WO2015035825A1 - 一种sim卡信号转换方法及装置 - Google Patents
一种sim卡信号转换方法及装置 Download PDFInfo
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- WO2015035825A1 WO2015035825A1 PCT/CN2014/082124 CN2014082124W WO2015035825A1 WO 2015035825 A1 WO2015035825 A1 WO 2015035825A1 CN 2014082124 W CN2014082124 W CN 2014082124W WO 2015035825 A1 WO2015035825 A1 WO 2015035825A1
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- signal
- terminal device
- original
- sim card
- conversion
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 186
- 238000000034 method Methods 0.000 title claims abstract description 49
- 230000005540 biological transmission Effects 0.000 claims abstract description 109
- 230000008054 signal transmission Effects 0.000 claims abstract description 82
- 239000000463 material Substances 0.000 claims description 12
- 230000000295 complement effect Effects 0.000 claims description 6
- 229910044991 metal oxide Inorganic materials 0.000 claims description 6
- 150000004706 metal oxides Chemical class 0.000 claims description 6
- 239000004065 semiconductor Substances 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 13
- 230000003321 amplification Effects 0.000 description 10
- 238000003199 nucleic acid amplification method Methods 0.000 description 10
- 238000004891 communication Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
- H04W8/24—Transfer of terminal data
- H04W8/245—Transfer of terminal data from a network towards a terminal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/18—Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
- H04L67/565—Conversion or adaptation of application format or content
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/60—Subscription-based services using application servers or record carriers, e.g. SIM application toolkits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/40—Security arrangements using identity modules
- H04W12/43—Security arrangements using identity modules using shared identity modules, e.g. SIM sharing
Definitions
- SIM Subscriber Identity Module
- IC Integrated Circuit
- the IC type SIM card is a chip card with a microprocessor. It is equipped with five functional modules. These functional modules are sealed on the SIM card copper interface and used in the same way as ordinary IC card packaging.
- Ordinary IC card packaging is as follows: A microelectronic chip is embedded in a card base that conforms to international standards and is made into a card form. After the package is completed, the SIM card is inserted into the card holder of the terminal, and the user can insert and remove the SIM card according to actual needs. This SIM card is mostly made of plastic or ordinary copper metal. Therefore, the surface of the SIM card is susceptible to deformation after being subjected to high temperature, and the SIM card may affect the normal use of the user after being deformed. The temperature range that the SIM card can withstand is -25 ° C to 70 ° C.
- SIM card can withstand a narrow operating temperature range, the application requirements for industrial equipment and vehicle equipment cannot be satisfied, so a chip type SIM card has appeared.
- This type of SIM card encapsulates the five modules of the IC type SIM card inside the chip, which makes it more reliable and can withstand a relatively wide temperature range.
- the general temperature specification is -40 ° C ⁇ 85 ° C .
- the main external pins are: VCC, RST, 10, CLK, VPP GND, the level range is between 1.8 ⁇ 5V. At present, the SIM card level is generally 1.8V, which is stricter on the power-on timing.
- the transmission distance of the original signal output by the SIM card is relatively small. It can be seen from the simulation analysis of the trace on the Printed Circuit Board (PCB) that the original signal trace length of the SIM card output should not exceed 25 cm. Distance may appear probabilistically unreadable The problem with the SIM card signal, so the SIM card is usually placed directly on the device for use.
- PCB Printed Circuit Board
- the SIM card is placed away from the device, for example: (1) In the in-vehicle entertainment system, some models require the SIM card to be placed away from the main communication system of the vehicle; (2) in the industry In the communication module, since the temperature of the surrounding environment is high, the SIM card needs to be away from the terminal device, thereby preventing the SIM card from being deformed in a high temperature environment for a long time. In these applications, it is not possible to place the SIM card directly on the device, but if the SIM is moved away from the device, the transmission distance of the original signal output by the current SIM card cannot satisfy these applications.
- Embodiments of the present invention provide a method and a device for converting a user identity card signal.
- the generated target signal can transmit a long distance through a signal transmission line, and can meet an application that needs to place a SIM card away from the terminal device.
- the SIM card signal conversion method provided by the first aspect of the present invention includes: acquiring an original signal output by the SIM card;
- the terminal device Sending the target signal to the terminal device, the terminal device acquires the target signal by using a signal transmission line, and the SIM card exists independently of the terminal device.
- the original signal includes at least one of the following: a logic gate TTL signal, or a complementary metal oxide semiconductor CMOS Signal
- the target signal includes at least one of the following: an RS232 signal, or a low voltage differential signal LVDS signal, or a universal serial bus USB signal.
- the converting the original signal into a target signal is specifically : converting the original signal into an RS232 signal, including
- the sending the target signal to the terminal device is specifically:
- the converting the original signal into a target signal is specifically : converting the original signal into an LVDS signal, including
- the sending the target signal to the terminal device is specifically:
- the converting the original signal into a target signal is specifically : converting the original signal into a USB signal, including
- the sending the target signal to the terminal device is specifically:
- the material of the signal transmission line, or the geometric structure of the signal transmission line, or the technical requirement of the signal transmission line is lower than the original signal.
- the terminal device is a terminal device having the capability of restoring the target signal to the original signal.
- a second aspect of the embodiments of the present invention provides a signal conversion apparatus, where the signal conversion apparatus includes: an acquisition module, configured to acquire an original signal output by a user identity SIM card;
- a conversion module configured to convert the original signal into a target signal, where the signal attenuation and/or distortion of the target signal under equal transmission conditions and/or equivalent transmission distance is less than signal attenuation and/or distortion of the original signal
- a sending module configured to send the target signal to the terminal device, where the terminal device acquires the target signal by using a signal transmission line, where the SIM card exists independently of the terminal device.
- the original signal includes at least one of the following: a logic gate TTL signal, or a complementary metal oxide semiconductor CMOS Signal
- the target signal includes at least one of the following: an RS232 signal, or a low voltage differential signal LVDS signal, or a universal serial bus USB signal.
- the converting module includes:
- a first conversion submodule for converting the original signal into a universal asynchronous transceiver UART signal by using a first dedicated conversion chip or by using a programmable logic gate array FPGA;
- a second conversion submodule configured to convert the UART signal into the RS232 signal by using a second dedicated conversion chip or by using a separable device
- the sending module includes:
- the first sending submodule is configured to send the RS232 signal to the terminal device.
- the converting module includes: a third conversion submodule, Converting the original signal into an LVDS signal by using a third dedicated conversion chip;
- the sending module includes:
- a second sending submodule configured to send the LVDS signal to the terminal device.
- the converting module includes: a fourth conversion submodule, Converting the original signal into a USB signal by using a fourth dedicated conversion chip;
- the sending module includes:
- a third sending submodule configured to send the USB signal to the terminal device.
- the material of the signal transmission line, or the geometric structure of the signal transmission line, or the technical requirement of the signal transmission line is lower than the original signal.
- the terminal device is a terminal device having the capability of restoring the target signal to the original signal.
- the embodiments of the present invention have the following advantages:
- the SIM card and the terminal device exist independently, and the signal conversion device converts the original signal into a target signal by acquiring the original signal output by the SIM card, and the target signal has better anti-interference performance than the original signal output by the SIM card.
- the anti-interference performance, or the target signal transmission power consumption is smaller than the transmission power of the original signal output by the SIM card, or the target signal can adapt to a more complicated and harsh transmission environment, and therefore, the target signal is transmitted under the same transmission condition and/or equivalent.
- the signal attenuation and/or distortion under the distance is smaller than the signal attenuation and/or distortion of the original signal, and the target signal can be transmitted over a longer distance through the signal transmission line. Therefore, the target signal can satisfy the requirement to place the SIM card away from the terminal device. application.
- FIG. 1 is a schematic diagram of a SIM card signal conversion method according to an embodiment of the present invention.
- FIG. 2 is a schematic diagram of a SIM card signal conversion method according to another embodiment of the present invention
- FIG. 3 is a schematic diagram of a SIM card signal conversion method according to another embodiment of the present invention
- FIG. 5 is a schematic diagram of a signal conversion apparatus according to an embodiment of the present invention
- FIG. 6 is a schematic diagram of a signal conversion apparatus according to another embodiment of the present invention.
- FIG. 7 is a schematic diagram of a signal conversion apparatus according to another embodiment of the present invention.
- DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The technical solutions in the embodiments of the present invention will be described in conjunction with the drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of them. An embodiment. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without departing from the inventive scope are the scope of the present invention.
- the embodiment of the invention provides a SIM card signal conversion method and a signal conversion device, which can meet the requirement that the SIM card be placed on an application far away from the terminal device.
- FIG. 1 is a schematic diagram of a SIM card signal conversion method according to an embodiment of the present invention.
- a SIM card signal conversion method in the embodiment of the present invention includes:
- the original signal output by the SIM card may be: a Transistor-Transistor Logic (TTL) signal, or a Complementary Metal Oxide Semiconductor (CMOS) signal, or other types of common signals.
- TTL Transistor-Transistor Logic
- CMOS Complementary Metal Oxide Semiconductor
- Level signals the main difference between these signals is that the high and low values are different, so these signals can be easily converted to each other.
- the signal conversion device acquires the original signal output by the SIM card.
- the original signal output by the SIM card can only be achieved over a short distance (tens of centimeters) of transmission. Therefore, in general, the SIM is inserted into the card slot, and then the card slot is directly placed on the terminal device, so that the original signal output by the S IM is required for the application that requires the SIM card to be placed away from the terminal device. The transmission distance will not be met.
- the SIM card can be separated from the terminal device, that is, the SIM card and the terminal device exist independently.
- the signal transmission line can be connected between the SIM card and the signal conversion device and between the signal conversion device and the terminal device.
- the signal conversion device After obtaining the original signal output by the SIM, the signal conversion device converts the original signal output by the SIM card into a target signal, and the target signal can be: RS232 signal, or Universal Serial Bus (USB) signal, or low voltage differential signal. (Low-Voltage Differential Signaling, LVDS).
- RS232 signal or Universal Serial Bus (USB) signal
- USB Universal Serial Bus
- LVDS Low-Voltage Differential Signaling
- the specific signal conversion device needs to convert the original signal into which target signal, which can be determined according to the port of the terminal device. For example: the terminal device can recognize the RS232 signal, and the terminal device has the ability to restore the RS232 signal to the original signal, then the signal conversion device converts the original signal into an RS232 signal; if the terminal device has a USB interface, the signal conversion device will original signal Converted to a USB signal; if the port of the terminal device is capable of recognizing the LVDS signal and the terminal device has the ability to restore the LVDS signal to the original signal, the signal conversion device will be original The signal is converted to an LVDS signal.
- the signal attenuation and/or distortion of the target signal under the same transmission conditions and/or the equivalent transmission distance is smaller than the signal attenuation and/or distortion of the original signal.
- the equivalent transmission conditions here mainly refer to the same temperature and the same transmission interference.
- the terminal device may specifically be: a mobile terminal device such as a mobile phone or a tablet computer (PAD).
- the signal conversion device After converting the original signal output by the SIM card into a target signal, the signal conversion device transmits the target signal to the terminal device through the signal transmission line, because the signal attenuation and/or distortion of the target signal under the same transmission condition and/or the equivalent transmission distance is smaller than the original signal.
- the signal is attenuated and/or distorted, so the target signal can be transmitted over longer distances.
- the target signal is an RS232 signal
- the maximum transmission distance of the RS232 signal is up to 15 meters
- the original transmission signal of the SIM card such as a TTL signal
- the transmission distance of the RS232 signal is much larger than the original signal
- the transmission distance, and the RS232 signal can resist strong environmental interference, can adapt to more complex and more severe transmission conditions; or the target signal is LVDS signal, the transmission distance of LVDS signal can reach tens of meters, much larger than the SIM card output
- the maximum transmission distance of tens of centimeters of the original signal, and the LVDS signal has a small swing, which can be used to minimize power consumption and noise by using low-voltage amplitude and low-current drive output.
- the target signal is a USB signal
- the maximum transmission distance of the USB signal is 5 meters. If the USB signal is transmitted using the USB signal amplification line with the chip amplification, the USB signal can be transmitted over a longer distance, and the anti-interference performance of the USB signal is better than the SIM card output.
- the original signal is transmitted using the USB signal amplification line with the chip amplification
- the SIM card can be separated from the terminal device, and the signal transmission line can be connected between the SIM card and the signal conversion device and between the signal conversion device and the terminal device.
- the signal conversion device converts the original signal into a target signal by acquiring the original signal output by the SIM card, and the anti-interference performance of the target signal is better than the anti-interference performance of the original signal output by the SIM card, or the target signal transmission power consumption is less than the SIM card output.
- the transmission power of the original signal, or the target signal can adapt to a more complex and harsh transmission environment. Therefore, the signal attenuation and/or distortion of the target signal is less than the signal attenuation of the original signal under the same transmission conditions and the same transmission distance. Or distortion, the target signal can be transmitted over a longer distance through the signal transmission line, and therefore, the target signal can satisfy an application that requires the SIM card to be placed away from the terminal device.
- FIG. 2 is a schematic diagram of a method for converting a SIM card signal according to another embodiment of the present invention.
- a method for converting a SIM card signal according to another embodiment of the present invention includes:
- the original signal transmission distance of the SIM card output is short. Therefore, in general, the SIM is inserted into the card slot, and then the card slot is directly set on the terminal device, so that the SIM card is required for the request. If the application is placed away from the terminal device, the transmission distance of the original signal output by the SIM card will not be satisfied.
- the SIM card may be separated from the terminal device, that is, the SIM card and the terminal device exist independently.
- the signal transmission line can be connected between the SIM card and the signal conversion device and between the signal conversion device and the terminal device.
- the signal conversion device first acquires the original signal of the SIM output.
- the type of the original signal output by the SIM card may be different due to the type of chip used to make the SIM card.
- the original signal output by the SIM card can be: TTL signal, or CMOS signal, or other types of normal level signals. The main difference between these signals is that the values of high and low levels are different.
- the signal conversion device may first convert different original signals output by the SIM card into a unified certain type of signal, such as a TTL signal.
- the unified signal is converted into a Universal Asynchronous Receiver/Transmitter (UART) signal by using a first dedicated conversion chip, such as TDA8029, or by using a Field-Programmable Gate Array (FPGA).
- UART Universal Asynchronous Receiver/Transmitter
- FPGA Field-Programmable Gate Array
- the UART signal has the ability to check the error correction.
- the transmission timing, the material of the signal transmission line, the geometry of the signal transmission line, and the technical requirements of the signal transmission line are lower than the original signal pair transmission timing of the SIM card output, the material of the signal transmission line, and the signal.
- the geometry of the transmission line, as well as the technical requirements of the signal transmission line are lower than the original signal pair transmission timing of the SIM card output, the material of the signal transmission line, and the signal.
- the distance of the UART signal transmission is not far enough, so the UART signal can be driven and enhanced.
- the signal conversion device utilizes a second dedicated conversion chip, such as the MAX3228, or converts the UART signal into a RS232 signal using a detachable device.
- the embodiment of the invention greatly increases the transmission distance. It is advantageous to separate the SIM card from the terminal device, so that the SIM card and the terminal device exist independently. Therefore, the application requirements of the SIM card and the terminal device are separated.
- the signal conversion device transmits an RS232 signal to the terminal device through the signal transmission line. Since the original signal output by the SIM card has been converted into an RS232 signal, the terminal device that needs to receive the RS232 signal has a signal restoration function, and can restore the RS232 signal to the original signal output by the SIM, so that the terminal device can transmit using the signal conversion device. RS232 signal.
- the SIM card can be separated from the terminal device, and the signal transmission line can be connected between the SIM card and the signal conversion device and between the signal conversion device and the terminal device.
- the signal conversion device converts the original signal into a UART signal by acquiring the original signal output by the SIM card, and the UART signal has the capability of verifying the error correction, and the requirements for the transmission timing and the transmission condition are lower than the original signal output by the SIM card; the signal conversion device is After converting the original signal into a UART signal, the UART signal is further subjected to driving enhancement processing to be converted into an RS232 signal.
- the RS232 signal has a high level amplitude and strong anti-interference ability, and can adapt to a more complicated and harsh transmission environment.
- the RS232 signal can realize transmission over a longer distance.
- the maximum transmission distance of the RS232 signal can reach 15 meters.
- the signal conversion device transmits the RS232 signal to the terminal device through the signal transmission line. Therefore, the target signal RS232 signal can meet the requirements of placing the SIM card away from the terminal device, and the requirements of the transmission environment are lower than the requirements of the original signal to the transmission environment.
- FIG. 3 is a schematic diagram of a SIM card signal conversion method according to another embodiment of the present invention, such as As shown in FIG. 3, a method for converting a SIM card signal according to another embodiment of the present invention includes:
- the SIM Since the original signal transmission distance of the SIM card is short, therefore, in general, the SIM is inserted into the card slot, and then the card slot is directly set on the terminal device, so that In order to place the SIM card on an application remote from the terminal device, the transmission distance of the original signal output by the SIM card cannot be satisfied.
- the SIM card may be separated from the terminal device, that is, the SIM card and the terminal device exist independently.
- the signal transmission line can be connected between the SIM card and the signal conversion device and between the signal conversion device and the terminal device.
- the signal conversion device first acquires the original signal of the SIM output.
- the type of raw signal output by the SIM card may also differ depending on the type of chip used to make the SIM card.
- the original signal output by the SIM card can be: TTL signal, or CMOS signal, or other types of normal level signals.
- TTL signal or CMOS signal
- CMOS signal or other types of normal level signals.
- the main difference between these signals is that the values of high and low levels are different.
- the signal conversion device may first convert different original signals output by the SIM card into a unified certain type of signal, such as a TTL signal.
- the signal after the unified is converted into an LVDS signal by using the fourth dedicated conversion chip.
- the transmission distance of the standard LVDS signal can reach several tens of meters, which is much larger than the maximum transmission distance of several tens of centimeters of the original signal output by the SIM card, which is beneficial to separate the SIM card from the terminal device, so that the SIM card and the terminal device exist independently. Therefore, the application requirements of the SIM card and the terminal device are separated.
- the LVDS signal has a small swing, and can be used to drive the output with low voltage amplitude and low current, which can minimize power consumption and noise, and reduce signal attenuation during signal transmission.
- the LVDS signal is transmitted to the terminal device by using the signal transmission line, and the terminal device needs to have the function of restoring the LVDS signal to the original signal, so that the terminal device can use the LVDS signal sent by the signal conversion device. .
- the SIM card can be separated from the terminal device, and the signal transmission line can be connected between the SIM card and the signal conversion device and between the signal conversion device and the terminal device.
- the signal conversion device converts the original signal into an LVDS signal by acquiring the original signal output by the SIM card, and transmits the LVDS signal to the terminal device through the signal transmission line. Because the maximum transmission distance of the LVDS signal can reach several tens of meters, which is much larger than the original signal output by the SIM card, and the LVDS signal has Small swing, low-voltage amplitude and low-current drive output can be used to minimize power consumption and noise, and signal attenuation during signal transmission is small. Therefore, the target signal LVDS signal can meet the requirements of placing the SIM card. Stay away from the application on the terminal device.
- FIG. 4 is a schematic diagram of a SIM card signal conversion method according to another embodiment of the present invention.
- a method for converting a SIM card signal in another embodiment of the present invention includes:
- the SIM Since the original signal transmission distance of the SIM card is short, therefore, the SIM is usually inserted into the card slot, and then the card slot is directly placed on the terminal device, so that the SIM card is required to be placed away from the terminal device. For the application on the terminal device, the transmission distance of the original signal output by the SIM card will not be satisfied.
- the SIM card may be separated from the terminal device, that is, the SIM card and the terminal device exist independently.
- the signal transmission line can be connected between the SIM card and the signal conversion device and between the signal conversion device and the terminal device.
- the signal conversion device first acquires the original signal of the SIM output.
- the type of raw signal output by the SIM card may also differ depending on the type of chip used to make the SIM card.
- the original signal output by the SIM card can be: TTL signal, or CMOS signal, or other types of normal level signals.
- TTL signal or CMOS signal
- CMOS signal or other types of normal level signals.
- the main difference between these signals is that the values of high and low levels are different.
- the signal conversion device may first convert different original signals output by the SIM card into a unified certain type of signal, such as a TTL signal.
- the signal after the unified is converted into a USB signal by using a third dedicated conversion chip, such as a CP2102 chip.
- the maximum transmission distance is 5 meters, which is larger than the maximum transmission distance of tens of centimeters of the original signal output by the SIM card. If the USB signal is transmitted using the USB signal amplification line including the chip amplification, then USB signal can be transmitted over longer distances, It is advantageous to separate the SIM card from the terminal device, so that the SIM card and the terminal device exist independently. Therefore, the application requirements of the SIM card and the terminal device are separated. And the USB signal has strong anti-interference ability, and the signal transmission attenuation and distortion are small.
- the signal converter transmits a USB signal to the terminal device through the signal transmission line.
- the USB signal can be transmitted to the terminal device by using a USB signal amplification line including the chip amplification, and the terminal device needs to have a USB interface, and can recognize the USB signal sent by the signal conversion device. .
- the SIM card can be separated from the terminal device, and the signal transmission line can be connected between the SIM card and the signal conversion device and between the signal conversion device and the terminal device.
- the signal conversion device converts the original signal into a USB signal by acquiring the original signal output from the SIM card, and transmits the USB signal to the terminal device.
- the anti-interference ability of the USB signal is stronger than the TTL signal and CMOS signal output by the SIM. Therefore, the attenuation and distortion of the USB signal are small during the transmission process.
- the maximum transmission distance of the USB signal can reach 5 meters, which is larger than the original output of the SIM.
- the maximum transmission distance of the signal is several tens of centimeters. Therefore, the target signal USB signal can satisfy the application that requires the SIM card to be placed away from the terminal device.
- FIG. 5 is a schematic diagram of a signal conversion apparatus according to an embodiment of the present invention.
- the signal conversion apparatus 50 in the embodiment of the present invention includes:
- the obtaining module 510 is configured to obtain an original signal output by the SIM card
- the conversion module 520 is configured to convert the original signal into a target signal, where the signal attenuation and/or distortion of the target signal is less than the signal attenuation and/or distortion of the original signal under the same transmission condition and the same transmission distance;
- the sending module 530 is configured to send a target signal to the terminal device, and the terminal device acquires the target signal by using the signal transmission line, and the SIM card and the terminal device exist independently.
- the original signal transmission distance of the SIM card output is short. Therefore, in general, the SIM is inserted into the card slot, and then the card slot is directly set on the terminal device, so that the SIM card is required for the request. If the application is placed away from the terminal device, the transmission distance of the original signal output by the SIM card will not be satisfied.
- the SIM card may be separated from the terminal device, that is, the SIM card and the terminal device exist independently.
- the signal transmission line can be connected between the SIM card and the signal conversion device and between the signal conversion device and the terminal device.
- the acquisition module 510 of the signal replacement device first acquires the original signal output by the SIM.
- the original signal output by the SIM card may be: a TTL signal, or a CMOS signal, or other types of ordinary level signals.
- the maximum transmission distance of these signals is only several tens of centimeters.
- the main difference between these signals is the height.
- the level values are different, so these signals can be easily converted to each other.
- the conversion module 520 converts the original signal output by the SIM card into a target signal, and the target signal may be: an RS232 signal, or an LVDS signal, or a USB signal.
- the specific conversion module 520 needs to convert the original signal into which target signal, which can be determined according to the port of the terminal device.
- the port of the terminal device is capable of recognizing the RS232 signal, and the terminal device has the ability to restore the RS232 signal to the original signal, then the conversion module 520 converts the original signal into an RS232 signal; if the port of the terminal device can recognize the LVDS signal, and the terminal device Having the ability to restore the LVDS signal to the original signal, the conversion module 520 converts the original signal into an LVDS signal; if the terminal device has a USB interface, the conversion module 520 converts the original signal into a USB signal.
- the terminal device may specifically be: a mobile terminal device such as a mobile phone or a PAD.
- the signal attenuation and/or distortion of the target signal under the same transmission conditions and/or the equivalent transmission distance is smaller than the signal attenuation and/or distortion of the original signal.
- the equivalent transmission conditions here mainly refer to the same temperature and the same transmission interference.
- the transmitting module 530 sends the target signal converted by the conversion module 520 to the terminal device through the signal transmission line, and the signal attenuation and/or distortion of the target signal under the same transmission condition and/or the equivalent transmission distance is smaller than the signal attenuation and/or distortion of the original signal. Therefore, the target signal can be transmitted over longer distances.
- the target signal is an RS232 signal
- the maximum transmission distance of the RS232 signal is up to 15 meters
- the original transmission signal of the SIM card for example, the maximum transmission distance of the TTL signal is only several tens of centimeters, and the transmission distance of the RS232 signal is much larger than the original signal.
- the transmission distance, and the RS232 signal can resist strong environmental interference, can adapt to more complex and more severe transmission conditions; or the target signal is LVDS signal, the transmission distance of LVDS signal can reach tens of meters, much larger than SIM
- the maximum transmission distance of tens of centimeters of the original signal output by the card, and the LVDS signal has a small swing, which can be used to minimize power consumption and noise by using low-voltage amplitude and low-current drive output; if the target signal is USB Signal, the maximum transmission distance of the USB signal is 5 meters. If the USB signal is transmitted using the USB signal amplification line with the chip amplification, the USB signal can be transmitted over a longer distance, and the anti-interference performance of the USB signal is better than SIM.
- the original signal output by the card is LVDS signal, the transmission distance of LVDS signal can reach tens of meters, much larger than SIM
- the maximum transmission distance of tens of centimeters of the original signal output by the card, and the LVDS signal
- the SIM card can be separated from the terminal device, and the signal transmission line can be connected between the SIM card and the signal conversion device and between the signal conversion device and the terminal device.
- the conversion module of the signal conversion device converts the original signal into a target signal by acquiring the original signal output by the SIM card after the acquisition module.
- the target signal has better anti-interference performance than the original signal output of the SIM card, or the target signal transmission power consumption is smaller than the transmission power of the original signal output by the SIM card, or the target signal can adapt to more complicated and more severe transmission. surroundings.
- the signal attenuation and/or distortion of the target signal is smaller than the signal attenuation and/or distortion of the original signal, that is, the target signal can realize transmission over a longer distance, and therefore, the target signal can satisfy It is required to place the SIM card on an application that is remote from the terminal device.
- FIG. 6 is a schematic diagram of a signal conversion apparatus according to another embodiment of the present invention. As shown in FIG. 6, another embodiment of the present invention is shown.
- the signal conversion device 60 in the process includes:
- the obtaining module 610 is configured to obtain an original signal output by the SIM card
- the conversion module 620 is configured to convert the original signal into a target signal, where the signal attenuation and distortion of the target signal are less than the signal attenuation and/or distortion of the original signal under the same transmission condition and the same transmission distance;
- the sending module 630 is configured to send a target signal to the terminal device, and the terminal device acquires the target signal by using the signal transmission line, and the SIM card and the terminal device exist independently.
- the conversion module 620 can include a first conversion submodule 6201 and a second conversion submodule 6202, where:
- the first conversion sub-module 6201 is configured to convert the original signal acquired by the acquisition module 610 into a universal asynchronous transceiver UART signal by using a first dedicated conversion chip or by using a programmable logic gate array FPGA;
- a second conversion sub-module 6202 configured to convert the UART signal into an RS232 signal by using a second dedicated conversion chip or by using a detachable device;
- the sending module 630 sends the first sending submodule 6301 therein to the terminal device. Send RS232 signal.
- the conversion module 620 can also include a third conversion sub-module 6203;
- a third conversion sub-module 6203 configured to convert the original signal into an LVDS signal by using a third dedicated conversion chip
- the transmitting module 630 transmits the LVDS signal to the terminal device by using the second transmitting sub-module 6302 therein.
- the conversion module 620 can further include a fourth conversion sub-module 6204;
- a fourth conversion sub-module 6024 configured to convert the original signal into a USB signal by using the fourth dedicated conversion chip
- the transmitting module 630 transmits a USB signal to the terminal device by using the third transmitting sub-module 6303 therein.
- the SIM Since the original signal transmission distance of the SIM card is short, therefore, the SIM is usually inserted into the card slot, and then the card slot is directly placed on the terminal device, so that the SIM card is required to be placed away from the terminal device. For the application on the terminal device, the transmission distance of the original signal output by the SIM card will not be satisfied.
- the SIM card may be separated from the terminal device, that is, the SIM card and the terminal device exist independently.
- the signal transmission line can be connected between the SIM card and the signal conversion device and between the signal conversion device and the terminal device.
- the acquisition module 610 of the signal conversion device first acquires the original signal output by the SIM.
- the type of raw signal output by the SIM card may also differ depending on the type of chip used to make the SIM card.
- the original signal output by the SIM card can be: TTL signal, or CMOS signal, or other types of normal level signals.
- TTL signal or CMOS signal
- CMOS signal or other types of normal level signals.
- the main difference between these signals is that the values of high and low levels are different.
- the conversion module 620 may first convert different original signals output by the SIM card into a unified type of signal, such as a TTL signal.
- the signal after the unification is converted into a target signal.
- the specific conversion method can be as follows:
- the first conversion sub-module 6201 converts the unified signal into a universal asynchronous transceiver UART signal by using a first dedicated conversion chip, such as TDA8029, or by using a programmable logic gate array FPGA;
- the UART signal has the ability to check the error correction.
- the transmission timing, the material of the signal transmission line, the geometry of the signal transmission line, and the technical requirements of the signal transmission line are lower than the original signal pair transmission timing of the SIM card output, the material of the signal transmission line, and the signal.
- the geometry of the transmission line, as well as the technical requirements of the signal transmission line are lower than the original signal pair transmission timing of the SIM card output, the material of the signal transmission line, and the signal.
- the distance of the UART signal transmission is not far enough, so the UART signal can be driven and enhanced.
- the second conversion sub-module 6202 converts the UART signal converted by the first conversion sub-module 6201 into a second dedicated conversion chip, such as the MAX3228, or converts it into an RS232 signal using a detachable device.
- a second dedicated conversion chip such as the MAX3228
- the embodiment of the present invention greatly increases the transmission distance.
- the third conversion sub-module 6203 converts the unified signal into a LVDS signal using a third dedicated conversion chip.
- the standard LVDS signal can travel up to tens of meters, which is much larger than the maximum transmission distance of tens of centimeters of the original signal output by the SIM card.
- the fourth conversion sub-module 6204 converts the unified signal into a USB signal using a fourth dedicated conversion chip, such as a CP2102 chip.
- the maximum transmission distance is 5 meters, which is larger than the maximum transmission distance of tens of centimeters of the original signal output by the SIM card. If the USB signal is transmitted using the USB signal amplification line including the chip amplification, then The USB signal can realize transmission over a longer distance, and the USB signal has strong anti-interference ability, and the signal transmission attenuation and distortion are small.
- the above three methods may be based on the port class of the terminal device.
- Type decision For example: if the port of the terminal device can identify the RS232 signal, and the terminal device has the capability of restoring the RS232 signal to the original signal, the original conversion signal can be converted into the RS232 signal by the first conversion submodule 6201 and the second conversion submodule 6202; The port of the device is capable of recognizing the LVDS signal, and the terminal device has the ability to restore the LVDS signal to the original signal, and the original signal can be converted into the LVDS signal by the third conversion sub-module 6024; if the terminal device has a USB interface, the fourth conversion can be performed.
- Sub-module 6203 converts the original signal into a USB signal.
- the terminal device may specifically be: a mobile terminal device such as a mobile phone or a PAD.
- the first sending module 6301 sends the RS232 signal converted by the second converting submodule 6202 to the terminal device;
- the second sending submodule 6302 sends the LVDS signal converted by the third converting submodule 6203 to the terminal device;
- the third transmitting submodule 6303 transmits the USB signal converted by the fourth converting submodule 6204 to the terminal device.
- the SIM card can be separated from the terminal device, and the signal transmission line can be connected between the SIM card and the signal conversion device and between the signal conversion device and the terminal device.
- the acquisition module of the signal conversion device acquires the original signal output by the SIM card, and then each conversion sub-module in the conversion module can convert the original signal into different types of target signals, such as an RS232 signal, an LVDS signal, a USB signal;
- the anti-interference performance is better than the anti-interference performance of the original signal output by the SIM card, or the transmission power consumption is smaller than the transmission power consumption of the original signal output by the SIM card, or can adapt to a more complicated and harsh transmission environment, and therefore, in the same transmission condition
- the signal attenuation and/or distortion of the target signal at the same transmission distance is smaller than the signal attenuation and/or distortion of the original signal, that is, the target signal can be transmitted over a longer distance, and therefore, the target signal can satisfy the requirement to place the SIM card in Stay away from applications on the terminal
- FIG. 7 is a schematic diagram of a signal conversion device according to another embodiment of the present invention. As shown in FIG. 7, the signal conversion device 70 in another embodiment of the present invention is shown in FIG.
- the method includes a user interface 710, a converter 720, a processor 730 for processing signals, and a memory 740 for storing cache codes.
- User interface 710 performs the following process:
- the target signal is sent to the terminal device, and the terminal device acquires the target signal through the signal transmission line, and the SIM card and the terminal device exist independently.
- the converter 720 performs the following process:
- the original signal includes at least one of the following: a logic gate circuit TTL signal, or a complementary metal oxide semiconductor CMOS signal;
- the target signal includes at least one of the following: an RS232 signal, or a low voltage differential signal LVDS signal, or a universal serial bus USB signal.
- the converter 720 may include a first dedicated conversion chip, or the converter may include a programmable logic gate array FPGA to convert the original signal into a universal asynchronous transceiver UART signal, and the converter may further include a second dedicated conversion chip or utilize The detachable device converts the UART signal into an RS232 signal and transmits the RS232 signal to the terminal device;
- the converter 720 may be a third dedicated conversion chip that converts the original signal into an LVDS signal and transmits the LVDS signal to the terminal device;
- the converter 720 may be a fourth dedicated conversion chip that converts the original signal into a USB signal and transmits the USB signal to the terminal device.
- the SIM card can be separated from the terminal device, and the signal transmission line can be connected between the SIM card and the signal conversion device and between the signal conversion device and the terminal device.
- the user interface of the signal conversion device acquires the original signal output by the SIM card, and the converter converts the original signal into different types of target signals, such as RS232 signals, or LVDS signals, or USB signals; these target signals have better anti-interference performance.
- the anti-jamming performance of the original signal output by the SIM card, or the transmission power consumption is smaller than the transmission power consumption of the original signal output by the SIM card, or can adapt to a more complicated and harsh transmission environment, and therefore, in the same transmission condition and/or equivalent transmission
- the signal attenuation and/or distortion of the target signal under the distance is smaller than the signal attenuation and/or distortion of the original signal, that is, the target signal can be transmitted over a longer distance, and therefore, the target signal can satisfy the requirement to place the SIM card away from the terminal device.
- the device embodiments described above are merely illustrative, wherein the components displayed by the meta may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. . Some or all of the modules may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.
- the connection relationship between the modules indicates that there is a communication connection between them, specifically Implemented as one or more communication buses or signal lines. Those of ordinary skill in the art can understand and implement without any creative effort.
- the present invention can be implemented by means of software plus necessary general hardware, and of course, dedicated hardware, dedicated CPU, dedicated memory, dedicated memory, Special components and so on.
- functions performed by computer programs can be easily implemented with the corresponding hardware.
- the specific hardware structure used to implement the same function can be various, such as analog circuits, digital circuits, or dedicated circuits. Circuits, etc.
- software program implementation is a better implementation in more cases.
- the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a readable storage medium, such as a floppy disk of a computer.
- U disk mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc., including a number of instructions to make a computer device (may be A personal computer, server, or network device, etc., performs the methods described in various embodiments of the present invention.
- ROM Read-Only Memory
- RAM Random Access Memory
- disk or optical disk etc., including a number of instructions to make a computer device (may be A personal computer, server, or network device, etc., performs the methods described in various embodiments of the present invention.
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Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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EP14843764.3A EP3032851A4 (en) | 2013-09-16 | 2014-07-14 | METHOD AND DEVICE FOR CONVERTING SIM CARD SIGNAL |
JP2016541779A JP6267346B2 (ja) | 2013-09-16 | 2014-07-14 | Simカードの信号変換方法および信号変換機器 |
US15/022,155 US10142831B2 (en) | 2013-09-16 | 2014-07-14 | SIM card signal conversion method and apparatus |
Applications Claiming Priority (2)
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CN201310422911.9 | 2013-09-16 | ||
CN201310422911.9A CN104463304B (zh) | 2013-09-16 | 2013-09-16 | 一种sim卡信号转换方法及装置 |
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WO2015035825A1 true WO2015035825A1 (zh) | 2015-03-19 |
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PCT/CN2014/082124 WO2015035825A1 (zh) | 2013-09-16 | 2014-07-14 | 一种sim卡信号转换方法及装置 |
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US (1) | US10142831B2 (zh) |
EP (1) | EP3032851A4 (zh) |
JP (1) | JP6267346B2 (zh) |
CN (1) | CN104463304B (zh) |
WO (1) | WO2015035825A1 (zh) |
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EP2816439B1 (en) * | 2013-04-22 | 2018-10-03 | Huawei Device Co., Ltd. | Device for preventing deformation of communication card |
CN110324818A (zh) * | 2018-03-29 | 2019-10-11 | 上海中兴软件有限责任公司 | 信号的传输方法和电路 |
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Also Published As
Publication number | Publication date |
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EP3032851A4 (en) | 2016-06-22 |
JP6267346B2 (ja) | 2018-01-24 |
US10142831B2 (en) | 2018-11-27 |
CN104463304B (zh) | 2018-03-27 |
EP3032851A1 (en) | 2016-06-15 |
JP2016533137A (ja) | 2016-10-20 |
US20160234680A1 (en) | 2016-08-11 |
CN104463304A (zh) | 2015-03-25 |
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