CN214412881U

CN214412881U - TypeC and HDMI two-in-one transmission display control circuit and device

Info

Publication number: CN214412881U
Application number: CN202120816754.XU
Authority: CN
Inventors: 张旅冰; 孙铭梁; 黄智淦; 庞超飞
Original assignee: Shenzhen Xinlongpeng Technology Co ltd
Current assignee: Shenzhen Xinlongpeng Technology Co ltd
Priority date: 2021-04-20
Filing date: 2021-04-20
Publication date: 2021-10-15
Anticipated expiration: 2031-04-20

Abstract

The utility model discloses a two unification transmission display control circuit of TypeC and HDMI, a two unification transmission display control circuit of TypeC and HDMI includes: a transmission sub-circuit and a display control sub-circuit; the transmission sub-circuit comprises an HDMI transmission module and a TypeC transmission module; the HDMI transmission module and the TypeC transmission module are respectively and electrically connected with the display control sub-circuit; the display control sub-circuit comprises a TypeC female head unit, a PD protocol module, a signal turning module, a signal selection module, a video conversion module and a display interface; HDMI transmission module and type C transmission module are used for being connected with the female first unit electricity of type C, and PD protocol module, signal upset module and signal selection module are connected with the female first unit electricity of type C respectively, and the video conversion module is connected with PD protocol module, signal upset module and signal selection module electricity respectively, and the display interface is connected with the video conversion module electricity. The utility model discloses unify TypeC and HDMI signal and transmit at a port, convenient to carry uses conveniently, and user experience is high.

Description

TypeC and HDMI two-in-one transmission display control circuit and device

Technical Field

The utility model relates to a show control technical field, especially relate to a two unification transmission display control circuit of TypeC and HDMI and device.

Background

The current TypeC and HDMI system functions are relatively independent, and a user brings much inconvenience in the using process; for a designer, two different interfaces need to be provided for two different wires, which brings larger size and cost to the product. Therefore, the invention of a type c and HDMI two-in-one transmission display control circuit is a problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in, to prior art's above-mentioned defect, provide a two unification transmission display control circuit of TypeC and HDMI and device.

In a first aspect, the utility model discloses a type C and HDMI two-in-one transmission display control circuit, which comprises a transmission sub-circuit and a display control sub-circuit; the transmission sub-circuit comprises an HDMI transmission module and a TypeC transmission module; the HDMI transmission module and the TypeC transmission module are respectively and electrically connected with the display control sub-circuit; the display control sub-circuit comprises a TypeC female head unit, a PD protocol module, a signal turning module, a signal selection module, a video conversion module and a display interface; the HDMI transmission module and the TypeC transmission module are used for being electrically connected with the TypeC female head unit, the PD protocol module, the signal overturning module and the signal selecting module are respectively electrically connected with the TypeC female head unit, the video conversion module is respectively electrically connected with the PD protocol module, the signal overturning module and the signal selecting module, and the display interface is electrically connected with the video conversion module.

Preferably, the HDMI transmission module includes a first TypeC male connector, an HDMI male connector, a first resistor, and a second resistor; the public first end of HDMI to eleventh end respectively with public first end to the eleventh end electric connection of first TypeC, the public twelfth end of HDMI respectively with the first end of first resistance reaches the first end electricity of second resistance is connected, the second end of first resistance with the twelfth end electric connection of public first TypeC, the second end of second resistance with the thirteenth end electric connection of public first TypeC.

Preferably, the TypeC female unit comprises a TypeC female, a third resistor and a fourth resistor; the first end to the eleventh end of the female head of TypeC are used for being electrically connected with the first end to the eleventh end of the male head of the first TypeC, the twelfth end of the female head of TypeC is electrically connected with the first end of the third resistor, the second end of the third resistor is respectively electrically connected with the first end of the fourth resistor and the first end of the video conversion module, and the second end of the fourth resistor is electrically connected with the input power supply.

Preferably, the signal selection module includes a signal selector, a first triode, a fifth resistor and a sixth resistor; a first end and a second end of the signal selector are respectively electrically connected with a first end of the fifth resistor, a second end of the fifth resistor is electrically connected with the input power supply, a collector of the first triode is electrically connected with a first end of the fifth resistor, a third end of the signal selector is respectively electrically connected with a tenth end of the first TypeC male connector and an eleventh end of the TypeC female connector, a fourth end of the signal selector is electrically connected with the input power supply, a fifth end of the signal selector is electrically connected with the TypeC transmission module, a sixth end and a seventh end of the signal selector are both electrically connected with the signal turning module and the second end of the video conversion module, an eighth end of the signal selector is electrically connected with the PD protocol module, a ninth end of the signal selector is grounded, and a ninth end of the signal selector is electrically connected with the PD protocol module, the emitting electrode of the first triode is grounded, the base electrode of the first triode is electrically connected with the first end of the sixth resistor, and the second end of the sixth resistor is electrically connected with the video conversion module.

Preferably, the first end of the signal turning module is electrically connected to the sixth end and the seventh end of the signal selector, the second end and the third end of the signal turning module are electrically connected to the third end and the fourth end of the video conversion module, respectively, and the fourth end to the eleventh end of the signal turning module are electrically connected to the fifth end to the twelfth end of the video conversion module, respectively.

Preferably, the signal selector has a model number SGM3002 XMS.

In a second aspect, the present invention also discloses a device, which comprises the first aspect, a type c and HDMI two-in-one transmission display control circuit.

The utility model discloses a two unification transmission display control circuit of TypeC and HDMI has following beneficial effect, the utility model discloses a two unification transmission display control circuit of TypeC and HDMI includes: a transmission sub-circuit and a display control sub-circuit; the transmission sub-circuit comprises an HDMI transmission module and a TypeC transmission module; the HDMI transmission module and the TypeC transmission module are respectively and electrically connected with the display control sub-circuit; the display control sub-circuit comprises a TypeC female head unit, a PD protocol module, a signal turning module, a signal selection module, a video conversion module and a display interface; the HDMI transmission module and the TypeC transmission module are used for being electrically connected with the TypeC female head unit, the PD protocol module, the signal overturning module and the signal selecting module are respectively electrically connected with the TypeC female head unit, the video conversion module is respectively electrically connected with the PD protocol module, the signal overturning module and the signal selecting module, and the display interface is electrically connected with the video conversion module. The HDMI transmission module is used for being connected with HDMI equipment to realize the transmission of an HDMI signal source; the TypeC transmission module is used for connecting TypeC equipment to realize transmission of a TypeC signal source; the TypeC female head unit is used for receiving the HDMI signal source or the TypeC signal source; the PD protocol module is used for identifying the positive and negative insertion states of the insertion joint of the TypeC female head unit; the signal turning module is used for turning over a signal when the insertion interface is reversely inserted; the signal selection module is used for identifying the HDMI signal source and the TypeC signal source and switching to correspondingly output; the video conversion module is used for converting the HDMI signal source or the TypeC signal source into a video signal and outputting the video signal to the display equipment connected with the display interface for display. Therefore, the utility model discloses unify TypeC and HDMI signal and transmit at a port, it is convenient to carry; the utility model discloses automatic discern type C transmission module or HDMI transmission module's positive and negative state of inserting, it is convenient to use, and user experience is high.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below with reference to the accompanying drawings and embodiments, wherein the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work according to the drawings:

fig. 1 is a schematic block diagram of a type c and HDMI two-in-one transmission display control circuit according to a preferred embodiment of the present invention;

fig. 2 is a schematic block diagram of a type c and HDMI two-in-one transmission display control circuit according to another preferred embodiment of the present invention;

fig. 3 is a schematic block diagram of a type c and HDMI two-in-one transmission display control circuit according to a preferred embodiment of the present invention;

fig. 4 is a circuit diagram of an HDMI transmission module of a type c and HDMI two-in-one transmission display control circuit according to a preferred embodiment of the present invention;

fig. 5 is a circuit diagram illustrating a type c female connector unit, a PD protocol module, a signal flip module, and a signal selection module of a type c and HDMI two-in-one transmission display control circuit according to a preferred embodiment of the present invention;

fig. 6 is a circuit diagram of the video conversion module and the display interface of the type c and HDMI two-in-one transmission display control circuit according to the preferred embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, a clear and complete description will be given below with reference to the technical solutions of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Example one

Fig. 1 and 2 show a preferred embodiment of the present invention, which includes a transmission sub-circuit 1 and a display control sub-circuit 2; the transmission sub-circuit 1 comprises an HDMI transmission module 11 and a TypeC transmission module 12; the HDMI transmission module 11 and the TypeC transmission module 12 are electrically connected to the display control sub-circuit 2, respectively; the display control sub-circuit 2 comprises a TypeC female head unit 21, a PD protocol module 22, a signal turning module 23, a signal selection module 24, a video conversion module 25 and a display interface 26; the HDMI transmission module 11 and the TypeC transmission module 12 are configured to be electrically connected to the TypeC female head unit 21, the PD protocol module 22, the signal flipping module 23, and the signal selecting module 24 are respectively electrically connected to the TypeC female head unit 21, the video conversion module 25 is respectively electrically connected to the PD protocol module 22, the signal flipping module 23, and the signal selecting module 24, and the display interface 26 is electrically connected to the video conversion module 25.

Preferably, the HDMI transmission module 11 is configured to be connected to an HDMI device, so as to implement transmission of an HDMI signal source; the TypeC transmission module 12 is used for connecting TypeC equipment to realize transmission of a TypeC signal source; the TypeC female unit 21 is configured to receive the HDMI signal source or the TypeC signal source; the PD protocol module 22 is used for identifying the positive and negative plugging states of the plugging connector of the TypeC female head unit; the signal turning module 23 is used for turning signals when the insertion interface is reversely inserted; the signal selection module 24 is configured to identify the HDMI signal source and the TypeC signal source, and switch and output the HDMI signal source and the TypeC signal source to the video conversion module 25 correspondingly; the video conversion module 25 is configured to convert the HDMI signal source or the TypeC signal source into a video signal, and output the video signal to the display device connected to the display interface 26 for display. Therefore, the utility model discloses unify TypeC and HDMI signal and transmit at a port, it is convenient to carry; the utility model discloses automatic discern type C transmission module or HDMI transmission module's positive and negative state of inserting, it is convenient to use, and user experience is high.

Preferably, referring to fig. 4, the HDMI transmitting module 11 includes a first TypeC male plug J2, an HDMI male plug J1, a first resistor R5, and a second resistor R6; the first end to the tenth end of the HDMI male header J1, namely, the 1 pin, the 3 pin, the 4 pin, the 6 pin, the 7 pin, the 9 pin, the 10 pin, the 12 pin, the 15 pin, the 16 pin and the 19 pin, are electrically connected to the first end to the tenth end of the first TypeC male header J2, namely, B2, B3, a11, a10, B10, B11, A3, a2, B8, A8 and a5, respectively, the twelfth end, namely, the 11 pin, of the HDMI male header J1 is electrically connected to the first end of the first resistor R5 and the first end of the second resistor R6, the second end of the first resistor R5 is electrically connected to the twelfth end a12 of the first TypeC male header J2, and the second end of the second resistor R6 is electrically connected to the thirteenth end B12 of the first TypeC male header J2.

Preferably, referring to fig. 5, the TypeC female unit 21 includes a TypeC female J4, a third resistor R4, and a fourth resistor R3; first to tenth ends, namely B2, B3, a11, a10, B10, B11, A3, a2, B8, A8 and A5, of the TypeC female header J4 are used for being electrically connected with first to tenth ends, namely B2, B3, a11, a10, B10, B11, A3, a2, B8, A8 and A5, of the first TypeC male header J2, a twelfth end of the TypeC female header J4 is electrically connected with a first end of the third resistor R4, second ends of the third resistor R4 are respectively electrically connected with a first end of the fourth resistor R3 and a first end, namely 143 of the video conversion module 25, and a second end of the fourth resistor R3 is electrically connected with an input power supply.

Preferably, in this embodiment, when the HDMI transmission module is connected to an HDMI device and the first TypeC male plug J2 is being plugged into the TypeC female plug J4 of the display control sub-circuit 2, the first resistor R5 and the second resistor R6 are grounded, and a voltage divided by a pin B12 of the TypeC female plug J4 is R6/(R3+ R6); when the HDMI transmission module is connected into an HDMI device, when a first TypeC male connector J2 is reversely plugged onto a TypeC female connector J4 of the display control sub-circuit 2, the first resistor R5 and the second resistor R6 are grounded, and the voltage divided by a pin B12 of the TypeC female connector J4 is R5/(R3+ R5); when the TypeC transmission module is connected to a TypeC device to a TypeC female connector J4, the voltage of a Pin B12 on the TypeC female connector J4 is 0, and at the moment, the Pin3 and the Pin4 of the PD protocol module can perform CC communication through the PinA4 of the TypeC female connector J4 and the PinB5 and TypeC devices, so that the positive and negative insertion states of the TypeC device can be known. The pin B12 on the TypeC female J4 is connected to the video conversion module 25, and the video conversion module 25 identifies the positive and negative plugging states of the first TypeC male J2 when plugged-in devices are HDMI devices, TypeC devices and inserted HDMI devices by reading the input voltage of the pin B12 on the TypeC female J4; when the first TypeC male connector J2 is in the reverse insertion state, the video conversion module 25 controls the signal flipping module to flip signals through Pin 81; the video conversion module 25 switches data paths, and controls the PD protocol module to realize signal transmission between the HDMI device and the video conversion module 25; when the inserted device is a type c device, the PD protocol module 22 identifies a forward and reverse insertion state of the type c device interface, and if the inserted device is a reverse insertion, the video conversion module 25 controls the signal inversion module 23 to realize signal inversion through Pin 81; the video conversion module 25 switches a data path, and controls the PD protocol module to implement signal transmission between the TypeC device and the video conversion module 25.

Preferably, referring to fig. 5 and 6, the signal selection module 24 includes a signal selector IC1, a first transistor Q1, a fifth resistor R1, and a sixth resistor R2; the first terminal OUTB1 and the second terminal OUTB2 of the signal selector IC1 are electrically connected to the first terminal of the fifth resistor R1, the second terminal of the fifth resistor R1 is electrically connected to the input power source, the collector of the first transistor Q1 is electrically connected to the first terminal of the fifth resistor R1, the third terminal COM1 of the signal selector IC1 is electrically connected to the tenth terminal a5 of the first TypeC male connector J2 and the tenth terminal a5 of the TypeC female connector J4, the fourth terminal VCC of the signal selector IC1 is electrically connected to the input power source, the fifth terminal COM2 of the signal selector IC1 is electrically connected to the TypeC transmission module 12, the sixth terminal N1 and the seventh terminal N42 of the signal selector IC1 are electrically connected to the signal flipping module 23 and the second terminal of the video conversion module 25, i.e. the PD pin81, the eighth terminal 1 of the signal selector IC1 is electrically connected to the PD 4622, the ninth terminal GND of the signal selector IC1 is grounded, the ninth terminal OUTA2 of the signal selector IC1 is electrically connected to the PD protocol module 22, the emitter of the first transistor Q1 is grounded, the base of the first transistor Q1 is electrically connected to the first terminal of the sixth resistor R2, and the second terminal of the sixth resistor R2 is electrically connected to the video conversion module 25. In this embodiment, the signal selector IC1 has a model SGM3002XMS, and the video conversion module 25 has a model RTD 2556. In another preferred embodiment, the chip type of the signal selector and the video conversion module 25 is not particularly limited.

Preferably, referring to fig. 5, a first end, i.e. 8 pins, of the signal flipping module 23 is electrically connected to a sixth end N1 and a seventh end N2 of the signal selector IC1, a second end, i.e. 13 pins, and a third end, i.e. 14 pins, of the signal flipping module 23 are respectively connected to a third end, i.e. 137 pins, and a fourth end, i.e. 138 pins, of the video conversion module 25, and a fourth end, i.e. 15 pins, to a tenth end, i.e. 15 pins, to 24 pins, i.e. 97 pins to 104 pins, of the signal flipping module 23 are respectively electrically connected to a fifth end, to a twelfth end of the video conversion module 25. It can be understood that, in this embodiment, the chip model of the signal flipping module 23 is VL170, and the chip model of the PD protocol module is LDR 6282. In another preferred embodiment, the chip types of the signal flipping module 23 and the PD protocol module 23 are not specifically limited.

Example two

The utility model also discloses a device, including embodiment one a two unification transmission display control circuits of TypeC and HDMI.

To sum up, the type c and HDMI two-in-one transmission display control circuit provided by the present invention comprises a transmission sub-circuit 1 and a display control sub-circuit 2; the transmission sub-circuit 1 comprises an HDMI transmission module 11 and a TypeC transmission module 12; the HDMI transmission module 11 and the TypeC transmission module 12 are electrically connected to the display control sub-circuit 2, respectively; the display control sub-circuit 2 comprises a TypeC female head unit 21, a PD protocol module 22, a signal turning module 23, a signal selection module 24, a video conversion module 25 and a display interface 26; the HDMI transmission module 11 and the TypeC transmission module 12 are configured to be electrically connected to the TypeC female head unit 21, the PD protocol module 22, the signal flipping module 23, and the signal selecting module 24 are respectively electrically connected to the TypeC female head unit 21, the video conversion module 25 is respectively electrically connected to the PD protocol module 22, the signal flipping module 23, and the signal selecting module 24, and the display interface 26 is electrically connected to the video conversion module 25. The HDMI transmission module 11 is used for connecting with an HDMI device to realize transmission of an HDMI signal source; the TypeC transmission module 12 is used for connecting TypeC equipment to realize transmission of a TypeC signal source; the TypeC female unit 21 is configured to receive the HDMI signal source or the TypeC signal source; the PD protocol module 22 is used for identifying the positive and negative plugging states of the plugging connector of the TypeC female head unit; the signal turning module 23 is used for turning signals when the insertion interface is reversely inserted; the signal selection module 24 is configured to identify the HDMI signal source and the TypeC signal source, and switch and output the HDMI signal source and the TypeC signal source to the video conversion module 25 correspondingly; the video conversion module 25 is configured to convert the HDMI signal source or the TypeC signal source into a video signal, and output the video signal to the display device connected to the display interface 26 for display. Therefore, the utility model discloses unify TypeC and HDMI signal and transmit at a port, it is convenient to carry; the utility model automatically identifies the positive and negative insertion states of the TypeC transmission module 12; in addition, among the HDMI transmission module 11, through discerning divider resistance's resistance, discernment HDMI transmission module 11's positive reverse plug state, it is convenient to use, and user experience is high.

The type c and HDMI two-in-one transmission and display control circuit provided by the present invention is introduced in detail, and specific examples are applied herein to explain the principle and the implementation of the present invention, and the description of the above embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, to the general technical personnel in this field, according to the utility model discloses an idea, all can have the change part on concrete implementation and application scope, to sum up, this description content only is the utility model discloses an embodiment, does not consequently restrict the utility model discloses a patent scope, all utilize the equivalent structure or the equivalent flow transform that the content of the description and the attached drawing did, or directly or indirectly use in other relevant technical fields, all the same reason is included in the utility model discloses a patent protection scope. And should not be construed as limiting the invention.

Claims

1. The utility model provides a type C and HDMI two unification transmission display control circuit which characterized in that includes: a transmission sub-circuit and a display control sub-circuit; the transmission sub-circuit comprises an HDMI transmission module and a TypeC transmission module; the HDMI transmission module and the TypeC transmission module are respectively and electrically connected with the display control sub-circuit; the display control sub-circuit comprises a TypeC female head unit, a PD protocol module, a signal turning module, a signal selection module, a video conversion module and a display interface; the HDMI transmission module and the TypeC transmission module are used for being electrically connected with the TypeC female head unit, the PD protocol module, the signal overturning module and the signal selecting module are respectively electrically connected with the TypeC female head unit, the video conversion module is respectively electrically connected with the PD protocol module, the signal overturning module and the signal selecting module, and the display interface is electrically connected with the video conversion module.

2. The TypeC and HDMI two-in-one transmission display control circuit according to claim 1, wherein said HDMI transmission module comprises a first TypeC male connector, an HDMI male connector, a first resistor and a second resistor; the public first end of HDMI to eleventh end respectively with public first end to the eleventh end electric connection of first TypeC, the public twelfth end of HDMI respectively with the first end of first resistance reaches the first end electricity of second resistance is connected, the second end of first resistance with the twelfth end electric connection of public first TypeC, the second end of second resistance with the thirteenth end electric connection of public first TypeC.

3. The TypeC and HDMI two-in-one transmission display control circuit according to claim 2, wherein said TypeC female unit comprises a TypeC female, a third resistor and a fourth resistor; the first end to the eleventh end of the female head of TypeC are used for being electrically connected with the first end to the eleventh end of the male head of the first TypeC, the twelfth end of the female head of TypeC is electrically connected with the first end of the third resistor, the second end of the third resistor is respectively electrically connected with the first end of the fourth resistor and the first end of the video conversion module, and the second end of the fourth resistor is electrically connected with the input power supply.

4. The TypeC and HDMI two-in-one transmission display control circuit according to claim 3, wherein said signal selection module comprises a signal selector, a first triode, a fifth resistor and a sixth resistor; a first end and a second end of the signal selector are respectively electrically connected with a first end of the fifth resistor, a second end of the fifth resistor is electrically connected with the input power supply, a collector of the first triode is electrically connected with a first end of the fifth resistor, a third end of the signal selector is respectively electrically connected with a tenth end of the first TypeC male connector and an eleventh end of the TypeC female connector, a fourth end of the signal selector is electrically connected with the input power supply, a fifth end of the signal selector is electrically connected with the TypeC transmission module, a sixth end and a seventh end of the signal selector are both electrically connected with the signal turning module and the second end of the video conversion module, an eighth end of the signal selector is electrically connected with the PD protocol module, a ninth end of the signal selector is grounded, and a ninth end of the signal selector is electrically connected with the PD protocol module, the emitting electrode of the first triode is grounded, the base electrode of the first triode is electrically connected with the first end of the sixth resistor, and the second end of the sixth resistor is electrically connected with the video conversion module.

5. The type C and HDMI two-in-one transmission display control circuit according to claim 4, wherein the first terminal of the signal flipping module is electrically connected to the sixth terminal and the seventh terminal of the signal selector, the second terminal and the third terminal of the signal flipping module are electrically connected to the third terminal and the fourth terminal of the video conversion module, respectively, and the fourth terminal to the eleventh terminal of the signal flipping module are electrically connected to the fifth terminal to the twelfth terminal of the video conversion module, respectively.

6. The TypeC and HDMI two-in-one transmission display control circuit according to claim 4, wherein the signal selector is SGM3002 XMS.

7. An apparatus comprising a type C and HDMI two-in-one transmission display control circuit according to any one of claims 1-6.