Near field communication (NFC) and radio frequency identification (RFID) composite reading device, electronic equipment and notebook computer
By using common antennas and switching control modules in electronic devices to realize time-sharing multiplexing of NFC and RFID readers and writers, the problem of limited antenna layout is solved, the read and write accuracy is improved, the read and write distance is extended, and the power consumption is reduced.
Patent Information
- Application Number
- CN202421478762.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-06-26
AI Technical Summary
When integrating NFC readers and RFID readers in electronic devices at the same time, the antenna arrangement is limited, resulting in a decrease in read and write distance, a decrease in read and write accuracy and an increase in power consumption.
A common antenna is adopted and time-sharing multiplexing of the NFC readers and RFID readers is achieved through switching control modules and switches.
It improves the read and write accuracy of NFC and RFID readers, extends the read and write distance, and reduces the power consumption of electronic devices.
Smart Images
Figure CN222734487U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of electronic technology, and in particular to an NFC and RFID composite reading device, an electronic device and a laptop computer. Background Art
[0002] NFC readers and RFID readers require antennas when in use. When these two readers are integrated on an electronic device (such as a laptop) at the same time, in order to allow the antenna to radiate the magnetic field outward better, the antenna needs to be placed in the mouse touch pad area because this area is a plastic window. However, due to the limited size of the mouse touch pad area, if the NFC reader antenna and the RFID reader antenna are placed at the same time, the following defects will occur:
[0003] (1) The size of the two antennas is limited, which reduces the reading and writing distance of the reader;
[0004] (2) Both antennas operate at 13.56 MHz. When the two antennas are too close and operate at the same time, they will interfere with each other, reducing the reading and writing accuracy.
[0005] (3) When two antennas work at the same time, power consumption will increase and heat will be generated, which is not conducive to the heat dissipation of electronic products. Summary of the invention
[0006] The present application provides an NFC and RFID composite reading device, an electronic device and a laptop computer, which has the advantage of using a common antenna to realize multiplexing of an NFC reader and an RFID reader, which is beneficial to improving reading and writing accuracy, and is beneficial to reducing power consumption when applied to electronic devices.
[0007] The technical solution of this application is as follows:
[0008] In one aspect, the present application provides an NFC and RFID composite reading device, comprising:
[0009] Public antenna;
[0010] An NFC reader / writer and an RFID reader / writer, wherein the NFC reader / writer and the RFID reader / writer are connected to a common antenna via a switching switch, wherein the switching switch is used to switch the connection between the NFC reader / writer and the RFID reader / writer and the common antenna;
[0011] And a switching control module, wherein the switching control module is connected to the NFC reader and the RFID reader, receives output signals of the NFC reader and the RFID reader and is used to control the switching switch.
[0012] Furthermore, the switch is a circuit with a conduction switching function.
[0013] Furthermore, the switch is a mechanical contact switch, and the switch includes at least two contacts respectively connected to the NFC reader and the RFID reader, and one of the contacts is a normally closed contact.
[0014] Furthermore, the switching control module is used to control the switching switch according to the output signals of the NFC reader / writer and the RFID reader / writer.
[0015] On the other hand, the present application provides an electronic device, including a power supply, a processor and a memory, wherein the electronic device includes the NFC and RFID composite reading device as described above, the power supply supplies power to the NFC and RFID composite reading device, and the NFC reader and the RFID reader are connected to the processor.
[0016] On the other hand, the present application provides a laptop computer, including a power supply, a processor and a memory, wherein the laptop computer includes the NFC and RFID composite reading device as described above, the power supply supplies power to the NFC and RFID composite reading device, the NFC reader and the RFID reader are connected to the processor, and a common antenna is arranged under the touch pad of the laptop computer.
[0017] In summary, the beneficial effects of this application are:
[0018] 1. The NFC and RFID composite reading device proposed in this application uses a common antenna to realize the multiplexing of NFC reader and RFID reader, thereby improving the functional applicability;
[0019] 2. The laptop computer proposed in this application has only one antenna arranged in the mouse touch pad area, which allows the NFC reader and the RFID reader to be time-division multiplexed. Compared with the prior art, the reading and writing distance of the two readers is improved, the reading and writing accuracy of the two readers is enhanced, and the power consumption of the laptop computer is reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the principle of this application. DETAILED DESCRIPTION
[0021] The specific implementation of the present application is described in detail below with reference to the accompanying drawings.
[0022] Embodiment 1: A NFC and RFID composite reading device, referring to Figure 1 , including a common antenna, a switching control module, an NFC reader and an RFID reader.
[0023] The NFC reader / writer and the RFID reader / writer are connected to a common antenna via a switching switch, and the switching switch is used to switch the NFC reader / writer and the RFID reader / writer to be connected to the common antenna.
[0024] In this specific embodiment, the switch is a mechanical contact switch, and the switch includes at least two contacts respectively connected to the NFC reader and the RFID reader, and one of the contacts is a normally closed contact.
[0025] The switching control module is connected to the NFC reader and the RFID reader, receives the output signals of the NFC reader and the RFID reader and is used to control the switching switch. The switching control module is used to control the switching switch according to the output signals of the NFC reader and the RFID reader.
[0026] like Figure 1 As shown, the switching control module is a time-division multiplexing switching circuit. It is assumed that contact 1 of the switching switch is a normally closed contact. When working, the NFC reader is powered on to perform card inspection, and the RFID reader is not powered on. When a card approaches the shared antenna, the NFC reader determines whether the card is an NFC card. If it is, the NFC reader performs read and write operations; if not, the time-division multiplexing switching circuit switches the switch to position 2, the NFC reader is powered off, and the RFID reader is powered on. If it is an RFID card, the RFID reader performs read and write operations. If it is not an RFID card or the RFID reader has finished reading and writing operations, the time-division multiplexing switching circuit switches the switch to position 1, the RFID reader is powered off, and the NFC reader is powered on again to perform card inspection.
[0027] In some other specific embodiments, the switch is a circuit with a conduction switching function, typically a transistor / MOS tube circuit.
[0028] In some other specific embodiments, the switching control module is a main control module for controlling the switching switch. It can be understood that when the device is set on an electronic terminal with computing and processing capabilities, the main control module can be a processor of the electronic terminal.
[0029] Embodiment 2, an electronic device includes a power supply, a processor and a memory, wherein the electronic device includes the NFC and RFID composite reading device as described in Embodiment 1, the power supply supplies power to the NFC and RFID composite reading device, and the NFC reader and the RFID reader are connected to the processor.
[0030] Embodiment 3, a laptop computer includes a power supply, a processor and a memory, wherein the laptop computer includes the NFC and RFID composite reading device as described in Embodiment 1, the power supply supplies power to the NFC and RFID composite reading device, the NFC reader and the RFID reader are connected to the processor, and a common antenna is arranged under the touch pad of the laptop computer.
[0031] The above is only a preferred implementation of the present application. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the present application, and these all fall within the scope of protection of the present application.
Claims
1. A NFC and RFID composite reading device, characterized in that: include: Public antenna; An NFC reader / writer and an RFID reader / writer, wherein the NFC reader / writer and the RFID reader / writer are connected to a common antenna via a switching switch, wherein the switching switch is used to switch the connection between the NFC reader / writer and the RFID reader / writer and the common antenna; And a switching control module, wherein the switching control module is connected to the NFC reader and the RFID reader, receives output signals of the NFC reader and the RFID reader and is used to control the switching switch.
2. The NFC and RFID composite reading device according to claim 1, characterized in that: The switching switch is a circuit with a conduction switching function.
3. The NFC and RFID composite reading device according to claim 1, characterized in that: The switch is a mechanical contact switch, and includes at least two contacts respectively connected to the NFC reader and the RFID reader, one of which is a normally closed contact.
4. The NFC and RFID composite reading device according to any one of claims 1 to 3, characterized in that: The switching control module is used to control the switching switch according to the output signals of the NFC reader / writer and the RFID reader / writer.
5. An electronic device comprising a power supply, a processor and a memory, characterized in that: The electronic device comprises the NFC and RFID composite reading device as described in any one of claims 1 to 4, a power supply supplies power to the NFC and RFID composite reading device, and the NFC reader and the RFID reader are connected to the processor.
6. A laptop computer, comprising a power supply, a processor and a memory, characterized in that: The laptop computer includes the NFC and RFID composite reading device as described in any one of claims 1 to 4, a power supply supplies power to the NFC and RFID composite reading device, the NFC reader and the RFID reader are connected to the processor, and a common antenna is arranged under the laptop computer touchpad.