阅读说明：本技术 双type-c接口控制电路 (Double TYPE-C interface control circuit ) 是由 曾明 于 2019-11-15 设计创作，主要内容包括：本发明公开了一种双TYPE-C接口控制电路,包括两个TYPE-C接口控制电路、MCU芯片和显示控制电路,所述MCU芯片分别控制该两个TYPE-C接口控制电路,该MCU芯片控制该显示控制电路；所述TYPE-C接口控制电路包括第一TYPE-C接口、第二TYPE-C接口、USB切换控制器、USB接口；所述第一TYPE-C接口、第二TYPE-C接口分别通过USB切换控制器控制该USB接口信号；所述第一TYPE-C接口、第二TYPE-C接口分别输入信号至该显示控制电路。本发明提供一种电路结构简单,效率稳定安全,可以使电子产品微型化的一种双TYPE-C接口控制电路。(The invention discloses a double TYPE-C interface control circuit, which comprises two TYPE-C interface control circuits, an MCU chip and a display control circuit, wherein the MCU chip respectively controls the two TYPE-C interface control circuits, and controls the display control circuit; the TYPE-C interface control circuit comprises a first TYPE-C interface, a second TYPE-C interface, a USB switching controller and a USB interface; the first TYPE-C interface and the second TYPE-C interface respectively control the USB interface signal through a USB switching controller; the first TYPE-C interface and the second TYPE-C interface respectively input signals to the display control circuit. The invention provides a double-TYPE-C interface control circuit which is simple in circuit structure, stable and safe in efficiency and capable of miniaturizing electronic products.)

1. The utility model provides a two TYPE-C interface control circuit which characterized in that: the display control circuit comprises two TYPE-C interface control circuits, an MCU chip and a display control circuit, wherein the MCU chip respectively controls the two TYPE-C interface control circuits and controls the display control circuit;

the TYPE-C interface control circuit comprises a first TYPE-C interface, a second TYPE-C interface, a USB switching controller and a USB interface; the first TYPE-C interface and the second TYPE-C interface respectively control the USB interface signal through a USB switching controller; the first TYPE-C interface and the second TYPE-C interface respectively input signals to the display control circuit.

2. The dual TYPE-C interface control circuit of claim 1, wherein: the MCU chip is a chip with the model number FL 7102.

3. The dual TYPE-C interface control circuit of claim 1, wherein: the display control circuit comprises a display chip, wherein the chip is a chip with model number of RTD2556-CG or model number of RTD 2556T-CG.

4. The dual TYPE-C interface control circuit of claim 1, wherein: the USB interface comprises at least two USB interfaces.

5. The dual TYPE-C interface control circuit of claim 1, wherein: the TYPE-C interface is a chip with the model of APTIV or BELDEN.

Technical Field

The invention relates to an electronic product interface circuit, in particular to a double TYPE-C interface control circuit.

Background

The display driver board is an interface card which is connected with the host and the display screen and is used for converting output information of the host into information such as characters, graphs and colors and transmitting the information to the display screen for display; the double-TYPE-C interface of the display driving board on the market has a complex structure, a large volume and a high cost for the current electronic product, and cannot be applied to the miniature electronic product.

Chinese patent application No. 201710676997.6, application date: 08 month 09, 2017, published day: 23/01/2018, the patent names are: the invention provides a dual-type-c interface device based on an intel kabyake platform, which comprises a CPU (central processing unit) main control unit, a Thunderbolt-based type-c interface used for transmitting data at high speed, a first PD control chip used for identifying the type of interface insertion equipment and power path management, an embedded controller module, a second PD control chip used for identifying the type of interface insertion equipment and power path management, and a type-c interface with a charging function and data transmission, wherein the output end of the CPU main control unit is respectively connected with the Thunderbolt and the main control type-c interface, and the second PD control chip is connected with the type-c interface. The beneficial effects of the invention are: the method reduces the cost and has higher expansibility while ensuring the transmission of large-capacity data.

Although the above patent document discloses a dual type-c interface device, the present invention has a complicated structure and a relatively high cost, and cannot be applied to a small electronic product, and cannot meet the market demand.

Disclosure of Invention

In view of this, the present invention provides a dual TYPE-C interface control circuit, which has a simple circuit structure, low cost, stable and safe transmission and control efficiency, and can miniaturize electronic products.

In order to realize the purpose of the invention, the following technical scheme can be adopted:

a double TYPE-C interface control circuit comprises two TYPE-C interface control circuits, an MCU chip and a display control circuit, wherein the MCU chip respectively controls the two TYPE-C interface control circuits, and controls the display control circuit;

the TYPE-C interface control circuit comprises a first TYPE-C interface, a second TYPE-C interface, a USB switching controller and a USB interface; the first TYPE-C interface and the second TYPE-C interface respectively control the USB interface signals through a USB switching controller; the first TYPE-C interface and the second TYPE-C interface respectively input signals to the display control circuit.

The MCU chip is a chip with the model number FL 7102.

The display control circuit comprises a display chip, wherein the chip is a chip with model number of RTD2556-CG or model number of RTD 2556T-CG.

The USB interface comprises at least two USB interfaces.

The TYPE-C interface is a chip with the model of APTIV or BELDEN.

The invention has the beneficial effects that: 1) the invention solves the problems of redundant design and single function of a double TYPE-C interface circuit in the prior art, and has simple circuit structure, more convenient fault processing and lower maintenance cost; 2) the transmission and efficiency of the invention are more stable and efficient, and the market demand can be satisfied; 3) the invention is more convenient and safe to use; the invention has simple structure and small volume, and can meet the use requirement of miniaturized electronic products.

Drawings

FIG. 1 is a prior art circuit block diagram of a dual TYPE-C interface control circuit according to an embodiment of the present invention;

FIG. 2 is a block diagram of another prior art circuit for a dual TYPE-C interface control circuit according to an embodiment of the present invention;

FIG. 3 is a block diagram of a dual TYPE-C interface control circuit according to an embodiment of the present invention;

fig. 4 is another circuit block diagram of the dual TYPE-C interface control circuit according to the embodiment of the invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and embodiments thereof.

Example 1

Referring to fig. 1, in the prior art, the TYPE-C interface control circuit includes a TYPE-C interface circuit and a power circuit, the TYPE-C interface circuit can only input a video signal, the power circuit is used to supply power, and the video signal needs to be decoded by a positive and negative insertion decoding chip and then transmitted to a display chip; the TYPE-C interface control circuit has single function and unstable signal output.

Referring to fig. 2, in the prior art, a dual TYPE-C interface control circuit is further included, where the circuit includes two TYPE-C interface circuits, the TYPE-C interface circuits may not distinguish between a power supply and a signal device, and a video signal needs to be decoded by two forward and backward insertion decoding chips and then transmitted to a display chip; although the TYPE-C interface circuit outputs stable signals, two decoding chips are used, so that the circuit structure is complex and the cost is increased; the circuit volume becomes large and cannot be used in a small electronic product.

Example 2

Referring to fig. 3 and 4, the dual TYPE-C interface control circuit of the present invention includes two TYPE-C interface control circuits, an MCU chip 4 and a display control circuit 5, wherein the MCU chip respectively controls the two TYPE-C interface control circuits, and the MCU chip 4 controls the display control circuit 5; the display control circuit 5 is used for controlling the display of the display screen 6.

The TYPE-C interface control circuit comprises a first TYPE-C interface 1, a second TYPE-C interface 2, a USB switching controller 3 and a USB interface; the USB interface comprises at least two USB interfaces, including a plurality of USB interfaces such as a USB interface 1, a USB interface 2, a USB interface 3 and the like.

The first TYPE-C interface 1 and the second TYPE-C interface 2 respectively control the USB interface signals through a USB switching controller 3; the first TYPE-C interface 1 and the second TYPE-C interface 2 respectively input signals to the display control circuit 7.

In this embodiment, first TYPE-C interface 1 or second TYPE-C interface 2 can external power supply, after one of them TYPE-C interface received power signal, can pass through MCU chip 4 realizes the power supply to another TYPE-C interface, has realized first TYPE-C interface 1, second TYPE-C interface 2 can blind plug, use more portably.

In this embodiment, the MCU chip is a chip with a model FL 7102.

In this embodiment, the display control circuit includes a display chip, which is a chip with model number of RTD2556-CG or model number of RTD 2556T-CG.

In this embodiment, the first TYPE-C interface 1 and the second TYPE-C interface 2 are chips whose models are respectively APTIV or bedden.

In this embodiment, this MCU chip 4 is listened and is controlled two TYPE-C signal input and give display chip to inform display chip by this MCU chip 4, first TYPE-C interface 1 and the second TYPE-C interface 2 input port is positive and negative to be inserted and inserts information wantonly, and display chip realizes first TYPE-C interface 1, the second TYPE-C interface 2 is positive and negative to be inserted and inserts freely and decode according to communication information.

In this embodiment, the first TYPE-C interface 1 and the second TYPE-C interface 2 are respectively connected to an external device and receive an input signal of the external device, and the first TYPE-C interface 1 and the second TYPE-C interface are respectively connected to a system power supply through the power controller 4; the first TYPE-C interface 1 and the second TYPE-C interface 2 respectively control a plurality of USB interface signals of the USB interface 1, the USB interface 2, the USB interface 3- - -and the like through the USB switching controller 3; the USB interface is used for connecting data connection products such as a keyboard, a mouse and the like, and the USB switching controller 3 is used for controlling input signals of the USB interface.

In this embodiment, the MCU chip 4 is directly interconnected and communicated with the first TYPE-C interface 1, the second TYPE-C interface 2, and the display control circuit 5, and the first TYPE-C interface 1 and the second TYPE-C interface 2 have power input and video input function settings, and when one TYPE-C interface is connected to a power supply and the other TYPE-C interface is connected to a video, the MCU chip switches control dependencies, recognizes an interface with a power input, turns on a power supply function, recognizes an interface with a video input, turns on a video function module, and accurately allows the power supply to supply power to the video device;

the MCU chip 4 identifies the positive and negative signals of the signal source and directly communicates with the display chip 5, and the display chip 5 decodes the corresponding signals after receiving the information; the three-party communication direct connection mode has more timely response and no attenuation; in the practical application process, the cost is saved, the design space of the circuit diagram is saved, the whole circuit volume is reduced, the product is more competitive, and the circuit can be applied to smaller and thinner electronic products.

In this embodiment, first TYPE-C interface 1, second TYPE-C interface 2 can blind plug, because this first TYPE-C interface 1, second TYPE-C interface 2 incoming signal respectively to this display control circuit 5 are connected, TYPE-C interface signal transmission does not need middle chip, makes signal transmission more stable, and signal transmission and efficiency are higher.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.