Electronic reader

Abstract

The utility model aims to provide an electronic reader, the electronic reader comprises a hardware circuit, a charging and discharging function module and an ink screen, the hardware circuit comprises a hardware processor and a chargeable and dischargeable battery, and the charging and discharging function module comprises an MCU control system and a power supply buck-boost module; the hardware processor is respectively connected with the chargeable and dischargeable battery and the MCU control system; the MCU control system is connected with the power supply buck-boost module through an I2C bus, the power supply buck-boost module is connected with the hardware switch circuit, and the hardware switch circuit is connected with a Type-C interface of the electronic reader, so that the MCU control system controls the power supply buck-boost module to perform charging / discharging mode switching on a chargeable and dischargeable battery; the hardware processor is connected with the ink screen through an externally-hung DPI interface, so that the display function of the electronic reader is realized, the interactive switching of the charging / discharging mode of the chargeable and dischargeable battery is accurately controlled, the long standby of the electronic reader is met, and other external intelligent hardware can be charged.

Description

Technical Field

[0001] The utility model relates to the technical field of readers, in particular to an electronic reader. Background Art

[0002] As digital reading becomes increasingly popular, ink screen readers among electronic reading devices have become a commuting artifact for people to use due to their unique advantages in eye-protection reading and learning. The devices, which focus on providing an experience comparable to that of paper books, are not only unique in their reading experience, but also meet the needs of modern people in terms of functionality and portability.

[0003] As the appearance of current electronic products is becoming increasingly smaller and thinner, ink screen readers not only need to provide the same reading experience as paper books, but also have higher requirements on the weight and portability of the entire machine. However, the resulting reduction in the thickness of the entire machine and the limitation of battery capacity have also become bottlenecks restricting standby and usage time. Utility Model Content

[0004] One purpose of the utility model is to provide an electronic reader that integrates a hardware circuit with a charging and discharging function module, which not only satisfies the electronic reader's own long standby and battery life requirements, but also realizes a charging function for other external intelligent hardware.

[0005] According to one aspect of the utility model, an electronic reader is provided, the electronic reader comprising a hardware circuit, a charge-discharge function module and an ink screen, wherein the hardware circuit comprises a hardware processor and a chargeable and dischargeable battery, and the charge-discharge function module comprises an MCU control system and a power buck-boost module;

[0006] The hardware processor is connected to the rechargeable battery and the MCU control system respectively;

[0007] The MCU control system is connected to the power buck-boost module via an I2C bus, the power buck-boost module is connected to a hardware switch circuit, and the hardware switch circuit is connected to a Type-C interface of the electronic reader, so that the MCU control system controls the power buck-boost module to switch the charge / discharge mode of the rechargeable battery;

[0008] The hardware processor is connected to the ink screen via an external DPI interface to realize the display function of the electronic reader.

[0009] Furthermore, in the above-mentioned electronic reader, the common channel port COM1 / COM2 of the hardware switch circuit is connected to the signal of the port cc1 / cc2 and the port dp / dm of the Type-C interface of the electronic reader;

[0010] The pins NC1 / NC2 of the hardware switch circuit are connected to the hardware processor, and the pins NO1 / NO2 of the hardware switch circuit are connected to the power buck-boost module.

[0011] Furthermore, in the above-mentioned electronic reader, the hardware processor is connected to the rechargeable and dischargeable battery via a power management unit;

[0012] The rechargeable and dischargeable battery is also connected to the MCU control system via a fuel gauge chip.

[0013] Furthermore, in the above electronic reader, the electricity meter chip includes a built-in arithmetic logic unit, a current analog-to-digital converter and a voltage analog-to-digital converter.

[0014] The pins CSP / CSN of the power meter chip are connected to the two ends of a 10 milliohm detection resistor, and the voltage and current at the two ends of the detection resistor are calculated by the voltage analog-to-digital converter and the current analog-to-digital converter respectively, and then the power information of the rechargeable and dischargeable battery is calculated by the built-in arithmetic logic unit;

[0015] The hardware processor is connected to the register of the fuel gauge chip via an I2C interface.

[0016] Furthermore, in the above electronic reader, the hardware circuit also includes a memory and a wireless Bluetooth module.

[0017] The hardware processor is connected to the memory and the wireless Bluetooth module respectively.

[0018] Compared with the prior art, the electronic reader of the utility model includes a hardware circuit, a charge and discharge function module and an ink screen, wherein the hardware circuit includes a hardware processor and a rechargeable battery, and the charge and discharge function module includes an MCU control system and a power buck-boost module; the hardware processor is connected to the rechargeable battery and the MCU control system respectively; the MCU control system is connected to the power buck-boost module via an I2C bus, the power buck-boost module is connected to a hardware switch circuit, and the hardware switch circuit is connected to the Type-C interface of the electronic reader, so that the MCU control system controls The power buck-boost module switches the charge / discharge mode of the rechargeable battery; the hardware processor is connected to the ink screen via an external DPI interface to realize the display function of the electronic reader. On the basis of the hardware processor, an external MCU control system, a power buck-boost module and a hardware switch circuit are used to realize precise control of the rechargeable battery to perform interactive switching of the charge / discharge mode, so as to meet the long standby and battery life requirements of the electronic reader itself, and realize the charging function for other external intelligent hardware, so that the electronic reader can be used in a diversified manner, meet the different usage requirements of users, and break through the conventional application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0020] Figure 1 An overall structural diagram showing an electronic reader according to one aspect of the utility model in a practical application scenario;

[0021] Figure 2 A circuit diagram showing a chip KTU1002A corresponding to a hardware switch circuit of an electronic reader in an actual application scenario according to one aspect of the utility model;

[0022] Figure 3 A circuit diagram corresponding to a power meter chip of an electronic reader in an actual application scenario according to one aspect of the utility model is shown.

[0023] Reference numerals:

[0024] 1-ink screen; 2-hardware processor; 3-rechargeable battery; 4-MCU control system; 5-power buck-boost module; 6-hardware switching circuit; 7-power management unit; 8-fuel meter chip; 9-memory; 10-wireless Bluetooth module.

[0025] The same or similar reference numerals in the drawings represent the same or similar components. DETAILED DESCRIPTION

[0026] The utility model is described in further detail below in conjunction with the accompanying drawings.

[0027] like Figure 1 As shown, it is an overall structural diagram of an electronic reader in an actual application scenario according to one aspect of the utility model, wherein the electronic reader includes a hardware circuit, a charging and discharging functional module and an ink screen 1, wherein the hardware circuit includes a hardware processor 2 and a rechargeable and dischargeable battery 3, and the charging and discharging functional module includes an MCU control system 4 and a power buck-boost module 5.

[0028] Here, the rechargeable battery 3 includes but is not limited to a large-capacity lithium battery of 6000mAh, which not only provides stable and ultra-long-time power for the electronic reader, but also has a small size, which is convenient for users to carry and reduces the carrying pressure of the electronic reader. At the same time, a protection chip is also provided in the rechargeable battery to detect various types of abnormalities such as overvoltage, undervoltage, overcurrent, etc. and protect the lithium-ion battery from safety failures; the hardware processor 2 is preferably an intelligent hardware processor based on the chip RK3566; the MCU control system 4 includes but is not limited to an MCU (MicroControl Unit) based on the ARM Cortex M0 core architecture.

[0029] The power buck-boost module 5 refers to a circuit architecture that converts the input DC power into high voltage / low voltage, preferably a buck-boost power boost-buck architecture based on chip SW6201, to realize the power conversion function of multi-protocol bidirectional fast charging; the fast charging detection module, fast charging protocol module, power path management module and power control module are integrated in the circuit architecture of the power buck-boost module 5 to realize 18W forward and reverse charging at different voltages such as 5V / 3A, 9V / 2A, 12V / 1.5A, etc., to solve the limitation that the hardware processor 2 based on chip RK3566 itself cannot support 18W forward and reverse charging. In addition, the chip SW6201 itself also supports PD (Power Distribution: Type-C fast charging protocol) fast charging, QC3.0 / QC2.0 (Quick Charge: Qualcomm's fast charging protocol) fast charging, FCP (Fast Charge Protocol: Huawei's private fast charging protocol) fast charging, PE (Pump Express: The fast charging protocol launched by MediaTek) fast charging and other different fast charging protocols, while supporting the BC1.2 protocol to meet various fast charging protocols for consumer electronic products.

[0030] The hardware processor 2 is connected to the rechargeable battery 3 and the MCU control system 4 respectively; here, the hardware processor 2 is connected to the MCU control system 4 via an I2C bus.

[0031] The MCU control system 4 is connected to the power buck-boost module 5 via an I2C bus (Inter-Integrated Circuit, integrated circuit bus), the power buck-boost module 5 is connected to a hardware switch circuit 6, and the hardware switch circuit 6 is connected to the Type-C interface of the electronic reader, so that the MCU control system 4 controls the power buck-boost module 5 to switch the charge / discharge mode of the rechargeable battery 3; here, the hardware switch circuit 6 is preferably a hardware switch circuit based on the chip KTU1002A, which realizes forward charging of the rechargeable battery 3 of the electronic reader itself, and reverse charging of an external smart device (for example, a mobile phone, a tablet computer, etc.) connected via the Type-C interface.

[0032] The hardware processor 2 is connected to the ink screen 1 through an external DPI (Direct Programming Interfac) interface to realize the display function of the electronic reader; here, the DPI interface refers to a parallel display interface, that is, an RGB interface, which is a parallel synchronization, clock, and data signal interface. At the same time, the display function of the reader is realized through the hardware TCON interface (Timing Controller) of the chip RK3566 itself.

[0033] Furthermore, if Figure 2 As shown, it is a circuit diagram of a chip KTU1002A corresponding to a hardware switch circuit of an electronic reader in an actual application scenario according to one aspect of the utility model, wherein the common channel port COM1 / COM2 of the hardware switch circuit 6 (chip KTU1002A) is connected to the signal of the port cc1 / cc2 and the port dp / dm of the Type-C interface of the electronic reader, so as to realize the connection between the electronic reader and an external smart device connected via the Type-C interface.

[0034] The pin NC1 / NC2 of the hardware switch circuit 6 (chip KTU1002A) is connected to the hardware processor 2 (chip RK3566), and the pin NO1 / NO2 of the hardware switch circuit 6 (chip KTU1002A) is connected to the power buck-boost module 5 (chip SW6201). Specifically, the pin NC1 / NC2 is connected to the corresponding CC and dp, dm interfaces on the hardware processor 2 (chip RK3566); the pin NO1 / NO2 is connected to the corresponding CC and dp, dm interfaces on the power buck-boost module 5 (chip SW6201). At the same time, the hardware processor 2 (chip RK3566) manages and controls the switching of the NCx and NOx channels through the CB1 / CB2 interface.

[0035] It should be noted that the signal of port cc refers to Configuration Channel, which is a newly added key channel of USB type c (i.e., key pin cc1 and key pin cc2 of type-c interface), used to identify different inserted devices, power supply voltage and current types of devices, and to establish and manage the connection between data and VUBS voltage of USB devices; the signals of ports dp and dm are USB differential data signals, which realize the switching of cc logic signals and dp and dm signals of Type-C interface, facilitate the transmission of signal information between electronic reader and external smart devices, improve connection stability, and enhance the charging effect of rechargeable battery in electronic reader for external smart devices.

[0036] Furthermore, if Figure 3 As shown, it is a circuit diagram corresponding to a power meter chip of an electronic reader in an actual application scenario according to one aspect of the utility model, wherein the hardware processor 2 is connected to the rechargeable battery 3 through a power management unit 7; the power management unit 7 is a PMU (power management uint: power management unit) based on the chip RK817.

[0037] The rechargeable battery 3 is also connected to the MCU control system 4 through the fuel meter chip 8; here, the MCU control system 4 and the fuel meter chip 8 are connected through an I2C bus; the fuel meter chip 8 is preferably a high-precision power detection module based on the chip CW2217. The chip CW2217 is a compact and high-precision lithium-ion battery fuel meter chip that accurately calculates the voltage and current across the resistor through an external high-precision 10 milliohm resistor.

[0038] Furthermore, the electricity meter chip 8 includes a built-in arithmetic logic unit, a current analog-to-digital converter and a voltage analog-to-digital converter, and the chip CW2217 uses a microcontroller of the built-in arithmetic logic unit to realize the calculation of electricity (coulomb).

[0039] Among them, the pins CSP / CSN of the fuel meter chip 8 are connected to the two ends of a 10 milliohm detection resistor. After the voltage and current at the two ends of the detection resistor are calculated respectively by the voltage analog-to-digital converter and the current analog-to-digital converter, the power information of the rechargeable and dischargeable battery 3 is calculated through the built-in arithmetic logic unit; here, the pins P+ / P- of the rechargeable and dischargeable battery 3 are the positive and negative pins of the battery module.

[0040] The hardware processor 2 is connected to the register of the fuel meter chip 8 through the I2C interface. The hardware processor 2 reads the power information inside the fuel meter chip 8 to obtain accurate information on the charging and discharging and power of the rechargeable and dischargeable battery 3. Specifically, the pin INT_N of the chip CW2217 is a hardware interrupt signal, which is used to output a corresponding hardware interrupt signal to the hardware processor 2 (chip RK3566) to monitor and understand the power status of the rechargeable and dischargeable battery in real time, and perform accurate charging and discharging interaction.

[0041] Furthermore, the hardware circuit also includes a memory 9 and a wireless Bluetooth module 10, wherein the hardware processor 2 is connected to the memory 9 and the wireless Bluetooth module 10 respectively; here, the memory 9 includes but is not limited to memory devices such as LPDDR4 (Low Power Double Data Rate 4) and eMMC (Embedded MultiMedia Card, embedded memory standard specification) flash memory, etc.; the hardware processor 2 is connected to the wireless Bluetooth module 10 through an SDIO (Secure Digital Input and Output) interface, and the wireless Bluetooth module 10 realizes functions such as wifi network connection, Bluetooth transmission and Bluetooth voice through the chip UWE5622.

[0042] In actual application, the utility model will realize the high-performance display effect of the EINKE ink screen through a dedicated interface TCON, and based on the charging management chip RK817 (i.e., power management unit), integrate the power buck-boost module based on the chip SW6201 to realize fast forward and reverse charging; an external high-precision lithium-ion battery fuel gauge based on the chip CW2217B can realize accurate charging and discharging interaction; the hardware switching circuit of the Type-C path switch based on the chip KTU1002 can realize data interaction between the electronic reader and external devices.

[0043] In summary, the electronic reader of the utility model includes a hardware circuit, a charging and discharging function module and an ink screen, wherein the hardware circuit includes a hardware processor and a rechargeable and dischargeable battery, and the charging and discharging function module includes an MCU control system and a power buck-boost module; the hardware processor is connected to the rechargeable and dischargeable battery and the MCU control system respectively; the MCU control system is connected to the power buck-boost module through an I2C bus, the power buck-boost module is connected to a hardware switch circuit, and the hardware switch circuit is connected to the Type-C interface of the electronic reader, so that the MCU control system controls the power buck-boost module to switch the charge / discharge mode of the rechargeable and dischargeable battery; the hardware processor is connected to the ink screen through an external DPI interface to realize the display function of the electronic reader, and the external MCU control system, the power buck-boost module and the hardware switch circuit are used to realize the interactive switching of the charge / discharge mode of the rechargeable and dischargeable battery, which not only meets the long standby and battery life requirements of the electronic reader itself, but also can realize the charging function for other external intelligent hardware.

[0044] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is limited by the appended claims rather than the above description, so it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved. In addition, it is obvious that the word "comprising" does not exclude other units or steps, and the singular does not exclude the plural. Multiple units or devices stated in the device claim can also be implemented by one unit or device through software or hardware. The words first, second, etc. are used to indicate names, and do not indicate any particular order.

Claims

1. An electronic reader, characterized in that: The electronic reader comprises a hardware circuit, a charge-discharge function module and an ink screen (1), wherein the hardware circuit comprises a hardware processor (2) and a chargeable and dischargeable battery (3), and the charge-discharge function module comprises an MCU control system (4) and a power supply step-up and step-down module (5); The hardware processor (2) is connected to the rechargeable battery (3) and the MCU control system (4) respectively; The MCU control system (4) is connected to the power buck-boost module (5) via an I2C bus, the power buck-boost module (5) is connected to a hardware switch circuit (6), and the hardware switch circuit (6) is connected to a Type-C interface of the electronic reader, so that the MCU control system (4) controls the power buck-boost module (5) to switch the charge / discharge mode of the rechargeable battery (3); The hardware processor (2) is connected to the ink screen (1) via an external DPI interface to realize the display function of the electronic reader.

2. The electronic reader according to claim 1, characterized in that: The common channel port COM1 / COM2 of the hardware switch circuit (6) is connected to the signal of the port cc1 / cc2 and the port dp / dm of the Type-C interface of the electronic reader; The pins NC1 / NC2 of the hardware switch circuit (6) are connected to the hardware processor (2), and the pins NO1 / NO2 of the hardware switch circuit (6) are connected to the power boost / step-down module (5).

3. The electronic reader according to claim 2, characterized in that: The hardware processor (2) is connected to the rechargeable and dischargeable battery (3) via a power management unit (7); The rechargeable and dischargeable battery (3) is also connected to the MCU control system (4) via a power meter chip (8).

4. The electronic reader according to claim 3, characterized in that: The electricity meter chip (8) comprises a built-in arithmetic logic unit, a current analog-to-digital converter and a voltage analog-to-digital converter, The pins CSP / CSN of the power meter chip (8) are connected to the two ends of a 10 milliohm detection resistor, and the voltage and current at the two ends of the detection resistor are calculated by the voltage analog-to-digital converter and the current analog-to-digital converter respectively, and then the power information of the rechargeable and dischargeable battery (3) is calculated by the built-in arithmetic logic unit; The hardware processor (2) is connected to the register of the electricity meter chip (8) via an I2C interface.

5. The electronic reader according to claim 3, wherein the hardware circuit further comprises a memory (9) and a wireless Bluetooth module (10), wherein: The hardware processor (2) is connected to the memory (9) and the wireless Bluetooth module (10) respectively.

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