Identification card
First Claim
1. Identification card, comprising a card body, an integrated semiconductor circuit being mechanically inserted and protected in said card body for storing data to be read-out and read-in in changed form, receiving antenna means, a rectifier circuit connected to said receiving antenna means, a filter circuit connected between said rectifier circuit and said integrated semiconductor circuit, said rectifier and filter circuits generating a supply voltage for said integrated semiconductor circuit from an energy field, a microwave transmitting antenna connected to said integrated semiconductor circuit, and a transmitter connected to said transmitting antenna.
4 Assignments
0 Petitions
Accused Products
Abstract
Identification card, including a card body, an integrated semiconductor circuit being mechanically inserted and protected in the card body for storing data to be read-out and read-in in changed form, a receiving antenna device, a rectifier circuit connected to the receiving antenna device, a filter circuit connected between the rectifier circuit and the integrated semiconductor circuit. The rectifier and filter circuits generate a supply voltage for the integrated semiconductor circuit from an energy field, a microwave transmitting antenna connected to the integrated semiconductor circuit, and a transmitter connected to the transmitting antenna.
118 Citations
7 Claims
- 1. Identification card, comprising a card body, an integrated semiconductor circuit being mechanically inserted and protected in said card body for storing data to be read-out and read-in in changed form, receiving antenna means, a rectifier circuit connected to said receiving antenna means, a filter circuit connected between said rectifier circuit and said integrated semiconductor circuit, said rectifier and filter circuits generating a supply voltage for said integrated semiconductor circuit from an energy field, a microwave transmitting antenna connected to said integrated semiconductor circuit, and a transmitter connected to said transmitting antenna.
Specification