KR20230084747A - Device for transmitting photographed-pictures in real-time - Google Patents

Abstract

The present invention relates to a device for transmitting real-time photo information data, which comprises: a camera device which captures an image in real time to generate image data; a GPS device which generates location data by receiving radio waves from a GPS satellite; a central processing unit which receives the image data and the location data, generates transmission data by combining the respective data, and processes the generated transmission data; and a wireless transmission device which automatically connects to an external server with a specific IP and transmits the processed data for transmission through an antenna. The data of the original photo taken by a camera and the real-time location information data are uploaded to the server connected to a specific IP address, such that the photo can be shared online and work using the photo is conveniently performed.

Description

Real-time photo information data transmission device {DEVICE FOR TRANSMITTING PHOTOGRAPHED-PICTURES IN REAL-TIME}

The present invention relates to a real-time photo information data transmission device.

As mobile phones and digital cameras have become commonplace, awareness of cameras has spread throughout our lives.

In addition, with the diversification and low change of homepages, blogs, or minihompies, users require cameras having various functions, and as cameras are applied to various industries, diversity of functions is also required.

Conventionally, when taking a picture in a device such as a camera, it is stored in an internal memory or an external memory, and when editing a picture or storing a picture in a PC, a method of using a separate memory reader has been used.

This conventional method is a method in which the memory itself has a function such as a short-range communication technology (WiFi, Bluetooth), so that when a picture is taken, it is stored in a user's mobile phone using short-range communication. This has a problem in that the battery consumption of the camera is fast and the communication speed is quite slow, so the time to transmit one picture is increased. Accordingly, there is a problem in that time and efficiency are greatly reduced in using this method for work.

Publication No. 10-20021-0102878 (Publication date: 2001. 11. 17)

The purpose of the embodiments of the present invention for improving the above-mentioned problem is to improve the conventional method of storing photos in a PC, specifying original photo data and real-time location information data taken by a camera through a wireless communication module (4G LTE). It is to provide a real-time photo information data transmission device that connects to a server of an IP address and transmits the data.

In order to achieve the above object, an apparatus for transmitting real-time photo information data according to an embodiment of the present invention includes a camera device that generates image data by capturing images in real time; a GPS device that generates location data by receiving radio waves from GPS satellites; a central processing unit that receives the image data and location data, generates data for transmission by synthesizing the respective data, and processes the generated data for transmission; and a wireless transmission device that automatically connects to an external server having a specific IP address and transmits the processed data for transmission through an antenna.

The location data includes latitude, longitude, and altitude information, the camera device includes an external or built-in memory for storing the generated image data, and the central processing unit receives and stores the image data and location data. It is characterized in that it is provided with an external or built-in memory to receive and store the image data and location data, and at the same time control to transmit the image data and location data to an external server through the wireless transmission device after processing the data.

The wireless transmission device is connected to the expansion port of the central processing unit for connection to an external server having a specific IP, and an antifouling coating layer made of an antifouling coating composition is applied to the surface of the wireless transmission device by a spray method. The antifouling coating layer has a thickness in the range of 900 to 2000 Å (Angstrom), and the antifouling coating composition contains tetraethyl ammonium hydroxide and methyl ethyl ketone (MEK) in a ratio of 1:0.01 to 1:2. It is composed of a molar ratio, and the tetraethyl ammonium hydroxide and methyl ethyl ketone (MEK) are characterized in that they have a weight ratio of 1 to 10 percent with respect to the total aqueous solution.

An apparatus for transmitting real-time photo information data according to an embodiment of the present invention uploads original photo data and real-time location information data captured by a camera to a server connected to a specific IP address, so that it is convenient to share photos online and work using them. can do

1 is a diagram showing an apparatus for transmitting real-time photo information data according to an embodiment of the present invention.
2 is a schematic block diagram of an apparatus for transmitting real-time photo information data according to an embodiment of the present invention.
FIG. 3 is a diagram for explaining a data reception process of the GPS device of FIG. 2 .
FIG. 4 is a block diagram illustrating a battery module included in the central processing unit of FIG. 2 .

The present invention as described above will be described in detail through the accompanying drawings and embodiments.

It should be noted that technical terms used in the present invention are only used to describe specific embodiments and are not intended to limit the present invention. In addition, technical terms used in the present invention should be interpreted in terms commonly understood by those of ordinary skill in the art to which the present invention belongs, unless specifically defined otherwise in the present invention, and are excessively inclusive. It should not be interpreted in a positive sense or in an excessively reduced sense. In addition, when the technical terms used in the present invention are incorrect technical terms that do not accurately express the spirit of the present invention, they should be replaced with technical terms that those skilled in the art can correctly understand. In addition, general terms used in the present invention should be interpreted as defined in advance or according to context, and should not be interpreted in an excessively reduced sense.

Also, singular expressions used in the present invention include plural expressions unless the context clearly dictates otherwise. In the present invention, terms such as "consisting of" or "comprising" should not be construed as necessarily including all of the various elements or steps described in the invention, and some of the elements or steps are included. It should be construed that it may not be, or may further include additional components or steps.

In addition, terms including ordinal numbers such as first and second used in the present invention may be used to describe components, but components should not be limited by the terms. Terms are used only to distinguish one component from another. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element, without departing from the scope of the present invention.

Hereinafter, a preferred embodiment according to the present invention will be described in detail with reference to the accompanying drawings, but the same or similar components are assigned the same reference numerals regardless of reference numerals, and redundant description thereof will be omitted.

In addition, in describing the present invention, if it is determined that a detailed description of a related known technology may obscure the gist of the present invention, the detailed description will be omitted. In addition, it should be noted that the accompanying drawings are only for easily understanding the spirit of the present invention, and should not be construed as limiting the spirit of the present invention by the accompanying drawings.

1 is a diagram showing a real-time photo information data transmission device according to an embodiment of the present invention, FIG. 2 is a block diagram schematically showing a real-time photo information data transmission device according to an embodiment of the present invention, and FIG. FIG. 2 is a diagram for explaining a data reception process of the GPS device, and FIG. 4 is a block diagram illustrating a battery module included in the central processing unit of FIG. 2 .

As shown in FIGS. 1 and 2 , an apparatus for transmitting real-time photo information data according to an embodiment of the present invention transmits original photo data taken by a camera and real-time location information data through a wireless communication module (4G, LTE, etc.). It is a device that connects to a server of a specific IP address and transmits data via a specific IP address, and includes a camera device 10, a GPS device 30, a central processing unit 20, and a wireless transmission device 40 for this purpose.

Hereinafter, the camera device 10, the GPS device 30, the central processing unit 20, and the wireless transmission device 40 are described as separate components, but are not limited thereto, and the camera device 10 In this case, the GPS device 30, the central processing unit 20, and the wireless transmission device 40 may be implemented in a built-in or external form. For example, in the real-time photo information data transmission device according to an embodiment of the present invention, the camera device 10 includes a card reader device (Micro SD), a wireless communication module device, an internal memory (SSD), and an internal control CPU (ARM Core). It may be implemented to transmit image data together with location data to an external access network (ie, an external server 50 such as an Internet cloud server) in real time.

The camera device 10 is a device that captures images in real time and generates image data.

The camera device 10 may have the same or similar configuration as a camera module mounted in a general camera, and an image sensor is mounted to capture an image, generate image data, and transmit the image data to the central processing unit 20 .

The camera device 10 includes an external or built-in memory (for example, a memory (Micro SD) or flash memory) that stores image data in real time. For example, the camera device 10 may allow original photo data to be stored by inserting a memory reader device or through an external interface.

In addition, the camera device 10 reads image data, which is original photo data, from the memory and transmits them to the central processing unit 20 as soon as the storage in the memory is finished.

The camera device 10 may be a camera device that processes image frames such as still images or moving images obtained by an image sensor (camera module or camera). That is, corresponding image data obtained by the image sensor is encoded/decoded according to the codec (CODEC) to conform to each standard. For example, the camera device 10 captures an object (or subject) and outputs a video signal corresponding to the captured image (subject image).

Also, the image frames processed by the camera device 10 may be stored in an external or built-in memory and transmitted to the central processing unit 20 at the same time.

The GPS device 30 is a device that generates location data by receiving radio waves from GPS satellites, and receives DNSS (Defence Navigation Satellite System), that is, real-time location information data through an external antenna to receive external or internal memory (eg, For example, it is stored in a memory (Micro SD) or flash memory), and as soon as the storage ends, the real-time location data is read from the memory and transmitted to the central processing unit 20.

On the other hand, GPS (Global Positioning System) is a means of measuring a position using artificial satellites, and the measured position information is used in various application fields such as navigation, geodetic surveying, and map production. The GPS device 30 obtains location data of an observation point by receiving radio waves emitted from GPS satellites and observing the required time to reach the observation point.

To this end, the GPS device 30 includes a high frequency unit 31, a signal processing unit 32, and a reception control unit 33, as shown in FIG.

The high frequency unit 31 converts a signal having a high frequency (eg, 1.2 or 1.5 GHz) received by an antenna into a low frequency signal that is easy to handle.

The signal processing unit 32 performs despreading to restore the spectrum spread to its original state, and obtains a signal sent from a GPS satellite and a pseudorange.

The reception control unit 33 calculates the current position from the signal obtained from the signal processing unit 32 and the pseudorange. The location data obtained through this operation is transmitted to the central processing unit 20 .

At this time, the location data includes latitude, longitude and altitude information.

Meanwhile, since the configuration and operation of the GPS device 30 are well known to those skilled in the art, a detailed description thereof will be omitted.

The central processing unit 20 receives image data and location data, generates data for transmission by synthesizing the respective data, and processes the generated data for transmission.

That is, the central processing unit 20 performs compression and signal processing of image data transmitted from the camera device, and transmits or stores synthesized data obtained by synthesizing the image data and location data transmitted from the GPS device 30. It performs a control operation and controls overall operations of the camera device 10 and the GPS device 30 .

More specifically, the central processing unit 20 performs a function of compressing image data photographed by the camera device 10 into still image data, and performs a function of storing the compressed still image data in a memory. In addition, the central processing unit 20 generates synthesized data obtained by synthesizing location data information obtained from the GPS device 30 and image data. Thereafter, the central processing unit 20 transmits the stored image data or synthesized data to the external server 50 through the wireless transmission unit 40 . The wireless transmission may be performed in real time, or after performing an operation of storing in a memory first, the entire stored data may be transmitted at once.

To this end, the central processing unit 20 includes an external or internal memory for receiving and storing image data and location data.

The central processing unit 20 receives and stores image data and location data in a memory and at the same time controls to transmit these data to the external server 50 through the wireless transmission unit 40 after data processing. In other words, the central processing unit 20 stores the original data of the photo taken by the camera device 10 in a specific memory space, and at the same time reads and stores the original data of the photo together with the location data in real time, and stores the corresponding data. They are controlled to be transmitted in real time to the external server 50 using the wireless transmission device 40.

The wireless transmission device 40 automatically connects to an external server 50 having a specific IP through a wireless communication network and transmits data for transmission processed by the central processing unit 20 through a dedicated antenna mounted outside. . That is, the wireless transmission device 40 automatically connects to the address of the external server 50 connected to a specific IP address, and uploads image data and location data, which are original photo data, to the external server 50 in real time. . The image data and location data uploaded in this way are stored and recorded in a storage device (SSD) or HDD disk storage device provided inside the external server 50 .

To this end, the wireless transmission device 40 may include a modem chip, an RF chip, and an antenna, and other types of communication equipment used for general wireless communication may be included.

Here, wireless Internet technologies include Wireless LAN (WLAN), DLNA (Digital Living Network Alliance), Wireless Broadband (Wibro), WiMAX (World Interoperability for Microwave Access: Wimax), HSDPA (High Speed Downlink Packet Access) ), High Speed Uplink Packet Access (HSUPA), IEEE 802.16, Long Term Evolution (LTE), Long Term Evolution-Advanced (LTE-A), Wireless Mobile Broadband Service (WMBS), etc. In addition, the wireless transmission device 40 transmits and receives data according to at least one wireless Internet technology within a range including Internet technologies not listed above. In addition, short-range communication technologies include Bluetooth, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, and Near Field Communication (NFC). , Ultra Sound Communication (USC), Visible Light Communication (VLC), Wi-Fi, Wi-Fi Direct, and the like may be included.

In addition, the wireless transmission device 40 can mutually transmit information with an arbitrary terminal through a universal serial bus (USB).

In addition, the wireless transmission device 40 complies with technical standards or communication methods for mobile communication (eg, Global System for Mobile communication (GSM), Code Division Multi Access (CDMA), Code Division Multi Access 2000 (CDMA2000)) , EV-DO (Enhanced Voice-Data Optimized or Enhanced Voice-Data Only), WCDMA (Wideband CDMA), HSDPA (High Speed Downlink Packet Access), HSUPA (High Speed Uplink Packet Access), LTE (Long Term Evolution), LTE -A (Long Term Evolution-Advanced), etc.) to transmit and receive radio signals with the external server 50 on a mobile communication network.

Meanwhile, the central processing unit 20 may include a plurality of control buttons (not shown) in order to receive, process, and execute user commands.

The control buttons include a time setting function button, a wireless transmission function button, and an image capture button.

The time setting button is used for the user to arbitrarily set the shooting time to 1 minute, 3 minutes, 5 minutes, etc., and the camera device randomly captures images according to the set time.

The wireless transmission function button is used to transmit a captured image in real time or to transmit all image data or composite data stored in a memory at one time by a wireless transmission device.

The image capture button is a button used when a user arbitrarily captures an image.

The central processing unit 20 includes memory provided in an external or internal form to store image data, location data, and composite data. Here, the memory may be an external memory or an internal memory, and includes an insertion hole for a memory card or a USB memory stick.

Meanwhile, the wireless transmission device 40 is connected to an expansion port of the central processing unit 20 for connection with an external server 50 having a specific IP.

The expansion port is a part that can connect an external device to add new functions to the central processing unit 20, for example, a compact flash interface, a USB port, a parallel port, a serial port, a PCI bus, An extension port such as an ISA bus may be applied. In addition, in the present invention, a storage device such as a memory card that can be installed in an expansion port of the central processing unit 20 may be replaced with a wireless modem capable of performing the same functions as the memory card.

The real-time photo information data transmission device according to an embodiment of the present invention configured as described above is a device capable of reading and storing original photo data obtained from a camera in real time and transmitting it in real time through wireless communication, and is a storage device linked to a specific IP server. using the method stored in Through this, it is possible to improve the conventional method of storing photos in a PC, and it is possible to share photos online and conveniently perform work using them.

That is, conventionally, it is a tool for moving photo data stored in a memory mounted on a camera to a PC, separating the memory separately each time, transferring it to a PC using a dedicated reader, and connecting the photo data stored in the PC to the Internet. However, this method has a problem in that the photos stored in the memory cannot be stored in the cloud unless the memory is separately separated and moved to the PC.

Accordingly, in order to solve such an inconvenient technique, a real-time photo information data transmission device according to an embodiment of the present invention inserts a memory reader device into the camera instead of a memory card mounted in the camera or transmits original photo data through an interface between the camera and the device. At the same time, it is transmitted to an external server through a central processing unit and a wireless transmission device, and the transmitted original image data is designed to be stored in the external server's internal memory (SSD) or HDD (hard disk) set to a specific IP address. . To this end, the present invention uses an external server space capable of storing image (photo) data through a real-time photo information data transmission device.

Meanwhile, an antifouling coating layer made of an antifouling coating composition may be applied to the surface of the wireless transmission device 40 by a spray method so as to effectively prevent and remove contaminants.

The antifouling coating composition contains tetraethyl ammonium hydroxide and methyl ethyl ketone (MEK) in a molar ratio of 1:0.01 to 1:2, and the total content of tetraethyl ammonium hydroxide and methyl ethyl ketone is the total aqueous solution It is 1 to 10% by weight relative to.

The molar ratio of tetraethyl ammonium hydroxide and methyl ethyl ketone is preferably 1:0.01 to 1:2. If the molar ratio is out of the above range, the coating property of the antifouling coating layer is reduced or moisture adsorption on the surface after coating is reduced. There is a problem that the coating film is removed by increasing.

The tetraethyl ammonium hydroxide and methyl ethyl ketone are preferably 1 to 10% by weight in the total aqueous solution of the composition. If the content is less than 1% by weight, the coating property of the antifouling coating layer is reduced, and if it exceeds 10% by weight, Precipitation of crystals is likely to occur due to an increase in the thickness of the coating film.

On the other hand, as a method of applying the present antifouling coating composition on the surface of the wireless transmission device 40, it is preferable to apply it by a spray method. In addition, the final coating film thickness on the surface of the wireless transmission device 40 is preferably 700 to 2500 Å, more preferably 900 to 2000 Å. If the thickness of the coating film is less than 700 Å, there is a problem of deterioration in the case of high-temperature heat treatment, and if it exceeds 2500 Å, there is a disadvantage in that crystallization of the coated surface is easy to occur.

In addition, this antifouling coating composition can be prepared by adding 0.1 mol of tetraethyl ammonium hydroxide and 0.05 mol of methyl ethyl ketone to 1000 ml of distilled water, followed by stirring.

The reason why the ratio of the constituent components and the thickness of the coating film were numerically limited as described above was that the present inventors showed the optimal antifouling coating effect at the ratio as a result of analyzing the test results while repeating several failures.

Although not shown, the central processing unit 20 may include a battery module ( 200 in FIG. 4 ) that supplies power required for operation.

The battery module 200 is charged with electricity supplied to an external power supply unit (or primary battery), and supplies the charged electricity to the central processing unit 20 or each component included therein.

As shown in FIG. 4, the battery module 200 is a module connected to the battery unit 280 including a plurality of cells, and charges the battery unit 280 with commercial power supplied to load facilities, and power failure. When an occurrence is detected, the battery unit 280 is discharged to supply power to the load equipment, and cell balancing is performed when the temperature of the battery unit 280 is below a preset temperature or when the voltage difference between cells is above a preset value. .

The battery unit 280 may include a plurality of battery cells (not shown), and each battery cell may be connected in a suitable form for supplying AMI backup power in series, parallel, or a series/parallel mixed method.

The battery cell may include a lithium iron phosphate (LiFePO ₄ ) secondary battery. These lithium iron phosphate (LiFePO ₄ ) secondary batteries can be recharged more than 1,000 times even after discharging to 90% of the total capacity, and have a lifespan that is three times longer than that of conventional lead-acid batteries, and even after being charged and discharged more than 1,000 times, they can be recharged more than 80% of the original capacity. it is possible to maintain Conventional lithium ion and lithium polymer batteries may cause rapid temperature rise and explosion during overcharge and overdischarge, but lithium iron phosphate batteries do not explode during overdischarge and overcharge and are only damaged internally, so they are relatively safe. .

The battery module 200 charges the battery unit 280 with commercial power supplied to load facilities, discharges the battery unit 280 when a power outage is detected, and supplies power to the load facilities, and the battery unit 280 Cell balancing is performed when the temperature of the cell is below a preset temperature or when the voltage difference between cells is above a preset value.

To this end, the battery module 200, as shown in FIG. 3, includes a switch unit 210, a converter 220, an inverter 230, a temperature sensor 240, a cell balancing circuit unit 250, and a cell voltage difference measuring unit ( 260) and a battery controller 270.

The switch unit 210 receives power from an external commercial power source or battery unit 280 and transmits it to a load facility. The switch unit 210 operates to transmit external commercial power to the load facility according to the first control signal of the battery control unit 270, or the inverter 230 according to the second control signal of the battery control unit 270 when a power failure occurs. ) through which the AC power supplied from the battery unit 280 is connected to the load facility.

The converter 220 receives some power from external commercial power under the control of the battery control unit 270, converts it into direct current, and transfers it to the battery unit 280 so that the battery unit 280 is charged.

The inverter 230 converts DC power supplied from the battery unit 280 into AC and transfers the switch unit 210 to AC power supplied from the battery unit 280 through the switch unit 210 to the load. It plays a role as a means of transformation and mediation provided by facilities.

The temperature sensor 240 may measure the internal temperature of the battery unit 280, and a measurement temperature range of -30°C to 80°C is suitable, but the specific temperature range is not limited.

The cell balancing circuit unit 250 performs cell balancing of the battery unit 280 . The cell balancing circuit unit 250 may be implemented to operate in at least one of a passive method and an active method. Here, the passive method balances the battery cells by dissipating the charge of the overcharged battery cell through individual resistors, and the active method supplies more current to the undercharged battery cell with individual chargers to reduce the gap between the battery cells. is a way to balance the In the case of using a battery with a relatively small capacity, such as a surveillance camera system, it is preferable to adopt a passive method. Since it is suitable for raising the temperature, it is more preferable to adopt a passive method.

The cell voltage difference measuring unit 260 measures the voltage difference between each cell of the battery unit 280 and transfers the measured voltage difference value to the battery controller 270 .

The battery controller 270 controls the converter 220 to charge the battery unit 280 with the DC power converted through the converter 220, and supplies the DC power charged to the battery unit 280 when a power failure occurs. The inverter 230 is controlled to be transmitted to the switch unit 210 through the inverter 230, and the switch unit 210 is controlled to transfer the AC power provided through the inverter 230 to the load facility.

The battery control unit 270, if the temperature value measured by the temperature sensor 240 is less than or equal to a preset reference temperature value, or the voltage difference measured by the cell voltage difference measurement unit 260 is greater than or equal to a preset reference voltage difference, the cell balancing circuit unit ( 250) controls to perform a cell balancing operation.

To this end, the battery controller 270 operates in a low temperature mode for a pre-stored period. During this low temperature mode operation, the measured temperature value received from the temperature sensor 240 is compared with a preset reference temperature value (approximately -20°C). When the measured temperature value is less than or equal to the reference temperature value, the cell balancing circuit 250 is controlled to forcibly perform the cell balancing operation, resulting in heat generated by the cell balancing operation of the cell balancing circuit 250. The internal temperature of the battery unit 280 is raised to approximately 0°C so that the battery module 200 operates normally.

In addition, the battery controller 270 compares the measured temperature value received from the temperature sensor 240 with a preset reference temperature value (approximately -20 ° C), and if the measured temperature value exceeds the reference temperature value, the cell voltage difference After obtaining the measurement voltage difference by controlling the measurement unit 250 to operate, comparing the obtained measurement voltage difference with a preset reference voltage difference (approximately 30 mV), and if the measurement voltage difference is greater than or equal to the reference voltage difference, the cell balancing circuit unit 250 ) By controlling the cell balancing circuit 250 to forcibly perform the cell balancing operation, the internal temperature of the battery unit 280 is raised to approximately 0° C. due to heat generated by the cell balancing operation of the cell balancing circuit 250. The battery module 200 operates normally.

In addition, the battery control unit 270, as a result of comparison between the measured voltage difference received from the cell voltage difference measuring unit 250 and a preset reference voltage difference (approximately 30 mV), if the measured voltage difference is less than the reference voltage difference, the preset time ( After about 1 hour to 2 hours), the operation of the low temperature mode can be resumed.

In the above, preferred embodiments according to the present invention have been shown and described. However, the present invention is not limited to the above-described embodiments, and various modifications can be made by anyone having ordinary knowledge in the technical field to which the present invention belongs without departing from the gist of the present invention appended within the scope of the claims. .

10: camera device 20: central processing unit
30: GPS device 40: wireless transmission device
50: external server 200: battery module

Claims (3)

a camera device that captures images in real time to generate image data;
a GPS device that generates location data by receiving radio waves from GPS satellites;
a central processing unit that receives the image data and location data, generates data for transmission by synthesizing the respective data, and processes the generated data for transmission; and
A real-time photo information data transmission device comprising a wireless transmission device that automatically connects to an external server having a specific IP and transmits the processed data for transmission through an antenna.
According to claim 1,
The location data includes latitude, longitude and altitude information,
The camera device includes an external or internal memory for storing the generated image data,
The central processing unit is provided with an external or built-in memory for receiving and storing the image data and location data, receiving and storing the image data and location data, processing the data, and transmitting the image data and location data to an external server through the wireless transmission device. Real-time photo information data transmission device, characterized in that for controlling to.
According to claim 1,
The wireless transmission device is connected to the expansion port of the central processing unit for connection to an external server having a specific IP, and an antifouling coating layer made of an antifouling coating composition is applied to the surface of the wireless transmission device by a spray method. The antifouling coating layer has a thickness in the range of 900 to 2000 Å (Angstrom), and the antifouling coating composition contains tetraethyl ammonium hydroxide and methyl ethyl ketone (MEK) in a ratio of 1:0.01 to 1:2. Composed of a molar ratio, the tetraethyl ammonium hydroxide and methyl ethyl ketone (MEK) have a weight ratio of 1 to 10 percent with respect to the total aqueous solution, characterized in that the real-time photo information data transmission device.

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