |
피인용 횟수 :
180 인용 특허 :
0 |
초록
▼
A read/write device includes a transmitter for producing an RF signal and a modulator coupled to said transmitter for modulating the RF signal and, finally a data receiver for receiving RF data signals from a portable microchip. The microchip includes a resonant circuit tuned to the RF frequency of
A read/write device includes a transmitter for producing an RF signal and a modulator coupled to said transmitter for modulating the RF signal and, finally a data receiver for receiving RF data signals from a portable microchip. The microchip includes a resonant circuit tuned to the RF frequency of the read/write transmitter and a receiver that is coupled to the resonant circuit for detecting the RF signal. There is also provided a charging capacitor capable of storing the electrical energy from the RF signal so that the microchip can be powered during pulse pauses of the RF signal. The microchip includes a memory circuit for storing the identification code of the microchip, and a code generator that is coupled to the memory circuit for generating an RF signal that is modulated with the identification data. A switching element that couples the resonant circuit to the code generator de-tunes the resonant circuit when the identification data is transmitted back to the read/write device. The same resonant circuit also serves to field program the memory circuit of the microchip by receiving pulse pause modulation signals (PPM) of the RF carrier signal thus allowing the identification code of the microchip to be altered by the read/write device.
대표청구항
▼
The combination of a portable, field-programmable detection microchip for storing identification data for identifying persons, animals or objects, and a read/write device for accessing the data stored in the microchip, when brought within RF coupling proximity thereof, the combination defining an id
The combination of a portable, field-programmable detection microchip for storing identification data for identifying persons, animals or objects, and a read/write device for accessing the data stored in the microchip, when brought within RF coupling proximity thereof, the combination defining an identification system comprising: a read/write device including a transmitter for producing an RF field, a pulse pause modulator coupled to said transmitter for modulating the RF field during the field programming mode, said pulse pause modulator providing different function modes, such as band rate, single-phase modulation, dual-phase modulation, field synchronous and field-asynchronous data transmission, binary format, biphase format, FSK format, FSK frequencies, memory size, read/write mode, read-only mode, said modes being transmitted by said read/write device to the detection microchip via the RF field and a data receiver for receiving RF data signals from the detection microchip; and a detection microchip including a resonant circuit tuned to the frequency of said RF field, a charging capacitor coupled to said resonant circuit for storing electrical energy during the occurrence of the RF field, and powering said microchip during pulse pauses of the RF field, a signal receiver coupled to said resonant circuit for decoding the modulated RF field, including a decoder circuit, a memory circuit for storing the identification data of said microchip, a code generator coupled to said memory circuit for generating an RF signal modulated with the identification data, an oscillator coupled to both said code generator and said decoder circuit for providing a field-independent time reference to said detection microchip, and switching means coupled to said resonant circuit and said code generator for coupling the identification data from said code generator to said resonant circuit, said switching means changing the impedance of said resonant circuit during the transmission of the identification data, wherein the same resonant circuit is used to provide the energy for the detection microchip, further to transmit data to the read/write device and to receive commands and data for reprogramming from the read/write device.
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