摘要:
The invention concerns a method for partial amplitude modulation of a carrier wave between 8% and 14%, the carrier wave being emitted by a contactless transceiver device (10) designed to remotely exchange data with a contactless portable object, the method comprising: a) delivering two digital radiofrequency signals Tx1 (20) and Tx2 (22), b) phase shifting the second signal Tx2 by 180 degrees in relation to the first signal Tx1 when there is no information to be transmitted (idle state), c) phase shifting the two Tx2 signals in relation to Tx1 or Tx1 in relation to Tx2 by an additional angle φ when there is information to be transmitted (modulated state), d) having the digital signals pass through a filtering and adapting stage (13), e) adding, at the antenna, the first and second filtered and phase-modulated signals (Tx1f and Tx2f) and obtaining an amplitude modulated resultant radiated signal.
摘要:
A multilayer contactless smartcard 10 including an electronic chip embedded in the card, the chip being connected to an antenna 22 printed on a carrier layer 20, and two card bodies, one on each side of the carrier, each including at least one plastic layer 40 and 60. The antenna carrier is opaque and includes a first cut-out forming a void 23 filled with a transparent plastic; and the plastic layers of the two card bodies each include a second cut-out forming two identical voids 43 and 63 the outlines of which superimpose, in order to make a transparent zone appear in the thickness of the card, forming a transparent logo in the shape of the cut-out. A process for manufacturing such a card is also disclosed.
摘要:
The invention concerns a radio frequency identification device (RFID) featuring an antenna (12) screen-printed on a fibrous support and a chip (10) connected to the connection terminals (17 and 19) of the antenna. According to the main characteristic of the invention, a thermoplastic layer (22) and a layer of paper (24) are laminated on the antenna support (20) so that the antenna and the chip are trapped in the thermoplastic and so that the device is resistant to water and humid environments.
摘要:
A contactless reading system, wherein a chip card is fixed on a planar support of an object such as a book (11) for identification by means of the data contained in the chip card, and a mobile reader (16) provided with an antenna in order to read the data of the card. The antenna of the reader (16) consists of a small-sized convolution disposed in a series with a large-sized convolution, which are concentric and which have the same winding direction. A maximum value is obtained for the component (H) of the electromagnetic field produced by the antenna parallel to the antenna at a given distance from the antenna. Maximum reception by the chip card of electromagnetic signals emitted by the antenna is obtained when the antenna is disposed in a perpendicular position in relation to the support of the card and at the given distance from the card.
摘要:
The invention concerns a radio frequency identification device (RFID) including a chip (12) and an antenna (10) connected together on a support, the antenna being printed onto the support and the support being fixed to an object with an added attachment means. According to the main characteristic, the attachment means overlaps at least once at least one turn of the antenna so that the radio frequency identification device (RFID) is destroyed if the support is detached from the object without the attachment means being removed.
摘要:
An identity booklet such as a passport including a reinforced paper cover made up of a top cover board (16) and bottom cover board (14), an inside quire whose top (22) and bottom (20) flyleaves are laminated respectively at the back of the top cover board and in front of the bottom cover board and a radio frequency identification device (RFTD) made up of a chip (12) and an antenna connected to the terminals of the chip. The antenna includes a first part of the antenna (10) placed on the surface of the top and/or bottom cover board designed to be laminated with the corresponding flyleaf and a second part of the antenna placed on the surface of the top and/or bottom flyleaf designed to be laminated with the corresponding cover board, the first and second parts of the antenna being connected to constitute the antenna when the flyleaves are laminated with the cover boards.
摘要:
A device for the customization and automatic dispensing of single smart contactless tickets provided with a device to check the reliability of tickets and a device to customize the tickets, and including a storage location for tickets in the form of a vertical stack. The dispensing device includes a suction cup (20) provided with apparatus to control its vacuum and supported by a movable arm (31) moving along a vertical path, the suction cup enabling the unstacking and removal of a ticket (13) from the storage location and carrying it until it rests on a drive system, and an external antenna (24) adapted to check the reliability of the ticket initially at the time of unstacking.
摘要:
The invention concerns a device for the customization and automatic dispensing of single smart contactless tickets provided with means to check the reliability of tickets and means to customize the tickets, and including a storage location for tickets in the form of a vertical stack. According to the main characteristic, the dispensing device includes a suction cup (20) provided with means to control its vacuum and supported by a movable arm (31) moving along a vertical path, the suction cup enabling the unstacking and removal of a ticket (13) from the storage location and carrying it until it rests on a drive system, and an external antenna (24) adapted to check the reliability of the ticket initially at the time of unstacking.
摘要:
A multilayer contactless smartcard 10 including an electronic chip embedded in the card, the chip being connected to an antenna 22 printed on a carrier layer 20, and two card bodies, one on each side of the carrier, each including at least one plastic layer 40 and 60. The antenna carrier is opaque and includes a first cut-out forming a void 23 filled with a transparent plastic; and the plastic layers of the two card bodies each include a second cut-out forming two identical voids 43 and 63 the outlines of which superimpose, in order to make a transparent zone appear in the thickness of the card, forming a transparent logo in the shape of the cut-out. A process for manufacturing such a card is also disclosed.
摘要:
The invention concerns a contactless portable object (10, 30, 60) featuring a main radiofrequency device made up of a main chip (18, 38, 68) and a main antenna (16, 36, 66) connected together so that, when the portable object enters the magnetic field of a suitable reader, the main radiofrequency device provides power to the chip and ensures communication between the chip and the reader. According to the main characteristic of the invention, the portable object includes a secondary contactless device featuring a secondary antenna (12, 32, 62) and an electric circuit set up in such a way that, when the two antennas enter the magnetic field of a suitable reader at the same time, the amount of energy required to power the electric circuit and have it operational being less than the amount of energy required to power the main chip (18, 38, 68) and have it operational, the electric circuit is powered and makes the reading of data of the main chip impossible.