HDMI passive extender

Abstract

The utility model discloses a high-definition multimedia interface (HDMI) passive extender, which comprises an extended transmission line, a transmitting end and a receiving end, and is characterized in that the transmitting end and the receiving end are respectively connected with two ends of the extended transmission line; the transmitting end comprises a first terminal and a second terminal, the receiving end comprises a third terminal and a fourth terminal, two ends of the extended transmission line are provided with network connection ports, the second terminal and the fourth terminal are matched with the network connection ports, and the first terminal and the third terminal are HDMI terminals. The transmitting end and the receiving end are transmitted through the extended transmission line provided with the network connection port, an external power supply is not needed, the shell does not need a power supply structure design, through direct signal transmission, the distance extension of HDMI signal transmission is realized, the signal transmission in a short distance of 30 meters is realized, the overall structure is simpler, and the cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of signal transmission, and in particular to an HDMI passive extender. Background Art

[0002] At present, HDMI high-definition video transmission technology is widely used. However, with current technology, the effective transmission distance of HDMI signal output by HDMI signal source is 15 meters to 20 meters. Beyond this distance, the signal strength will gradually decrease. As the distance increases, the HDMI signal will be seriously distorted, resulting in unstable picture quality at the receiving end, or even the inability to display the picture.

[0003] Existing HDMI extenders all require an external power adapter for power supply, which increases the overall cost of the extender when achieving short-distance signal transmission of 30 meters. Utility Model Content

[0004] The technical problem to be solved by the present application is that the existing HDMI extenders need to be powered by an external power adapter, and when realizing signal transmission over a short distance of 30 meters, the overall cost of the extender increases.

[0005] In order to solve the above technical problem or at least partially solve the above technical problem, the present application provides an HDMI passive extender.

[0006] The utility model discloses an HDMI passive extender, which comprises an extended transmission line, a transmitting end and a receiving end, wherein the transmitting end and the receiving end are respectively connected to two ends of the extended transmission line;

[0007] The transmitting end includes a first terminal and a second terminal, the receiving end includes a third terminal and a fourth terminal, network connection ports are set at both ends of the extended transmission line, the second terminal and the fourth terminal are adapted to the network connection ports, and the first terminal and the third terminal are HDMI terminals.

[0008] Preferably, the transmitting end includes a first signal transmission module and a first signal protection module.

[0009] The first signal transmission module is connected to the first signal protection module, the first signal transmission module is connected to the second terminal, and the first signal protection module is connected to the first terminal.

[0010] Preferably, the transmitting end comprises a first control module, and the first control module is connected to the first terminal.

[0011] Preferably, the transmitting end includes a first power supply module;

[0012] The first power supply module is respectively connected to the first signal transmission module and the first terminal.

[0013] Preferably, the input voltage value of the input end of the first power module is 5V, and the output voltage value of the output end is 3.3V.

[0014] Preferably, the receiving end includes a second signal transmission module and a second signal protection module;

[0015] The second signal transmission module is connected to the second signal protection module, the second signal transmission module is connected to the fourth terminal, and the second signal protection module is connected to the third terminal.

[0016] Preferably, the receiving end comprises a second control module, and the second control module is connected to the third terminal.

[0017] Preferably, the receiving end includes a second power supply module;

[0018] The second power supply module is respectively connected to the second signal transmission module and the third terminal.

[0019] Preferably, the output voltage value of the output end of the second power supply module is 3.3V, and the input voltage value of the input end is 5V.

[0020] Preferably, the extended transmission line is a twisted pair cable with RJ45 terminals at both ends.

[0021] The above technical solution provided by this application has the following advantages compared with the prior art:

[0022] The present application provides an HDMI passive extender, in which a transmitting end and a receiving end are transmitted via an extended transmission line provided with a network connection port, and there is no need to provide a power adapter or other structures. Through direct signal transmission, the distance of HDMI signal transmission is extended, and signal transmission over a short distance of 30 meters is achieved. The overall structure is simpler and the cost is reduced.

[0023] The extender is powered directly by the power supply on the transmitter and receiver, requires low power consumption, and does not need to be connected to a power adapter for power supply, making it easier and more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0026] Figure 1 A schematic diagram of the structure of an HDMI passive extender provided in this application;

[0027] Figure 2 A schematic diagram of the structure of the transmitting end of an HDMI passive extender provided in this application Figure 1 ;

[0028] Figure 3 A schematic diagram of the structure of the transmitting end of an HDMI passive extender provided in this application Figure 2 ;

[0029] Figure 4 A schematic diagram of the structure of an extended transmission line of an HDMI passive extender provided in the present application;

[0030] Figure 5 A circuit diagram of a first terminal of an HDMI passive extender provided in the present application;

[0031] Figure 6 A circuit diagram of a second terminal of an HDMI passive extender provided in the present application;

[0032] Figure 7 A circuit diagram of a first power module of an HDMI passive extender provided in the present application;

[0033] Figure 8 A circuit diagram of a first control module of an HDMI passive extender provided in the present application;

[0034] Fig. 9 A circuit diagram of a first signal protection module of an HDMI passive extender provided in the present application;

[0035] Fig.10 A circuit diagram of a first signal transmission module of an HDMI passive extender provided in the present application;

[0036] Fig.11 A circuit diagram of a third terminal of an HDMI passive extender provided in the present application;

[0037] Fig.12 A circuit diagram of a fourth terminal of an HDMI passive extender provided by the present application;

[0038] Fig.13A circuit diagram of a second power supply module of an HDMI passive extender provided in the present application;

[0039] Fig.14 A circuit diagram of a second control module of an HDMI passive extender provided in the present application;

[0040] Fig.15 A circuit diagram of a second signal protection module of an HDMI passive extender provided in the present application;

[0041] Fig.16 A circuit diagram of a second signal transmission module of an HDMI passive extender provided in the present application.

[0042] Description of reference numerals:

[0043] 1. HDMI passive extender;

[0044] 11, transmitting end; 111, first terminal; 112, second terminal; 113, first power supply module; 114, first control module; 115, first signal protection module; 116, first signal transmission module; 1161, signal output end; 1162, power transmission end; 1163, signal input end;

[0045] 12, receiving end; 121, third terminal; 122, fourth terminal; 123, second power supply module; 124, second control module; 125, second signal protection module; 126, second signal transmission module; 1261, transmission output end; 1262, power supply loading end; 1263, transmission input end;

[0046] 13. Extend the transmission line; 131. Network connection port. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0048] See also Figure 1-16 The utility model discloses an HDMI passive extender 1, which includes an extended transmission line 13, a transmitting end 11, and a receiving end 12. The transmitting end 11 and the receiving end 12 are respectively connected to the two ends of the extended transmission line 13. Specifically, the transmitting end 11 is connected to the interface of a signal receiving device to transmit information to the device, and the receiving end 12 is connected to the interface of the signal transmitting device to receive the information sent by the device. The length of the extended transmission line 13 is within 30 meters.

[0049] The extended transmission line 13 is a twisted pair cable with RJ45 terminals at both ends.

[0050] The transmitting end 11 includes a first terminal 111 and a second terminal 112, the receiving end 12 includes a third terminal 121 and a fourth terminal 122, network connection ports 131 are set at both ends of the extended transmission line 13, the second terminal 112 and the fourth terminal 122 are adapted to the network connection port 131, and the first terminal 111 and the third terminal 121 are HDMI terminals.

[0051] Specifically, the transmitting end 11 and the receiving end 12 are transmitted through the extended transmission line 13 provided with the network connection port 131, and there is no need to set up a power adapter and other structures. Through direct signal transmission, the distance of HDMI signal transmission is extended, and the signal transmission over a short distance of 30 meters is achieved. The overall structure is simpler and the cost is reduced. Furthermore, the extender is directly powered by the power supply on the transmitting end 11 and the receiving end 12, and the required power consumption is low. It can be powered and driven without connecting a power adapter, and it is simpler and more convenient to use.

[0052] The transmitting end 11 includes a first power supply module 113, a first control module 114, a first signal transmission module 116 and a first signal protection module 115. The first signal transmission module 116 is connected to the first signal protection module 115, the first signal transmission module 116 is connected to the second terminal 112, the first signal protection module 115 is connected to the first terminal 111, the first control module 114 is connected to the first terminal 111, and the first power supply module 113 is respectively connected to the first signal transmission module 116 and the first terminal 111.

[0053] Specifically, the first power supply module 113 is respectively connected to the first control module 114, the first signal transmission module 116, the first terminal 111 and the second terminal 112, and supplies power to other modules through the power signal in the input signal of the second terminal 112 to drive each module. The first power supply module 113 converts the transmitted power signal into a corresponding output power voltage, and then transmits it from the first terminal 111. The first control module 114 controls the operation of each module, and the control signal transmits information and EDID information according to the HDMI protocol. The first signal protection module 115 can allow the transmitted signal to be protected from overvoltage and static electricity, so as to maintain the authenticity of the signal transmission.

[0054] The first end of the first terminal 111 transmits a TX_2+ signal, the third end transmits a TX_2- signal, the fourth end transmits a TX_1+ signal, the sixth end transmits a TX_1- signal, the seventh end transmits a TX_0+ signal, the ninth end transmits a TX_0- signal, the tenth end transmits a TX_C+ signal, the twelfth end transmits a TX_C- signal, the fifteenth end transmits an SCL signal, the sixteenth end transmits an SDA signal, and the eighteenth and nineteenth ends transmit a power signal. The first terminal 111 transmits the signal to the interface of the signal receiving device according to the HDMI protocol.

[0055] The first end of the second terminal 112 transmits the TX_D0- signal, the second end transmits the TX_D0+ signal, the third end transmits the TX_CLK+ signal, the fourth end transmits the TX_D1- signal, the fifth end transmits the TX_D1+ signal, the sixth end transmits the TX_CLK- signal, the seventh end transmits the TX_D2- signal, and the eighth end transmits the TX_D2+ signal. The second terminal 112 receives the signal transmitted by the extended transmission line 13.

[0056] The first power module 113 includes a chip U1 and a capacitor, wherein the chip U1 is a power chip, the input voltage value of the input end of the first power module 113 is 5V, and the output voltage value of the output end is 3.3V.

[0057] The first control module 114 includes a chip U2 and a capacitor, wherein the chip U2 is a control processing chip, the fifth and sixth ends of the chip U2 are connected to the fifteenth and sixteenth ends of the first terminal 111, and the eighth end of U2 is connected to the output end of the first power module 113, and is powered and driven by the first power module 113.

[0058] The first signal transmission module 116 includes a signal output terminal 1161 , a power transmission terminal 1162 , and a signal input terminal 1163 . The signal input terminal 1163 is connected to the signal output terminal 1161 and the power transmission terminal 1162 , respectively.

[0059] The signal output terminal 1161 transmits TX_2+ signal, TX_2- signal, TX_1+ signal, TX_1- signal, TX_0+ signal, TX_0- signal, TX_C+ signal, and TX_C- signal respectively, and is respectively connected to the first end, the third end, the fourth end, the sixth end, the seventh end, the ninth end, the tenth end, and the twelfth end of the first terminal 111 to transmit the corresponding signals.

[0060] The power transmission terminal 1162 is connected to the input terminal of the first power module 113. The power transmission terminal 1162 includes multiple resistors and multiple capacitors. Each signal input terminal 1163 is respectively connected to a resistor and a capacitor, and then the signal is output from the signal output terminal 1161. The power signal in the signal transmitted by the extended transmission line 13 can be separated, and then the data signal is transmitted according to the data channel.

[0061] The signal input terminal 1163 transmits the TX_D2+ signal, TX_D2- signal, TX_D1+ signal, TX_D1- signal, TX_D0+ signal, TX_D0- signal, TX_CLK+ signal, and TX_CLK- signal respectively; the signal input terminal 1163 is respectively connected to the eighth terminal, the seventh terminal, the fifth terminal, the fourth terminal, the second terminal, the first terminal, the third terminal, and the sixth terminal of the second terminal 112 to transmit the corresponding signals.

[0062] The first signal protection module 115 includes a chip U3 and a chip U4, wherein the chip U3 and the chip U4 are the same type of chips and can perform overvoltage protection and electrostatic protection to make signal transmission more stable and safe. The first signal protection module 115 processes the signal of the second terminal 112 through the chips U3 and U4 and then transmits it from the first terminal 111.

[0063] The receiving end 12 includes a second power supply module 123, a second control module 124, a second signal transmission module 126 and a second signal protection module 125, the second signal transmission module 126 is connected to the second signal protection module 125, the second signal transmission module 126 is connected to the fourth terminal 122, the second signal protection module 125 is connected to the third terminal 121, the receiving end 12 includes the second control module 124 is connected to the third terminal 121, and the second power supply module 123 is respectively connected to the second signal transmission module 126 and the third terminal 121.

[0064] Specifically, the second power supply module 123 is respectively connected to the second control module 124, the second signal transmission module 126, the third terminal 121 and the fourth terminal 122, and supplies power to other modules through the power signal in the input signal of the third terminal 121 to drive each module. The second power supply module 123 converts the transmitted power signal into a corresponding output power voltage, and then transmits it from the fourth terminal 122. The second control module 124 controls the operation of each module, and the control signal transmits information and EDID information according to the HDMI protocol. The second signal protection module 125 can allow the transmitted signal to be protected from overvoltage and static electricity, so as to maintain the authenticity of the signal transmission.

[0065] The first end of the third terminal 121 transmits a TX_2+ signal, the third end transmits a TX_2- signal, the fourth end transmits a TX_1+ signal, the sixth end transmits a TX_1- signal, the seventh end transmits a TX_0+ signal, the ninth end transmits a TX_0- signal, the tenth end transmits a TX_C+ signal, the twelfth end transmits a TX_C- signal, the fifteenth end transmits a FB1 signal, the sixteenth end transmits a FB signal, and the eighteenth end transmits a power signal. The third terminal 121 receives a signal transmitted by an interface of a signal transmitting device according to the HDMI protocol.

[0066] The first end of the fourth terminal 122 transmits the TX_D0- signal, the second end transmits the TX_D0+ signal, the third end transmits the TX_CLK+ signal, the fourth end transmits the TX_D1- signal, the fifth end transmits the TX_D1+ signal, the sixth end transmits the TX_CLK- signal, the seventh end transmits the TX_D2- signal, and the eighth end transmits the TX_D2+ signal. The second terminal 112 receives the signal transmitted by the extended transmission line 13.

[0067] The second power module 123 includes a chip U5 and a capacitor, wherein the chip U5 is a power chip. The output voltage value of the output end of the second power module 123 is 3.3V, and the input voltage value of the input end is 5V.

[0068] The second control module 124 includes a chip U6 and a capacitor, wherein the chip U6 is a control processing chip, and a fifth terminal of the chip U6 is connected to the fourteenth terminal of the first terminal 111 .

[0069] The second signal transmission module 126 includes a transmission output terminal 1261 , a power loading terminal 1262 , and a transmission input terminal 1263 . The transmission input terminal 1263 is connected to the transmission output terminal 1261 and the power loading terminal 1262 , respectively.

[0070] The transmission input terminal 1263 transmits TX_2+ signal, TX_2- signal, TX_1+ signal, TX_1- signal, TX_0+ signal, TX_0- signal, TX_C+ signal, and TX_C- signal respectively, and is respectively connected to the first end, the third end, the fourth end, the sixth end, the seventh end, the ninth end, the tenth end, and the twelfth end of the third terminal 121 to transmit the corresponding signals.

[0071] The power loading terminal 1262 is connected to the output terminal of the second power module 123. The power loading terminal 1262 includes multiple resistors and multiple capacitors. Each transmission input terminal 1263 is respectively connected to a resistor and a capacitor, and then the signal is output from the transmission output terminal 1261. By loading voltage on the signal input terminal 1163, the signal quality can be made more stable, the transmission capacity of the signal can be improved, and distortion can be avoided during the transmission of the extender.

[0072] The transmission output terminal 1261 transmits TX_D2+ signal, TX_D2- signal, TX_D1+ signal, TX_D1- signal, TX_D0+ signal, TX_D0- signal, TX_CLK+ signal, and TX_CLK- signal respectively; the transmission output terminal 1261 is respectively connected to the eighth terminal, the seventh terminal, the fifth terminal, the fourth terminal, the second terminal, the first terminal, the third terminal, and the sixth terminal of the fourth terminal 122 to transmit the corresponding signals.

[0073] The second signal protection module 125 includes a chip U7 and a chip U8, wherein the chip U7 and the chip U8 are the same type of chips and can perform overvoltage protection and electrostatic protection to make signal transmission more stable and safe. The second signal protection module 125 processes the signal of the third terminal 121 through the chips U3 and U4 and then transmits it from the fourth terminal 122.

[0074] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0075] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0076] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0077] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be connected, detachably connected, or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0078] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0079] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms should not be understood as necessarily being directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0080] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include these modifications and variations.

[0081] The above is a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An HDMI passive extender, characterized in that: It includes an extended transmission line, a transmitting end, and a receiving end, wherein the transmitting end and the receiving end are respectively connected to two ends of the extended transmission line; The transmitting end includes a first terminal and a second terminal, the receiving end includes a third terminal and a fourth terminal, network connection ports are set at both ends of the extended transmission line, the second terminal and the fourth terminal are adapted to the network connection ports, and the first terminal and the third terminal are HDMI terminals.

2. The HDMI passive extender according to claim 1, characterized in that: The transmitting end includes a first signal transmission module and a first signal protection module. The first signal transmission module is connected to the first signal protection module, the first signal transmission module is connected to the second terminal, and the first signal protection module is connected to the first terminal.

3. The HDMI passive extender according to claim 1, characterized in that: The transmitting end includes a first control module, and the first control module is connected to the first terminal.

4. The HDMI passive extender according to claim 2, characterized in that: The transmitting end includes a first power supply module; The first power supply module is respectively connected to the first signal transmission module and the first terminal.

5. The HDMI passive extender according to claim 4, characterized in that: The input voltage value of the input end of the first power supply module is 5V, and the output voltage value of the output end is 3.3V.

6. The HDMI passive extender according to claim 1, characterized in that: The receiving end includes a second signal transmission module and a second signal protection module; The second signal transmission module is connected to the second signal protection module, the second signal transmission module is connected to the fourth terminal, and the second signal protection module is connected to the third terminal.

7. The HDMI passive extender according to claim 1, characterized in that: The receiving end includes a second control module, and the second control module is connected to the third terminal.

8. The HDMI passive extender according to claim 6, characterized in that: The receiving end includes a second power supply module; The second power supply module is respectively connected to the second signal transmission module and the third terminal.

9. The HDMI passive extender according to claim 8, characterized in that: The output voltage value of the output end of the second power supply module is 3.3V, and the input voltage value of the input end is 5V.

10. The HDMI passive extender according to claim 1, characterized in that: The extended transmission line adopts a twisted pair with RJ45 terminals at both ends.

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