CN210324158U

CN210324158U - Ink screen reading equipment

Info

Publication number: CN210324158U
Application number: CN201921614726.9U
Authority: CN
Inventors: 程超; 刘斌
Original assignee: Ireader Technology Co Ltd; Zhangyue Technology Co Ltd
Current assignee: Ireader Technology Co Ltd; Zhangyue Technology Co Ltd
Priority date: 2019-09-25
Filing date: 2019-09-25
Publication date: 2020-04-14
Anticipated expiration: 2029-09-25

Abstract

The utility model relates to an electronic display technical field discloses an ink screen reading equipment. The ink screen reading equipment comprises a handwriting board, a system-level chip, an ink screen and a display screen controller, wherein the handwriting board is electrically connected with the system-level chip and is used for transmitting report point data to the system-level chip; the system-level chip is provided with a first USB controller and a first USB interface which are electrically connected, the display screen controller is provided with a second USB controller and a second USB interface which are electrically connected, and the first USB interface of the system-level chip is electrically connected with the second USB interface of the display screen controller and carries out transmission of reporting data; the display screen controller is electrically connected with the ink screen and used for receiving the reporting data and driving the ink screen to display. The embodiment of the utility model provides an improved the data transmission speed between system level chip and the display screen controller for the refresh of image.

Description

Ink screen reading equipment

Technical Field

The utility model relates to an electronic display technical field, concretely relates to ink screen reading equipment.

Background

The ink screen reading device refers to an Electronic device using an Electronic ink screen (E-ink or Electronic Paper Display/EPD), and some ink screen devices have a handwriting function, and are also called handwriting reading devices or handwriting readers. The electronic ink screen is a screen which does not emit light and realizes the display effect by depending on external reflection, and the display effect of the electronic ink screen is very similar to that of a paper material, so that the electronic ink screen can be compared with the experience of reading of the paper material.

With the continuous increase of the screen size of the ink screen reading device, the size of the displayed image is also larger and larger, which causes the image data amount transmitted inside the reading device to increase sharply, thereby causing the data transmission speed to decrease, and further increasing the time consumption of image refreshing.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention has been made to provide an ink screen reading apparatus that overcomes or at least partially solves the above problems.

The utility model provides an ink screen reading device, which comprises a handwriting board, a system level chip, an ink screen and a display screen controller, wherein the handwriting board is electrically connected with the system level chip and is used for transmitting point reporting data to the system level chip; the system-level chip is provided with a first USB controller and a first USB interface which are electrically connected, the display screen controller is provided with a second USB controller and a second USB interface which are electrically connected, and the first USB interface of the system-level chip is electrically connected with the second USB interface of the display screen controller and carries out transmission of reporting data; the display screen controller is electrically connected with the ink screen and used for receiving the reporting data and driving the ink screen to display.

In one embodiment, the first USB controller supports HOST mode and the second USB controller supports SLAVE mode.

In one embodiment, the first USB controller is electrically connected to the CPU of the system on chip through a bus.

In one embodiment, the bus is an AMBA bus or a NoC bus.

In one embodiment, the first USB controller is electrically connected to the CPU of the system-on-chip through a GPIF ii interface and a UART interface.

In one embodiment, the second USB controller is electrically connected to the main control circuit of the display screen controller.

In one embodiment, the first USB controller is one of a USB 1.1 controller, a USB 2.0 controller, and a USB3.0 controller, and the second USB controller is one of a USB 1.1 controller, a USB 2.0 controller, and a USB3.0 controller and corresponds to the first USB controller.

In one embodiment, the first USB interface is adapted to and plugged with the second USB interface.

In one embodiment, the first USB interface is a female connector, and the second USB interface is a male connector; or, the first USB interface is a male connector, and the second USB interface is a female connector.

In one embodiment, the first USB interface and the second USB interface are connected by a wire or a USB data line.

In one embodiment, the first USB controller is electrically connected to the memory module of the system-on-chip through a bus.

The utility model provides an among the ink screen reading equipment, through set up first USB controller and first USB interface in the system level chip, set up second USB controller and second USB interface at the display screen controller, report some data through the USB interface transmission between system level chip and the display screen controller, improved data transmission speed for the refresh of image.

The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the present invention is given.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 is a schematic structural diagram of a handwriting reading device according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a handwriting reading device according to another embodiment of the present invention;

fig. 3 is a schematic structural diagram of a handwriting reading device according to another embodiment of the present invention;

fig. 4 is a schematic structural diagram of a handwriting reading device according to another embodiment of the present invention.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

The handwriting reading equipment comprises a handwriting board, a system level chip, a display screen controller and an ink screen which are electrically connected in sequence, wherein the handwriting board is used for detecting handwriting operation instructions. In the prior art, after a handwriting pad of a handwriting reading device detects a signal triggered by a stylus, the signal is converted into point reporting data, and then transmitted to a system-on-chip, the system-on-chip generates a handwriting track image to be displayed according to the point reporting data, and converts the handwriting track image into a gray image, and then transmits the gray image to a Display screen controller, such as an Electronic Paper Display Controller (EPDC) or a Timer control register (TCON), through interfaces such as a Serial Peripheral Interface (SPI). And obtaining a driving waveform (waveform) of each pixel point by the EPDC or the TCON according to a Look-Up-Table (LUT) of the gray level image of each pixel point in the gray level image, and driving the EPD for display by using the driving waveform through the EPDC or the TCON.

With the continuous increase of the screen size of the ink screen reading device, the size of the displayed image is larger and larger, which causes the image data volume transmitted inside the reading device to increase sharply, and the speed of transmitting large-capacity data through the SPI interface is lower, which increases the time consumption of image refreshing.

Fig. 1 shows a schematic structural diagram of a handwriting reading apparatus provided by an embodiment of the present invention, as shown in fig. 1, a handwriting reading apparatus 100 includes a system-on-chip 10, an ink screen 20, a display screen controller 30, and a handwriting board 40. The system-on-chip 10 integrates a Central Processing Unit (CPU) and other main control devices, and is a main chip of the reader. The display screen controller 30 is an electronic paper display controller or a timer control register. Handwriting pad 40 is used to detect touch data and may be an electromagnetic pad, a capacitive pad, or a resistive pad. The handwriting board 40 is electrically connected with the system-on-chip 10, the system-on-chip 10 is electrically connected with the display screen controller 30, and the display screen controller 30 is electrically connected with the ink screen 20. The handwriting board 40 detects the point data and transmits the point data to the system-on-chip 10, and the system-on-chip 10 processes the point data and transmits the processed point data to the display screen controller 30 to drive the ink screen 20 to display.

The system-on-chip 10 is provided with a first Universal Serial Bus (USB) controller 11 and a first USB interface 12 which are electrically connected, the display screen controller 30 is provided with a second USB controller 31 and a second USB interface 32 which are electrically connected, and the first USB interface 12 of the system-on-chip 10 and the second USB interface 32 of the display screen controller 30 are electrically connected and perform transmission of reporting data. Compare with traditional interfaces such as SPI, the embodiment of the utility model provides a through adopting the USB interface to carry out the communication between system level chip 10 and the display screen controller 30, realized the quick transmission of large capacity data.

The first USB controller 11 supports the HOST mode and the second USB controller 31 supports the SLAVE mode, so that the hit data can be transmitted from the system on chip 10 to the display screen controller 30. USB HOST is a USB master device, and one end supporting HOST mode can acquire data from another USB SLAVE device.

The first USB controller 11 may adopt one of a USB 1.1 controller, a USB 2.0 controller, and a USB3.0 controller, and the second USB controller 31 may adopt one of a USB 1.1 controller, a USB 2.0 controller, and a USB3.0 controller and corresponds to the first USB controller. For example, when the first USB controller 11 employs a USB 1.1 controller, the second USB controller 31 also employs a USB 1.1 controller; when the first USB controller 11 adopts a USB 2.0 controller, the second USB controller 31 also adopts a USB 2.0 controller; when the first USB controller 11 employs a USB3.0 controller, the second USB controller 31 also employs a USB3.0 controller. The USB controllers using the same protocol can realize data transmission between the system-on-chip 10 and the display screen controller 30. The transmission speeds of the USB 1.1, 2.0 and 3.0 protocols are 12Mb/s, 480Mb/s and 4Gb/s in sequence.

There are various connection modes between the first USB interface 12 and the second USB interface 32. For example, the first USB interface 12 is adapted to and plugged into the second USB interface 32, or the first USB interface 12 and the second USB interface 32 are connected by a wire or a USB data line. When the first USB interface 12 is connected to the second USB interface 32 in a plugging manner, the first USB interface 12 may be a female connector, and the second USB interface 32 is a male connector; alternatively, the first USB interface 12 is a male connector, and the second USB interface 32 is a female connector.

As shown in fig. 2, in an embodiment, the first USB controller 11 is electrically connected to the CPU13 of the system-on-chip 10 through the bus 61. The bus 61 may be an Advanced Microcontroller Bus Architecture (AMBA) bus or a Network on Chip (NoC) bus. The second USB controller 32 is electrically connected to the main control circuit 33 of the display screen controller 30.

As shown in fig. 3, in another embodiment, the first USB controller 11 may further be electrically connected to the CPU13 of the system-on-chip 10 through a general programmable interface (GPIF ii) interface 62 and a universal asynchronous Receiver/Transmitter (UART) interface 63. For example, the CPU13 sends a control command to the first USB controller 11 through the UART interface 63, and transmits data to the first USB controller 11 through the GPIF ii interface 62.

In another embodiment, as shown in fig. 4, the first USB controller is further electrically connected to the memory module 14 of the system-on-chip 10 through the bus 61.

In the implementation process, firstly, command control is configured, the system-on-chip configures the display screen controller, which is the USB peripheral, into a mass storage device, and the system-on-chip sends a conventional Common Data Base (CDB) command specified by a Small Computer System Interface (SCSI) to access the USB peripheral.

Data transfer may utilize standard USB protocols to transfer large blocks of data. And the first USB controller of the system-on-chip sends a control command to establish session connection with the second USB controller of the display screen controller, and the system-on-chip prepares ink screen display frame data. The data phase controlling the data transfer consists of more than one input or output transaction, each complying with the same protocol rules as the batch transfer. All transactions in the data phase must have the same direction, i.e., all incoming transactions or all outgoing transactions. The amount of data to be sent in a data item and its direction are specified at the stage of establishing the transaction. If the amount of data exceeds the previously determined packet size, the data will be sent in a number of transactions that support the largest packet size, with any remaining data being sent as a remainder in the last transaction. And after the data transmission is finished, closing the transmission link handle.

Those skilled in the art will appreciate that although some embodiments herein include some features included in other embodiments instead of others, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the following claims, any of the claimed embodiments may be used in any combination.

It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention can be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.

Claims

1. An ink screen reading device comprises a handwriting board, a system-level chip, an ink screen and a display screen controller,

the handwriting board is electrically connected with the system-on-chip and used for transmitting report point data to the system-on-chip;

the system-level chip is provided with a first USB controller and a first USB interface which are electrically connected, the display screen controller is provided with a second USB controller and a second USB interface which are electrically connected, and the first USB interface of the system-level chip is electrically connected with the second USB interface of the display screen controller and carries out transmission of reporting data;

the display screen controller is electrically connected with the ink screen and used for receiving the reporting data and driving the ink screen to display.

2. The ink screen reading device of claim 1, wherein the first USB controller supports a HOST mode and the second USB controller supports a SLAVE mode.

3. The ink screen reading device of claim 1, wherein the first USB controller is electrically connected to the CPU of the system-on-chip via a bus.

4. The ink screen reading device of claim 3, wherein the bus is an AMBA bus or a NoC bus.

5. The ink screen reading device of claim 1, wherein the first USB controller is electrically connected to the CPU of the system-on-chip via a GPIF ii interface and a UART interface.

6. The ink screen reading device of claim 1, wherein the second USB controller is electrically connected to the main control circuit of the display screen controller.

7. The ink screen reading device of claim 1, wherein the first USB controller is one of a USB 1.1 controller, a USB 2.0 controller, and a USB3.0 controller, and the second USB controller is one of a USB 1.1 controller, a USB 2.0 controller, and a USB3.0 controller and corresponds to the first USB controller.

8. The ink screen reading device of claim 1, wherein the first USB interface is mated and mated with the second USB interface.

9. The ink screen reading device of claim 8, wherein the first USB interface is a female connector and the second USB interface is a male connector; or, the first USB interface is a male connector, and the second USB interface is a female connector.

10. The ink screen reading device of claim 1, wherein the first USB interface and the second USB interface are connected by a wire or a USB data line.

11. The ink screen reading device of claim 1, wherein the first USB controller is electrically connected to the system-on-chip memory module via a bus.