CN2575783Y - Advertising poster paper holder - Google Patents

Abstract

The utility model is a portable microelectronic chip English enlightenment learning machine, which belongs to daily life consumption electronic products. It is composed of a casing, a circuit board, a liquid crystal display, and a button panel. The panel is connected to corresponding points of the circuit board through relevant signal lines; its circuit is composed of voice signal processing chip, keyboard array, liquid crystal display interface circuit, storage circuit, serial interface circuit, voice drive circuit and loudspeaker through their respective signal lines and voice The signal processing chip is electrically connected with each other, and the serial interface is also connected with an external computer through a signal cable. The utility model is small in size, light in weight, convenient to carry, low in power consumption, simple in use and operation, strong in anti-interference ability, low in cost, and convenient for popularization and application.

Description

Portable microelectronic chip English enlightenment learning machine

(1) Technical field

The utility model is a portable microelectronic chip English enlightenment learning machine, which belongs to digital voice signal processing and voice synthesis technology, and is a consumer electronic product for daily life.

(2) Background technology

Most of the traditional enlightenment education machines or English language learning machines use tapes or CDs as storage media. When using them, special playback equipment (such as players, CD players, etc.) must be used. Therefore, traditional language learning machines have the following disadvantages: (1) large volume, heavy weight, and inconvenient to carry; (2) high power consumption; (3) complicated operation and use, which is not convenient for preschool children (4) There are many components and parts, and the cost is high; (5) The anti-interference ability and shockproof performance are poor.

(3) Contents of the invention

The purpose of this utility model is to overcome and solve the above-mentioned existing language learning machines that have large volume, heavy weight, inconvenient portability, high power consumption, complicated operation and use, poor anti-interference ability, poor shockproof performance, and high cost. The shortcomings and deficiencies of the research and design of a small size, light weight, easy to carry, low power consumption, simple operation, strong anti-interference ability, with an ASIC chip as the core component of the portable English education for children Microelectronic chip English enlightenment learning machine.

The utility model is realized through the following technical solutions: the outline structure schematic diagram of the portable microelectronic chip English enlightenment learning machine is as shown in Figure 1; its circuit block diagram is as shown in Figure 2; its internal core main control program software flow block diagram is as shown in Figure 1 Shown in 3; English word learning software flow block diagram as shown in Figure 4; The circuit principle diagram of one of its embodiment as shown in Figure 5. The portable microelectronic chip English enlightenment learning machine is composed of a casing, a circuit board, an LCD (liquid crystal) display screen 1, and a button panel. , the side of the casing is equipped with a 232 serial interface 14 for data transmission with the computer, and is connected to the corresponding point of the circuit board in the casing through a serial signal line; the upper right corner of the panel is equipped with an LCD liquid crystal display brightness adjustment button 2, 3 and connected to the display interface circuit on the circuit board through the signal line, the power switch key 4 is installed in the lower right corner of the panel and connected to the power terminal of the circuit board through the power line; the volume adjustment button 5 and the prompt information button 6 are installed in the middle and lower part of the panel , Browse key button group 7-10, that is, fast forward to the end key 7, previous information key 8, next information key 9, fast back to the beginning key 10, function selection button 11, animation display button 12, pronunciation button 13 , and are respectively connected to the corresponding points on the circuit board through each button signal line; the circuit is composed of a special microelectronic chip for voice signal processing, a clock circuit, a keyboard array, an LCD display interface circuit, a storage circuit, a serial interface circuit, and a voice drive The circuit and the loudspeaker are connected together, and the interconnection relationship is as follows: the voice signal processing microelectronic chip is connected to the memory through the storage data line, the clock circuit is connected to the voice signal processing special microelectronic chip through the clock signal line, and the voice signal processing microelectronic chip is connected to the memory. The chip is connected to the LCD display interface circuit through the LCD driving signal line, the voice signal processing microelectronic chip is connected to the voice driving circuit and the speaker through the voice signal output line, and the keyboard array is respectively connected to the voice signal processing microelectronic chip through each key signal line. The voice signal processing microelectronic chip is connected to the serial interface through a serial signal line, and the serial interface can be connected to an external computer through a signal cable; wherein: the voice signal processing microelectronic chip is composed of a dedicated multimedia signal processing chip U1 The storage circuit is composed of memory integrated parts U4; the serial interface circuit is composed of U2 and U3; the clock circuit is composed of crystal X1, C3, C12, R2, R3 and R13; the display interface circuit is composed of U5; the keyboard array is composed of R5-R12 and buttons K1-K8 are electrically connected; the voice drive circuit is composed of R1 and crystal triode BG1.

The simple working process of the utility model is as follows: after the power is turned on, the relevant welcome animation picture is displayed on the LCD, and the speaker gives a voice prompt. Give the pronunciation and example sentences of this word, can show the writing process of this word on the LCD display screen by animation display button 12, can browse each learning content stored in the chip and the flash memory by the browsing key. During use, the voice volume (key 5) and the brightness of the LCD display (key 2, 3) can be adjusted. In addition, by selecting the function key, you can also perform quizzes, connect to a computer for information download, and other functions. The working principle of the utility model is as follows: the U1 microelectronic processing chip in the circuit has a data memory of 4M Bits, a 20K on-chip program memory, an embedded voice codec, an embedded 64*32 point LCD drive controller, Support voice storage and playback, graphics storage and display; therefore, the chip is very suitable for multimedia digital signal processing. The external memory is a flash memory (Flash Memory) with a storage capacity of 4M×8Bits, which is used to store English language learning materials. After the voice signal is encoded by ADPCM, it is stored in the flash memory, and the commonly used voice prompt information is stored in the internal data memory of the microelectronic chip U1; the voice playback is controlled by the program in the microprocessor chip, and the microprocessing is based on the button request. Extract relevant voice information and synthesize it and output it to the voice drive circuit for playback and processing by the speaker; the program is stored in the memory in the microprocessing chip (see Figure 3 for the flow chart of the main control program), and the language and text information is stored in the graphic mode. In the flash memory U4, through the program in the microprocessor chip and the related display driving circuit, various text information can be controlled to be displayed on the liquid crystal display. Relevant prompt information (comprising voice, text) is also controlled and given by the program in the microprocessor. The serial interface provides a channel for downloading information from an external computer to the device, and its implementation is designed and programmed based on the serial data interface RS232. The clock circuit provides a working oscillation frequency of 4MHz for use by the microprocessor. There is a clock frequency division circuit inside the microprocessor, which provides two operating frequencies of 4M and 32K. Usually, the utility model is in a low-power standby state (the clock is 32K). When there are display operations and voice playback, the clock of the device is automatically switched to 4M operating frequency, so that the power consumption of the device is relatively low. After the device is powered on, the micro-processing chip loads the program stored in the on-chip program memory into the running buffer, starts to run the pre-adjusted program, and detects the keyboard array, and performs different operations according to different keys. The functions of the buttons on the panel are as follows: buttons 2 and 3 to adjust the contrast of the LCD display; button 4 to power on and off; button 5 to adjust the volume, providing 16 digital volume levels, changing the volume cyclically from 1 to 16; 7 Play or display the last message; press button 8 to go up a message; press button 9 to go down a message; press button 10 to get the first message; button 11 is used for function selection, there are three modes: learning mode, questioning mode , Download information mode; button 12 is used to play voice information, when this button is pressed, the program decodes the current English word or letter or the voice of an example sentence and then outputs it to the speaker; button 13 is used to display text information, press this button Afterwards, the program displays the current English letters or words on the LCD screen in an animation manner; key 6 is used to provide relevant prompt information and help information for the operation.

Compared with the prior art, the utility model has the following advantages and beneficial effects: (1) Small in size: the utility model is made of all electronic components, the core chip is made of a microelectronic processor chip, the peripheral circuit is simple, and all Components can be made on a circuit board less than 36cm ² , so the whole device is small in size and easy to carry; (2) Low power consumption: the clock of the core processor microelectronic chip is only 4MHz, and most of the components are usually In the low power consumption state (32K clock frequency), the maximum output working current is only 20mA, and the normal static working current is less than 100μA. Therefore, the power consumption of this device is low and it is very energy-saving; (3) durable: this device does not contain Mechanical components, the core circuit is composed of a highly integrated microprocessor chip and a small number of electronic components. The service life of electronic components is much longer than that of mechanical devices; (4) High reliability and good shock resistance: due to the The circuit is simple, the volume is small, and the core function is controlled by the program integrated in the microprocessor processor chip. Therefore, the device is not easy to be damaged, and the shockproof performance of the circuit board composed of electronic components is much better than that of the mechanical device; (5) The multimedia function is rich : This device adopts advanced integrated voice coding and LCD display microelectronic chip, which can play voice and text information at the same time; (6) Provide serial interface to download data, good expansion performance: this device can be accessed through a standard RS232 serial port It is connected with an ordinary computer, and the relevant programs can be used to download data from the computer to the flash memory of the device, so that the learning content can be updated, and the expansion performance is good; (7) The voice and text information of the device are digitally stored in the memory , using digital signal processing technology, speech synthesis technology and LCD display technology to realize a full digital language enlightenment learning machine; (8) low cost, easy to popularize; this device can use a 4-bit multimedia microprocessor as the core processing chip , due to the high integration and strong signal processing capability of this type of chip, the peripheral circuit is very simple, the cost of the whole chip can be controlled within 40 yuan, the cost is low, and it is easy to popularize and use.

(4) Description of drawings

The accompanying drawings of the description are further explained below: Fig. 1 is a schematic diagram of the external structure of this portable microelectronic chip English enlightenment learning machine; Fig. 2 is a block diagram of its circuit; Fig. 3 is a block diagram of its internal main control program flow; Fig. 4 is a word Learning program flow block diagram; Fig. 5 is a schematic circuit diagram of one of its embodiments.

(5) Specific implementation methods

Embodiments of the present utility model can be as follows: (1) design and process the casing and panel of the present utility model as shown in Fig. 1, for example, engineering plastics can be used to manufacture casing and panel by injection molding; (2) according to Fig. 2 As shown in Figure 5, the computer circuit board layout software is used to design and manufacture the printed circuit board, and then the components are screened to install the circuit board. For example: the microprocessor chip U1 can be realized by W536120T of Taiwan WinBond Company, the memory U4 can be used of WF5520 flash memory of Taiwan WinBond Company, the serial port circuit U2 can be used of ADM232 of American AD Company, and U3 can be selected of Huahui, Suzhou City, China The company's SP0903, the liquid crystal display U5 can choose the 128×64 LCD liquid crystal display ZS128-64B of China Shenzhen Zhisheng Company, the clock circuit crystal X1 can choose 4MHz; the BG1 in the voice drive circuit can choose the triode 3DK210C; (3) press As shown in the block diagrams of Figure 3 and Figure 4, perform software programming and debugging, and then solidify them into the microprocessor chip; (4) install the liquid crystal display and buttons on the button panel respectively, install the serial interface on the side of the casing, and fix the circuit board In the casing, install and connect according to the connection relationship described in the above description, add a voltage of 4.5V to carry out simple debugging, and the utility model device can be implemented well.

Claims (1)

1, a kind of portable microelectronic chip English initiation learning machine, it is characterized in that: it is connected and composed jointly by casing, circuit board, LCD display curtain (1), key panel, its position and interconnected relationship are: LCD display curtain (1) and key panel are packed in the casing front, 232 serial line interfaces (14) that carry out data transmission with computing machine are equipped with in the side of casing, and are connected with casing interior circuit board respective point by serial signal line; The panel upper right corner is equipped with LCD LCDs brightness regulation button (2), (3) and is connected with display interface circuit on the circuit board by signal wire, and the panel lower right corner is equipped with power switch key (4) and is connected with circuit board power supply end points by power lead; The panel middle and lower part be equipped with volume regulate button (5), information button (6), navigation key key groups (7)～(10), promptly proceed to soon ending key 7, on information button (8), information button (9), rewind down key (10) to the end first down first, function selecting button (11), animation display button (12), pronunciation button (13), and be connected with respective point on the circuit board respectively by each push button signalling line respectively; Its circuit is handled special-purpose microelectronic chip by voice signal, clock circuit, keyboard array, the LCD display interface circuit, memory circuit, serial interface circuit, voice driven circuit and loudspeaker connect and compose jointly, its interconnected relationship is: voice signal is handled microelectronic chip and is connected with storer by the storage data line, clock circuit is handled special-purpose microelectronic chip by clock cable and voice signal and is connected, voice signal is handled microelectronic chip and is connected with the LCD display interface circuit by the LCD drive signal line, voice signal is handled microelectronic chip and is connected with voice driven circuit and loudspeaker by the voice signal output line, keyboard array is handled special-purpose microelectronic chip with voice signal respectively by each push button signalling line and is connected, voice signal is handled microelectronic chip and is connected with serial line interface by serial signal line, and serial line interface can be connected with outer computer by the signal cable line.

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