BG2740U1 - Electronic reproduction device - Google Patents

Abstract

The electronic data reproduction device can find application in the book publishing and, in particular, in the publishing of teaching aids. The device according to the utility model includes a display (1) and a control unit (2) connected to the processor (3), which in turn is connected to a power supply unit (4). To the processor (3) are connected further random access (8) and system (9) memory as well as a memory for information storing (11) which is connected to the processor (3) bidirectionally via a data transmission line (12) and further with a command line for reading (13) and to a second command line a line for recording and deleting (14). To the processor (3) is provided a recording port (16) connected to it via a line for data delivery (17). On the command line for recording and deleting (14) is mounted a switch (15) for interrupting, and on the data delivery line (17) is mounted a second switch (18) for interrupting this line (17). To the two switches (15 and 18) is designed a control line (19) by the processor (3) to provide the interruption of each of the lines (14 and 17) on which they are mounted. In another exemplary embodiment, the two switches (15 and 18) are formed as a general two-way switch (20) mounted simultaneously on the recording and deleting command line (14) and on the data delivery line (17). The two switches (15 and 18) as well as the general two-way switch (20) may be electromechanical or type of bridge switches with fuse element. 5 claims, 2 figures

Description

This utility model relates to an electronic device for reproducing information and may find application in book publishing, in particular for the issuing of educational aids for use in schools, as well as for self-preparation, for the creation and use of electronic materials, documents and archives.

BACKGROUND OF THE INVENTION

The prior art according to the article "T1 and AllGo Embedded Launch E-Tab Tablet Reference Design Powered by ΤΙ AM3354 Processor" published in the online journal CNXSoft - Embedded Systems News, p.15, November 1st, 2012 [1] is known electronically Playback Device - A tablet presented by Texas Instruments and Allgo Embedded. The well-known device [1] includes a display of type 7 ”WVGA TFT LCD and control unit, respectively connected to a processor of type TI's AM3354 ARM Cortex-A8, the operating system being Android ICS 4.0 and also capable of working with BSP Windows Embedded Compact7, WinCE 6.x., Android Jelly Bean, Linux / Ubuntu. The processor, in turn, is connected to a power supply unit with a Li-Ion 3.7V Norn 3ZOOotAN battery, DC external power jack and a start-stop button. The processor also includes RAM, 512MB DDR3 RAM, 512MB Nand Flash memory and a 4GB Micro SD card, as well as an orientation sensor. The memory for storing information is connected to the processor bidirectionally via a data link and additionally with a first command line read and a second command line write and delete. A processor is also provided with a recording port connected to it via a data line and an audio decoder connected to speakers and jacks for connecting headsets and / or microphones. A number of peripheral communication devices (interfaces) are also connected to the processor, such as WI-FI, Ethernet, Bluetooth, various USB ports and a USB hub connected to a camera, and a network card.

In the known [1] electronic device, the power unit, which powers the processor, is activated via the start-stop button, it reads the start commands from the system memory, executes these commands and starts the tablet. The information needed by the user is most often stored outside the internal memory of the device and the user needs to obtain it from various external sources, such as SD card, USB flash drive, via direct streaming or download via WI-FI, Ethernet and Bluetooth devices . Using one of these devices, through the management applications, the user sends a command to the processor, which in turn sends a command to the memory for storing information to record the information delivered to the memory. Once the desired information is already available, the user sends commands via the control unit to the processor, which in turn sends a command to the memory to store the information to read it. The processor processes the information read from the memory through its memory and plays it on the display .

At any time, the user can change or delete the information stored in the memory for storing information, as well as save this information to other memories using the presence of a USB, SD, network or wireless port. The ability to connect between the processor and all the memories inside or outside the device enables the recording, deletion and rewriting of content by the tablet user.

The well-known device [1] is extremely useful for training in educational establishments as well as for the self-preparation of individuals, as it can store and provide large volumes of training materials, such as textbooks, studies, documents, articles, facts, etc. At the same time, when training is applied, it is undesirable for the user to even unknowingly be able to delete the information or part of it stored in the memory of the storage device, since this is most often educational material, documents and facts. Even more desirable is the casual user of information to record new information or change the content of study materials, documents, archives or facts.

The technical nature of the utility model

The present utility model is intended to provide an electronic device for reproducing information in which the information stored therein is securely and securely protected, avoiding the possibility, even unknowingly, of deleting the information or part of it stored in the memory of device, and prevent the content from being tampered with.

The proposed electronic playback device includes a display and control unit, respectively connected to a processor, which in turn is connected to a power unit with a battery provided, an external power jack and a start - stop button. The processor also includes RAM, system memory, and memory storage, as well as an orientation sensor. The memory for storing information is connected to the processor bidirectionally via a data link and additionally with a first command line read and a second command line write and delete. A processor is also provided with a recording port connected to it through a data line. According to the present utility model, a breaker for interrupting this line is mounted on the command line for recording and deleting, between the processor and the memory for storing information, and a second circuit breaker is mounted on the data line between the recording port and the processor. interruption of this line. Both switches, respectively on the command line for recording and deletion and on the data line, are provided with a control line by the processor to ensure the interruption of each of the lines on which the respective switches are mounted.

In one embodiment, the two switches are formed into a common two-line switch mounted simultaneously on the write and delete command line, between the processor and the memory for storing information, and on the data line, between the write port and the processor. The two-line circuit breaker is also connected to the processor via the control line to ensure interruption of each of the lines on which the circuit breaker is mounted.

An embodiment is possible wherein the circuit breaker mounted on the write and delete command line between the processor and the memory for storing information, and the second circuit breaker mounted on the data line between the recording port and the processor are electromechanical. The two-line circuit breaker mounted simultaneously on the write and delete command line between the processor and the storage memory and on the data line between the recording port and the processor is also electromechanical.

An embodiment is also possible whereby the two circuit breakers as well as the two-line circuit breaker mounted on the command line for recording and deletion and on the data line are designed as fused bridge circuits.

The advantages of the electronic device for reproducing information according to the present utility model is that it provides reliable and secure protection of the information stored therein, avoiding the possibility, even unknowingly, of deleting the information or part of it stored in the memory of device and prevented the possibility of unauthorized modification of its contents. This is due to the ability to disconnect the processor and memory and restrict access to external databases through wired and wireless ports.

Explanation of the annexed figures

This utility model is explained in more detail by the accompanying figures, which, without limiting it, are as follows:

Figure 1 is a block diagram of an electronic device for reproducing information in one exemplary embodiment with two switches mounted respectively on the command line for recording and deletion and on the data delivery line;

Figure 2 is a block diagram of the electronic device for reproducing information in another exemplary embodiment with a common two-line switch mounted simultaneously on the command line for recording and deletion and on the data delivery line.

Exemplary implementation of the utility model

The electronic reproduction apparatus shown in Figure 1 and Figure 2 consists

2740 Ul from display 1, in one particular embodiment, an 8 ”LCD screen, and a control unit 2, with capacitive touch screen connected respectively to processor 3, in one preferred embodiment, in particular the AM335x ARM Cortex-A8 type. The processor 3, in turn, is connected to a power supply unit 4 with parameters 5V, 2.5 A and a battery 5 with parameters 3.7V 3OOTAN, a jack 3.5 mts for external power supply 6 and a start-stop button 7 are connected to it. also RAM 8 type DDR3 512MB, system memory 9 type DDR3 256MB, and orientation sensor 10 type 3Axis-Accelerometer Sensor. The processor 3 also includes 1GB of NAND Flash memory for storing information 11 that is integrated into the device. The memory for storing information 11 is connected to the processor 3 bidirectionally via a data line 12. Additionally, the memory for storing information 11 is connected to the processor 3 with a first command line for reading 13 and a second command line for writing and deleting 14. All elements of the electronic playback device according to this utility model are housed in a common housing.

On the write and delete command line 14, between the processor 3 and the information storage memory 11, a breaker 15 is provided to interrupt the write and delete line 14. A record port 16 is provided to the processor 3 connected thereto via a line. for supplying data 17, a second switch 18 for interrupting the data supply line 17 is mounted on the line 17 between the recording port 16 and the processor 3 to the two switches 15 and 18 respectively on the command line for recording and deleting 14 and on the data line 17, is pre seen control line 19 from processor 3 to ensure interruption of each of lines 14 and 17.

According to another possible embodiment of the electronic reproduction apparatus given in Figure 2, the two switches 15 and 18 are formed as a common two-line switch 20 mounted simultaneously on the write and delete command line 14 between the processor 3 and the information storage memory 11, and on the data delivery line 17, between the recording port 16 and the processor 3 of the electronic device. The processor 3 of the device is coupled to the two-line switch 20 via the control line 19 to provide interruption to each of the lines 14 and 17.

The circuit breakers 15,18 used, as well as the two-line circuit breaker 20 located respectively on the command line for recording and deletion 14 and on the data line 17, are classic electromechanical circuit breakers used in electronics and electrical engineering. In particular, electromechanical circuit breakers 15, 18 and 20 are designed as fused bridge circuits, widely used in the programming of PROM chips, operating typically with 5 V voltage and single pulse voltage for melting and breaking the 12V wire.

Operation of the electronic playback device

The operation of the electronic playback device is as follows.

Using the start-stop button 7 of the electronic playback device, the power supply unit 4 is activated, the processor 3 power is supplied, it reads the start commands from the system memory 9, executes them and starts the device, giving access to its management applications. through the control unit 2.

The playback information is stored in the memory for storing information 11 of the electronic playback device through the recording port 16 and through the data line 17 on which the switch 18 is mounted. The switch 18 is not activated and the processor 3 receives and processes the information from the write port 16. The processor 3 then sends a write command to the memory for storing information 11 via the command line for recording and deletion 14, and the received information is stored in the memory 11 by 12. If the recording process is unsuccessful, the action is repeated until successful recording of the desired information in the data storage memory 11. After a correct recording in the data storage memory 11, by a command from the controller block 2 to processor 3, the latter transmits a command to the switch 18 along the control line 19 to mechanically interrupt the data line 17 connecting the recording port 16 and the processor 3. Simultaneously with this command from the processor 3 through the control A command 19 is also provided to the mechanical interrupt switch 15 and the write and delete command line 14 to the information storage memory 11.

When transmitting these commands to circuit breakers 15 and 18, or respectively to the two-line circuit breaker 20, in another exemplary embodiment, in the case where these circuit breakers 15,18 and 20 are of the type, fused circuit breakers, a peak is passed to them an impulse higher than the operating voltage, causing the fuse, the bridge to blow, and the corresponding connection is broken. Usually the operating voltage in PROM circuits is 5V and the peak pulse is 12V. These voltages are exemplary, and in the implementation of circuit breakers 15, 18 or 20, they may be of other magnitudes.

In this way, the electronic playback device is in a state where it is impossible to write and read through the recording port 16, as well as to delete and modify the contents in the memory for storing information 11, since access to this memory 11 is blocked from recording port 16 and the ability to delete its contents by issuing similar commands from the control unit 2 of the device. The only possible actions are to read only the memory for storing information 11 from the processor 3 of the electronic device itself and to play it on the display 1.

The user sends commands to the processor 3 through the control unit 2, the processor 3 processes the stored information in the memory for storing information 11, through the RAM 8 and plays it on the display 1.

During use, by rotating the display 1 of the electronic playback device, the orientation sensor 10 is triggered and the image is reproduced with the appropriate orientation to the user.

Claims (5)

Claims 1. An electronic playback device comprising a display and a control unit connected respectively to a processor, in turn connected to a power unit with a battery provided therein, an external power jack and a start-up button, to which the processor also has RAM, system memory and memory for storing information, as well as an orientation sensor, wherein the memory for storing information is connected to the processor bidirectionally via a data link and additionally with a first read command line and a second a recording and deletion line, the processor also having a recording port associated therewith by a data line, characterized in that, on the write and delete command line (14), between the processor (3) and the memory for storing information (11), a circuit breaker (15) is installed to interrupt the line (14), and a second is mounted on the data line (17), between the recording port (16) and the processor (3). a circuit breaker (18) for interrupting this line (17), to which at the two circuit breakers (15 and 18) respectively on the command line and delete (14) and on the data line (17), a control line (19) is provided by the processor (3) to ensure interruption of each of the lines (14 and 17) on which the respective switches ( 15 and 18). An electronic reproduction device according to claim 1, characterized in that the two switches (15 and 18) are formed into a common two-line switch (20) mounted simultaneously on the command line for recording and erasing (14) between the processor (3 ) and the memory for storing information (11), and on the data line (17), between the recording port (16) and the processor (3), with the two-line switch (20) connected to the processor (3) and via control line (19) for interrupting each of the lines (14 and 17) on which it is mounted the switch (20). An electronic reproduction device according to claim 1, characterized in that the switch (15) mounted on the write and delete command line (14) between the processor (3) and the information storage memory (11) and the second a switch (18) mounted on the data line (17) between the recording port (16) and the processor (3) are electromechanical. An electronic playback device according to claim 2, characterized in that the two-line switch (20) mounted simultaneously on the write and delete command line (14) between the processor (3) and the information storage memory (11), and on the data line (17), between the recording port (16) and the processor (3) is electromechanical. An electronic reproduction device according to claim 3 or 4, characterized in that the switch (15), the second switch (18) and the two-line switch (20) are mounted on the command line for recording and erasing (14) and on the line for data delivery (17) are designed as fused bridge circuits.