CN218783841U - Signal processing device for multimedia terminal - Google Patents
Signal processing device for multimedia terminal Download PDFInfo
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- CN218783841U CN218783841U CN202222710022.XU CN202222710022U CN218783841U CN 218783841 U CN218783841 U CN 218783841U CN 202222710022 U CN202222710022 U CN 202222710022U CN 218783841 U CN218783841 U CN 218783841U
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- 230000008054 signal transmission Effects 0.000 description 3
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Abstract
The utility model discloses a signal processing device for a multimedia terminal, which comprises a main board card, a plurality of signal acquisition cards, a FPGA signal processing board card, a plurality of digital modulation board cards and a mixed amplification board, wherein the plurality of signal acquisition cards, the FPGA signal processing board card, the plurality of digital modulation board cards and the mixed amplification board are assembled on the main board card; each multi-path signal acquisition card is bidirectionally connected with a communication serial port on the mainboard card, and a TS flow bus interface at the output end of each signal acquisition card is connected with a TS flow bus interface at the input end of a corresponding FPGA signal processing board card through the mainboard card; the network interface of the FPGA signal processing board card is in bidirectional connection with the network interface of the multimedia processing server; and the output end TS flow bus interface of the FPGA signal processing board card is connected with the TS flow bus interfaces of the input ends of the corresponding digital modulation board cards through the main board card. According to the signal processing device, the circuit boards connect signals together through the main board card, the number of electronic equipment is reduced, and wiring among the electronic equipment in the signal processing device is greatly simplified.
Description
Technical Field
The utility model relates to a technical field of signal processing apparatus especially relates to a signal processing apparatus for multimedia terminal.
Background
In a multimedia terminal such as a digital television, a signal processing device is generally used, and the signal processing device processes an electrical signal through an electronic device such as a processing chip and a processing circuit, however, the number of electronic devices in the conventional signal processing device is large, and the wiring between the electronic devices is complicated, which causes many problems such as required material for the device, high production cost, and difficulty in debugging the device. Thus, the signal processing apparatus in the prior art method has a problem that the wiring of the apparatus is complicated.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a signal processing device for multimedia terminal aims at solving the complicated problem of equipment wiring that signal processing device exists among the prior art method.
The embodiment of the utility model provides a signal processing device for multimedia terminal, wherein, signal processing device includes main board card and assembles signal acquisition card, FPGA signal processing integrated circuit board, digital modulation integrated circuit board and the mixed amplification board on the main board card;
each signal acquisition card is bidirectionally connected with a communication serial port on a mainboard card, and a TS (transport stream) bus interface at the output end of each signal acquisition card is connected with a TS bus interface at the input end of a corresponding FPGA (field programmable gate array) signal processing board card through the mainboard card; the network interface of the FPGA signal processing board card is in bidirectional connection with the network interface of the multimedia processing server;
the output TS flow bus interface of the FPGA signal processing board card is connected with the TS flow bus interface of the input end of the corresponding digital modulation board cards through the main board card, the output radio frequency interface of the digital modulation board cards is in signal connection with the radio frequency interface of the input end of the hybrid amplification board, and the output radio frequency interface of the hybrid amplification board is a digital television signal mixed with multiple paths of digital modulation board cards.
The signal processing device for the multimedia terminal is characterized in that the signal acquisition card, the FPGA signal processing board card, the digital modulation board card and the hybrid amplification board are assembled on the main board card in a pluggable manner.
The signal processing device for the multimedia terminal is characterized in that the main board card is also provided with a serial port selector switch, and the serial port selector switch is connected in series between each communication serial port and the main board card; and the communication between each communication serial port and the main board card is switched and controlled through the serial port selector switch.
The signal processing device for the multimedia terminal is characterized in that the mixed amplification board comprises a radio frequency mixed circuit, an output signal level control circuit and a signal amplifier circuit;
the input end of the radio frequency hybrid circuit is connected with the output end of each digital modulation board card, the input end of the output signal level control circuit is connected with the output end of the radio frequency hybrid circuit, and the input end of the signal amplifier circuit is connected with the output end of the output signal level control circuit.
The signal processing device for the multimedia terminal is characterized in that the main board card is also provided with a communication network interface respectively connected with each FPGA signal processing board card.
The signal acquisition card is a cable television signal acquisition card, a satellite television signal acquisition card, a ground digital television signal acquisition card, an ASI signal acquisition card, an HDMI high-definition signal acquisition card or an SDI signal acquisition card.
The embodiment of the utility model provides a signal processing device for multimedia terminal, including the mainboard card and assemble a plurality of signal collection cards, FPGA signal processing integrated circuit board, a plurality of digital modulation integrated circuit boards and mix the amplifier board on the mainboard card; each multi-path signal acquisition card is bidirectionally connected with a communication serial port on the mainboard card, and a TS flow bus interface at the output end of each signal acquisition card is connected with a TS flow bus interface at the input end of a corresponding FPGA signal processing board card through the mainboard card; the network interface of the FPGA signal processing board card is bidirectionally connected with the network interface of the multimedia processing server, can encapsulate and process the multi-path input TS stream signal of the FPGA into an IPTV signal and output the IPTV signal to the multimedia processing server, and can also analyze and convert the IPTV signal of the FPGA network interface into a TS bus signal and output the TS bus signal to a plurality of digital modulation board cards; the output end TS flow bus interface of the FPGA signal processing board card is connected with the TS flow bus interfaces of the input ends of the corresponding digital modulation board cards through the main board card; the radio frequency interface signals at the output ends of the plurality of digital modulation board cards are connected with the radio frequency interface at the input end of the hybrid amplification board; the radio frequency interface at the output end of the mixed amplification board is a digital television signal mixed with a plurality of paths of digital modulation board cards and can be transmitted in a coaxial digital television system. According to the signal processing device, the plurality of signal acquisition cards, the FPGA signal processing board card, the multimedia processing server, the plurality of digital modulation board cards and the hybrid amplification board connect signals together through the main board card, the number of electronic equipment is reduced, and wiring among the electronic equipment in the signal processing device is greatly simplified.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.
Fig. 1 is a schematic diagram of a connection structure of a signal processing apparatus for a multimedia terminal according to an embodiment of the present invention;
fig. 2 is a circuit structure diagram of a signal processing apparatus for a multimedia terminal according to an embodiment of the present invention;
fig. 3 is a schematic signal transmission diagram of a signal processing apparatus for a multimedia terminal according to an embodiment of the present invention;
fig. 4 is another signal transmission diagram of a signal processing apparatus for a multimedia terminal according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in the specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
In an embodiment of the present application, please refer to fig. 1 and fig. 2, as shown in the drawings, an embodiment of the present invention provides a signal processing apparatus for a multimedia terminal, the signal processing apparatus includes a main board card, and a signal acquisition card 1, an FPGA signal processing board card 30, a digital modulation board card 4 and a hybrid amplification board 5 mounted on the main board card; each signal acquisition card 1 is bidirectionally connected with a communication serial port 20 on a mainboard card, and a TS flow bus interface at the output end of each signal acquisition card 1 is connected with a TS flow bus interface at the input end of a corresponding FPGA signal processing board card 30 through the mainboard card; the network interface of the FPGA signal processing board 30 is bidirectionally connected to the network interface of the multimedia processing server 10; the output end TS flow bus interface of the FPGA signal processing board card 30 is connected with the corresponding TS flow bus interfaces at the input ends of the digital modulation board cards 4 through the main board card, the output end radio frequency interface signals of the digital modulation board cards 4 are connected with the radio frequency interface at the input end of the hybrid amplification board 5, and the output end radio frequency interface of the hybrid amplification board 5 is a digital television signal mixed with multiple paths of digital modulation board cards. The hybrid amplification block 5 may be transmitted in a coaxial digital television system.
Specifically, the network interface of the FPGA signal processing board 30 is bidirectionally connected to the communication end of the multimedia processing server 10; the output end TS flow bus interface of the FPGA signal processing board card 30 is connected with the input ends of the corresponding digital modulation board cards 4, the output ends of the digital modulation board cards 4 are connected with the input end of the hybrid amplification board 5, and the output end of the hybrid amplification board 5 is used for outputting signals. The number of the signal acquisition card 1, the number of the FPGA signal processing board card 30 and the number of the digital modulation board cards 4 can be flexibly adjusted, and the electronic equipment with the optimal number is selected according to the use requirement and assembled on the mainboard card for use.
The FPGA signal processing board 30 may encapsulate and process multiple input TS stream signals of the FPGA into IPTV signals and output the IPTV signals to the multimedia processing server, or analyze and convert the IPTV signals of the FPGA network interface into TS bus signals and output the TS bus signals to the plurality of digital modulation boards.
Specifically, the connection between the signal acquisition card 1, the FPGA signal processing board 30, the digital modulation board 4 and the hybrid amplification board 5 can be realized by a microstrip line arranged on the PCB. The signal acquisition card 1 can be configured according to the type of the input signal, that is, different types of acquisition cards can be selected for use according to different requirements. The output signals of the signal acquisition card 1 are all unified and standardized as TS stream signals, and then the signal acquisition card 1 processes various input signals of different types and outputs the processed input signals as TS stream signals to the FPGA signal processing board card 30. The signal acquisition card 1 is mainly used for receiving multimedia signals of different types, uniformly converting the multimedia signals into TS (transport stream) signals and then transmitting the TS signals to the FPGA signal processing board card 30 for uniform processing. The FPGA signal processing board 30 is a board for processing an FPGA signal. The FPGA (Field Programmable Gate Array) signal processing board is configured to Process an input TS stream signal, analyze, PID (Process Identification), filter, multiplex, remultiplexe, and format-convert the signal in the TS stream according to actual needs, and then output the TS stream interface signal that can be recognized by the multi-path digital modulation board 4 to the specified digital modulation board 4.
The FPGA signal processing board 30 can be used as an IPTV signal input device, and can also be used as an IPTV signal output device. As shown in fig. 3, when the IPTV signal input function of the FPGA signal processing board 30 is used, the multimedia processing server 10 sends an IPTV signal, the IPTV signal is transmitted to the motherboard through the network interface between the multimedia processing server board and the FPGA signal processing board 30, the IPTV signal is further transmitted to the FPGA signal processing board 30 through the network interface on the motherboard, the FPGA signal processing board 30 can analyze IPTV program signals of various protocols input through the network interface, after the FPGA signal processing board 30 obtains analysis signals corresponding to IPTV program signals of different protocols, a required analysis signal can be selected for use according to a use requirement, so as to obtain a TS stream signal corresponding to the signal to be used, the TS stream signal can be output to a plurality of digital modulation boards 4 connected to the motherboard through the motherboard, the digital modulation boards 4 modulate the TS stream signal to obtain an RF signal, and output the RF signal to a hybrid amplification board through the motherboard, and the hybrid amplification board amplifies the signal to output a digital television signal.
When the IPTV signal output function of the FPGA signal processing board 30 is used, the FPGA signal processing board 30 receives a TS stream interface signal from the signal acquisition card 1 through an interface, after receiving the interface signal, the FPGA signal processing board 30 can package and pack the TS stream interface signal into a required IPTV network protocol signal through software, and then output the IPTV network protocol signal to the multimedia processing server 10 through a network interface, so that the multimedia processing server 10 can receive the IPTV network protocol signal and send the IPTV network protocol signal to the IPTV system.
The FPGA signal processing board 30 receives the IPTV signal through the network interface, analyzes a program of the IPTV signal according to actual needs, performs PID filtering, multiplexing, remultiplexing, and format conversion, then converts the program into a TS stream interface signal that can be recognized by the multi-channel digital modulation board 4, and outputs the TS stream interface signal to the specified digital modulation board 4.
The digital modulation board card 4 has the main functions of digitally modulating the input TS stream signal, and the digital modulation system and standard include: DTMB modulation, ATSC modulation, ISDB-T modulation, DVBT2, DVBC J.83A modulation and DVBC J.83B modulation, which are all collectively called digital modulation. After receiving the TS stream signal input by the FPGA signal processing board 30, the digital modulation board 4 performs FIFO buffering, baseband processing, DAC conversion to IQ or IF signal, and then converts to the required frequency to become RF radio frequency signal with digital modulation and outputs to the hybrid amplification board 5.
The mixing and amplifying board 5 mixes the RF radio frequency signals input by the multi-path digital modulation board 4, and then performs signal amplification processing and outputs the signals.
For example, in the practical application process, one satellite television signal acquisition card supports 3-channel signal input and 3-channel TS stream output, and if three satellite television signal acquisition cards are inserted into a main board card, the combined product supports 9-channel satellite television signal input and 9-channel TS stream output. Such as: one digital modulation board card 4 supports 4 paths of TS stream signal input, and one path of RF signal output with 4 frequency points, so if two digital modulation board cards 4 are inserted on the main board card, the combined product supports 8 paths of TS stream input and the RF signal output function with 8 frequency points. By analogy, a signal transmission path with optimal price ratio can be constructed according to the actual requirements of customers.
In a more specific embodiment, the signal acquisition card 1, the FPGA signal processing board 30, the digital modulation board 4, and the hybrid amplification board 5 are all assembled on the main board in a pluggable manner.
Can set up signal acquisition card 1 on the mainboard card FPGA signal processing integrated circuit board 30 digital modulation integrated circuit board 4 reaches mix and amplify board 5 and be the design of pegging graft, then signal acquisition card 1 FPGA signal processing integrated circuit board 30 digital modulation integrated circuit board 4 reaches mix and amplify board 5 and can conveniently peg graft and install on the mainboard card, improve the efficiency of electronic equipment's loading and dismantlement on the mainboard card.
In a more specific embodiment, the main board card is further provided with a serial port switch 6, and the serial port switch 6 is connected in series between each communication serial port 20 and the main board card; the communication between each communication serial port 20 and the main board card is switched and controlled by the serial port switch 6.
Can be provided with serial ports change over switch 6 on the mainboard integrated circuit board, serial ports change over switch 6 establishes ties and sets up between communication serial ports 20 and mainboard card, and the mainboard card can send switching instruction to serial ports change over switch 6 to switch one of them or a plurality of communication serial ports 20 through serial ports change over switch 6 and carry out signal output.
As shown in fig. 4, the multimedia processing server 10 sends a network signal, the network signal can be directly transmitted to the CPU of the main board card through the network interface of the main board card, or the network signal can be further transmitted to the CPU of the main board card after being transmitted to the network interface of the main board card through the multimedia processing server board card; the CPU is connected to the serial port changeover switch 6 via a serial interface. The serial port changeover switch can be connected with the signal acquisition card 1 in a switching way, the FPGA signal processing board card 30 in a switching way, the digital modulation board card 4 or the hybrid amplification board 5 in a switching way, so that network signals from a CPU are transmitted to the signal acquisition card 1, the FPGA signal processing board card 30, the digital modulation board card 4 or the hybrid amplification board 5. Meanwhile, the FPGA signal processing board 30, the digital modulation board 4, or the hybrid amplification board 5 may also output a network signal to the serial port switch, and further output the network signal to the CPU, and the CPU directly outputs the network signal (such as a WEB page) to the multimedia processing server 10, or outputs the network signal to the multimedia processing server 10 through the multimedia processing server board.
In a more specific embodiment, the hybrid amplification board 5 includes a radio frequency hybrid circuit 51, an output signal level control circuit 52, and a signal amplifier circuit 53; the input end of the radio frequency hybrid circuit 51 is connected to the output end of each digital modulation board card 4, the input end of the output signal level control circuit 52 is connected to the output end of the radio frequency hybrid circuit 51, and the input end of the signal amplifier circuit 53 is connected to the output end of the output signal level control circuit 52.
The hybrid amplifier board 5 includes a radio frequency hybrid circuit 51, an output signal level control circuit 52, and a signal amplifier circuit 53, in which the video hybrid circuit 51 is used for radio frequency mixing of digital modulation signals, the output signal level control circuit 52 is used for level control of output signals, and the signal amplifier circuit 53 is used for amplification processing of output signals.
In a more specific embodiment, the main board card is further provided with a network interface respectively connected to each FPGA signal processing board card 30. As in the embodiment of the present application, the FPGA signal processing board 30 has a JTAG circuit, a configuration circuit, and a DDR (Double Data Rate) circuit.
In a more specific embodiment, the signal acquisition card 1 is a cable television signal acquisition card, a satellite television signal acquisition card, a terrestrial digital television signal acquisition card, an ASI signal acquisition card, an HDMI high-definition signal acquisition card, or an SDI signal acquisition card.
In the embodiment of the present application, the signal acquisition card 1 may be a cable television signal acquisition card, a satellite television signal acquisition card, a terrestrial digital television signal acquisition card, an ASI signal acquisition card, an HDMI high definition signal acquisition card, or an SDI signal acquisition card. For example, if the input signal comprises a satellite television signal, selecting an acquisition card supporting satellite television signal reception to be plugged into the main board card for use, wherein the signal acquisition card is a satellite television signal acquisition card; if the input signal comprises a cable television signal, selecting an acquisition card supporting cable television signal reception to be plugged on a main board card for use, wherein the signal acquisition card is a cable television signal acquisition card; if the input signal comprises a ground digital television signal, selecting an acquisition card supporting ground digital television signal reception to be plugged into the main board card for use, wherein the signal acquisition card is a ground digital television signal acquisition card; if the input signal comprises an HDMI high-definition signal, selecting an acquisition card supporting HDMI high-definition signal reception to be plugged on a main board card for use, wherein the signal acquisition card is an HDMI high-definition signal acquisition card; if the input signal comprises other types of multimedia signals, the acquisition card supporting other multimedia signal receiving is selected to be plugged into the main board card for use. The main board card can simultaneously support mixed insertion of a plurality of different types of signal acquisition cards, and the assembly quantity of each type of signal acquisition card can be adjusted according to the specific condition of received signals, for example, a plurality of same type signal acquisition cards are inserted for adjustment.
The embodiment of the utility model provides a signal processing device for multimedia terminal, including the mainboard card and assemble a plurality of signal acquisition cards, FPGA signal processing integrated circuit board, a plurality of digital modulation integrated circuit boards and mix the amplifier board on the mainboard card; each multi-path signal acquisition card is bidirectionally connected with a communication serial port on the mainboard card, and a TS flow bus interface at the output end of each signal acquisition card is connected with a TS flow bus interface at the input end of a corresponding FPGA signal processing board card through the mainboard card; the network interface of the FPGA signal processing board card is bidirectionally connected with the network interface of the multimedia processing server, can encapsulate and process the multi-path input TS stream signals of the FPGA into IPTV signals and output the IPTV signals to the multimedia processing server, and can also analyze and convert the IPTV signals of the FPGA network interface into TS bus signals and output the TS bus signals to a plurality of digital modulation board cards; the output end TS flow bus interface of the FPGA signal processing board card is connected with the TS flow bus interfaces of the input ends of the corresponding digital modulation board cards through the main board card; the radio frequency interface signals at the output ends of the plurality of digital modulation board cards are connected with the radio frequency interface at the input end of the hybrid amplification board; the radio frequency interface at the output end of the mixed amplification board is a digital television signal mixed with a plurality of paths of digital modulation board cards and can be transmitted in a coaxial digital television system. According to the signal processing device, the plurality of signal acquisition cards, the FPGA signal processing board card, the multimedia processing server, the plurality of digital modulation board cards and the hybrid amplification board connect signals together through the main board card, the number of electronic equipment is reduced, and wiring among the electronic equipment in the signal processing device is greatly simplified.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. A signal processing device for a multimedia terminal is characterized by comprising a main board card, and a plurality of signal acquisition cards, FPGA signal processing board cards, a plurality of digital modulation board cards and a mixed amplification board which are assembled on the main board card;
each signal acquisition card is bidirectionally connected with a communication serial port on a mainboard card, and a TS (transport stream) bus interface at the output end of each signal acquisition card is connected with a TS bus interface at the input end of a corresponding FPGA (field programmable gate array) signal processing board card through the mainboard card; the network interface of the FPGA signal processing board card is in bidirectional connection with the network interface of the multimedia processing server;
the output end TS flow bus interface of the FPGA signal processing board card is connected with the corresponding TS flow bus interfaces at the input ends of the plurality of digital modulation board cards through the main board card, the output end radio frequency interface signals of the plurality of digital modulation board cards are connected with the radio frequency interface at the input end of the hybrid amplification board, and the output end radio frequency interface of the hybrid amplification board is a digital television signal mixed with a plurality of paths of digital modulation board cards.
2. The signal processing apparatus for a multimedia terminal according to claim 1, wherein the signal acquisition card, the FPGA signal processing board, the digital modulation board and the hybrid amplifier board are all mounted on the main board in a pluggable manner.
3. The signal processing device for the multimedia terminal according to claim 1 or 2, wherein the main board card is further provided with a serial port switch, and the serial port switch is connected in series between each communication serial port and the main board card; and the communication between each communication serial port and the main board card is switched and controlled through the serial port switch.
4. The signal processing apparatus for a multimedia terminal according to claim 1 or 2, wherein the hybrid amplification board comprises a radio frequency hybrid circuit, an output signal level control circuit, and a signal amplifier circuit;
the input end of the radio frequency hybrid circuit is connected with the output end of each digital modulation board card, the input end of the output signal level control circuit is connected with the output end of the radio frequency hybrid circuit, and the input end of the signal amplifier circuit is connected with the output end of the output signal level control circuit.
5. The signal processing apparatus for a multimedia terminal according to claim 1, wherein the main board card is further provided with a communication network interface respectively connected to each of the FPGA signal processing board cards.
6. The signal processing apparatus for a multimedia terminal according to claim 1 or 2, wherein the signal acquisition card is a cable television signal acquisition card, a satellite television signal acquisition card, a terrestrial digital television signal acquisition card, an ASI signal acquisition card, an HDMI high definition signal acquisition card, or an SDI signal acquisition card.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222710022.XU CN218783841U (en) | 2022-10-14 | 2022-10-14 | Signal processing device for multimedia terminal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222710022.XU CN218783841U (en) | 2022-10-14 | 2022-10-14 | Signal processing device for multimedia terminal |
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| CN218783841U true CN218783841U (en) | 2023-03-31 |
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| CN202222710022.XU Active CN218783841U (en) | 2022-10-14 | 2022-10-14 | Signal processing device for multimedia terminal |
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Address after: 518000, Building 501, No. 2, No. 89 Hengping Road, Bao'an Community, Yuanshan Street, Longgang District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Dingshengwei Integrated Technology Development Co.,Ltd. Address before: 518000 1702, Xiangxie Fengjing garden, No. 12, Longzhu seventh Road, Fengjing community, Taoyuan Street, Nanshan District, Shenzhen, Guangdong Province Patentee before: Shenzhen Dingshengwei Electronics Co.,Ltd. |