CN201131023Y

CN201131023Y - Digital conversion apparatus for multiple satellite receiver

Info

Publication number: CN201131023Y
Application number: CNU2007203067282U
Authority: CN
Inventors: 张介品
Original assignee: BAIYI ELECTRONIC Co Ltd
Current assignee: BAIYI ELECTRONIC Co Ltd; Prime Electronics and Satellitics Inc
Priority date: 2007-12-11
Filing date: 2007-12-11
Publication date: 2008-10-08
Anticipated expiration: 2017-12-11

Abstract

The utility model relates to a digital converter, comprising a transmission terminal group for electrically connecting a digital set-top box and a plurality of connection terminal groups for respectively and electrically connecting a receiver of a satellite receiving device. The utility model is characterized in that each connection terminal group is provided with at least a multiple satellite connection terminal group for electrically connecting a plurality of satellite receivers, the multiple satellite receiver is able to receive the different satellite signal from a plurality of neighbored satellites, the different satellite signal is converted into the intermediate frequency with the different frequency band by demultiplying the frequency, and the digital converter is used for communicating each connection terminal group with the transmission terminal group electrically.

Description

The digital switching device of multiple satellite receiver

Technical field

The utility model is relevant with satellite receiving system, is meant a kind of digital switching device that is used for multiple satellite receiver especially.

Background technology

Under the situation that satellite digital TV is day by day popularized, the available channel-selective of system dealer receives the user by the system that uses single satellite transmits to promote to many satellites to satisfy, therefore receive the user when the reception of making many satellites, except the satellite antenna and receiver of extra increase, the signal line that often disposes many according to the satellite number of the transmission that provides enters within doors, receive by each again that box is received on the indoor teaching machine of user, and in order to improve because of the configuration of many signal line the construct a large amount of man-hour of required cost and the cable quantity of use, system dealer is then in the signal selector that provides relaying on the satellite receiver of open air and each user's the teaching machine between the box, and purpose is to make to receive the user and only need dispose the Digital Television that single cable can receive multi-satellite system.

With digital TV receiving system shown in Figure 11 is example, the satellite signals that satellite antenna 11 is received in each satellite receiver 10 are after receiver 12 down conversion process, prior to an outdoor digital satellite device controller (the Digital Satellite Equipment Control that is connected to, DiSEqC) each input 201 of 20, be connected to box 30 on the teaching machine of indoor user with cable in single output 202 again, therefore the user is by controlling on the teaching machine box 30 signal of each satellite antenna 10 of selective reception in doors, the functional block diagram of this controller 20 shown in Figure 2 is its signal selection function, when client after box 30 instruction of sending the satellite channel of choosing enters the output 202 of controller 20 on by teaching machine, its inner microcontroller chip 21 is about to channel that circuit for detecting 22 detected and chooses instruction and handle through decoding, and in the particular switch node 21a of correspondence, 21b, 21c, 21d sends and controls signal to selected on-off circuit 23, therefore selected on-off circuit 23 triggers corresponding input end 201 again and electrically conducts to output 202, will choose pairing receiver 12 switched conductive of satellite channel box 30 to the numerical digit machine.

Even if above-mentioned digital TV receiving system 1 can be for receiving the signal channel selection that the user has a plurality of satellites, satellite antenna 10 number needs of right required configuration take very big spatial dimension, and with the situation of being jammed on the popularity of present satellite communication and the satellite orbit, distance is the longitude that 2 to 3 degree do not wait between the adjacent satellite, the satellite that has as the triangular web dealer is adjacent spaces so, generally need to use two satellite receivers 40 as shown in Figure 3, on satellite antenna 41, set up a pair of satellite frequency reducing receiver 42, make two of receiver 42 receive bugle 421,422 can be in the antenna focusing scope on the same dish-like satellite antenna 41 with the satellite signals SA of adjacent two satellites, SB receives respectively fully.

So, so the dual-satellite system of popularizing also only can provide the channel selection of two satellite signals, if desire to increase again all the other satellite antennas with as above-mentioned digital TV receiving system 1 as provide and receive the more satellite band of user and select, but be subject to the functional structures of controller 20 itself and can't use and be arranged in two satellite receivers; Its reason is, each switching node 21a of microcontroller chip 21 in the

controller

20,21b, 21c, 21d corresponds respectively to and can start its triggering function for the frequency range under each satellite that receives, and then with each satellite the corresponding single input of establishing 201 and output 202 triggering and conducting that connect, right above-mentioned pair of satellite receiver is for being entrained with two satellite signals SA of two kinds of different satellite bands with single output, SB, even the reception user installs 20 of above-mentioned controllers and only can be arranged in a wherein input 201, make the microcontroller chip 21 can only be with single switching node (as the switching node 21a) triggering and conducting of correspondence, that is handled couple of satellite signals SA of two satellite frequency demultipliers, only there is the pairing frequency range of one of them satellite signals (as satellite signals SA) to choose reception among the SB for receiving the user, the pairing frequency range of another satellite signals (as satellite signals SB) then because of another switching node (as switching node 21b) do not have can corresponding triggering and conducting input 201 can't choose reception for receiving user's correspondence, whole receiving system like this is for receiving the user, and the channel that has reduced by a satellite on the contrary receives.

The utility model content

The purpose of this utility model is to provide a kind of digital switching device of multiple satellite receiver, makes the satellite signals receiving equipment that the reception user can be less have the channel selection function of many satellite signals.

For achieving the above object, the digital switching device of the multiple satellite receiver that the utility model provides, have a transmission ends group and most link groups, have at least one many satellites link group in those link groups and can be electrically connected at many satellite receivers, it includes:

One controller has a command end group and most switch terminal groups, and this command end group electrically connects above-mentioned transmission ends group, receives the instruction signal that includes the certain selected frequency, sends trigger signals in this switch terminal group wherein after this controller decoding is handled; And,

A most switching circuit, electrically connect respectively this link group and this transmission ends group respectively, have at least one many satellite transmits switching circuit in those switching circuits and electrically connect at least two these switch terminal groups and this at least one many satellites link group, respectively this switching circuit receives above-mentioned trigger signals and electrically conducts with this link group and this transmission ends group with the correspondence connection;

Above-mentioned many satellite receivers are in order to receive the different satellite signals from several adjacent satellite, become the intermediate frequency signal of different frequency range through down conversion process, the intermediate frequency signal that this many satellite transmits switching circuit can make above-mentioned many satellite receivers export transfers to this transmission ends group via this many satellites link group.

Described digital switching device, wherein this many satellite transmits switching circuit has most the switch modules that electrically connect mutually, and respectively this switch module electrically connects this switch terminal group respectively.

Described digital switching device, wherein the trigger signals sent of this controller is greater than the limit voltage quasi position of at least one diode.

Described digital switching device wherein has at least one single satellite transmits switching circuit and electrically connects this switch terminal group in those switching circuits.

Described digital switching device, wherein this many satellite transmits switching circuit includes the circuit identical with this list satellite transmits switching circuit and most switch modules, and respectively this switch module electrically connects this switch terminal group respectively.

The satellite receiving system that provides by the utility model, be to be equipped with box on most satellite receivers and the teaching machine with a digital switching device, this digital switching device has a transmission ends group and most link groups, have at least one many satellites link group in those link groups and be electrically connected at satellite receiver more than, these many satellite receivers are in order to receive the different satellite signals from several adjacent satellite, become the intermediate frequency signal of different frequency range through down conversion process, this digital switching device transfers to this transmission ends group in order to the intermediate frequency signal that many satellite receivers are exported via this many satellites link group, not only there is the reception of a plurality of satellite channels to select for client, make a satellite receive the user and get final product the satellite signals that each satellite receiver of selective reception is transmitted by box on the teaching machine set in the OPS, and can be provided with many satellite receivers on satellite antenna to receive more satellite signals, therefore save the hardware space of whole satellite receiving system, make the user-selected frequency range signal of getting each satellite of reception all can effectively export box on this teaching machine to simultaneously.

Description of drawings

Fig. 1 is the device schematic diagram of known digital TV receiving system;

Fig. 2 is the circuit function schematic diagram of the digital satellite device controller of above-mentioned known digital TV receiving system;

Fig. 3 is two satellite receivers of the utility model satellite receiving system that most preferred embodiment provides;

Fig. 4 is the device schematic diagram that above-mentioned most preferred embodiment provides;

Fig. 5 is the circuit diagram of digital switching device that above-mentioned most preferred embodiment provides.

Primary clustering symbol description in the accompanying drawing:

2 satellite receiving systems

10,40 satellite receivers

11,41 satellite antennas

12 single satellite receivers

Satellite receiver more than 42

50 digital switching devices

501 transmission ends groups

502 single satellite link groups

The link of satellite more than 503 group

51 controllers

511 command end groups

512 sequential end groups

513 switch terminal groups

52 circuit for detecting

53 selected on-off circuits

531 single satellite transmits switching circuits

The switching circuit of satellite transmits more than 532

The 532a switch module

Box on 60 teaching machines

Embodiment

Below, cooperate some accompanying drawings to enumerate a preferred embodiment, in order to composition member of the present utility model and effect are described further:

See also shown in Figure 4, preferred embodiment is provided a satellite receiving system 2 by the utility model, be to be equipped with most satellite receivers 10 with a digital switching device 50, box 60 on 40 and one teaching machine, make a satellite receive the user and get final product each satellite receiver 10 of selective reception by box on this set in OPS

teaching machine

60,40 satellite signals that transmitted, those

satellite receivers

10,40 are as above-mentioned and have a satellite antenna of being located at 11, single satellite receiver 12 of 41 and many satellite receivers 42, the digital satellite device controller of this digital switching device 50 for having signal selector switch function, have to connect for an external transmission ends group 501 and establish box 60 on this teaching machine, and can be for most external link groups 502,503 connect respectively and establish respectively this

satellite receiver

10,40

receiver

12,42, those link groups 502, be single satellite link group 502 with single satellite receiver 12 electric connection persons in 503, electrically connecting with many satellite receivers 42 is many satellites link group 503, see also shown in Figure 5, the internal circuit of this digital switching device 50 includes a controller 51, one circuit for detecting 52 and a selected on-off circuit 53, wherein:

This controller 51 has a command end group 511, a sequential end group 512 and most switch terminal groups 513, this command end group 511 electrically connects this circuit for detecting 52 and transmission ends group 501 with sequential end group 512, this command end group 511 is in order to receive this transmission ends group 501 instruction signal that includes the certain selected frequency of sending, this sequential end group 512 can form specific frenquency signal to control the sequential running of this controller 51, and the certain selected frequency that this instruction signal included is sent trigger signals in this specific switch terminal group 512 after decoding is handled.

This circuit for detecting 52 electrically connects these transmission ends groups 501, detects the characteristic frequency frequency that the instruction signal of this transmission ends group 501 is carried secretly, forms this controller 51 in the sequential end group 512 of this controller 51 again and starts the required frenquency signal of running.

This selected on-off circuit 53 has most switching circuits 531,532, divide into single satellite transmits switching circuit 531 that electrically connects single satellite link group 502 and the many satellite transmits switching circuit 532 that electrically connects many satellites link group 503, input that respectively should list satellite transmits switching circuit 531 electrically connects a wherein switch terminal group 513 of this controller 51, the input of this many satellite transmits switching circuit 532 is a plurality of switch terminal groups 513 that electrically connect this controller 51 with a plurality of switch module 532a, this switching circuit 531 respectively, 532 output electrically connects this transmission ends group 501, send trigger signals to this list satellite transmits switching circuit 531 when a wherein switch terminal group 513 of this controller 51 and promptly trigger corresponding this list satellite link group 502 that connects and electrically conduct with this transmission ends group 501, to send trigger signals to this many satellite transmits switching circuit 532 be pairing this switch module of triggering and conducting and this many satellites link group 503 and this transmission ends group 501 are electrically conducted when this switch terminal group 513 wherein.

Even if therefore this controller 51 needs in receiver 42 handled each satellite signals of corresponding respectively these the many satellite receivers 40 of induction of a plurality of these switch terminal groups 513, but right this many satellite transmits switching circuit 532 can make single these many satellites link group 503 correspondences by a plurality of these switch terminal groups 513 all triggering and conducting make these many satellite receiver 42 handled each satellite signals all can transfer to box 60 on the teaching machine to this transmission ends group 501 via single this many satellites link group 503.

Comprehensive as can be known above-mentioned, the satellite signals that the utility model provides this satellite receiving system 2 not only can receive a plurality of satellite simultaneously to be transmitted, there is the reception of a plurality of satellite channels to select for client, and many satellite receivers 40 can be set to save the hardware space of whole satellite receiving system, make the user-selected frequency range signal of getting each satellite of reception all can effectively export box 60 on this teaching machine to.

Only, the above only is a preferable possible embodiments of the present utility model, changes so use the equivalent structure that the utility model specification and claim scope do such as, ought to be included in the scope of the present utility model.

Claims

1, a kind of digital switching device of multiple satellite receiver has a transmission ends group and most link groups, has at least one many satellites link group in those link groups and is electrically connected at many satellite receivers, it is characterized in that, includes:

Above-mentioned many satellite receivers are in order to receive the different satellite signals from several adjacent satellite, become the intermediate frequency signal of different frequency range through down conversion process, the intermediate frequency signal that this many satellite transmits switching circuit is exported above-mentioned many satellite receivers transfers to this transmission ends group via this many satellites link group.

According to the described digital switching device of claim 1, it is characterized in that 2, this many satellite transmits switching circuit has most the switch modules that electrically connect mutually, respectively this switch module electrically connects this switch terminal group respectively.

According to the described digital switching device of claim 2, it is characterized in that 3, the trigger signals that this controller is sent is greater than the limit voltage quasi position of at least one diode.

4, according to the described digital switching device of claim 1, it is characterized in that having at least one single satellite transmits switching circuit in those switching circuits and electrically connect this switch terminal group.

5, according to the described digital switching device of claim 4, it is characterized in that, this many satellite transmits switching circuit includes the circuit identical with this list satellite transmits switching circuit and most switch modules, and respectively this switch module electrically connects this switch terminal group respectively.