TW201329850A - Wireless information display device - Google Patents

Abstract

A wireless information display device includes: an antenna; a passively operated radio frequency identification chip; and a display module, wherein the antenna is provided to receive electric wave carried with signal from a computer system. The radio frequency identification chip includes a demodulator, a modulator, a power management circuit, and a processing circuit. The processing circuit is provided to transmit the identification code of the radio frequency identification chip back to the antenna for allowing the computer system to make a decision. The power management circuit converts the electric wave into at least a first electric power for enabling the radio frequency identification chip to operate and a second electric power for being consumed by the display module. Furthermore, the processing circuit directly displays the display data of the received signal on the display module.

Description

Wireless information display device

The present invention relates to an information display device, and more particularly to a wireless information display device that uses a radio frequency identification chip for wireless information transmission and display.

The conventional wireless information display device transmits an electric wave through a computer system, and then receives the electric wave from the information display device. Finally, a display module displays display information from the computer system.

Although the conventional wireless information display device can achieve the wireless transmission and display purposes, the following shortcomings still need to be overcome: at least two antennas must be provided to be generated by the first antenna. The power is supplied to the RFID chip itself, and the power generated by the second antenna is supplied to the display module; additional memory must be added to store the display data with a large amount of data; an additional control unit must be added to control the memory. The display data is stored, and the display module is controlled to display the display data, thereby achieving wireless data transmission and display purposes. In other words, the cost of such conventional wireless information display devices cannot be reduced, and the required electronic components cannot be reduced, thereby failing to meet the current environmental requirements.

In addition, the computer system must continuously transmit radio waves to the conventional wireless information display device in order to continue to supply power and operate normally, thereby causing waste of power and not meeting current energy saving requirements.

Therefore, how to design a invention that overcomes the above-mentioned shortcomings of the prior art is a major problem that the inventors of the present invention are trying to solve.

SUMMARY OF THE INVENTION A primary object of the present invention is to provide a wireless information display device capable of overcoming the deficiencies of the prior art, which has the effect of reducing cost, the efficacy of meeting current environmental requirements, and the effect of energy saving.

To achieve the above objective, the present invention provides a wireless information display device comprising: an antenna, a passively operating RFID chip, and a display module. The antenna receives a radio wave, and the radio wave carries a signal, the signal includes a display data; the radio frequency identification chip includes a demodulator, a modulator, a power management circuit, and a processing circuit. The demodulator demodulates the signal from the antenna and transmits the signal to the processing circuit. The processing circuit transmits an identification code of the RFID chip to the antenna through modulation of the modulator. The power management circuit Having a rectifying circuit, a first voltage doubling circuit and a second voltage doubling circuit, the rectifying circuit and the first voltage doubling circuit converting the electric wave into at least a first power for operating the radio frequency identification chip, The first power is further generated by the second voltage multiplying circuit to generate a second power; the display module is electrically connected to the processing circuit of the radio frequency identification chip, and the processing circuit is to display the received signal The data is directly displayed on the display module, and the second power system of the power management circuit supplies power to the display module, and the display module needs to use electricity only when updating the display screen, and can still display after the supply of power is lost. The current display.

In this way, it has the effect of reducing costs, the efficacy of meeting current environmental requirements, and the effect of energy saving.

For a fuller understanding of the features, features and aspects of the present invention, reference should be made to the accompanying drawings.

Referring to Figures 1 and 2, the present invention provides a wireless information display device, which is a wireless information display device that is energy-saving, cost-reducing, and meets current environmental requirements. The wireless information display device comprises: an antenna 1, a passively operated RFID chip 2, and a display module 3.

Referring to FIG. 1, the antenna 1 receives a radio wave from a computer system (not shown), and the radio wave carries a signal, and the signal includes a display material. The antenna 1 may be a ring antenna or a flat antenna, not shown, or the antenna 1 may be an array antenna composed of a plurality of loop antennas and a majority of the planar antennas. Forming an array antenna, or an array antenna composed of at least one loop antenna and at least one panel antenna, to receive a larger electric wave, thereby converting into larger power, so that the radio frequency identification chip 2 converts the power, In addition to being self-contained, it is sufficient for the display module 3 to be used, without the need for additional antennas.

The passively operating RFID chip 2 can be a passive RFID chip, or can be an active RFID chip that has been set to operate passively. The active RFID chip is set to be normal and not active. Passive operation of the transmitted signal.

The passively operating RFID chip 2 includes a power management circuit 21, a demodulator 22, a modulator 23, and a processing circuit 24. Preferably, the system further includes an antenna matching circuit 25. The demodulator 22 demodulates the signal 221 from the antenna 1 and transmits it to the processing circuit 24 (as shown, a clock signal 222 is also transmitted at the same time. The English used in the circuit is: Clock, referred to as: CLK) The processing circuit 24 transmits an identification code 242 of the RFID chip 2 to the antenna 1 via the modulation of the modulator 23, and the identification code 242 belongs to the radio frequency identification crystal 2 (detailed If there are a plurality of information display devices of the present invention, each of the radio frequency identification chips 2 in each of the information display devices has its own unique identification code 242 for distinguishing, and the antenna 1 is dedicated to the radio frequency identification chip. The identification code 242 of 2 is transmitted back to the computer system (not shown). At this time, the computer system will determine whether the identification code 242 corresponds to the information display device that will display the displayed data. If so, the display material 243 will be transmitted to the information display device of the present invention having the identification code 242.

The processing circuit 24 of the RFID chip 2 has an Electrically-Erasable Programmable Read-Only Memory (EEPROM) 241. The electronic erasable programmable device is only 241. The read memory 241 is only used to temporarily store the configuration setting values for the majority setting configuration and the identification code 242. The display data 243 can be directly displayed on the display module 3, so it is not necessary to store the The electronic erasable programmable read only memory 241 does not even need to add any other memory (not shown) for storing the display material 243. Wherein, the configuration setting values are set in the radio frequency identification chip 2: whether the encryption setting and the encryption type setting; in other words, the processing circuit 24 of the radio frequency identification chip 2 is processing: confirming whether to encrypt, and encrypting and decrypting Wait for three actions. In addition, the antenna matching circuit 25 in the RFID chip 2 is electrically connected between the antenna 1 and the power management circuit 21, and the antenna matching circuit 25 is configured to control the RFID chip 2 to match the antenna 1. .

The power management circuit 21 has a rectifier circuit 211, a first voltage doubler circuit 211a and a second voltage doubler circuit 213. Preferably, the power management circuit 21 further includes a voltage limiting circuit 212. The rectifying circuit 211 and the first voltage multiplying circuit 211a convert the electric wave into at least a first electric power 214 for the radio frequency identification chip 2, and the first electric power 214 is further connected to the second voltage multiplying circuit 213. A second power 215 is generated. In addition, the voltage limiting circuit 212 in the power management circuit 21 is electrically connected between the first voltage multiplying circuit 211a and the processing circuit 24 to supply the limited first power 214, and the voltage limiting is performed. The first first power 214 is supplied to the radio frequency identification chip 2 via the processing circuit 24, and the voltage limiting circuit 212 is configured to limit the first power 214 to a predetermined value (eg, 3.3v), thereby providing protection. The second voltage multiplying circuit 213 is electrically connected between the first voltage doubler circuit 211a and the display module 3 to supply the second power 215 to the display module 3, wherein the After passing through the second voltage doubler circuit 213, the power 214 is boosted to a second power 215 that is greater than the first power 214.

The display module 3 is electrically connected to the processing circuit 24 of the RFID chip 2. The processing circuit 24 displays the display data 243 directly on the display module 3 without any memory (including any memory). The storage and transfer of the electronic erasable programmable read only memory 241 or any other memory (not shown) as shown in FIG. 1 , and the display module 3 requires power only when updating the display screen. The current display screen can be displayed after the power supply is lost. The display module 3 can be an electronic paper or other display having the same function. Moreover, the power source of the display module 3 is also The radio frequency identification chip 2, that is, the second power 215 converted by the power management circuit 21, does not need to additionally add another antenna to additionally convert the power used by the display module 3.

Referring to FIG. 2, the first and second voltage multiplying circuits 211a and 213 in the power management circuit 21 of the radio frequency identification chip 2 are electrically connected to each other from the majority of the half wave rectifiers 213a, wherein the rectification is performed. The subsequent power is first formed by the double voltage of the first voltage doubler circuit 211a to form a smaller first power 214, and then boosted to a larger second power by the second voltage doubler of the second voltage doubler circuit 213. 215, the power supply positive pole (Vout+) and the power supply negative pole (Vout-) are electrically connected to the display module 3 to supply the second power 215, and the voltage limiting circuit 213 in the figure is used to limit the first power. The voltage of 214 is a preset value (for example: 3.3v). As shown in the figure, there are six rectangular small dashed boxes of the same row and a large dashed box of rectangles located below, wherein the large dashed box of the rectangle is the voltage limiting circuit 212, and the rectangles of the six same rows are small. In the dashed box, the first, second and fifth, six rectangular small dashed frames from left to right are the second voltage doubler circuit 213, and the remaining third and fourth rectangular small dashed boxes are It is the first voltage doubler circuit 211a.

The information display device of the present invention constructed by the above-mentioned members can be applied to display of personnel identity in stores, warehouses, and special occasions. In the case of a store, it is displayed by means of a computer system (not shown) to display product information, product prices, product expiration date, and preferential information, and even advertising information (which can be displayed using larger sizes) The device can display), as long as the computer system can update the display information of all the same products at one time, of course, the application can be further expanded. For example, the computer of the head office uniformly releases the update order to all the vendors, so that all Vendors can use the respective computer systems to perform the one-time update described for the information referred to by the head office; in the case of warehousing, the final inventory quantity and product circulation information are displayed by the instructions of the computer system; In the case of a person in a special occasion (such as a exhibition hall), it is possible to distinguish the identity of a specific person, such as a VIP or a staff member.

The wireless information display device of the present invention is characterized in that sufficient power can be generated without additional antennas (in addition to being supplied to the RFID chip 2 itself, it can also be supplied to the display module 3 requiring a large power. ), the display data 243 can be displayed by the display module 3 without additional memory, and the same wireless data display purpose as the prior art can be achieved without the control of the control unit, thereby reducing the cost. The efficacy of reducing the required electronic components (no need to add additional antennas, memory, and control units, etc.) to achieve environmentally friendly requirements; further, the computer system (not shown) does not need to be as before As a technology, it is necessary to continuously transmit radio waves to the information display device to operate normally. In actual operation, the radio waves do not need to be continuously transmitted to the antenna 1. The information display device of the present invention can convert enough first and second powers 214 and 215. Power supply, the information display device of the present invention does have a better technology than the prior art, compared to the prior art that the computer system must continuously transmit radio waves. Can be effective.

The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structural changes of the present invention and the contents of the drawings are all included in the present invention. Within the scope of the rights, it is given to Chen Ming.

1. . . antenna

2. . . Radio frequency identification chip

twenty one. . . Power management circuit

211. . . Rectifier circuit

211a. . . First voltage doubler circuit

212. . . Voltage limiting circuit

213. . . Second voltage doubler circuit

213a. . . Half wave rectifier

214. . . First power

215. . . Second power

twenty two. . . Demodulator

221. . . Signal

222. . . Clock signal

twenty three. . . Modulator

twenty four. . . Processing circuit

241. . . Electronic erasable programmable read only memory

242. . . Identifier

243. . . Display data

25. . . Antenna matching circuit

3. . . Display module

Figure 1 is a block diagram of the circuit of the present invention.

Fig. 2 is a schematic circuit diagram of a power management circuit in the present invention.

1. . . antenna

2. . . Radio frequency identification chip

twenty one. . . Power management circuit

211. . . Rectifier circuit

211a. . . First voltage doubler circuit

212. . . Voltage limiting circuit

213. . . Second voltage doubler circuit

213a. . . Half wave rectifier

214. . . First power

215. . . Second power

twenty two. . . Demodulator

221. . . Signal

222. . . Clock signal

twenty three. . . Modulator

twenty four. . . Processing circuit

241. . . Electronic erasable programmable read only memory

242. . . Identifier

243. . . Display data

25. . . Antenna matching circuit

3. . . Display module

Claims (10)

A wireless information display device comprising: an antenna for receiving a radio wave, the radio wave carrying a signal, the signal comprising a display data; a passively operating radio frequency identification chip comprising a demodulator and a modulation a power management circuit and a processing circuit, the demodulator demodulating the signal from the antenna and transmitting the signal to the processing circuit, the processing circuit is to adjust an identification code of the radio frequency identification chip via the modulator And returning to the antenna, the power management circuit has a rectifying circuit, a first voltage doubling circuit and a second voltage doubling circuit, and the rectifying circuit and the first voltage doubling circuit convert the electric wave into a first power for the RFID chip to operate, the first power generating a second power via the second voltage multiplying circuit; and a display module electrically coupled to the processing circuit of the RFID chip The processing circuit displays the display data in the received signal directly in the display module, and the second power system of the power management circuit supplies power to the display module, and the display module is only updated. When the picture needs electricity, and still shows the current display screen after losing power supply. The wireless information display device according to claim 1, wherein the antenna is a ring antenna, a panel antenna, an array antenna composed of a plurality of loop antennas, and a majority of the panel antennas. An array antenna, and one of an array antenna composed of at least one loop antenna and at least one panel antenna. The wireless information display device of claim 1, wherein the radio frequency identification chip is a passive RFID chip. The wireless information display device of claim 1, wherein the radio frequency identification chip is an active RFID chip that has been set to operate passively, and the active RFID chip is set to be normal and Passive operation that does not actively transmit signals. The wireless information display device of claim 1, wherein the processing circuit in the radio frequency identification chip has an electrically-erasable programmable read-only memory (Electrically-Erasable Programmable Read-Only Memory). Abbreviation: EEPROM), the electronic erasable programmable read-only memory is only used to temporarily store configuration settings for most configuration settings and the identification code. The wireless information display device of claim 5, wherein the configuration setting values are setting whether the radio frequency identification chip is encrypted or not. The wireless information display device of claim 6, wherein the processing circuit of the radio frequency identification chip is processed: confirming whether to encrypt, and encrypting and decrypting. The wireless information display device of claim 1, wherein the power management circuit of the radio frequency identification chip further has a voltage limiting circuit electrically connected to the first piezoelectric Between the circuit and the processing circuit to supply the first power after the voltage limitation, and the first power after the voltage limitation is supplied to the radio frequency identification chip via the processing circuit, the second voltage double circuit The first voltage doubler circuit is connected between the first voltage doubler circuit and the display module to supply the second power to the display module. The wireless information display device according to claim 1, wherein the first and second voltage-voltage circuits in the power management circuit of the radio frequency identification chip are electrically connected to each other from a plurality of half-wave rectifiers. The power converted by the power management circuit and rectified is first formed by the first voltage doubler circuit, and then boosted to a second power greater than the first power by the second voltage doubler circuit. electric power. The wireless information display device of claim 1, wherein the radio frequency identification chip further comprises an antenna matching circuit electrically connected between the antenna and the power management circuit, The antenna matching circuit is adapted to control the RFID chip to match the antenna.