Electronic photo album

Abstract

The utility model provides an electronic photo album which comprises a main control unit composed of a main control chip, and the main control unit is connected with a storage circuit and a dual-channel RTC circuit; the ink screen is electrically connected to a differential driving circuit, and the differential driving circuit is electrically connected to a main control chip of the main control unit; the main control chip is further electrically connected with a wireless signal receiving and transmitting circuit which comprises a wireless signal receiving and transmitting loop which is sequentially composed of a first inductor, a second inductor, a first filter capacitor, a second filter capacitor, a coupling capacitor, the coupling capacitor, a third filter capacitor and an antenna end. Compared with a traditional liquid crystal screen and a traditional driving circuit, about 80% of electric energy consumption can be saved, only power supply of liquid crystal molecules of the ink screen is maintained, images are kept, refreshing is not needed when display is not replaced, and electric energy consumption is greatly saved.

Description

Technical Field

[0001] This application relates to the field of electronic photo albums, and in particular to an electronic photo album. Background Technology

[0002] An electronic photo album refers to an electronic product that can display digital photos on an LCD panel without the need for a computer. It can also display photos on devices such as televisions. It can also connect to USB flash drives, SD cards, and MMC cards. In addition to playing pictures, it can play MP3s, has built-in dual speakers, allows simultaneous playback of pictures and MP3s, and plays AVI, DAT, MPEG, or MPG format movies (VCD files), and VOB format movies (DVD files) from mobile phones (other unsupported formats can be converted using software). It can also output audio and video to a television or stereo system. Products that create this type of electronic photo album are called electronic photo frames.

[0003] Current traditional electronic photo albums still have problems such as (1) high power consumption leading to frequent charging, (2) poor outdoor visibility, (3) data storage is easily interfered with by the display, and (4) bulky size and poor ecological compatibility. Therefore, this utility model proposes an electronic photo album to at least partially solve the problems that may exist in the prior art. Utility Model Content

[0004] In view of the aforementioned problems, this application is made to provide an electronic photo album that overcomes or at least partially solves the aforementioned problems.

[0005] An electronic photo album includes:

[0006] The main control unit, composed of a main control chip, is connected to a storage circuit and a dual-channel RTC circuit.

[0007] The e-ink screen is electrically connected to a differential drive circuit, which is electrically connected to the main control chip of the main control unit.

[0008] The main control chip is also electrically connected to a wireless signal transceiver circuit, which includes a wireless signal transceiver loop consisting of a first inductor, a second inductor and a first filter capacitor, a second filter capacitor and a coupling capacitor, a coupling capacitor and a third filter capacitor, and an antenna.

[0009] Preferably, it also includes a battery and a USB interface disposed within the casing;

[0010] The battery and USB interface are electrically connected to the main control chip of the main control unit.

[0011] Preferably, it further includes a USB circuit electrically connected to the battery and the USB interface; the USB interface is a Type-C interface; the USB circuit includes a VBUS channel and a charging circuit: the VBUS circuit provides a data electrical connection between the USB interface and the main control chip;

[0012] The charging circuit includes, in sequence, a USB interface, a filter network, a charging management chip U1, a MOSFET power switching unit and the status control terminal of the main control chip, and finally the battery.

[0013] The battery is a lithium battery.

[0014] Preferably, the differential driving circuit includes: a common electrode circuit, a positive driving circuit, and a negative driving circuit;

[0015] The main control chip is electrically connected to the ink level through the common electrode circuit, the positive drive circuit, and the negative drive circuit.

[0016] Preferably, it also includes a DC power conversion circuit;

[0017] The DC power conversion circuit includes a first conversion circuit, at least two three-terminal voltage regulators connected in parallel in the DC power conversion circuit, the input terminals of the three-terminal voltage regulators are electrically connected to the battery through a switching circuit, and the control terminal of the switching circuit is electrically connected to the main control chip.

[0018] Preferably, the DC power conversion circuit further includes a second conversion circuit, the input terminal of the second conversion circuit being electrically connected to the input terminal of the first conversion circuit, and the output terminal of the second conversion circuit being independent of the output terminal of the first conversion circuit.

[0019] Preferably, it also includes a page-turning button and a reset button electrically connected to the main control chip circuit.

[0020] Preferably, the main control chip circuit is also electrically connected to the FLASH storage circuit.

[0021] This application has the following advantages:

[0022] In the embodiments of this application, a main control unit composed of a main control chip is used, which is connected to a storage circuit and a dual-channel RTC circuit; an e-ink screen is electrically connected to a differential driving circuit, which is electrically connected to the main control chip of the main control unit; the main control chip is also electrically connected to a wireless signal transceiver circuit, including a wireless signal transceiver loop consisting of a first inductor, a second inductor and a first filter capacitor, a second filter capacitor and a coupling capacitor, a coupling capacitor and a third filter capacitor, and an antenna. Compared to the approximately 80% power consumption of traditional LCD screens and driving circuits, this only needs to maintain the power supply to the liquid crystal molecules of the e-ink screen to keep the image running. When the display is not changed, there is no need to refresh, significantly saving power consumption. Attached Figure Description

[0023] To more clearly illustrate the technical solution of this application, the drawings used in the description of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the first part of the main control circuit of an electronic photo album provided in one embodiment of this application;

[0025] Figure 2 This is a schematic diagram of the second part of the main control circuit of an electronic photo album provided in one embodiment of this application;

[0026] Figure 3 This is a schematic diagram of the FLASH storage circuit structure of an electronic photo album according to an embodiment of this application;

[0027] Figure 4 This application provides a schematic diagram of an ADC sampling circuit structure for an electronic photo album according to one embodiment;

[0028] Figure 5 This application provides a schematic diagram of a DC power conversion circuit structure for an electronic photo album according to one embodiment;

[0029] Figure 6 This application provides a schematic diagram of the first part of the structure of a USB charging circuit for an electronic photo album according to one embodiment.

[0030] Figure 7 This application provides a schematic diagram of the second part of the structure of a USB charging circuit for an electronic photo album according to one embodiment;

[0031] Figure 8 This application provides a schematic diagram of the common circuit structure of an e-ink screen driving circuit for an electronic photo album according to one embodiment;

[0032] Figure 9 This application provides a schematic diagram of the forward drive circuit structure of an e-ink screen driving circuit for an electronic photo album, according to one embodiment.

[0033] Figure 10 This application provides a schematic diagram of the negative drive circuit structure of an e-ink screen driving circuit for an electronic photo album according to one embodiment;

[0034] Figure 11 This application provides a schematic diagram of the reset and page-turning button circuit structure for an electronic photo album according to one embodiment;

[0035] Figure 12 This application provides a schematic diagram of the RTC circuit structure of an electronic photo album according to one embodiment. Detailed Implementation

[0036] To make the objectives, features, and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0037] The following will further describe an electronic photo album in various exemplary embodiments of this application.

[0038] Reference Figures 1 to 12 The illustration shows an electronic photo album provided in this application embodiment, comprising: a main control unit composed of a main control chip, which is connected to a storage circuit and a dual-channel RTC circuit; and an e-ink screen electrically connected to a differential driving circuit, which is electrically connected to the main control chip of the main control unit. Through the main control unit and an independent RTC module, a time-division control strategy can be implemented, allowing the main control to be activated only when the image is refreshed, while the RTC maintains the system clock at other times. The circuit's static current is ≤10μA. Furthermore, combined with the e-ink screen and related driving circuits, compared to traditional LCD screens and driving circuits, it can achieve approximately 80% lower power consumption. It only needs to maintain the power supply to the liquid crystal molecules of the e-ink screen to keep the image running. When the display is not changed, there is no need for refreshing, meaning there is no additional power consumption.

[0039] As an example, such as Figure 1 and Figure 2 and Figure 11As shown, the circuit described above can specifically adopt a time-division control strategy of DA16200 main controller + independent RTC module. The main controller is only activated when pictures in the album are updated, and the RTC maintains the system clock at other times. The circuit's static current is ≤10μA. The main controller chip is also electrically connected to a wireless signal transceiver circuit, including a wireless signal transceiver loop (π-type impedance matching network) consisting of a first inductor L6 to a second inductor L7 and a first filter capacitor C70, a second filter capacitor C71 and a coupling capacitor C72, a coupling capacitor C72 to a third filter capacitor C73, and an antenna end, optimizing antenna radiation efficiency. During operation, the main controller chip's RF_XI pin (Pin4) and RF_XO pin (Pin5) are connected to an external crystal oscillator Y4, which has an oscillation frequency of 40MHz. This crystal oscillator provides the RF clock reference for the core, and the frequency is finely adjusted through resonant capacitor C77 (preferably 1pF) and resonant capacitor C76 (preferably 0.5pF).

[0040] This application solves the problem of excessive power consumption caused by the prolonged operation of LCD screens in traditional electronic photo albums by using an e-ink screen. The e-ink screen works by altering the arrangement of black and white ink microcapsules using an electric field to display content. It only consumes power when refreshing the screen, consuming almost no power when displaying static content. For example, in scenarios where employee badges typically display fixed information such as employee names, departments, and employee numbers, the e-ink screen can maintain this display for extended periods without continuous power supply, significantly reducing the energy consumption of the display component. Traditional LCD screens generate significant heat when their light-emitting elements are on for extended periods, affecting user experience and shortening lifespan. This application's e-ink screen electronic photo album avoids the heat generation issue associated with LCD screens during prolonged operation, thus minimizing heat generation during normal use. Without the adverse effects of high heat, the operating temperature of the circuit boards and other electronic components inside the badge remains relatively stable, effectively extending the overall lifespan of the electronic photo album.

[0041] Furthermore, it also includes a battery and a USB interface disposed within the casing; the battery and the USB interface are electrically connected to the main control chip of the main control unit.

[0042] like Figure 6 and Figure 7As shown, it also includes a USB circuit electrically connected to the battery and the USB interface; the USB interface is a Type-C interface; the USB circuit includes a VBUS channel and a charging circuit: the VBUS circuit provides a data electrical connection between the USB interface and the main control chip; the charging circuit includes a filter network, for example, a filter network composed of capacitors C31, C32 and C8, C22, etc., sequentially from the USB interface to the filter network, then to the charging management chip U1, then to the MOSFET power switching unit (which is mainly composed of MOSFETs Q2 and Q12) and the status control terminal of the main control chip, and finally to the battery; the battery is a lithium battery. When the USB interface is powered on, the voltage is divided by resistors R14 and R15 using MOSFETs Q2 and Q12. This divides the voltage, providing a drive voltage to the gate (G) of MOSFET Q12, causing its drain (D) and source (S) to conduct. This grounds the gate (G) of MOSFET Q2, preventing its drain and source from conducting. Consequently, the USB_DET_CPIOC8 signal is low. Conversely, when the USB interface is not powered on, the drain and source of Q12 are not conducting. In this case, the gate (G) of MOSFET Q2 is connected to its source (S) via pull-up resistor R12, providing a drive voltage to the gate. This causes the source and drain to conduct, resulting in a high-level USB_DET_CPIOC8 signal. This USB_DET_CPIOC8 signal is connected to the main control chip and the charging management chip U1.

[0043] The USB interface is preferably a Type-C interface, using a 16-pin Type-C connector, supporting bidirectional power supply and data transmission. The VBUS channel can be equipped with filter capacitors C31 / C32, preferably 100nF, to suppress power supply noise. For the power management module, the preferred charging chip U1 is LP28021DQVF, a lithium battery charging management IC with integrated buck-boost functionality, supporting a maximum float charge voltage of 4.2V. Figure 5 As shown, the aforementioned MOSFET Q3 can be used for input reverse connection protection and power path switching. Figure 4 As shown, U19 acts as a level shifter, controlling the signal link from VBAT_4.2V to the MCU.

[0044] It should be noted that transistors labeled U are generally chip-packaged components.

[0045] In the embodiments of this application, such as Figure 8 , Figure 9 and Figure 10As shown, the differential drive circuit includes: a common electrode circuit, a positive drive circuit, and a negative drive circuit; the main control chip is electrically connected to the ink level through the common electrode circuit, the positive drive circuit, and the negative drive circuit. A dynamic boost circuit specifically designed for e-ink screens, such as the U18BLM18PG221SH1, activates the VGH / VGL high voltage (15-20V / -5V) only during the refresh period and automatically shuts down the boost module after the refresh, saving 80% more energy than traditional continuous drive circuits.

[0046] Furthermore, it also includes DC power conversion circuits; such as Figure 5 As shown, the DC power conversion circuit includes a first conversion circuit, at least two three-terminal voltage regulators connected in parallel within the DC power conversion circuit, the input terminals of the three-terminal voltage regulators being electrically connected to the battery via a switching circuit, and the control terminal of the switching circuit being electrically connected to the main control chip. The DC power conversion circuit also includes a second conversion circuit, the input terminal of which is electrically connected to the input terminal of the first conversion circuit, and the output terminal of the second conversion circuit being independent of the output terminal of the first conversion circuit.

[0047] In the embodiments of this application, such as Figure 11 As shown, the buttons include a page-turning button and a reset button electrically connected to the main control chip. These buttons are electrically connected to the MCU unit. The reset button provides a switching signal to the RESET pin of the MCU unit, resetting the employee ID card. The page-turning button allows users to turn pages of the content currently displayed on the e-ink screen.

[0048] Furthermore, the main control chip is also electrically connected to the FLASH storage circuit. The main control chip is also electrically connected to the screen driving circuit; the e-ink screen can be electrically connected to the screen driving circuit via an FPC. Specifically, the main control chip can be electrically connected to the FLASH storage circuit, which can store information. The electronic photo album is equipped with a FLASH storage circuit, which can store multiple pictures and text. Pictures can be changed by pressing buttons, realizing a page-turning function, which is very convenient. As a low-power Bluetooth wireless radio frequency product, a single charge allows for long-term use.

[0049] Although preferred embodiments of the present application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present application.

[0050] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0051] The above provides a detailed description of an electronic photo album provided by this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. An electronic album, characterized by comprising: include: The main control unit, composed of a main control chip, is connected to a storage circuit and a dual-channel RTC circuit. The e-ink screen is electrically connected to a differential drive circuit, which is electrically connected to the main control chip of the main control unit. The main control chip is also electrically connected to a wireless signal transceiver circuit, which includes a wireless signal transceiver loop consisting of a first inductor, a second inductor and a first filter capacitor, a second filter capacitor and a coupling capacitor, a coupling capacitor and a third filter capacitor, and an antenna.

2. The electronic photo album according to claim 1, characterized in that, It also includes a battery and a USB port housed inside the casing; The battery and USB interface are electrically connected to the main control chip of the main control unit.

3. The electronic photo album according to claim 2, characterized in that, It also includes a USB circuit electrically connected to the battery and the USB interface; the USB interface is a Type-C interface; the USB circuit includes a VBUS channel and a charging circuit: the VBUS circuit provides a data electrical connection between the USB interface and the main control chip; The charging circuit includes, in sequence, a USB interface, a filter network, a charging management chip U1, a MOSFET power switching unit and a status control terminal of the main control chip, and finally a battery. The battery is a lithium battery.

4. The electronic photo album according to claim 1, characterized in that, The differential driving circuit includes: a common electrode circuit, a positive driving circuit, and a negative driving circuit; The main control chip is electrically connected to the e-ink screen through the common electrode circuit, the positive drive circuit, and the negative drive circuit.

5. The electronic photo album according to claim 1, characterized in that, It also includes a DC power conversion circuit; The DC power conversion circuit includes a first conversion circuit, at least two three-terminal voltage regulators connected in parallel in the DC power conversion circuit, the input terminals of the three-terminal voltage regulators are electrically connected to the battery through a switching circuit, and the control terminal of the switching circuit is electrically connected to the main control chip.

6. The electronic photo album according to claim 5, characterized in that, The DC power conversion circuit further includes a second conversion circuit, the input terminal of which is electrically connected to the input terminal of the first conversion circuit, and the output terminal of the second conversion circuit is independent of the output terminal of the first conversion circuit.

7. The electronic photo album according to claim 6, characterized in that, It also includes page-turning buttons and a reset button that are electrically connected to the main control chip.

8. The electronic photo album according to claim 1, characterized in that, The main control chip is also electrically connected to the FLASH storage circuit.

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