阅读说明：本技术 多台卫星机顶盒共用一个卫星天线的系统及方法 (System and method for sharing one satellite antenna by multiple satellite set top boxes ) 是由 王硕 徐天保 宋浩 周彩霞 张波 张丽丽 于 2021-08-20 设计创作，主要内容包括：本发明公开了一种多台卫星机顶盒共用一个卫星天线的系统,包括一个卫星天线和多台卫星机顶盒,卫星天线上安装有双输出高频头Signal1和Signal2,每个高频头分别连接一个功分器,多台卫星机顶盒均配置有两个Tuner,Tuner1和Tuner2,Signal1经过功分器后接到每一台卫星机顶盒的Tuner1,Signal2经过功分器后接到每一台卫星机顶盒的Tuner2,且连接Signal1的Tuner1锁定其极化方式为左旋的频点,连接Signal2的Tuner2锁定其极化方式为右旋的频点；本发明还提供一种多台卫星机顶盒共用一个卫星天线的方法；本发明解决了多台卫星机顶盒共用一个卫星天线的问题。(The invention discloses a system for sharing a satellite antenna by a plurality of satellite set-top boxes, which comprises a satellite antenna and a plurality of satellite set-top boxes, wherein the satellite antenna is provided with a double-output Tuner Signal1 and a Signal2, each Tuner is respectively connected with a power divider, the satellite set-top boxes are respectively provided with two tuners, Tuner1 and Tuner2, Signal1 is connected to Tuner1 of each satellite set-top box after passing through the power divider, Signal2 is connected to Tuner2 of each satellite set-top box after passing through the power divider, Tuner1 connected with Signal1 locks a frequency point of which the polarization mode is left-handed, and Tuner2 connected with Signal2 locks a frequency point of which the polarization mode is right-handed; the invention also provides a method for sharing one satellite antenna by a plurality of satellite set-top boxes; the invention solves the problem that a plurality of satellite set-top boxes share one satellite antenna.)

1. A system for sharing a satellite antenna by a plurality of satellite set-top boxes is characterized by comprising a satellite antenna and a plurality of satellite set-top boxes, wherein double-output tuners are mounted on the satellite antenna and are respectively named as Signal1 and Signal2, each Tuner is respectively connected with a power divider, the satellite set-top boxes are respectively provided with two tuners which are respectively named as Tuner1 and Tuner2, one Tuner Signal1 of the double-output tuners is connected to a Tuner1 of each satellite set-top box after passing through the power divider, the other Tuner Signal2 is connected to a Tuner2 of each satellite set-top box after passing through the power divider, Tuner1 of all satellite set-top boxes connected with the tuners Signal1 is locked, the polarization mode of the Tuner Signal is in a left-handed mode, and Tuner2 of all satellite set-top boxes connected with the Tuner Signal2 is locked, and the polarization mode of the Tuner Signal is in a right-handed mode.

2. The system of claim 1, wherein the power divider is a sixteen-point passive power divider.

3. A method for sharing a satellite antenna by a plurality of satellite set-top boxes, wherein the system for sharing a satellite antenna by a plurality of satellite set-top boxes according to claim 1 or 2 is adopted, the method comprising:

when the program is automatically searched, acquiring all frequency point information described by an NIT (network information technology) table according to a preset main frequency point, and then respectively locking the frequency point and acquiring the program information description under the frequency point according to the parameters of each frequency point information; when the main frequency point information is obtained, firstly, the polarization mode of the main frequency point is judged, when the polarization mode is left-handed, Tuner1 is used for obtaining RF information, and when the polarization mode is right-handed, Tuner2 is used for obtaining RF information; then obtaining an NIT table and analyzing program information of all frequency points, analyzing the polarization mode of each frequency point, using Tuner1 when the polarization mode is left-handed rotation and using Tuner2 when the polarization mode is right-handed rotation until all automatic searches are completed;

when programs are searched manually, the frequency point is locked through the frequency point information selected or input by a user, and the program information under the frequency point is acquired; after the information of the frequency point is input, analyzing the polarization mode of the frequency point, acquiring RF information by using Tuner1 when the polarization mode is left-handed rotation, acquiring RF information by using Tuner2 when the polarization mode is right-handed rotation, and finishing manual program search;

when the program is played as a live program, according to the program selected by a user to be played, the frequency point information of the program is retrieved, when the polarization mode is left-handed, the Tuner1 is used for frequency locking, when the polarization mode is right-handed, the Tuner2 is used for frequency locking, and the Ts stream information of the current program is obtained and played.

Technical Field

The invention relates to the technical field of satellite communication, in particular to a system and a method for sharing a satellite antenna by a plurality of satellite set top boxes.

Background

Watching live television programs is a necessary entertainment requirement in daily life of people. However, in areas where IP networks are not developed or cable television signals cannot be laid, such as schools, hotels, and hotels built in remote mountain areas, watching of live television programs can be generally realized only by installing a satellite set-top box, configuring a satellite receiving cable and a tuner, and receiving satellite transmission.

At present, a satellite set-top box is installed, and a satellite antenna and a tuner are needed to be installed at the same time. In practical use, many users do not have enough space for installing a plurality of satellite antennas, and hope that a satellite antenna can be commonly used by a plurality of satellite set-top boxes.

Satellite television programs are distributed on a plurality of frequency points, and when the satellite set top box locks the frequency points, parameters such as frequency, symbol rate and the like need to be set, and the polarization direction (such as left rotation and right rotation) of an antenna needs to be set. When a plurality of satellite set top boxes share one satellite antenna, one satellite set top box locks a certain frequency point, and the polarization direction of the locked frequency point of other satellite set top boxes is different from the polarization direction locked by the satellite set top box, so that the frequency locking of other satellite set top boxes fails, the program searching fails, and the live program cannot be watched.

Disclosure of Invention

In order to solve the problems in the prior art, the invention aims to provide a system and a method for sharing one satellite antenna by a plurality of satellite set top boxes.

In order to achieve the purpose, the invention adopts the technical scheme that: a system for sharing a satellite antenna by a plurality of satellite set-top boxes comprises a satellite antenna and a plurality of satellite set-top boxes, wherein double-output tuners are installed on the satellite antenna and are respectively named as Signal1 and Signal2, each Tuner is respectively connected with a power divider, the satellite set-top boxes are respectively provided with two tuners which are respectively named as Tuner1 and Tuner2, one Tuner Signal1 of the double-output tuners is connected to Tuner1 of each satellite set-top box after passing through the power divider, the other Tuner Signal2 is connected to Tuner2 of each satellite set-top box after passing through the power divider, Tuner1 of all satellite set-top boxes connected with the Tuner Signal1 locks a frequency point of which the polarization mode is left-handed, and Tuner2 of all satellite set-top boxes connected with the Tuner Signal2 locks a frequency point of which the polarization mode is right-handed.

As a further improvement of the present invention, the power divider is a sixteen-minute passive power divider.

The invention also provides a method for sharing one satellite antenna by a plurality of satellite set top boxes, which adopts the system for sharing one satellite antenna by a plurality of satellite set top boxes, and the method comprises the following steps:

when the program is automatically searched, acquiring all frequency point information described by an NIT (network information technology) table according to a preset main frequency point, and then respectively locking the frequency point and acquiring the program information description under the frequency point according to the parameters of each frequency point information; when the main frequency point information is obtained, firstly, the polarization mode of the main frequency point is judged, when the polarization mode is left-handed, Tuner1 is used for obtaining RF information, and when the polarization mode is right-handed, Tuner2 is used for obtaining RF information; then obtaining an NIT table and analyzing program information of all frequency points, analyzing the polarization mode of each frequency point, using Tuner1 when the polarization mode is left-handed rotation and using Tuner2 when the polarization mode is right-handed rotation until all automatic searches are completed;

when programs are searched manually, the frequency point is locked through the frequency point information selected or input by a user, and the program information under the frequency point is acquired; after the information of the frequency point is input, analyzing the polarization mode of the frequency point, acquiring RF information by using Tuner1 when the polarization mode is left-handed rotation, acquiring RF information by using Tuner2 when the polarization mode is right-handed rotation, and finishing manual program search;

when the program is played as a live program, according to the program selected by a user to be played, the frequency point information of the program is retrieved, when the polarization mode is left-handed, the Tuner1 is used for frequency locking, when the polarization mode is right-handed, the Tuner2 is used for frequency locking, and the Ts stream information of the current program is obtained and played.

The invention has the beneficial effects that:

the invention realizes that a plurality of satellite set-top boxes can share one satellite antenna, greatly reduces the purchase cost of products, reduces the installation time of equipment, reduces the occupied space of the equipment and is easy to popularize the products for scenes such as schools, hotels, field training and the like in remote mountainous areas.

Drawings

FIG. 1 is a schematic diagram of a system networking architecture according to an embodiment of the present invention;

FIG. 2 is a logic diagram of an embodiment of the present invention for automatic program search;

FIG. 3 is a logic diagram of a manual program search according to an embodiment of the present invention;

fig. 4 is a logic block diagram of playing a live program in the embodiment of the present invention.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Examples

As shown in fig. 1, the present embodiment is based on the following application scenarios in a system in which a plurality of satellite set-top boxes share a satellite antenna: receiving a nine-satellite (all the polarization directions of the frequency points are equally divided into a left-hand rotation and a right-hand rotation), installing double-output tuners on the satellite antenna, respectively connecting each Tuner with a power divider, and configuring two tuners on the satellite set-top box.

The power divider can adopt a passive power divider with low cost. The received signal strength of the satellite antenna is about 70dB generally, the access loss of the two-branch power divider is not more than 4dB, the access loss of the four-branch power divider is not more than 7dB, the access loss of the eight-branch power divider is not more than 12dB, the access loss of the sixteen-branch power divider is not more than 16dB, and the input signal strength of the satellite set top box in normal use is 40dB, so that the sixteen-branch passive power divider can be adopted, and 16 satellite set top boxes can share one satellite antenna.

When networking is carried out, the two power dividers are respectively connected with two ports of a Tuner of the satellite antenna, two tuners of the satellite set-top boxes are respectively connected into the specified power dividers, the plurality of satellite set-top boxes are connected in the same mode, and then the tuners connected into the two power dividers are respectively locked on programs with frequency points of left rotation and right rotation through the software capability of the satellite set-top boxes. Finally, the scheme that a plurality of satellite set top boxes commonly use one satellite antenna is realized.

The embodiment upgrades the single Tuner configuration of the traditional satellite set-top box into the double Tuner configuration, and the cost for adding one Tuner is extremely low.

Two Tuner are arranged at the top box end of the satellite set, wherein the two Tuner are respectively named as Tuner1 and Tuner2, and the two output high-frequency heads of the satellite antenna are named as Signal1 and Signal 2. During networking, Signal1 is connected to Tuner1 of the set-top box after passing through the Signal power divider, Signal2 is connected to Tuner2 of the satellite set-top box after passing through the Signal power divider, all tuners 1 connected with Signal1 lock the frequency point with the polarization mode of left-handed rotation, and all tuners 2 connected with Signal2 lock the frequency point with the polarization mode of right-handed rotation.

A traditional single Tuner satellite set-top box uses a satellite antenna, and is connected and networked through a single Tuner and a power divider. When a plurality of satellite set top boxes search programs or watch live programs at the same time, the situation that the frequency points of the left-handed polarization mode and the right-handed polarization mode are locked at the same time can occur, and then the problems that the program search fails and the live programs cannot be watched are caused.

A satellite set-top box in a dual Tuner configuration is connected in the manner shown in fig. 1. The use of two Tuner at the top box end of the satellite set is managed and controlled through the design on software, so that the Tuner1 only locks the frequency point of the left-handed polarization mode, the Tuner2 only locks the frequency point of the right-handed polarization mode, and the problems that the program search fails and the live program cannot be watched due to different polarization modes of the locked frequency points when a plurality of boxes are simultaneously locked are avoided.

The embodiment also provides a method for sharing one satellite antenna by a plurality of satellite set top boxes, and the functions related to locking the satellite frequency point in the satellite set top box software mainly comprise automatic program search, manual program search and live program playing.

(1) As shown in fig. 2, the automatic program search is to acquire all frequency point information described in the nit table according to a preset main frequency point, then lock the frequency point according to parameters of each frequency point information, and acquire a program information description under the frequency point. When acquiring the main frequency point information, the software firstly judges the polarization mode of the main frequency point, and acquires the RF information by using Tuner1 when the polarization mode is left-handed and acquires the RF information by using Tuner2 when the polarization mode is right-handed. And then obtaining an NIT table and analyzing the program information of all frequency points, automatically analyzing the polarization mode of each frequency point by software, and using Tuner1 when the polarization mode is left-handed rotation and Tuner2 when the polarization mode is right-handed rotation until all automatic searches are completed.

(2) As shown in fig. 3, the manual program search is to lock the frequency point through the frequency point information selected or input by the user, and acquire the program information at the frequency point. After the information of the frequency point is input, the software automatically analyzes the polarization mode of the frequency point, acquires the RF information by using Tuner1 when the polarization mode is left-handed rotation, acquires the RF information by using Tuner2 when the polarization mode is right-handed rotation, and finishes the manual program search.

(3) As shown in fig. 4, the live program playing function is to automatically search the frequency point information of the program according to the program selected by the user, and use Tuner1 to lock the frequency when the polarization mode is left-handed rotation and Tuner2 to lock the frequency when the polarization mode is right-handed rotation, so as to obtain the Ts stream information of the current program and play the current program.

The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.