CN209805981U - Video source equipment and display device based on power line transmission - Google Patents
Video source equipment and display device based on power line transmission Download PDFInfo
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Abstract
The utility model discloses a video source equipment/display equipment based on power line transmission, including the equipment casing and locating video acquisition module/video display module, modem module and power module in the equipment casing, wherein, the power module is used for connecting the power line to obtain the power and supply power for the video acquisition module/video display module and modem module; the video acquisition module/video display module is used for acquiring video signals and providing the video signals for the modem module/displaying the video signals provided by the modem module; the modem module is used for modulating the video signal into a power line signal or demodulating the power line signal into the video signal. The video source device/display device can realize power supply and modulation and demodulation signals only by one power plug.
Description
Technical Field
The utility model relates to a power line transmission technology especially relates to a video source equipment's display device based on power line transmission.
background
with the development of power line transmission technology, the application of transmitting video signals by using the power line carrier technology is more and more extensive. In the prior art, when a video signal is transmitted between a video source device and a display device through a power line, a modem is required to modulate the video signal in the power line or demodulate the video signal from the power line. The modem needs to be connected with the power line through the power module to build a signal transmission system, the modem is connected with the video source device and the display device through the Ethernet, meanwhile, the video source device and the display device need to be independently connected with the power line to obtain power supply, the number of devices is large, wiring is complex, management is difficult, and a large number of socket holes are occupied.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the utility model provides a video source equipment and display device based on power line transmission only needs a power plug just can realize power supply and modem signal.
The utility model discloses the technical problem that will solve realizes through following technical scheme:
A video source device based on power line transmission comprises a device shell, a video acquisition module, a modem module and a power supply module which are arranged in the device shell, wherein,
The power supply module is used for being connected with a power line to obtain electric power to supply power for the video acquisition module and the modem module;
the video acquisition module is used for acquiring video signals and providing the video signals to the modem module;
and the modem module is used for modulating the video signal into a power line signal.
further, the power supply module comprises a built-in socket having a first jack and a second jack, the video capture module is connected to the first jack of the built-in socket through a first power line thereof, and the modem module is connected to the second jack of the built-in socket through a second power line thereof.
further, the power supply module includes a transmission circuit and a conversion circuit, wherein,
the transmission circuit is used for transmitting the acquired alternating current to the modem module to supply power to the modem module and is electrically connected to the modem module;
The conversion circuit is used for converting the obtained alternating current into direct current so as to supply power to the video acquisition module and is electrically connected to the video acquisition module.
further, the modulation and demodulation module comprises a modulation and demodulation circuit and a PSE power supply circuit, wherein,
The modulation and demodulation circuit is used for modulating the video signal into a power line signal;
the PSE power supply circuit is used for supplying power to the video acquisition module;
in addition, the video acquisition module comprises a signal processing circuit and a PD powered circuit, wherein,
the signal processing circuit is used for processing video signals;
The PD powered circuit is used for acquiring power from the modulation and demodulation module;
The modulation and demodulation circuit and the PSE power supply circuit share a first network cable interface, the signal processing circuit and the PD power receiving circuit share a second network cable interface, and the first network cable interface and the second network cable interface are connected through a network twisted pair.
further, the modem module further comprises a low power consumption detection circuit and a control switch,
the low-power detection circuit is used for sending a PD detection signal to the video acquisition module when the first network cable interface is connected;
the control switch is used for respectively connecting or disconnecting the first network cable interface with the PSE power supply circuit and the low-power detection circuit under the control of the low-power detection circuit, and respectively connected between the first network cable interface and the PSE power supply circuit and the low-power detection circuit.
a display device based on power line transmission comprises a device shell, and a video display module, a modem module and a power supply module which are arranged in the device shell, wherein,
the power supply module is used for being connected with a power line to obtain electric power to supply power for the video display module and the modem module;
The video display module is used for displaying the video signal provided by the modem module;
And the modem module is used for demodulating the power line signal into a video signal.
Further, the power supply module includes a built-in socket having a first jack and a second jack, the video display module is connected to the first jack of the built-in socket through a first power line thereof, and the modem module is connected to the second jack of the built-in socket through a second power line thereof.
further, the power supply module includes a transmission circuit and a conversion circuit, wherein,
the transmission circuit is used for transmitting the acquired alternating current to the modem module to supply power to the modem module and is electrically connected to the modem module;
the conversion circuit is used for converting the obtained alternating current into direct current so as to supply power to the video display module and is electrically connected with the video display module.
further, the modulation and demodulation module comprises a modulation and demodulation circuit and a PSE power supply circuit, wherein,
the modulation and demodulation circuit is used for demodulating the power line signal into a video signal;
the PSE power supply circuit is used for supplying power to the video display module;
In addition, the video display module comprises a signal processing circuit and a PD powered circuit, wherein,
the signal processing circuit is used for processing video signals;
The PD powered circuit is used for acquiring power from the modulation and demodulation module;
the modulation and demodulation circuit and the PSE power supply circuit share a first network cable interface, the signal processing circuit and the PD power receiving circuit share a second network cable interface, and the first network cable interface and the second network cable interface are connected through a network twisted pair to simultaneously transmit video signals and electric power.
further, the modem module further comprises a low power consumption detection circuit and a control switch,
The low-power detection circuit is used for sending a PD detection signal to the video display module when the first network cable interface is connected;
the control switch is used for respectively connecting or disconnecting the first network cable interface with the PSE power supply circuit and the low-power detection circuit under the control of the low-power detection circuit, and respectively connected between the first network cable interface and the PSE power supply circuit and the low-power detection circuit.
The utility model discloses following beneficial effect has: the video source device/display device is characterized in that the video acquisition module/video display module and the modem module are assembled in the same device shell, then the same power supply module is connected into a power line, the power supply of the video acquisition module/video display module and the modulation and demodulation signals of the modem module can be realized only by one power plug, the wiring is simple, the management is easy, and fewer sockets are occupied.
drawings
fig. 1 is a schematic frame diagram of a video source device provided by the present invention;
Fig. 2 is a schematic frame diagram of another video source apparatus provided by the present invention;
Fig. 3 is a schematic frame diagram of a right video source device provided by the present invention;
Fig. 4 is a schematic frame diagram of a display device provided by the present invention;
fig. 5 is a schematic frame diagram of another display device provided by the present invention;
fig. 6 is a schematic frame diagram of another display device provided by the present invention.
Detailed Description
the present invention will be described in detail with reference to the accompanying drawings and examples.
Example one
as shown in fig. 1-3, a video source device based on power line transmission comprises a device housing, and a video capture module, a modem module and a power supply module disposed in the device housing, wherein,
The power supply module is used for being connected with a power line to obtain electric power to supply power for the video acquisition module and the modem module;
the video acquisition module is used for acquiring video signals and providing the video signals to the modem module;
and the modem module is used for modulating the video signal into a power line signal.
The video source equipment is characterized in that the video acquisition module and the modem module are assembled in the same equipment shell, then the power line is accessed through the same power supply module, the power supply of the video acquisition module and the modulation and demodulation signals of the modem module can be realized only by one power plug, the wiring is simple, the management is easy, and fewer sockets are occupied.
The video capture module may be, but is not limited to, one of a camera module, a video server module, or a PC host module.
the power supply module extends out of the equipment shell through a third power line of the power supply module so as to be connected with a power line; the video acquisition module and the modem module are connected by a network twisted pair through respective network cable interfaces to transmit video signals.
in one embodiment, as shown in fig. 1, the power module includes a built-in socket having a first jack and a second jack, the video capture module is connected to the first jack of the built-in socket through a first power line thereof, and the modem module is connected to the second jack of the built-in socket through a second power line thereof.
preferably, the built-in socket is fixed to an inner wall of the device housing.
in this embodiment, the power supply module only serves to connect the video capture module and the modem module in parallel to supply power, and basic power supply processing such as ac to dc conversion and voltage transformation is performed by the built-in circuits of the video capture module and the modem module.
in another embodiment, as shown in fig. 2, the power module includes a transmission circuit and a conversion circuit, wherein,
The transmission circuit is used for transmitting the acquired alternating current to the modem module to supply power to the modem module and is electrically connected to the modem module;
the conversion circuit is used for converting the obtained alternating current into direct current so as to supply power to the video acquisition module and is electrically connected to the video acquisition module.
in yet another embodiment, as shown in fig. 3, the modem module comprises a modem circuit and a PSE power supply circuit, wherein,
The modulation and demodulation circuit is used for modulating the video signal into a power line signal;
the PSE power supply circuit is used for supplying power to the video acquisition module;
In addition, the video acquisition module comprises a signal processing circuit and a PD powered circuit, wherein,
The signal processing circuit is used for processing video signals;
The PD powered circuit is used for acquiring power from the modulation and demodulation module;
The modulation and demodulation circuit and the PSE power supply circuit share a first network cable interface, the signal processing circuit and the PD power receiving circuit share a second network cable interface, and the first network cable interface and the second network cable interface are connected through a network twisted pair to simultaneously transmit video signals and electric power.
In this embodiment, the video acquisition module does not directly obtain power supply from the power supply module, but obtains power through a PSE power supply circuit built in the modem module, and the video acquisition module and the modem module share a network cable interface based on a POE technology, so that video signals and power can be simultaneously transmitted through a network twisted pair.
When the power supply circuit of the PSE works, the PSE power supply circuit sends a PD detection signal to the video acquisition module through the first network cable interface, the PD power receiving circuit sends a PD feedback signal to the PSE power supply circuit after receiving the PD detection signal, the PSE power supply circuit starts to supply power to the PD power receiving circuit if receiving the PD feedback signal, and the PD detection signal is sent to the video acquisition module all the time if not receiving any PD feedback signal.
Considering that the first network cable interface is always kept at the standard voltage (48V) when the PSE power supply circuit sends a PD detection signal, the power consumption is large, preferably, the modem module further includes a low power consumption detection circuit and a control switch,
The low-power detection circuit is used for sending a PD detection signal to the video acquisition module when the first network cable interface is connected;
The control switch is used for respectively connecting or disconnecting the first network cable interface with the PSE power supply circuit and the low-power detection circuit under the control of the low-power detection circuit, and respectively connected between the first network cable interface and the PSE power supply circuit and the low-power detection circuit.
the low-power consumption detection circuit sends a PD detection signal to the video acquisition module through the first network cable interface in the state of switching on the first network cable interface, the PD powered circuit sends a PD feedback signal to the low power consumption detection circuit after receiving the PD detection signal, and if the low power consumption detection circuit receives the PD feedback signal, controlling the control switch to make a connection between the PSE power supply circuit and the first cable interface and to break a connection between the low power detection circuit and the first cable interface to supply power to the PD powered circuit, and if no PD feedback signal is received, controlling the control switch to disconnect the connection between the PSE power supply circuit and the first network cable interface, maintaining the connection between the low-power detection circuit and the first network cable interface, and sending the PD detection signal to the video acquisition module all the time.
the working voltage of the low power consumption detection circuit is low voltage (such as 5V), and the power module also supplies power, that is, the power module supplies 48V voltage to the PSE power supply circuit and 5V voltage to the low power consumption detection circuit as required. When the low-power consumption detection circuit sends the PD detection signal, the first network cable interface is kept at low voltage (5V), so that the power consumption can be reduced, and the aim of saving energy is fulfilled.
Of course, the power module can also be integrated in the modem module, thereby improving the circuit integration level.
example two
As shown in fig. 3 to 6, a display device based on power line transmission includes a device housing, and a video display module, a modem module and a power supply module provided in the device housing, wherein,
the power supply module is used for being connected with a power line to obtain electric power to supply power for the video display module and the modem module;
the video display module is used for displaying the video signal provided by the modem module;
and the modem module is used for demodulating the power line signal into a video signal.
the display equipment is characterized in that the video display module and the modem module are assembled in the same equipment shell, then the power line is accessed through the same power supply module, the power supply of the video display module and the modulation and demodulation signals of the modem module can be realized only by one power plug, the wiring is simple, the management is easy, and fewer sockets are occupied.
the video display module may be, but is not limited to, one of a display module, a television module, or a projector module.
the power supply module extends out of the equipment shell through a third power line of the power supply module so as to be connected with a power line; the video display module and the modem module transmit video signals through respective network cable interfaces in a network twisted pair connection.
In one embodiment, as shown in fig. 3, the power supply module includes a built-in socket having a first jack and a second jack, the video display module is connected to the first jack of the built-in socket through a first power line thereof, and the modem module is connected to the second jack of the built-in socket through a second power line thereof.
preferably, the built-in socket is fixed to an inner wall of the device housing.
In this embodiment, the power supply module only serves to connect the video display module and the modem module in parallel to supply power, and basic power supply processing such as ac to dc conversion and voltage transformation is performed by the built-in circuits of the video display module and the modem module.
in another embodiment, as shown in fig. 4, the power module includes a transmission circuit and a conversion circuit, wherein,
the transmission circuit is used for transmitting the acquired alternating current to the modem module to supply power to the modem module and is electrically connected to the modem module;
the conversion circuit is used for converting the obtained alternating current into direct current so as to supply power to the video display module and is electrically connected with the video display module.
in yet another embodiment, as shown in fig. 5, the modem module comprises a modem circuit and a PSE power supply circuit, wherein,
The modulation and demodulation circuit is used for demodulating the power line signal into a video signal;
the PSE power supply circuit is used for supplying power to the video display module;
In addition, the video display module comprises a signal processing circuit and a PD powered circuit, wherein,
The signal processing circuit is used for processing video signals;
the PD powered circuit is used for acquiring power from the modulation and demodulation module;
The modulation and demodulation circuit and the PSE power supply circuit share a first network cable interface, the signal processing circuit and the PD power receiving circuit share a second network cable interface, and the first network cable interface and the second network cable interface are connected through a network twisted pair to simultaneously transmit video signals and electric power.
in this embodiment, the video display module does not directly obtain power supply from the power supply module, but obtains power through a PSE power supply circuit built in the modem module, and the video display module and the modem module share a network cable interface based on a POE technology, so that video signals and power can be simultaneously transmitted through a network twisted pair.
when the power supply circuit of the PSE works, the PSE power supply circuit sends a PD detection signal to the video display module through the first network cable interface, the PD power receiving circuit sends a PD feedback signal to the PSE power supply circuit after receiving the PD detection signal, the PSE power supply circuit starts to supply power to the PD power receiving circuit if receiving the PD feedback signal, and the PD detection signal is sent to the video display module all the time if not receiving any PD feedback signal.
Considering that the first network cable interface is always kept at the standard voltage (48V) when the PSE power supply circuit sends a PD detection signal, the power consumption is large, preferably, the modem module further includes a low power consumption detection circuit and a control switch,
The low-power detection circuit is used for sending a PD detection signal to the video display module when the first network cable interface is connected;
the control switch is used for respectively connecting or disconnecting the first network cable interface with the PSE power supply circuit and the low-power detection circuit under the control of the low-power detection circuit, and respectively connected between the first network cable interface and the PSE power supply circuit and the low-power detection circuit.
The low-power consumption detection circuit sends a PD detection signal to the video display module through the first network cable interface in the state of switching on the first network cable interface, the PD powered circuit sends a PD feedback signal to the low power consumption detection circuit after receiving the PD detection signal, and if the low power consumption detection circuit receives the PD feedback signal, controlling the control switch to make a connection between the PSE power supply circuit and the first cable interface and to break a connection between the low power detection circuit and the first cable interface to supply power to the PD powered circuit, and if no PD feedback signal is received, the control switch is controlled to disconnect the connection between the PSE power supply circuit and the first network cable interface and maintain the connection between the low power consumption detection circuit and the first network cable interface, and the PD detection signal is always sent to the video display module.
the working voltage of the low power consumption detection circuit is low voltage (such as 5V), and the power module also supplies power, that is, the power module supplies 48V voltage to the PSE power supply circuit and 5V voltage to the low power consumption detection circuit as required. When the low-power consumption detection circuit sends the PD detection signal, the first network cable interface is kept at low voltage (5V), so that the power consumption can be reduced, and the aim of saving energy is fulfilled.
of course, the power module can also be integrated in the modem module, thereby improving the circuit integration level.
the above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is specific and detailed, but the invention can not be understood as the limitation of the patent scope of the present invention, but all the technical solutions obtained by adopting the equivalent substitution or equivalent transformation should fall within the protection scope of the present invention.
Claims (10)
1. A video source device based on power line transmission is characterized by comprising a device shell, a video acquisition module, a modem module and a power supply module, wherein the video acquisition module, the modem module and the power supply module are arranged in the device shell,
The power supply module is used for being connected with a power line to obtain electric power to supply power for the video acquisition module and the modem module;
The video acquisition module is used for acquiring video signals and providing the video signals to the modem module;
and the modem module is used for modulating the video signal into a power line signal.
2. The video source device based on powerline transmission of claim 1, wherein the power module comprises a built-in socket having a first jack and a second jack, the video capture module being connected to the first jack of the built-in socket via a first power line thereof, and the modem module being connected to the second jack of the built-in socket via a second power line thereof.
3. The video source device based on power line transmission of claim 1, wherein the power supply module comprises a transmission circuit and a conversion circuit, wherein,
the transmission circuit is used for transmitting the acquired alternating current to the modem module to supply power to the modem module and is electrically connected to the modem module;
the conversion circuit is used for converting the obtained alternating current into direct current so as to supply power to the video acquisition module and is electrically connected to the video acquisition module.
4. The video source device based on power line transmission of claim 1, wherein the modem module comprises a modem circuit and a PSE power supply circuit, wherein,
The modulation and demodulation circuit is used for modulating the video signal into a power line signal;
The PSE power supply circuit is used for supplying power to the video acquisition module;
In addition, the video acquisition module comprises a signal processing circuit and a PD powered circuit, wherein,
the signal processing circuit is used for processing video signals;
the PD powered circuit is used for acquiring power from the modulation and demodulation module;
the modulation and demodulation circuit and the PSE power supply circuit share a first network cable interface, the signal processing circuit and the PD power receiving circuit share a second network cable interface, and the first network cable interface and the second network cable interface are connected through a network twisted pair.
5. the video source device based on power line transmission according to claim 4, wherein said modem module further comprises a low power consumption detection circuit and a control switch,
The low-power detection circuit is used for sending a PD detection signal to the video acquisition module when the first network cable interface is connected;
the control switch is used for respectively connecting or disconnecting the first network cable interface with the PSE power supply circuit and the low-power detection circuit under the control of the low-power detection circuit, and respectively connected between the first network cable interface and the PSE power supply circuit and the low-power detection circuit.
6. A display device based on power line transmission is characterized by comprising a device shell, and a video display module, a modem module and a power supply module which are arranged in the device shell, wherein,
The power supply module is used for being connected with a power line to obtain electric power to supply power for the video display module and the modem module;
The video display module is used for displaying the video signal provided by the modem module;
And the modem module is used for demodulating the power line signal into a video signal.
7. the power-line-transmission-based display device according to claim 6, wherein the power supply module includes a built-in socket having a first jack and a second jack, the video display module is connected to the first jack of the built-in socket through a first power line thereof, and the modem module is connected to the second jack of the built-in socket through a second power line thereof.
8. The power-line transmission-based display device according to claim 6, wherein the power supply module includes a transmission circuit and a conversion circuit, wherein,
the transmission circuit is used for transmitting the acquired alternating current to the modem module to supply power to the modem module and is electrically connected to the modem module;
the conversion circuit is used for converting the obtained alternating current into direct current so as to supply power to the video display module and is electrically connected with the video display module.
9. the power line transmission-based display device of claim 6, wherein the modem module comprises a modem circuit and a PSE power supply circuit, wherein,
The modulation and demodulation circuit is used for demodulating the power line signal into a video signal;
The PSE power supply circuit is used for supplying power to the video display module;
in addition, the video display module comprises a signal processing circuit and a PD powered circuit, wherein,
The signal processing circuit is used for processing video signals;
the PD powered circuit is used for acquiring power from the modulation and demodulation module;
The modulation and demodulation circuit and the PSE power supply circuit share a first network cable interface, the signal processing circuit and the PD power receiving circuit share a second network cable interface, and the first network cable interface and the second network cable interface are connected through a network twisted pair to simultaneously transmit video signals and electric power.
10. the power line transmission-based display device according to claim 9, wherein the modem module further comprises a low power consumption detection circuit and a control switch,
the low-power detection circuit is used for sending a PD detection signal to the video display module when the first network cable interface is connected;
the control switch is used for respectively connecting or disconnecting the first network cable interface with the PSE power supply circuit and the low-power detection circuit under the control of the low-power detection circuit, and respectively connected between the first network cable interface and the PSE power supply circuit and the low-power detection circuit.
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| CN111610400A (en) * | 2020-06-02 | 2020-09-01 | 苏州乐轩科技有限公司 | Detection system and detection method |
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