CN213305559U

CN213305559U - HDMI external connection processing device based on HDMI detection power supply automatic identification

Info

Publication number: CN213305559U
Application number: CN202022571897.7U
Authority: CN
Inventors: 李鑫建
Original assignee: Sonln Electronic Co ltd
Current assignee: Sonln Electronic Co ltd
Priority date: 2020-11-09
Filing date: 2020-11-09
Publication date: 2021-05-28
Anticipated expiration: 2030-11-09

Abstract

The utility model discloses a detect power automatic identification HDMI external connection processing apparatus based on HDMI, including equipment main part, HDMI display device and HDMI collection equipment, four corners of equipment main part bottom are equipped with the supporting seat, the front end of equipment main part is equipped with first control switch and power plug, the left side of equipment main part is equipped with first HDMI port, second HDMI port and first operating button, be connected through first data line between equipment main part and the HDMI display device, be connected through the second data line between equipment main part and the HDMI collection equipment. The device can identify whether the Source device or the Sink device is connected so as to turn on or off an idle part circuit of the device, and can clearly prompt the error of an operator.

Description

HDMI external connection processing device based on HDMI detection power supply automatic identification

Technical Field

The utility model relates to a high definition data transmission communication electronics's field is mainly to detecting and using and transmitting high definition data communication equipment or system based on the HDMI signal.

Background

In HDMI, having an audio-video output device is called an HD signal Source (Source). The device receiving the audio-video signal is called a DH receiver (Sink).

Generally, HDMI signals can only be fixed input or output HD signals through device transmission. Currently, HD signal devices with HDMI interfaces can only rely on detecting a level signal of HPD (Hot plug) to determine whether a receiving device is connected. The HDMI data signal is transmitted immediately as long as a high-level signal is considered as a Sink device, and unnecessary resource loss of signal resources is caused by the detection mode. Meanwhile, the operation is not flexible. For example, a high definition player (HD Play) having an HDMI interface has a signal input interface and a signal output interface. The output interface is used for providing HDMI data to Sink equipment, and the input interface is used for externally providing the HDMI data to HD Play for internal data backup. In application, whether the HDMI port is input or output and is connected with other corresponding equipment needs to be selected, whether the HDMI port is connected with the Source equipment or Sink equipment cannot be identified, so that idle parts of circuits of the equipment are turned on or off, and errors of an operator cannot be clearly prompted.

In view of the above problems, the present invention improves the HDMI device to automatically detect and automatically start and stop the circuits of the HDMI device that need to be operated and idle circuits in the signal path connected to other HDMI devices.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a detect power automatic identification HDMI external connection processing apparatus in order to solve the problem that proposes in the above-mentioned background art based on HDMI.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a detect power automatic identification HDMI external connection processing apparatus based on HDMI, includes equipment main part, HDMI display device and HDMI collection equipment, four corners of equipment main part bottom are equipped with the supporting seat, the front end of equipment main part is equipped with first control switch and power plug, the left side of equipment main part is equipped with first HDMI port, second HDMI port and first operating button, be connected through first data line between equipment main part and the HDMI display device, be connected through the second data line between equipment main part and the HDMI collection equipment.

Further, the bottom of HDMI display device is equipped with the gooseneck, the bottom of gooseneck is equipped with the bottom plate, be equipped with the display screen on the HDMI display device, the bottom of display screen is equipped with a plurality of second operating button, one side of display screen is equipped with second control switch.

Furthermore, a third control switch is arranged on the HDMI acquisition equipment.

Furthermore, a high-level electric signal acquisition circuit and a low-level electric signal acquisition circuit are connected to the first HDMI interface and the second HDMI interface.

Furthermore, the high-level voltage acquisition circuit comprises a triode Q4 which is connected with R10, wherein the emitter of the triode Q4 is connected with a pin of the HDMI interface 18, and the collector of the triode Q4 is connected with a pin of the microprocessor 15; a resistor R3 and a resistor R8 are connected with the base electrode of the triode Q4; the resistor R3 is connected between the base of the transistor Q4 and the power supply 5V; wherein the resistor R8 is connected between the base of the transistor Q4 and the power supply ground.

Furthermore, a resistor R7 and a triode Q5 are arranged in the device main body, and a resistor R7 is connected between the base of the triode Q5 and the pins of the first HDMI interface and the second HDMI interface 18; a resistor R6 is connected between the emitter and the base of the triode Q5; the emitter of the triode Q5 is also connected with a power supply 6V; a resistor R4 is connected between the collector of the triode Q5 and the base of the triode Q6; the collector of the triode Q5 is connected with the resistor R5 and is grounded; the emitter of the triode Q6 is grounded; a resistor R1 is connected between the collector of the triode Q6 and the base of the triode Q2; an emitter of the triode Q2 is connected with a power supply 6V; the collector of the triode Q2 is connected with the pin of the HDMI interface 18; a resistor R2 is connected between the collector of the triode Q6 and the base of the triode Q3, and the emitter of the triode Q3 is connected with a power supply 5V; the collector of the triode Q3 is connected with the resistor R9 and is grounded; the collector of the triode Q3 is also connected to a pin of the microprocessor 13; capacitors C1 and C2 are filter capacitors for power supply 6V; the capacitors C3 and C4 are filter capacitors for the 5V power supply.

Further, a pin 19 of the MCU pin is connected with a resistor R14 to a base electrode of a triode Q7; a resistor R13 is connected between the base electrode of the triode Q7 and the emitter electrode of the triode Q7; the emitter of the triode Q7 is grounded; the resistor is connected between a power supply 5V and the collector of the triode Q7; a resistor R11 is connected between the base of the triode Q1 and the middle of the triode Q7; an emitter of the triode Q1 is connected with 5V voltage of a power supply; and the collector of the triode is connected with the pin of the bidirectional TMDS signal conversion circuit module.

Further, a hot plug resistor R10 is arranged in the device main body; r10 is connected between HDMI interface 18 pin and 19 pins, and diode D1 is connected between HDMI interface 19 pin and microprocessing controller MCU pin 8 pins, and HDMI interface 19 pin is connected to hot swap switch circuit triode Q19 projecting pole, triode Q19 base connecting resistance R41 to microprocessing controller MCU pin 8 pins, triode Q19 collecting electrode ground.

Compared with the prior art, the beneficial effects of the utility model are that: the problem that the existing HD signal equipment with an HDMI interface can only rely on detecting the level signal of an HPD (Hot plug) to judge whether a receiving device is connected or not, the high level signal is considered as Sink equipment as long as the high level signal exists, the HDMI data signal can be transmitted immediately, and unnecessary resource loss of signal resources can be caused by the detection mode. And the equipment is flexible to operate. In application, whether the HDMI port is input or output and is connected with other corresponding equipment is not required to be selected, whether the HDMI port is connected with the Source equipment or Sink equipment can be identified, so that idle parts of circuits of the equipment can be turned on or off, and errors of an operator can be clearly prompted.

Drawings

FIG. 1 is a schematic view of the apparatus of the present invention;

FIG. 2 is a block diagram of the system of the present invention;

FIG. 3 is a schematic diagram of the present invention;

fig. 4 is a diagram illustrating a principle application case of the present invention.

The reference numerals are explained below:

in the figure: 1. an apparatus main body; 2. a supporting seat; 3. a first HDMI port; 4. a second HDMI port; 5. a first data line; 6. an HDMI display device; 7. a display screen; 8. a second operation button; 9. a gooseneck; 10. a base plate; 11. an HDMI acquisition device; 12. a third control switch; 13. a second data line; 14. a first operation button; 15. a first control switch; 16. a power plug; 17. a second control switch.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Several embodiments of the invention are given in the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a detect power automatic identification HDMI external connection processing apparatus based on HDMI, includes equipment main part, HDMI display device and HDMI collection equipment, four corners of equipment main part bottom are equipped with the supporting seat, the front end of equipment main part is equipped with first control switch and power plug, the left side of equipment main part is equipped with first HDMI port, second HDMI port and first operating button, be connected through first data line between equipment main part and the HDMI display device, be connected through the second data line between equipment main part and the HDMI collection equipment.

In order to further improve a service function based on HDMI detects power automatic identification HDMI external connection processing apparatus, the bottom of HDMI display device is equipped with the gooseneck, the bottom of gooseneck is equipped with the bottom plate, be equipped with the display screen on the HDMI display device, the bottom of display screen is equipped with a plurality of second operating button, one side of display screen is equipped with second control switch.

In order to further improve the use function of the HDMI detection power supply automatic identification HDMI external connection processing device, a third control switch is arranged on the HDMI acquisition equipment.

In order to further improve the using function of the HDMI detection power supply automatic identification HDMI external connection processing device, a high-level electric signal acquisition circuit and a low-level electric signal acquisition circuit are connected to the first HDMI interface and the second HDMI interface respectively, the high-level electric signal acquisition circuit and the low-level electric signal acquisition circuit can be used for detecting the voltage of a 5V power supply pin of the HDMI power supply, the level result analyzed by the detection circuits can be sent to a signal microprocessor MCU, the MCU analyzes and judges the level result and then outputs a signal to a level driving circuit to transmit the signal to a bidirectional TMDS signal conversion circuit, and the signal mode state of the bidirectional TMDS signal conversion circuit is controlled, so that the signal output mode or the signal input mode is determined.

In order to further improve the use function of the HDMI detection power supply-based automatic identification HDMI external connection processing device, the high-level voltage acquisition circuit comprises a triode Q4 connected with R10, wherein an emitter of the triode Q4 is connected with a pin of an HDMI interface 18, and a collector of the triode Q4 is connected with a pin of a microprocessor 15; a resistor R3 and a resistor R8 are connected with the base electrode of the triode Q4; the resistor R3 is connected between the base of the transistor Q4 and the power supply 5V; wherein the resistor R8 is connected between the base of the transistor Q4 and the power supply ground.

In order to further improve the use function of the HDMI detection power supply-based automatic identification HDMI external connection processing device, a resistor R7 and a triode Q5 are arranged in the device main body, and a resistor R7 is connected between the base of the triode Q5 and pins of the first HDMI interface and the second HDMI interface 18; a resistor R6 is connected between the emitter and the base of the triode Q5; the emitter of the triode Q5 is also connected with a power supply 6V; a resistor R4 is connected between the collector of the triode Q5 and the base of the triode Q6; the collector of the triode Q5 is connected with the resistor R5 and is grounded; the emitter of the triode Q6 is grounded; a resistor R1 is connected between the collector of the triode Q6 and the base of the triode Q2; an emitter of the triode Q2 is connected with a power supply 6V; the collector of the triode Q2 is connected with the pin of the HDMI interface 18; a resistor R2 is connected between the collector of the triode Q6 and the base of the triode Q3, and the emitter of the triode Q3 is connected with a power supply 5V; the collector of the triode Q3 is connected with the resistor R9 and is grounded; the collector of the triode Q3 is also connected to a pin of the microprocessor 13; capacitors C1 and C2 are filter capacitors for power supply 6V; the capacitors C3 and C4 are filter capacitors for the 5V power supply.

In order to further improve the use function of the HDMI detection power supply based automatic identification HDMI external connection processing device, a pin 19 of the MCU pin is connected with a resistor R14 to a base electrode of a triode Q7; a resistor R13 is connected between the base electrode of the triode Q7 and the emitter electrode of the triode Q7; the emitter of the triode Q7 is grounded; the resistor is connected between a power supply 5V and the collector of the triode Q7; a resistor R11 is connected between the base of the triode Q1 and the middle of the triode Q7; an emitter of the triode Q1 is connected with 5V voltage of a power supply; and the collector of the triode is connected with the pin of the bidirectional TMDS signal conversion circuit module.

In order to further improve the use function of the HDMI detection power supply based automatic recognition HDMI external connection processing device, a hot plug resistor R10 is arranged in the equipment main body; r10 is connected between HDMI interface 18 pin and 19 pins, and diode D1 is connected between HDMI interface 19 pin and microprocessing controller MCU pin 8 pins, and HDMI interface 19 pin is connected to hot swap switch circuit triode Q19 projecting pole, triode Q19 base connecting resistance R41 to microprocessing controller MCU pin 8 pins, triode Q19 collecting electrode ground.

Embodiments, a second object is to enable a circuit of a product that automatically recognizes that an externally linked electronic device is a signal receiving device (Sink). Said low-level electrical signal acquisition circuit is characterized by being able to identify a signal receiving device (Sink): the current limiting resistor R7 of the circuit is connected between the base electrode of the triode Q5 and the pin of the HDMI 18; a biasing resistor R6 is connected between the emitter and the base of the triode Q5; the emitter of the triode Q5 is also connected with a power supply 6V power supply, when the HDMI interface is externally connected with a signal receiving device (Sink), the pin of the HDMI interface 18 is at a low level, a current limiting resistor R7 has current passing through, voltage generated between the emitter and the base of the triode Q5 is greater than 0.3V, the collector of the triode Q5 outputs current, and the current flows from the current limiting resistor R4 connected with the collector of the triode Q5 to the base of the triode Q6; the transistor Q6 is conducted; the collector voltage of a triode Q6 is pulled down, a connecting resistor R1 between the collector of a triode Q6 and the base of a triode Q2 has current passing, the collector of the triode Q2 outputs 5.2V, meanwhile, a connecting resistor R2 between the collector of a triode Q6 and the base of a triode Q3 has current passing, the collector of the triode Q3 outputs 4.2V to a pin of a microprocessor 13, the pin of the microprocessor 19 outputs signal voltage, and a connecting resistor R14 with the pin 19 of a microprocessor controller provides an electric signal to the base of the triode Q7, and a connecting resistor R13 is connected between the base of the triode Q7 and the emitter of the triode Q35 7; the emitter of the triode Q7 is grounded; the resistor is connected between a power supply 5V and the collector of the triode Q7; a resistor R11 is connected between the base of the triode Q1 and the middle of the triode Q7; an emitter of the triode Q1 is connected with 5V voltage of a power supply; therefore, the collector of the transistor Q1 outputs signal voltage to the pin of the bidirectional TMDS (differential signaling) signal conversion circuit module connected thereto, and the bidirectional TMDS (differential signaling) signal conversion circuit module outputs signals corresponding to the TMDS output signal of the channel, and at this time, the HDMI interface is the signal source output port.

The second object of the present invention is to provide a circuit for a product to automatically recognize that an externally linked electronic device is a signal source device. The high level voltage acquisition circuit is characterized by being capable of identifying a Source device (Source): when the external of the HDMI 18 pin is connected with a signal source device, if the voltage of the HDMI 18 pin is higher than the sampling voltage of the base electrode of the triode Q4, the triode Q4 is conducted, the high level is output from the collector electrode of the triode Q4 and is transmitted to the pin connected with the microprocessor 15, after the pin received by the microprocessor 15 is high level, the pin of the microprocessor 8 is changed from the original low level to high level, meanwhile, the pin of the microprocessor 19 is changed from the original high level to low level 0V, the pin connecting resistor R14 of the microprocessor controller pin 19 provides an electric signal of 0V to the base electrode of the triode Q7, and the resistor R13 is connected between the base electrode of the triode Q7 and the emitter electrode; the emitter of the triode Q7 is grounded; the resistor is connected between a power supply 5V and the collector of the triode Q7; a resistor R11 is connected between the base of the triode Q1 and the middle of the triode Q7; an emitter of the triode Q1 is connected with 5V voltage of a power supply; therefore, the collector of the transistor Q1 does not output signal voltage to the pin of the bidirectional TMDS (differential signaling) signal conversion circuit module connected thereto, and the TMDS of the corresponding channel of the bidirectional TMDS (differential signaling) signal conversion circuit module is converted into a receiving signal, and at this time, the HDMI interface is a signal receiving port.

The problem that the existing HD signal equipment with an HDMI interface can only rely on detecting the level signal of an HPD (Hot plug) to judge whether a receiving device is connected or not, the high level signal is considered as Sink equipment as long as the high level signal exists, the HDMI data signal can be transmitted immediately, and unnecessary resource loss of signal resources can be caused by the detection mode. And the equipment is flexible to operate. In application, whether the HDMI port is input or output and is connected with other corresponding equipment is not required to be selected, whether the HDMI port is connected with the Source equipment or Sink equipment can be identified, so that idle parts of circuits of the equipment can be turned on or off, and errors of an operator can be clearly prompted.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a detect power automatic identification HDMI external connection processing apparatus based on HDMI, includes equipment subject, HDMI display device and HDMI collection equipment, its characterized in that: four corners of equipment main part bottom are equipped with the supporting seat, the front end of equipment main part is equipped with first control switch and power plug, the left side of equipment main part is equipped with first HDMI port, second HDMI port and first operating button, be connected through first data line between equipment main part and the HDMI display device, be connected through the second data line between equipment main part and the HDMI collection equipment.

2. The device according to claim 1, wherein the device is configured to detect the power supply and automatically recognize the external connection of the HDMI according to the HDMI detecting command: the bottom of HDMI display device is equipped with the volume although, the bottom of volume although is equipped with the bottom plate, be equipped with the display screen on the HDMI display device, the bottom of display screen is equipped with a plurality of second operating button, one side of display screen is equipped with second control switch.

3. The device according to claim 1, wherein the device is configured to detect the power supply and automatically recognize the external connection of the HDMI according to the HDMI detecting command: and a third control switch is arranged on the HDMI acquisition equipment.

4. The device according to claim 1, wherein the device is configured to detect the power supply and automatically recognize the external connection of the HDMI according to the HDMI detecting command: and the first HDMI interface and the second HDMI interface are both connected with a high-level electric signal acquisition circuit and a low-level electric signal acquisition circuit.

5. The device according to claim 4, wherein the device is configured to detect the power supply and automatically recognize the external connection of the HDMI according to the HDMI, and comprises: the high-level voltage acquisition circuit comprises a triode Q4 emitter connected with R10 and connected with an HDMI interface 18 pin, and a collector connected with a microprocessor 15 pin; a resistor R3 and a resistor R8 are connected with the base electrode of the triode Q4; the resistor R3 is connected between the base of the transistor Q4 and the power supply 5V; wherein the resistor R8 is connected between the base of the transistor Q4 and the power supply ground.

6. The device according to claim 1, wherein the device is configured to detect the power supply and automatically recognize the external connection of the HDMI according to the HDMI detecting command: a resistor R7 and a triode Q5 are arranged in the equipment main body, and the resistor R7 is connected between the base of the triode Q5 and the pins of the first HDMI interface and the second HDMI interface 18; a resistor R6 is connected between the emitter and the base of the triode Q5; the emitter of the triode Q5 is also connected with a power supply 6V; a resistor R4 is connected between the collector of the triode Q5 and the base of the triode Q6; the collector of the triode Q5 is connected with the resistor R5 and is grounded; the emitter of the triode Q6 is grounded; a resistor R1 is connected between the collector of the triode Q6 and the base of the triode Q2; an emitter of the triode Q2 is connected with a power supply 6V; the collector of the triode Q2 is connected with the pin of the HDMI interface 18; a resistor R2 is connected between the collector of the triode Q6 and the base of the triode Q3, and the emitter of the triode Q3 is connected with a power supply 5V; the collector of the triode Q3 is connected with the resistor R9 and is grounded; the collector of the triode Q3 is also connected to a pin of the microprocessor 13; capacitors C1 and C2 are filter capacitors for power supply 6V; the capacitors C3 and C4 are filter capacitors for the 5V power supply.

7. The device according to claim 1, wherein the device is configured to detect the power supply and automatically recognize the external connection of the HDMI according to the HDMI detecting command: the pin 19 of the MCU pin is connected with a resistor R14 to the base electrode of a triode Q7; a resistor R13 is connected between the base electrode of the triode Q7 and the emitter electrode of the triode Q7; the emitter of the triode Q7 is grounded; the resistor is connected between a power supply 5V and the collector of the triode Q7; a resistor R11 is connected between the base of the triode Q1 and the middle of the triode Q7; an emitter of the triode Q1 is connected with 5V voltage of a power supply; and the collector of the triode is connected with the pin of the bidirectional TMDS signal conversion circuit module.

8. The device according to claim 1, wherein the device is configured to detect the power supply and automatically recognize the external connection of the HDMI according to the HDMI detecting command: a hot-plug resistor R10 is arranged in the equipment main body; r10 is connected between HDMI interface 18 pin and 19 pins, and diode D1 is connected between HDMI interface 19 pin and microprocessing controller MCU pin 8 pins, and HDMI interface 19 pin is connected to hot swap switch circuit triode Q19 projecting pole, triode Q19 base connecting resistance R41 to microprocessing controller MCU pin 8 pins, triode Q19 collecting electrode ground.