CN220914598U

CN220914598U - Connector assembly and transmission line system

Info

Publication number: CN220914598U
Application number: CN202322222551.XU
Authority: CN
Inventors: 郑怡杰
Original assignee: Elka International Ltd
Current assignee: Elka International Ltd
Priority date: 2023-08-18
Filing date: 2023-08-18
Publication date: 2024-05-07
Anticipated expiration: 2033-08-18

Abstract

The utility model provides a connector assembly and a transmission line system, wherein the image transmission connector assembly comprises an image transmission joint and a circuit substrate at least comprising a regulating and controlling module. The circuit substrate is coupled with the pin set of the image transmission connector through the first setting pad set. The regulation module comprises a control unit and a relay unit, wherein the relay unit is configured to be coupled to at least one signal transmission pin in a pin group of the image transmission connector. The control unit is coupled to the relay unit through communication transmission, and the relay unit receives at least one relay parameter setting from the control unit through communication transmission to adjust signals transmitted to at least one signal transmission pin.

Description

Connector assembly and transmission line system

Technical Field

The utility model relates to a connector assembly and a transmission line system; and more particularly to a connector assembly and transmission line system having a control unit and a relay unit.

Background

To accommodate long-range transmission, active transmission lines provided with a relay unit are widely used. However, the relay parameters in the relay unit need to be adjusted according to different applications. For example, when the attenuation of the signals at the two ends of the active transmission line is greater than the standard specification, the relay parameters in the relay unit need to be adjusted so that the attenuation of the signals at the two ends of the active transmission line meets the standard specification. However, when the relay parameter is set improperly, it may cause the signal to be excessively amplified, resulting in the amplified signal being cut off or the eye test being failed.

The relay parameters of the relay units in the connector assembly need to be adjusted with, for example, the length of the transmission line, the wire diameter of the transmission line, or the material. However, in the present image transmission connector assembly, the means for adjusting the relay parameters of the relay unit is, for example, to adjust the layout of passive devices or the layout of conductive wires on the circuit substrate, so that the relay unit provides different relay parameters. As the number of relay parameter setting groups of the relay units increases, the number of material management for the circuit substrate and/or the passive component increases accordingly. Greatly increasing the cost of shipping, handling, and/or warehousing for the manufacturer.

Therefore, how to set the relay parameters for the relay units in the connector assembly in a simplified and single manner would be a great focus of development in the art.

Disclosure of utility model

One of the objectives of the present utility model is to simplify the hardware requirements for setting relay parameters for a relay unit in an image transmission connector assembly.

One of the objectives of the present utility model is to make the image transmission connector assembly suitable for transmission line systems with different transmission lengths without changing the hardware architecture.

The utility model provides an image transmission connector assembly, which comprises an image transmission joint and a circuit substrate at least comprising a regulating and controlling module. The circuit substrate is coupled with the pin set of the image transmission connector through the first setting pad set. The regulation module comprises a control unit and a relay unit, wherein the relay unit is configured to be coupled to at least one signal transmission pin in a pin group of the image transmission connector. Wherein a burning pin of the control unit is coupled to a pin of the pin set of the image transmission connector. The control unit is coupled to the relay unit through a data line and a clock line, and the relay unit receives at least one relay parameter setting from the control unit through communication transmission to adjust signals transmitted to at least one signal transmission pin.

In an embodiment, the circuit substrate further includes a second set of at least one signal set pad, and the signal set pad is coupled to the relay unit and is coupled to the at least one signal transmission pin through the relay unit.

In one embodiment, the communication transmission is configured to adapt to an Inter-integrated circuit (Inter-INTEGRATED CIRCUIT, I2C) communication protocol.

In one embodiment, when the control unit burns an instruction set, the pins are coupled to the burn pins; when the control unit completes the programming of the instruction set, the coupling between the pin and the programming pin is interrupted.

In one embodiment, the pin coupled to the writing pin is a low frequency pin in the pin set.

In one embodiment, the control unit stores an instruction set that causes the control unit to:

Establishing a communication connection with the relay unit; and providing at least one relay parameter setting for the relay unit.

In one embodiment, the operation of providing the at least one relay parameter setting to the relay unit includes writing a value to a register of the relay unit, the value corresponding to the at least one relay parameter setting.

In an embodiment, the circuit substrate further includes a power module coupled to at least one power pin of the pin set, and the power module is used for providing power required by the operation of the control module.

In one embodiment, the image transmission connector has an arrangement structure for limiting the arrangement directivity. The utility model provides a transmission line system which comprises a transmission cable and the image transmission connector assembly. The image transmission connector assembly is arranged on at least one end of the transmission cable.

In summary, the control unit may establish a communication connection with the relay unit, and control and set the relay unit. Thereby achieving the purpose of adjusting the relay parameters of the relay unit. Therefore, for various relay parameter settings on the image transmission connector assembly, the control unit can regulate and control the relay unit to correspond to the various relay parameter settings (for example, the relay parameters of the relay unit are set by instruction sets of different parameters) without changing the hardware architecture (for example, the circuit layout and/or elements on the circuit substrate) of the image transmission connector assembly. When the image transmission connector assembly needs to be matched with transmission cables with different lengths to form a transmission line system, the transmission line systems with different transmission lengths can meet the requirements of transmission quality and standard specifications through different relay parameters by using the same hardware architecture.

Drawings

The accompanying drawings are presented to aid in the description of various embodiments of the utility model. However, to simplify the drawing and/or highlight what is to be presented in the drawing, existing structures and/or elements in the drawing may be drawn in a simple schematic manner or presented in an omitted manner. On the other hand, the number of elements in the drawings may be singular or plural. The drawings presented in the present disclosure are only for purposes of illustrating the embodiments and are not to be construed as limiting the same.

Fig. 1 and fig. 2 are schematic structural diagrams of an image transmission connector assembly according to a first embodiment of the present utility model.

Fig. 3 is a block diagram of an image transmission connector assembly according to a first embodiment of the present utility model.

Fig. 4 is a schematic diagram of connection of a transmission line system according to a second embodiment of the present utility model.

Description of main reference numerals:

10. Image transmission connector assembly

11. Image transmission joint

111. Pin set

111-A arbitrary pin

111-DC direct current pin

111-S signal transmission pin

12. Circuit substrate

1201. First end

1202. Second end

1203. First surface

1204. A second surface

121. Regulation module

1211. Control unit

1212. Relay unit

122. First setting pad set

123. Second setting pad set

123-S signal setting pad

124. Power supply module

20. Transmission line system

21. Universal connector assembly

22. Image output device

23. Signal output device

C transmission cable

CS communication transmission

CL clock line

DL data line

VS signal

VS' relayed signal

PW power supply

Detailed Description

Any reference to elements herein using names such as "first," "second," etc. generally does not limit the number or order of such elements. Rather, these designations are used herein as a convenient way of distinguishing between two or more elements or instances of an element. It is, therefore, to be understood that the designations "first," "second," etc. in the claims do not necessarily correspond to the same designations in the written description. Furthermore, it should be understood that references to first and second elements do not indicate that only two elements can be employed or that the first element must precede the second element. As used herein, the terms "comprising," "including," "having," "containing," and the like are intended to be inclusive and mean an inclusion, but not limited to.

The term "coupled" is used herein to refer to either direct or indirect electrical coupling between two structures. For example, in one example of indirect electrical coupling, one structure may be coupled to another structure via a passive element such as a resistor, capacitor, or inductor.

In the present utility model, the words "exemplary," such as "are used to mean" serving as an example, instance, or illustration. Any implementation or aspect described herein as "exemplary," "for example," or "for example," is not necessarily to be construed as preferred or advantageous over other aspects of the utility model. The term "about" as used herein with respect to a specified value or characteristic is intended to mean within a certain value (e.g., 10%) of the specified value or characteristic.

First embodiment.

Referring to fig. 1 to 3, fig. 1 to 3 illustrate an image transmission connector assembly 10 including an image transmission connector 11 and a circuit substrate 12 including at least a control module 121. The circuit substrate 12 is coupled to the pin set 111 of the image transmission connector 11 through the first set of pads 122. The control module 121 includes a control unit 1211 and a relay unit 1212 configured to couple to at least one signal transmission pin 111-S of the pin set 111 of the image transmission connector 11. The control unit 1211 is coupled to the relay unit 1212 via a communication transmission CS, and the relay unit 1212 receives at least one relay parameter setting from the control unit 1211 via the communication transmission CS to adjust the signal VS transmitted to the at least one signal transmission pin 111-S.

Specifically, the specifications of the image transmission connector 11 may be selected from high-definition multimedia interface (HDMI), displayPort (DP) or any other image transmission connector. In one embodiment, the image transmission connector 11 has a setting structure for limiting the setting directivity so as to avoid the setting direction error. The image transmission connector 11 may be a plug (plug) or a socket (socket). Those skilled in the art will appreciate that the plug and socket of the present utility model may be equivalently exchanged and/or replaced without affecting the practice of the present utility model. The pin set 111 of the image transmission connector 11 may include pins corresponding to different tasks/functions. Taking the HDMI connector as an example, the pin set of the HDMI may have a dc signal pin, a high frequency signal pin, and/or a low frequency signal pin. The dc signal pin is, for example, a power pin for transmitting dc voltage power and a ground pin as a ground terminal. The high frequency signal pins are differential signal transmission pins, for example, HDMI, and there may be three to four differential signal transmission pin pairs for transmitting images or other high frequency signals. Low frequency signal pins such as consumer electronics control (Consumer Electronics Control, CEC) pins or HEAC pins are pins with low frequency signal transmission capability.

The material of the circuit substrate 12 is, for example, fiberglass, bakelite or other conventional substrate materials. The circuit substrate 12 may serve as a carrier to provide electronic components, chips, active/passive components, pins, or wires for placement. The circuit substrate 12 may be single-layer, double-layer, or multi-layer, depending on the complexity of the circuit and the mechanical constraints of the circuit. The first end 1201 of the circuit substrate 12 is an end connected to the image transmission connector 11, and a surface (e.g., the first surface 1203 or the second surface 1204) of the circuit substrate 12 is close to the first end 1201 and has a first set of pads 122, where the first set of pads 122 is configured to be coupled to the pin set 111 of the image transmission connector 11. The coupling means is, for example, a conventional connection means such as contact, welding or crimping. The second end 1202 of the circuit substrate 12 is configured to couple with a transmission cable C. The surface of the circuit substrate 12 (e.g., the first surface 1203 or the second surface 1204) has a second set of pads 123 near the second end 1202. The second set of pads 123 may be coupled to the core of the transmission cable C by welding or any existing process means. The second set of setting pads 123 has at least one signal setting pad 123-S that can be coupled to a high frequency transmission core of the transmission cable C configured to transmit a high frequency signal or a signal VS of an image. Taking HDMI as an example, the high frequency transmission line may be a differential signal transmission line. On the other hand, a circuit protection device such as a diode or a TVS device may be disposed on the circuit substrate 12 to protect the control module 121 on the circuit substrate 12.

The control module 121 disposed on the circuit substrate 12 may be implemented by a single chip or a multi-chip method. For example, taking a single chip as an example, the regulation module 121 may be a single chip, and the relay unit 1212 and the control unit 1211 are configured in the chip. On the other hand, the regulation module 121 may be composed of a plurality of chips by a circuit, and for example, the control module may include a chip or a chip set used as the control unit 1211 and a chip or a chip set used as the relay unit 1212. In other words, the form and kind of the adjusting module 121 are not limited in the present utility model, and any means for achieving the adjusting module 121 in the present utility model is within the scope of the present utility model. The relay unit 1212 and the control unit 1211 may be disposed on the first surface 1203 or the second surface 1204 of the circuit substrate 12, and preferably disposed between the first set of pads 122 and the second set of pads 123, so as to facilitate path planning of the conductor lines. It should be noted that fig. 1 and fig. 2 are only for illustrating the arrangement of the elements on the circuit substrate 12, and are not intended to limit the present utility model. The present utility model is not limited to the layout of the circuit configuration on the circuit substrate 12, and the components on the circuit substrate 12 may be selectively disposed on the first surface 1203 or the second surface 1204 of the circuit substrate 12 according to the existing operation of the circuit layout.

In an embodiment, the circuit substrate 12 may further have a power module 124 thereon. The power module 124 may be connected to a DC pin 111-DC (e.g., a ground pin, a power pin) in the pin set 111 of the image transmission connector 11 through a conductor wire, and converts the power transmitted by the image transmission connector 11 into a power PW required by the relay unit 1212 and/or the control unit 1211. Thus, the power management module 124 can still provide the power required by the relay unit 1212 and/or the control unit 1211 when the power specification (e.g., voltage, power) required by the relay unit 1212 and/or the control unit 1211 is different from the voltage specification provided by the DC pin 111-DC of the image transmission connector 11. However, the power required by the relay unit 1212 and/or the control unit 1211 may also be directly from the DC pin 111-DC of the power supply of the image transmission connector 11 or may be provided by the power core (e.g., DC 5V) and the ground core of the transmission cable C. The power supply means of the present utility model is not limited to the power management module 124.

The control unit 1211, such as a microprocessor, FPGA, application Specific Integrated Circuit (ASIC), system-on-a-chip (SoC), or multi-chip system, has an operational function and can be integrated on the circuit substrate 12 of the image transmission connector assembly 10. In this embodiment, the control unit 1211 is configured with the capability to regulate relay parameters of the relay unit 1212. Preferably, the control unit 1211 may store and operate in accordance with an instruction set. It should be noted that the present utility model is not limited to the recording mode of the instruction set in the control unit 1211.

In an embodiment, the control unit 1211 may be disposed on the circuit substrate 12 after the instruction set is burned in advance.

In one embodiment, the programming pin of the control unit 1211 may be configured to be coupled to any pin 111-a of the pin set 111 of the image transmission connector 11, and the control unit 1211 is programmed through any pin 111-a of the image transmission connector 11. It should be noted that, although the pin set 111 in fig. 3 can distinguish between the direct current pin 111-DC, the signal transmission pin 111-S and any pin 111-a. However, any pin 111-A in this embodiment may be any pin in pin set 111. In other words, the DC pins 111-DC and the signal transmission pins 111-S can also be configured to be coupled to the control unit 1211 and used for burning the control unit 1211.

In this embodiment, the control unit 1211 may be burned after the burning device is coupled to the pin of the image transmission connector 11. For example, the recording device may have a socket corresponding to the image transmission connector 11, and when the image transmission connector 11 is disposed in the recording device, the recording device may record the control unit 1211 through the pin 111-a of the pin set 111 of the image transmission connector 11 coupled to the control unit 1211. It should be noted that the control unit 1211 may be configured to be "couplable" to any of the pins 111-a, and the definition of "couplable" is that the control unit 1211 may be disconnected from or continue to be coupled to any of the pins 111-a of the image transmission connector 11 after the writing of the control unit 1211 is completed. For example, the control unit 1211 may be coupled to any pin 111-a of the image transmission connector 11 through a reserved conductor wire and/or a passive element (e.g., a resistor with zero ohm) on the circuit substrate 12, and the passive element may be removed or the conductor wire may be disconnected after the writing is completed. On the other hand, the pin 111-a and the control unit 1211 may be switched by a switch, a multiplexer, a selector, or a switch, and the switching or switching means should be defined as "couplable" in the present utility model. In this way, the influence of the control unit 1211 can be avoided when the image transmission connector assembly 10 performs signal transmission, or the control unit 1211 occupies the pin 111-a, resulting in the degradation of transmission quality.

On the other hand, the control unit 1211 may be burned through a low frequency pin that is not commonly used in the pin set 111 of the image transmission connector 11. For example, HDMI, CEC pins may be used for programming. Thus, after the control unit 1211 completes the programming of the instruction set, the control unit 1211 may not be disconnected from the low frequency pin. In other words, the control unit 1211 is burned by using the low frequency pin, which can avoid affecting the high frequency signal transmission or other signal transmission of the image transmission connector 11, and can reduce the extra time spent after the burning. On the other hand, the reserved coupling lines can be burned again or multiple times to the control unit 1211, facilitating testing of parameters or maintenance replacement.

In this embodiment, the recording device is an operation electronic device such as a desktop computer, a notebook computer, an industrial computer, and/or a tablet computer, and the recording device may also be an on-board recorder connected to the computer. The control unit 1211 may be directly configured by connecting the image transmission connector 11, so that the control unit 1211 may have flexibility in configuration, as compared with the control unit 1211 which is configured on the circuit board 12 of the image transmission connector assembly 10 after the instruction set is programmed. For example, when the control unit 1211 needs to be extended, adjusted, removed, replaced with firmware or an instruction set, only the image transmission connector 11 is connected by the recording device, and the corresponding setting (e.g. re-recording the other instruction set) is directly performed on the control unit 1211, so that the control unit 1211 does not need to be completely removed and replaced. Reworking may be avoided or the test/manufacturing flow may be simplified. Thereby enhancing cost management of the raw materials and/or man-hours.

The relay unit 1212 (driver) may, for example, relay the high frequency signal VS transmitted (e.g., received or transmitted) on at least one signal transmission pin 111-S of the image transmission connector assembly 10 into a relayed signal VS', such as signal enhancement, modulation or reproduction operations of signal equalization (equalizer), pre-emphasis (pre-emphasis) and/or de-amplification (de-emphasis). The set-up control unit 1211 may establish a communication connection with the relay unit 1212. Specifically, the control unit 1211 may have a physical line connection (e.g., a communication transmission CS on the circuit substrate 12) with the relay unit 1212. The control unit 1211 may establish a communication connection with the relay unit 1212 via a physical set of lines, such as data lines DL and clock lines CL, such as Inter-integrated circuit (Inter-INTEGRATED CIRCUIT, I2C) protocols. It should be noted that the communication CS may also be a non-physical line set, for example, when the control unit 1211 may allow wireless connection with the relay unit 1212, the control unit 1211 and the relay unit 1212 may also be connected by a wireless transmission protocol such as infrared, bluetooth, RFID or zigbee. The method of the present utility model is not limited to the communication connection type or protocol between the control unit 1211 and the relay unit 1212, and the communication connection type or protocol may be adjusted according to the specifications provided by the control unit 1211 and the relay unit 1212, or the actual requirements of the lines and the cost consideration.

Through the communication connection between the communication transmission CS establishment control unit 1211 and the relay unit 1212, the control unit 1211 may instruct the relay unit 1212 to adjust the relay parameters of the corresponding signal transmission pins 111-S. It should be noted that the relay unit 1212 may have a plurality of relay parameters to correspond to the different signal transmission pins 111-S. Taking HDMI as an example, when HDMI has four differential signal transmission pin pairs, the same relay parameter may be set for each differential signal transmission pin pair, or different relay parameters may be set for each differential signal transmission pin pair. The setting of the relay parameters may be adjusted according to the material, length and/or wire diameter of the transmission cable C to which the image transmission connector assembly 10 is to be connected. The objective of adjusting the relay parameter is that after the image transmission connector assembly 10 and the transmission cable C form a transmission line system, signals at two ends of the transmission line system are required to meet the standard specification and the signal eye diagram. However, the specifications of different transmission cables have different requirements for the relay parameters of the transmission line system. For example, a longer length transmission cable requires a higher gain to avoid excessive transmission line system signal loss. However, when the transmission line system with a shorter transmission line uses the same gain as the long transmission line, the signal is excessively amplified and cut off or the eye pattern test cannot meet the standard specification.

It should be noted that, in the present utility model, the means for adjusting the relay parameters of the relay unit 1212 is not limited, and may be controlled according to the specifications and operation instructions of the relay unit 1212. For example, the gain value may be adjusted by adjusting the ratio between passive elements (e.g., capacitance, inductance, or resistance) in the relay unit 1212. Or the relay unit 1212 may perform self-control after the value is written into the register in the relay unit 1212 and the value of the register is extracted by the relay unit 1212.

With the image transmission connector assembly 10 described above, the relay parameters of the relay unit 1212 can be adjusted without changing the hardware architecture of the image transmission connector assembly 10. The image transmission connector assembly 10 can be matched with transmission cables C with different lengths to meet the standard specification.

Second embodiment.

The image transmission connector assembly 10 of the first embodiment may further constitute a second embodiment. Referring to fig. 4, with the assistance of fig. 1-3, fig. 4 illustrates that the image transmission connector assembly 10 may be integrated with a transmission cable C to form a transmission line system 20. Specifically, each set of pads of the second set of pads 123 of the image transmission connector assembly 10 is configured for coupling with a corresponding core of the transmission cable C. The setting of the relay parameters of the image transmission connector assembly 10 may be adjusted according to the material, length and/or wire diameter of the transmission cable C to which the image transmission connector assembly 10 is to be connected. The objective of adjusting the relay parameter is to meet the standard specification and the signal eye diagram of the two signals of the transmission line system 20 after the image transmission connector assembly and the transmission cable C form the transmission line system 20. However, the specifications of different transmission cables C have different requirements for the relay parameters of the transmission line system 20. For example, a longer length of transmission cable requires a higher gain to avoid excessive signal loss from the transmission line system 20. However, a shorter transmission line system 20 using the same gain as a long transmission line will result in excessive signal amplification and cut-off or eye testing that fails to meet the standard specifications.

It should be noted that the image transmission connector assembly 10 may be disposed at one end of the transmission cable C, and the other end may be a universal connector assembly 21. For example, the image transmission connector 11 of the image transmission connector assembly 10 is of HDMI specification, and the other end of the transmission cable C may be a conventional HDMI connector assembly. The end of the transmission line system 20 having the image transmission connector assembly 10 is preferably configured to be coupled to a signal receiving end (e.g., an image output device 22 such as a screen or projector). In particular, the transmission line system 20 may be connected from an end where the universal connector assembly 21 is disposed to a signal output (e.g., signal output device 23 such as a set-top box, television box, etc.) and receive the signal VS. The signal VS is transmitted via the transmission cable C to the end of the transmission line system 20 having the image transmission connector assembly 10. The signal to be transmitted VS is correspondingly relayed by the image transmission connector assembly 10 to become a relayed signal VS ', and the relayed signal VS' is provided to the image output device 22. However, the above configuration is merely illustrative, and the transmission line system 20 may be provided with the image transmission connector assembly 10 at both ends.

The transmission line system 20 having the image transmission connector assembly 10 can be applied to transmission cables C of various materials or lengths (i.e., different electrical characteristics) without changing the hardware architecture of the image transmission connector assembly 10. The hardware design can be simplified, the material reserve requirement can be reduced, and the cost of manufacturing, design or research and development can be saved.

The previous description of the utility model is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other variations or the embodiments may be practiced in combination or separately from one another without departing from the spirit or scope of the disclosure. Thus, the present utility model is not intended to be limited to the examples described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An image transmission connector assembly, comprising:

An image transmission joint, wherein the specification of the image transmission joint is a high-image quality multimedia interface; and

The circuit board is coupled with a pin set of the image transmission joint through a first setting pad set, wherein the regulating module comprises:

A control unit, wherein a burning pin of the control unit is coupled to a pin of the pin set of the image transmission connector; and

A relay unit, wherein the relay unit is configured to be coupled to at least one signal transmission pin of the pin group of the image transmission connector;

The control unit is coupled to the relay unit through a data line and a clock line, and the relay unit receives at least one relay parameter setting from the control unit through a communication transmission to adjust the signal transmitted to the at least one signal transmission pin.

2. The image transmission connector assembly of claim 1, wherein the circuit substrate further comprises:

The second set of at least one signal set pad is coupled to the relay unit and coupled to the at least one signal transmission pin through the relay unit.

3. The image transmission connector assembly of claim 1, wherein the communication transmission is configured to adapt to a communication protocol between integrated circuits.

4. The image transmission connector assembly of claim 1, wherein the pin is coupled to the programming pin when the control unit writes an instruction set; when the control unit completes the programming of the instruction set, the coupling between the pin and the programming pin is interrupted.

5. The image transmission connector assembly of claim 1, wherein the pin coupled to the burn-in pin is a low frequency pin of the pin set.

6. The image transmission connector assembly of claim 1, wherein the control unit stores an instruction set that causes the control unit to:

Establishing a communication connection with the relay unit; and

Providing the at least one relay parameter setting to the relay unit.

7. The image transmission connector assembly of claim 6, wherein providing the relay unit with the at least one relay parameter setting comprises:

A value corresponding to the at least one relay parameter setting is written into a register of the relay unit.

8. The image transmission connector assembly of claim 1, wherein the circuit substrate further comprises:

The power module is coupled to at least one power pin of the pin group and is used for providing power required by the operation of the regulation and control module.

9. The image transmission connector assembly of claim 1, wherein the image transmission connector has an arrangement structure that limits the arrangement directivity.

10. A transmission line system, comprising:

A transmission cable;

The image transmission connector assembly of any one of claims 1-9, disposed on at least one end of the transmission cable.