TWI572163B - Switching device for satellite signals - Google Patents

Description

Satellite signal switching device

The invention relates to satellite live broadcast, in particular to a satellite signal switching device suitable for satellite live broadcast.

The global satellite live broadcast system has been widely used in receiving television and radio programs for more than a decade. The booming of paid satellite TV services, in addition to the vast coverage of broadcast satellites and the increasing popularity of high-definition TV content, is mainly the low cost of satellite receiving systems (LNB, Dish Antenna, Set-Top Box), allowing users to accept Greatly improved. Among them, the low noise downconverter is an important part of the satellite receiving system.

The existing satellite live broadcast system uses a traditional Low Noise Block Converter (LNB) or a wideband LNB. The control mode and the output LNB signal are different and cannot be mixed. The user must use the appropriate Traditional or broadband LNBs can broadcast traditional or broadband satellite live signals.

There is therefore a need for a conventional/wideband LNB that includes a satellite signal switching device that allows more than one user to simultaneously view different programs based on the output of multiple legacy and wideband LNBs.

Based on the above object, the present invention discloses a satellite signal switching device including a first switching circuit, a second switching circuit, and a controller. The first switching circuit receives four sets of conventional Low Noise Block Converter (LNB) signals, and selects one of the four sets of conventional LNB signals according to an analog control signal to output a first tradition. The LNB output signal analog control signal. The second switching circuit includes an output, the second switching circuit is coupled to the first switching circuit, and receives two sets of broadband LNB signals and the first conventional LNB output signal, and receives a digital switching control signal to obtain a broadband from the two groups. One of the LNB signal and the first conventional LNB output signal is selected to output a first switching output signal at the output end. The controller is coupled to the second switching circuit, and generates the digital switching control signal according to an LNB control signal.

The invention further discloses a satellite signal switching device comprising a first switching circuit, a second switching circuit, and a controller. The first switching circuit receives four sets of conventional Low Noise Block Converter (LNB) signals, and selects a complex array of the first conventional LNB output signals from the four sets of conventional LNB signals according to an analog control signal. Each of the first conventional LNB output signals may be one of the above four conventional LNB signals. The second switching circuit includes a complex array output terminal, and is coupled to the first switching circuit, receives two sets of broadband LNB signals and the complex array first conventional LNB output signals, and receives a digital switching control signal from the two sets of broadband LNBs. Select one of the signal and the first complex LNB output signal of the above complex array to One of the output of the complex array outputs one set of switching output signals. The controller is coupled to the second switching circuit, and generates the digital switching control signal according to an LNB control signal.

1‧‧‧ satellite system

10‧‧‧Satellite dish antenna

12‧‧‧Traditional/Broadband LNB+IF Switching Device

14‧‧‧Broadband STB

16a, 16b‧‧‧ Traditional STB

20a, 20b‧‧‧ antenna

21a, 21b‧‧‧Low noise amplifier

22a, 22b‧‧‧ power splitter

23a-23b‧‧‧Bandpass filter

24a-24f‧‧‧ Downconverter

25‧‧‧IF switching device

26a-26f‧‧‧buffer

WBV, WBH‧‧‧ wideband signal

VH, VL, HL, HH‧‧‧ traditional signals

S _out1 , S _out2 , S _out3 , S _out4 , S _out5 , S _out6 ‧‧‧ output signal

25‧‧‧IF switching device

3‧‧‧IF switching circuit

30‧‧‧4xn switching circuit

32‧‧‧(2+n)x n switching circuit

34‧‧‧MCU

Sa, Sd‧‧‧ control signals

40a, 40b, 40c, 40d‧ ‧1 rpm z power splitter

42a, 42b, 42n‧‧‧4xa switching IC, 4xb switching IC, 4xn switching IC

L1, L2, ..., Ln‧‧‧ output signals

S1, S2, ..., Sn‧‧‧ output signals

C1, C2, ..., Cn‧‧‧ control signals

30‧‧‧4xn switching circuit

40a, 40b, 40c, 40d‧ ‧1 rpm z power splitter

42a, 42b, 42n‧‧‧4xa switching IC, 4xb switching IC, 4xn switching IC

VL-1~VL-z, VH-1~VH-z, HH-1~HH-z, and HL-1~HL-z‧‧‧ traditional signals

Sa1, Sa2, ..., Sa3‧‧‧ control signals

L1~La, L(a+1)~L(a+b), and L(n-c+1)~L(n)‧‧‧ output signals

50a, 50b‧‧1 rpm d power splitter

52a, 52b, 52n‧‧‧(2+e)x e switching IC, (2+f)x f switching IC, (2+g)x g switching IC

WBV-1~WBV-d, WBH-1~WBH-d‧‧‧Broadband signal

L1~Le, L(e+1)~L(e+f), and L(n-g+1)~L(n)‧‧‧ traditional signals

Sd1, Sd2, ..., Sd3‧‧‧ control signals

S ₁₁ , S ₂₁ , S _e1 , S ₁₂ , S ₂₂ , S _f2 , S _1d , S _2d , S _gd ‧‧‧ output signal

6‧‧‧IF switching device

600a, 600b, 600c, 600d, 620a, 620b‧‧‧ power splitters

602a‧‧4x4 switching circuit

602b, 622a, 622b, 622c‧‧‧4x2 switching circuit

VL-1~VL-2, VH-1~VH-2, HH-1~HH-2, and HL-1~HL-2‧‧‧ traditional signals

WBV1~WBV3, WBH1~WBH3‧‧‧ Wideband signal

S _MCU ‧‧‧Digital switching control signal

Port1, Port 2, ..., Port 6, P1, P2, ..., Pn‧‧‧ output

1 is a schematic diagram showing a satellite live broadcast system 1 in an embodiment of the present invention.

Fig. 2 is a block diagram showing a low noise down converter switching device 12 in the embodiment of the present invention.

Fig. 3 is a schematic view showing an intermediate frequency switching device 3 in the embodiment of the present invention.

Fig. 4 is a block diagram showing a 4xn switching circuit 30 in the embodiment of the present invention.

Fig. 5 is a view showing a (2+n)xn switching circuit 32 in the embodiment of the present invention.

Fig. 6 is a block diagram showing an intermediate frequency switching device 6 in the embodiment of the present invention.

The various embodiments and examples set forth in the following disclosure are intended to illustrate various technical features disclosed herein, and the specific examples or arrangements described herein are used to simplify the invention. It is not intended to limit the invention. In addition, the same reference numerals and symbols may be used repeatedly in different embodiments or examples, and such repeated reference numerals and symbols are used to illustrate the present invention. The disclosure of the invention is not intended to represent the relationship between the various embodiments or examples.

1 is a block diagram showing a schematic diagram of a satellite system 1 according to an embodiment of the present invention, including a satellite dish antenna 10, a conventional Low Litter Low Frequency Blocker (LNB), and an intermediate frequency (hereinafter referred to as LNB). The Intermediate Frequency (hereinafter referred to as IF) switching device 12, the Set Top Box (STB) 14 and the conventional STBs 16a and 16b. The satellite system 1 is suitable for use with a legacy (Legacy) LNB, a wideband LNB, or both, and can provide multiple legacy or wideband LNB outputs. For example, the satellite system 1 includes both the broadband STB 14 and the conventional STBs 16a, 16b. After receiving the satellite live broadcast signal from the satellite dish antenna 10, the same set of LNB and IF switching devices 12 can simultaneously provide satellite signals to the living room. Broadband STB 14 and traditional STBs 16a, 16b set in bedrooms and kitchens.

The satellite systems of the traditional LNB and the broadband LNB receive the same satellite signal in the same way, but the output mode is different. The traditional LNB cuts the received satellite signal into four parts, and the user sends a traditional control signal to control which part of the LNB to output the down-converted signal to the user. The broadband LNB will down-convert all received signals to the STB. The STB does not need to send the traditional LNB control signal to control the LNB to send the cut part of the down-converted signal, but to demodulate the STB from all received down-converted signals. The user wants to watch the program, and the user can install a division of labor at the output of the LNB, so that one LNB can provide a signal to a large number of users to watch the program. Traditional STB cannot demodulate broadband The signal sent by the LNB must use the new broadband STB, and the wideband STB cannot demodulate the signal sent by the traditional LNB and must use the traditional STB. Before the user has completely updated the STB, a traditional/broadband LNB switching device 12 can be automatically switched during the transition to allow the user to use both the legacy and wideband STBs, or when the user wants to replace the broadband STB. It is not necessary to simultaneously replace the conventional/wideband LNB switching device 12.

The invention provides a satellite system 1 using a conventional/wideband LNB switching device 12, which can automatically switch the output of the traditional/wideband LNB and has multiple outputs, allowing more than one user to simultaneously view the outputs of multiple conventional and broadband LNBs. Different programs.

FIG. 2 is a block diagram showing a conventional/wideband LNB switching device 12 according to an embodiment of the present invention, including antennas 20a and 20b, low noise amplifiers (LNAs) 21a and 21b, and power splitter 22a. 22b, band pass filters 23a to 23f, down converters 24a to 24f, IF switching means 25, and buffers 26a to 26f. The legacy/broadband LNB 2 receives 1 or 2 antenna signals from a satellite (not shown) and outputs 1 to 6 LNB output signals to a legacy STB or a wideband STB. The traditional/broadband LNB 2 can select any of the traditional or wideband six input down- _converted signals to output the signals S _out1 to S _out6 from any output to the traditional STB or wideband STB, allowing the user to connect the legacy or wideband STB at will.

The antennas 20a, 20b receive the conventional and wideband antenna signals, and the power is amplified by the LNAs 21a, 21b, respectively. The signals 1 are divided into 3 by the power splitters 22a, 22b, filtered by the bandpass filters 23a through 23f, and the downconverters 24a are 24f reduces the signal frequency to an intermediate frequency and selects an appropriate one or more outputs through the IF switching device 25. The legacy output wideband and wideband LNBs are sent via buffers 26a through 26f to one or more legacy STBs or wideband STBs.

Please refer to the output of the down-converter 24a, wherein the signals WBV and WBH are the down-converted signals of the broadband LNB, and the VH, VL, HL, and HH are the four down-converted signals cut by the conventional LNB. The main function of the IF switching device 25 is to arbitrarily select one of the six signals of the broadband signal WBV, WBH or the conventional signals VL, VH, HH, HL to output from one of the six outputs. For example, the user can select the four output terminals of the IF switching device 25 to output the traditional signals VL, VH, HH, HL and the following two output terminals respectively output the broadband signals WBV, WBH.

3 is a schematic diagram showing an IF switching device 3 according to an embodiment of the present invention, including a 4xn switching circuit 30, a (2+n)xn switching circuit 32, and a controller, such as a Microcontroller Unit (hereinafter referred to as an MCU). 34. The IF switching device 3 can be used as the IF switching device 25 in the conventional/wideband LNB 2 of FIG. 2, and receives the broadband signal WBV, WBH or the conventional signals VL, VH, HH, HL from the down-converter, and each IF switching device 3 The output terminal can select one of the wideband signals WBV, WBH and the conventional signals VL, VH, HH, HL as output signals, and each output signal can be output to the conventional or broadband STB.

Referring to FIG. 3, the 4xn switching circuit 30 receives the inputs of the four sets of conventional signals VL, VH, HH, HL and outputs n sets of output signals L1, L2, ..., Ln to (2+n) xn switching circuit 32, wherein the output The signals L1, L2, ..., Ln can be one of four sets of conventional signals VL, VH, HH, HL, and can be selected by the conventional control signal Sa. The conventional control signal Sa is sent by the STB with different input voltages and an input sound source (tone, about 22 kHz) to control which signal the LNB is to selectively output. Therefore, the 4xn switching circuit 30 is similar to a conventional LNB having n outputs. For the other n users, the traditional control signal Sa is the input voltage and the input source to select the signal source. The n sets of LNB control signals C1, C2, ..., Cn are input signals from the STB, and each set of control signals may be an analog control signal from a conventional STB or a digital control signal from a wideband STB. The conventional control signal Sa may include an analog signal, which is separately sent from the conventional STB to the conventional LNB to determine which conventional signal is to be sent by the corresponding output of the 4xn switching circuit 30. When the LNB control signals C1, C2, ..., Cn are transmitted by the conventional STB, each group of LNB control signals C1, C2, ..., Cn may include a high or low voltage and a 0 kHz or 22 kHz sound source. For example, when one of the conventional LNBs coupled to the 4xn switching circuit 30 sends an analog control signal including 13V (low voltage) and 0 kHz (sound source) to the 4xn switching circuit 30, the 4xn switching circuit 30 outputs the conventional signal VL at the corresponding output. . The n STB users can use the n analog control signals to select the traditional signals output by the corresponding output terminals. The output signals L1, L2, ..., Ln of the 4xn switching circuit 30 are output to the (2+n)xn switching circuit 32.

(2 + n) xn MCU34 switching circuit 32 sends a switching control signal selectively output broadband signal S _d WBV or WBH or conventional signal VL, VH, HH, or HL. The (2+n)xn switching circuit 32 includes n output terminals P1, P2, ..., Pn (n>=1), and each of the output terminals P1, P2, ..., Pn can output a set of output signals S1, S2, ... , Sn, wherein each set of output signals S1, S2, ..., Sn may be a wideband signal WBV, WBH and traditional signal VL, VH, HH, HL, and in one group, and the switching control signal S _d may be selected.

The MCU 34 generates the switching control signal Sd based on the LNB control signals C1, C2, ..., Cn generated by the conventional and wideband STB. When the LNB control signals C1, C2, ..., Cn are transmitted by the broadband STB, each group of LNB control signals C1, C2, ..., Cn may include Digital Satellite Equipment Control (DiSEqC) or frequency shift. Key (Frequency Shift Keying, FSK) signal. The (2+n)xn switching circuit 32 can independently receive the switching control signal Sd to determine whether the corresponding output terminal is to transmit the broadband signal as WBV or WBH. In one embodiment, LNB control signals C1, C2, ..., Cn and comprising a signal DiSEqC LNB MCU34 the control signal C1, C2, ..., Cn is converted into a switching control signal S _d. If the LNB control signals C1, C2, ..., Cn received by the MCU 34 are digital control signals generated by the broadband STB, the digital switching control signal Sd corresponding to the digital control signal is generated, and the (2+n)xn switching circuit 32 is The digital switching control signal Sd corresponding to the digital control signal selects one of the two sets of broadband LNB signals as a switching output signal, that is, selecting the broadband signal WBV or WBH to output from the corresponding output terminal. When the LNB control signals C1, C2, ..., Cn received by the MCU 34 are analog control signals generated by the conventional STB, a digital switching control signal Sd corresponding to a preset setting is generated, and the (2+n)xn switching circuit 32 is generated. The traditional LNB output signal is selected as the switching output signal according to the digital switching control signal S _d corresponding to the preset setting. For example, the switching signal from the circuit 30 4xn received _{L x (x = 1 ~ n} ) as an output signal directly to the output S _x P _x.

When the specific DiSEqC command is not sent, for the conventional STB, the circuit setting of the IF switching device 3 is equivalent to seeing only the 4xn switching circuit 30, and the conventional signal VL, VH, HH, or HL is directly traversed (2+n). The xn switching circuit 32 transmits to the conventional STB; and for the wideband STB, the (2+n)xn switching circuit 32 can correctly interpret the DiSEqC command to send the WBV or WBH wideband signal if it receives the DiSEqC command. Thus such an IF switching device 3 can be simultaneously compatible for use with both legacy and broadband LNBs.

4 is a block diagram showing a 4xn switching circuit 30 in the embodiment of the present invention, including 1-to-z power splitters 40a, 40b, 40c, 40d and switching ICs 42a, 42b, ..., 42n. The 4xn switching circuit 30 can be the 4xn switching circuit 30 of FIG. As described in FIG. 3, the 4xn switching circuit 30 receives the legacy signal VL, VH, HH, or HL from the downconverter and selects to output the legacy signal to the (2+n)x n switching circuit in accordance with the control signal Sa.

The switching ICs 42a, 42b, ..., 42n have four sets of inputs receiving the conventional signals VL, VH, HH, and HL from the 1-to-z power splitters 40a, 40b, 40c, 40d, and the n sets of outputs outputting one or more sets of conventional Signals VL-1~VL-z, VH-1~VH-z, HH-1~HH-z, and HL-1~HH-z are used as output signals L1, L2, ..., Ln. In certain embodiments, VL-1~VL-z, VH-1~VH-z, HH-1~HH-z, and HL-1~HH-z are copies of VL, VH, HH, and HL Signal. For example, signals VL-1, VH-1, HH-1, and HL-1 are a set of conventional signals VL, VH, HH, and HL, and signals VL-2, VH-2, HH-2, and HL-2 are Another set of traditional signals VL, VH, HH, and HL, and so on. In some embodiments, the switching IC may be a 4x2 or 4x4 switching IC, but this patent is not limited thereto, and may be arbitrarily combined with different 4x x switching ICs ( x is an arbitrary value) to be combined into a desired n outputs.

The input control signals Sa1, Sa2, ..., Sa3 of the switching ICs 42a, 42b, ..., 42n may be analog signals from the conventional STB, but not limited by analog signals. The analog signal generated by the traditional STB includes the traditional input voltage and the input sound source control signal. The control signal sent by the user from the conventional STB does not need to do too much hardware circuit for conversion to control the 4x switching ICs 42a, 42b, ..., 42n.

Figure 5 is a schematic diagram showing a (2+n)xn switching circuit 32 in the embodiment of the present invention, including a 1-to-d power splitter 50a, 50b and (2+e)xe switching. The IC 52a, (2+f) xf switching ICs 52b, ..., (2+g) xg switch the IC 52n, and the output signals L1 to Ln are the conventional signals outputted from the 4xn switching circuit of Fig. 4. The (2+n)xn switching circuit 32 can be the (2+n)xn switching circuit 32 of FIG. As described in FIG. 3, the (2+n)xn switching circuit 32 receives the wideband signals WBV and WBH from the downconverter and the output signals L1, L2 representing the conventional signals VL, VH, HH and HL output by the 4xn switching circuit 30. , ..., Ln, and selectively output the broadband signals WBV and WBH or the conventional signals VL, VH, HH and HL.

The (2+n)xn switching IC in Figure 5 can have n traditional signals and 2 wideband signals as input signals, and has n sets of outputs. The n sets of outputs can select wideband signals WBV and WBH or traditional signals VL, VH, HH and HL.

The 1-to-d power splitters 50a and 50b receive two sets of broadband signals WBV and WBH, and output one or more sets of broadband signals WBV-1 to WBV-d and WBH-1 to WBH-d. For example, the broadband signal WBV-1~WBV-d is the WBV copy signal, and the broadband signal WBH-1~WBH-d is the WBH copy signal.

The (2+n)xn switching ICs 52a, 52b, ..., 52n receive the conventional signal and the wideband signal by the 1-to-d power splitters 50a, 50b, and 4xn switching circuits, and output n sets of outputs according to the digitized DiSEqC signal, each set of outputs. It can be one of the traditional signals and broadband signals received. The DiSEqC control signal can be a digital signal, but is not limited to the digital signal. The MCU (not shown) reads the DiSEqC control signal from the broadband STB and converts it into digital switching control signals Sd1, Sd2, ..., Sd3. If the (2+n)xn switching ICs 52a, 52b, ..., 52n are digital switching ICs, the (2+n)x n switching ICs 52a, 52b, ..., 52n can be controlled without additional hardware circuitry for conversion. For example, the (2+n)x n switching IC 52a receives two sets of wideband signals WBV-1, WBH-1 from the 1-to-d power splitters 50a, 50b and receives e from the 4xn switching circuit. The conventional signals L1, L2, ..., Le are grouped, and one or more sets of S11, S21, ..., Se1, ..., S1d, ..., Sgd, etc. are selected in accordance with the digital switching control signals Sd1 or Sd2, ..., Sd3.

Figure 6 is a block diagram showing another IF switching device 6 in the embodiment of the present invention, including a 4xn switching circuit 60 and a (2+n)xn switching circuit 62. The 4xn switching circuit 60 includes a power splitter 600a. , 600b, ..., 600d and 4x4 switching circuits 602a and 4x2 switching circuits 602b. The (2+n)xn switching circuit 62 includes power splitters 620a, 620b and 4x2 switching circuits 622a, 622b, 622c. The IF switching device 6 is an IF switching device that has six inputs and six outputs that can automatically switch selection inputs.

The 4x4 switching circuit 602a and the 4x2 switching circuit 602b are analog control switching ICs, both of which receive 4 sets of conventional signals VL, VH, HH, and HL, and the 4x4 switching circuit 602a can output up to 4 sets of output signals according to the selection of the analog control signal Sa. The 4x2 switching circuit 602b can output up to 2 sets of output signals according to the selection of the analog control signal Sa. The analog control signals Sa and Sb may comprise a combination of high or low voltage and a 0 kHz or 22 kHz source, generated by a conventional STB (not shown) connected to the IF switching device 6.

The 4x2 switching circuits 622a, 622b, and 622c are digital control switching ICs, all of which receive two sets of conventional signals and two sets of broadband signals, and can output up to two sets of output signals according to the selection of the digital switching control signal S _MCU . The digital switching control signal S _MCU can be a DiSEqC signal generated by a broadband STB (not shown) connected to the IF switching device 6.

The embodiments of FIGS. 1 to 6 are used to implement a conventional/wideband LNB switching device, which can automatically switch the output of the legacy/wideband LNB and have multiple outputs. To allow more than one user to simultaneously view different programs based on the output of multiple legacy and broadband LNBs.

Those skilled in the art will appreciate that information and signals can be represented using a variety of different techniques. For example, the materials, instructions, information, signals, bits, symbols, and wafers described in the specification can be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, light fields or particles, or any combination of the above.

Those skilled in the art will appreciate that the various logical blocks, modules, processors, actuators, circuits, and algorithm steps described in the specification can be implemented by circuit hardware (eg, digitally implemented hardware, analog hardware, or both). Combination of the following, which can be designed and implemented by source code or other related technologies), using various forms of code or design code of instructions (also referred to herein as software or software modules), or a combination of the two. achieve. To clearly illustrate the interchangeability of the above described software and hardware, the various illustrated elements, blocks, modules, circuits, and steps described in the specification are generally described in terms of their function. The implementation of these features in software or hardware will be related to the specific application and design constraints of the complete system. The described functionality may be implemented in a variety of ways for each particular application, but the implementation is not deviated from the spirit and scope of the invention.

In addition, the various logic blocks, modules, and circuits described herein can be implemented using integrated circuits (ICs) or by an access terminal or access point. The integrated circuit may include a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA), or the like. Programmable logic components, discrete logic circuits or transistor logic gates, discrete hardware elements Any combination of components, electrical components, optical components, mechanical components, or functions for performing the operations described herein, which may execute code or program instructions resident, external, or both in an integrated circuit. . A general purpose processor may be a microprocessor, or the processor may be any commercially available processor, controller, microprocessor, or state machine. The processor may also be implemented by a combination of computing devices, such as a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors, and a DSP core, or other various arrangements.

It will be understood by those skilled in the art that the specific sequence or sequence of steps of the present disclosure is merely exemplary. The specific order or sequence of steps of the program disclosed herein may be re-arranged in other orders, as may be apparent to those skilled in the art. The order of the steps in the method and the requirements of the embodiments of the present invention are merely examples, and are not limited to the specific order or sequence of steps of the present invention.

The method or algorithm step can be implemented by a hardware or a processor, or a combination of the two. Software modules (including executable instructions and related materials) and other data can be stored in the data memory, such as RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, temporary storage A storage medium (such as a computer readable) that can be read by a device, hard drive, floppy disk, CD, or any other machine. The data storage medium can be coupled to a machine, such as a computer or processor (which can be referred to as a "processor"), which can read and write code from the storage medium. The data storage medium can be integrated into the processor. The processor and storage media can be hosted within the ASIC. The ASIC can reside in the user equipment. Alternatively, the processor and the storage medium may reside within the user equipment in the form of discrete components. In addition, applicable computer program products may include computer readable media Body, including code about one or more disclosures. In some embodiments, a suitable computer program product can include packaging materials.

The present invention has been described above by way of a preferred embodiment, and is not intended to limit the invention, and the invention may be modified and modified without departing from the spirit and scope of the invention. The scope of protection is subject to the definition of the scope of the patent application.

3‧‧‧IF switching circuit

30‧‧‧4xn switching circuit

32‧‧‧(2+n)x n switching circuit

34‧‧‧MCU

WBV, WBH‧‧‧ wideband signal

VH, VL, HL, HH‧‧‧ traditional signals

L1, L2, ..., Ln‧‧‧ output signals

S _a , S _d ‧‧‧ control signals

P1, P2, ..., Pn‧‧‧ output

C1, C2, ..., Cn‧‧‧ control signals

S1, S2, ..., Sn‧‧‧ output signals

Claims (12)

A satellite signal switching device includes: a first switching circuit that receives four sets of conventional Low Noise Block Converter (LNB) signals, and selects from the four sets of conventional LNB signals according to an analog control signal. One of the first switching circuit outputs a first conventional LNB output signal; a second switching circuit includes an output terminal coupled to the first switching circuit, receiving two sets of broadband LNB signals and the first conventional LNB output signal, and receiving one The digital switching control signal is selected from the two sets of broadband LNB signals and the first conventional LNB output signal to output a first switching output signal at the output end; and a controller coupled to the second switching circuit The digital switching control signal is generated according to an LNB control signal. The satellite signal switching device of claim 1, wherein the first switching circuit comprises: four sets of first power splitters, wherein each set of power splitters respectively receives one of the four sets of conventional LNB signals. And generating a output; and a sub-switching circuit, coupled to the four sets of first power splitters, selecting one of the outputs of the four sets of first power splitters according to the analog control signal to output the first conventional LNB Output signal. The satellite signal switching device of claim 1, wherein the second switching circuit comprises: two sets of second power splitters, wherein each set of power splitters respectively receives one of the two sets of broadband LNB signals; To produce an output; a first sub-switching circuit coupled to the two sets of second power splitters, and selecting one of the outputs of the two sets of first power splitters and the first conventional LNB output signal according to the digital switching control signal The first switching output signal is outputted. The satellite signal switching device of claim 3, wherein the second switching circuit further comprises: another output terminal for outputting a second switching output signal; and a second sub switching circuit, wherein the The two sub-switching circuit selects one of the output of the two sets of first power splitters and the first conventional LNB output signal according to the digital switching control signal to output the second switched output signal to the other output end. . The satellite signal switching device of claim 1, wherein when the controller receives the LNB control signal as the analog control signal, generating the digital switching control signal corresponding to a preset setting, and the foregoing The second switching circuit selects the traditional LNB output signal as the first switching output signal according to the digital switching control signal corresponding to the preset setting. The satellite signal switching device of claim 1, wherein when the controller receives the LNB control signal as a digital control signal, generating the digital switching control signal corresponding to the digital control signal, The second switching circuit selects one of the two sets of broadband LNB signals as the first switching output signal according to the digital switching control signal corresponding to the digital control signal. The satellite signal switching device according to claim 1, wherein The analog control signal includes an input voltage and an input source. A satellite signal switching device includes: a first switching circuit that receives four sets of conventional Low Noise Block Converter (LNB) signals, and selects one of the four conventional LNB signals according to an analog control signal. The first traditional LNB output signal is a plurality of sets of the first conventional LNB output signals, wherein each of the first conventional LNB output signals is one of the four sets of conventional LNB signals; a second switching circuit includes a complex array output end, and is coupled to the first switching circuit Receiving two sets of broadband LNB signals and the first complex LNB output signal of the complex array, receiving a digital switching control signal to select one of the two sets of broadband LNB signals and the first array of the first conventional LNB output signals for the above One of the output of the complex array outputs one set of switching output signals; and a controller coupled to the second switching circuit to generate the digital switching control signal according to an LNB control signal. The satellite signal switching device of claim 8, wherein each of the first switching circuits comprises: four sets of first power splitters, wherein each set of power splitters respectively receives the four sets of conventional LNB signals. a group to generate an output; and a first sub-switching circuit coupled to the four sets of first power splitters, and selecting the complex array from the output of the four sets of first power splitters according to the analog control signal Four sets of first conventional LNB output signals of the LNB output signal; and a second sub-switching circuit coupled to the four sets of first power splitters, according to The analog control signal selects two sets of the first conventional LNB output signals of the first array of the first conventional LNB output signals from the outputs of the four sets of first power splitters. The satellite signal switching device of claim 8, wherein each of the second switching circuits comprises: two sets of second power splitters, wherein each set of power splitters respectively receives the two sets of broadband LNB signals. One set to generate an output; and three sets of third sub-switching circuits, wherein each set of third sub-switching circuits is coupled to the two sets of second power splitters, and the control signals are switched from the two sets of first power splitters according to the digital switching One of the output and the first conventional LNB output signal of the complex array is selected to output the one set of switching output signals. The satellite signal switching device of claim 8, wherein when the controller receives the LNB control signal as the analog control signal, generating the digital switching control signal corresponding to a preset setting, and each The second switching circuit selects the traditional LNB output signal as the one set of switching output signals according to the preset setting, and when the controller receives the LNB control signal as a digital control signal, generates a digital control signal corresponding to the digital control signal. The digital switching control signal is used, and the second switching circuit selects one of the two sets of broadband LNB signals as the one set of switching output signals according to the digital switching control signal corresponding to the digital control signal. The satellite signal switching device of claim 8, wherein the analog control signal comprises an input voltage and an input sound source.