JP2000138928A - Automatic identification system for environment of satellite broadcast receiving antenna - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically identify a plurality of community antenna types and which of the plurality of antenna types a particular antenna is. SOLUTION: The system is provided with a reception terminal 1 that receives plurality of broadcast radio waves of a satellite broadcast at respective specific frequencies under an antenna environment 2 consisting of plurality of kinds of antenna types, plurality of kinds of antenna types consist of plurality of single antenna types and plurality of plural-community antenna types. The reception terminal 1 consists of a 1st discrimination section 9 that discriminates presence of respective 1st data NIT of broadcast frequencies corresponding respectively to one-to-one to a plurality of the antenna types and of a 2nd discrimination section 9 that discriminates presence of 2nd data SDT of broadcast frequencies corresponding respectively to one-to-one to any community antenna type of the plural-community antenna types. The automatic identification should cope with an arbitrary environment, but a combination of time sequence in plurality of steps employing difference between a plurality of the kinds copes more properly with the diversified antenna environment. This system completely has provision for 'SKY PerfectTV(R)!'.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system and method for automatically identifying an antenna environment for receiving satellite broadcasts, which automatically identifies any one of a plurality of types of antenna environments for receiving satellite broadcasts. , An automatic identification system of a receiving antenna environment for “SKY PerfectTV!” For automatically identifying a direct connection type or a co-listening type from a CS antenna, or an automatic identification method thereof.

[0002]

2. Description of the Related Art Satellite broadcasting has been diversified in its antenna environment. The antenna environment is formed from multiple antenna types. The plural / antenna type includes a co-listening antenna and a plurality of direct connection types from a CS antenna (hereinafter, referred to as a single antenna type). It is preferable that the type of the actually installed antenna environment is automatically identified from the assumed plurality of antenna types.

[0003] An identification system for automatically distinguishing between a single antenna type and a multiple antenna type and a multiple antenna type is known from Japanese Patent Application Laid-Open No. H10-229557. Such known systems have not been able to automatically identify which of the multiple co-listening antenna type and the multiple antenna type.

[0004] It is desired to automatically identify which of a plurality of antenna types and a plurality of antenna types.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an antenna environment for receiving a satellite broadcast capable of automatically discriminating between a plurality of antenna types and a plurality of antenna types. An object of the present invention is to provide an automatic identification system or an automatic identification method thereof.

[0006]

Means for solving the problem Means for solving the problem are expressed in correspondence with the claims. In the following description, the numerals with () appearing in the claims will be described in detail later. It shows that it corresponds to the member, the process, and the operation of at least one of a plurality of embodiments, but the solution of the present invention is interpreted as being limited to the members of the embodiment indicated by those numerals. It is not a thing, but to make the correspondence clear.

An automatic identification system of an antenna environment for receiving a satellite broadcast according to the present invention includes an antenna environment (2) formed of a plurality of types of antenna types, and a plurality of broadcast waves of a satellite broadcast by the antenna environment (2). , And a plurality of antenna types (21-1 to 5, 22, 22,
23, 24-1 and 2) include a plurality of single antenna types (21-1 to 5) and a plurality of multiple / listening antenna types (22, 23, 24-1 and 2). ) Indicates a plurality of antenna types (21-1 to 5, 2).
2, 23, 24-1 and 2), a first discriminator (9) for discriminating presence / absence of first data (NIT) of each broadcast frequency corresponding to one-to-one, and a plurality of / shared listening The second for determining the presence / absence of the second data (SDT) of the broadcast frequency corresponding to the one co-listening antenna type (24-2) of the antenna types (22, 23, 24-1 and 2). A determination unit (9).

The antenna types include a single antenna type (21-1 to 5) and a co-listening antenna type (22, 23,
24-2). The automatic classification can be performed by using physical information such as SDT. The single antenna types (21-1 to 5) are classified into a plurality of types having a difference in reception frequency. The common antenna type (22,23,24-1,2) is SDT
The horizontal and vertical waves for NIT and the reception frequency for NIT are 2
The two types are classified into a first antenna type and a second antenna type. The first co-hearing antenna type is
Horizontal and vertical waves are further classified as species differences. The second co-hearing antenna type is further classified using the reception frequency as a species difference. Such classification and classification have the potential to be completely classified and classified based on two different species differences.
In particular, "SKY PerfectTV!" Is completely classified and classified.

An automatic identification method of an antenna environment for receiving satellite broadcasting according to the present invention is an automatic identification method of the above-described automatic identification system for an antenna environment for receiving satellite broadcasting, and includes a plurality of independent antenna types (21-1 to 21-1). 5) The plurality of first steps for determining the presence / absence of the first data (NIT) of the broadcast frequency corresponding to each of the above, and each of the plurality of common antenna types (22, 23, 24-1, 2). 1
Plural / second steps for judging the presence / absence of second data (NIT) of the broadcast frequency corresponding to one-to-one, and one co-listening of the plural / co-listening antenna types (22, 23, 24-1 and 2) The third step for specifying one (23) of the multiple / common listening antenna types (24-1, 2) by determining the presence or absence of third data (NIT) of the broadcast frequency corresponding to the antenna type. Become. Where the plural / noun is
Indicates that the noun is plural. First data and second
The data is the same as the species difference, and the first data and the third data are different as the species difference. In particular, the third data is physical information.

The first step is a step of setting the antenna environment to one of a plurality of independent types (21-1 to 5), and one-to-one for one of the plurality of independent types (21-1).
Setting a broadcast frequency corresponding to the reception frequency as a reception frequency. The second step is a step of setting the antenna environment to one of a plurality of co-listening types (22, 23, 24-1, 2). Shared listening type (22, 23, 24-
Setting the broadcast frequency corresponding to one of the two methods as a reception frequency to each one of the two, and the classification can be performed more strictly.

One of the plurality of second steps precedes the third step in time, and the other one of the plurality of second steps follows the third step in time. More preferably, one of the plurality of second steps precedes the first step in time. Such leading and trailing time enables appropriate adaptation to a specific broadcast environment.
The antenna environment of satellite broadcasting, which is limited by the frequency band and the number of geostationary satellites, is arbitrary. The automatic identification according to the present invention must cope with such an arbitrary environment, and cannot cope with any environment. However, the combination of the temporal order of the multiple steps using the multiple differences is better suited to various antenna environments. Such a method is described in "SKY PerfectTV!"
Fully correspond.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Corresponding to the drawings, an embodiment of an automatic antenna environment identification system for receiving a satellite broadcast according to the present invention includes a receiving terminal. As shown in FIG. 1, an antenna 2 is connected to
Connected through. The antenna 2 is “SKY P
erfecTV! The receiving terminal 1 has a function of a CS antenna that can receive satellite broadcast waves for “SKY PerfectTV!”. The apparatus includes a device for performing type identification of an antenna environment having an antenna function capable of receiving "".

The receiving terminal 1 is connected to an input device 4 for inputting a selective input signal required by a user. The receiving terminal 1 is connected to an output device 5 that receives the output signal processed by the receiving terminal. The output device 5 can reproduce information such as video, audio, and text. Any one of nine multiple antenna environment types, which are formed of an RF cable and described later, is fitted to the connection means 3.

The receiving terminal 1 includes a satellite data processing device 6, a tuner control device 7, a channel setting device 8, an automatic antenna determination device 9, and an audio / video information processing device 11.
The antenna automatic determination device 9 realizes identification of an antenna environment. The satellite data processing device 6 includes a channel setting device 8
Is connected to the tuner control device 7 via the.

The satellite data processing device 6 and the channel setting device 8 are bidirectionally connected. The satellite data processing device 6 is connected to an automatic antenna determination device 9, and the automatic antenna determination device 9 is connected to a channel setting device 8. The input device 4 is connected to the satellite data processing device 6. The audio / video information processing device 11 is connected to the output device 5.

FIG. 2 shows "SKY PerfectTV!"
2 shows a converted frequency band obtained by converting the satellite frequency of the satellite broadcasting for each antenna environment. The vertical axis indicates the antenna type, and the horizontal axis indicates the conversion frequency band. Nine antenna environment types include five multiple / single antenna types 21-1 to 5 and two co-listening types 22 and 2.
3 and two other co-listening antenna types 24-1 and 2--2.

The satellite frequency received by the single antenna type 21-1 is 10.678 GHz, and the single antenna type 2
The satellite frequency received by 1-2 is 10.873 GHz, and the satellite frequency received by single antenna type 21-3 is 1
0.99 GHz, single antenna type 21-4 receives satellite frequency of 11.2 GHz, single antenna type 2
The satellite frequency received by 1-5 is 11.3 GHz.

In correspondence with the flowcharts of FIGS. 3 and 4 showing the automatic discrimination operation of the antenna automatic discrimination device 9, in the embodiment of the antenna environment automatic discrimination system for receiving a satellite broadcast according to the embodiment of the present invention, the conversion frequency 2070-70. 2150
In order to confirm the presence or absence of a carrier of MHz (a medium signal for determining whether there is data), the antenna environment is set to the co-listening type 24-2, and the satellite frequency is set to 12.443.
The frequency is set to GHz (step S1). This satellite frequency 1
2.443 GHz is a typical satellite frequency whose conversion frequency is in a band between 2070 MHz and 2150 MHz.

In the next step S2, the NIT incorporated in the broadcast data is obtained. If the broadcast data is transmitted correctly, the NIT can be obtained. Step S3
, The antenna environment is either the co-listening type 24-1 or the co-listening type 24-2, as determined from the band shown in FIG. in this case,
The process proceeds to step S15 described later.

If the NIT cannot be obtained correctly in step S3, as shown in the band table of FIG. 2, the antenna type is any one of the single antenna types 21-1 to 21-5, or
There is a possibility that any of the co-listening types 22 and 23 will occur, and the step of the automatic antenna determination device 9 proceeds to step S4.

The bands 1895-2068 shown in FIG.
In order to confirm the presence or absence of a carrier in MHz, the automatic antenna determination device 9 sets the antenna environment to the co-listening type 23 and sets the satellite frequency to 12.733 GHz (step S4). This satellite frequency is 12.733 GHz.
Is one of the typical satellite frequencies whose conversion frequency is between 1895 and 2068 MHz. An attempt is made to acquire the NIT to confirm whether or not broadcast data has been transmitted (step S5).

When the NIT is obtained in step S6, as determined from the band in FIG. 2, the antenna environment at that time is such that the converter frequency is 10.678 GHz.
It may be either the single antenna type 21-1 or the co-listening type 22, and the process proceeds to step 9. If the NIT cannot be obtained correctly in step 6, the antenna environment at that time can be either the single antenna type 21-2 to 5 or the co-listening type 22, as determined from the band table of FIG. And go to step 7.

In step 7, 1875-1 shown in FIG.
In order to confirm whether or not there is a carrier at 895 MHz, the environment is set to the co-listening type 22 and the satellite frequency is set to 12.733 GHz. This satellite frequency of 12.7333 GHz has a conversion frequency of 1875
It is one of the representative satellite frequencies within １８1895 MHz. Confirm the presence or absence of NIT at that time (step S
8).

If the NIT can be obtained, the antenna environment at that time is determined to be the co-listening type 22, as determined from the band table of FIG. NIT
Is not obtained, the single antenna type 21-2 to 5
Or it cannot be received due to bad weather or the like, and it becomes unknown, and the process proceeds to step 20 in FIG.

In step 20 and subsequent steps, the converter frequency of the single antennas 21-2 to 21-5 is specified. In step 20, the conversion frequency is 948 to 1
The environment is set to the single antenna 21-5 in order to confirm the presence or absence of the 048 carrier, and the converter frequency is set to 11.3.
GHz and the satellite frequency to 12.288 GHz. This satellite frequency 12.888 GHz is one of the typical satellite frequencies whose conversion frequency is in the range of 948 to 1048 MHz.

Attempt to acquire the NIT at that time (step S
21) Check whether broadcast data is being sent. If the NIT can be acquired, the antenna environment at that time is determined to be the single antenna type 21-5, and the converter frequency is 11.3 GHz. If the NIT cannot be obtained, the converter frequency is other or unknown, and the process proceeds to step S23.

The converter frequency is a single antenna type 2
In order to determine whether or not the frequency is 1-4, ie, 11.2 GHz, the antenna environment is set to the single antenna type 21-4, the satellite frequency is set to 12.288 GHz, and the converter frequency is set to 11, 12 GHz. Conversion frequency is 1
The presence or absence of NIT of the carrier of 048 to 1258 MHz is confirmed (steps S24 and S25). If the NIT can be obtained, it is determined that the antenna environment is the single antenna type 24-2.

Similarly, in steps 26 to 28, it is determined whether the converter frequency is 10.99 GHz, and in steps 29 to 31, the converter frequency is 10.89 GHz.
In order to determine whether or not the frequency is 3 GHz, the NIT of the carrier whose conversion frequency is 1258 to 1375 MHz and the NIT of the carrier whose conversion frequency is 1375 to 1570 MHz are checked to determine their converter frequencies respectively. can do. If none of the above applies, the status is "unknown".

Next, in step S9, when the NIT is obtained in step 6, the process proceeds to step S9.
In order to confirm the presence or absence of the carrier of 5 to 1570 MHz, the antenna environment is set to the co-listening antenna type 23,
Set the satellite frequency to 12.268 GHz. This satellite frequency of 12.268 GHz has a conversion frequency of 138.
One of the typical satellite frequencies in the range of 5 to 1570 MHz
One. The presence or absence of the NIT at that time is confirmed (step S10).

If the NIT can be obtained, it is determined from the band table of FIG. 2 that the antenna environment at that time is the common antenna type 23. If the NIT cannot be obtained, the converter frequency is set to 10.678.
It is either the single antenna type 21-1 of GHz or unknown, and the process proceeds to step 12.

In step 12, the antenna environment is set to the single antenna type 21-1, and the satellite frequency is set to 12.71.
8GHz and the converter frequency is 10.678G
Set to Hz. If the satellite frequency is 12.718 GHz,
The conversion frequency is one of typical ones in the range of 1570 to 2068 MHz. The presence or absence of the NIT at that time is confirmed (step S13).

If it is determined in step 14 that the NIT can be obtained, the antenna environment is such that the converter frequency is 1
It is determined that the antenna type is the single antenna type 21-1 of 0.678 GHz, and it is unknown if the NIT cannot be obtained.

If the NIT can be obtained in step 3,
In the antenna environment setting in step 1, an SDT is acquired to confirm the type of polarization plane (vertical wave / horizontal wave) (step S15). If the SDT can be obtained, the plane of polarization of the data being broadcast is a horizontal wave, and the antenna environment is common, as shown in the band table of FIG. It is determined that it is the listening antenna type 24-2.

If the SDT cannot be obtained,
Proceed to step 17. In step 17, 2070 in FIG.
The antenna environment is set to the co-listening type 24-1 and the satellite frequency is set to 12.428 GHz in order to confirm the presence or absence of a carrier in the range of 2150 MHz. This satellite frequency of 12.428 GHz is converted to a conversion frequency of 2070 to 21.
This is a typical program frequency in 50 MHz. The NI
The presence or absence of T is confirmed (step S18).

If the NIT can be obtained, it is determined from the band table of FIG. 2 that the antenna environment is the co-listening antenna type 24-1, and if the NIT cannot be obtained, the antenna environment is unknown. is there.

FIG. 5 shows an embodiment in which the functional circuit of FIG. 1 is incorporated in a computer. This computer comprises a built-in receiving function unit 31 and a computer unit 32. The computer built-in receiving function unit 31 has exactly the same as the receiving terminal 1 shown in FIG.
Is identical to the receiving terminal 1.

The computer part 32 includes the input device 4 and the output device 5 shown in FIG. The input device 4
Is provided with an input control device 33 and input operation means such as a keyboard and a mouse 33. The output device 5 includes an output control device 35, a display, and an expression unit such as a speaker 36. Computer built-in receiving function unit 31
Is connected to an antenna 2 for receiving a broadcast radio wave of “SKY PerfectTV!”. Antenna 2
Are connected to the built-in computer receiving function unit 31 via the connection means 3 formed by an RF cable. Any one of the above-mentioned nine plural / antenna environment types is applied to the connection means 3. In this way, the reception of "SKY PerfectTV!" On the computer is realized.

[0038]

The system and method for automatically identifying an antenna environment for receiving a satellite broadcast according to the present invention have some problems in setting the type of the antenna environment, whether it is a co-listening type or a single antenna connection or the reception situation. Can be identified as unknown. In other words, when setting the antenna environment, the user can automatically identify and set the antenna environment without having to check whether the antenna is a co-hearing antenna or a single antenna and select and set them. The reason for this is that the identification system of the co-listening system has a new means for identifying whether or not it is a single antenna.

The system and method for automatically identifying an antenna environment for receiving satellite broadcasting according to the present invention can additionally identify the converter frequency of a single antenna when identifying the type of antenna environment. In other words, the user can automatically identify and set converter frequencies without having to check and set converter frequencies. The reason is that a means for identifying the converter frequency in the case of a single antenna is incorporated.

[Brief description of the drawings]

FIG. 1 is a functional circuit diagram showing an embodiment of an automatic identification system of an antenna environment for receiving a satellite broadcast according to the present invention.

FIG. 2 is a table showing bands in an antenna environment;

FIG. 3 is a flowchart showing an operation flow for automatic identification.

FIG. 4 is a flowchart showing a continuation of the chart.

FIG. 5 is a functional circuit diagram showing another embodiment of the system for automatically identifying an antenna environment for receiving satellite broadcasting according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Receiving terminal 2 ... Antenna 4 ... Input device 5 ... Output device 6 ... Satellite data processing device 8 ... Channel setting device 9 ... Automatic antenna determination device 11 ... Audio / video information processing device 21-1-5 ... Single antenna type 22 , 23 ... Antenna type 24-1-2: Other antenna type 31 ... Computer built-in receiving function part 32 ... Computer part 33 ... Input control device 34 ... Input operation means such as keyboard and mouse 35 ... Output control Apparatus 36 ... Expression means such as display and speaker

 ────────────────────────────────────────────────── ─── Continued on the front page F term (reference) 5C025 AA21 BA01 BA11 BA14 BA25 BA28 DA04 5C062 AA01 AC41 AE05 5C064 DA02 DA08 5K062 AB13 AC01

Claims (9)

[Claims] 1. An antenna environment formed from a plurality of types of antennas, and a receiving terminal for receiving a plurality of satellite broadcast waves at respective unique frequencies according to the antenna environment. The antenna type includes a multiple / single antenna type and a multiple / antenna antenna type, and the receiving terminal determines whether there is first data of each of the broadcast frequencies corresponding to the multiple / antenna types on a one-to-one basis. A first determining unit for determining, and a second determining unit for determining the presence or absence of second data of a broadcast frequency corresponding to one of the plurality of common antenna types in one of the plurality of common antenna types. Automatic identification system for antenna environment receiving satellite broadcasting. 2. The system according to claim 1, wherein the second data is physical information about a horizontal wave or a vertical wave. 3. The antenna environment according to claim 2, wherein the antenna environment is a unique name “SKY Perf”.
ecTV! An automatic identification system for an antenna environment for receiving satellite broadcasting, characterized in that the antenna is a receiving antenna. 4. An automatic identification method for an automatic identification system for an antenna environment for receiving a satellite broadcast according to claim 1, wherein the presence / absence of first data of a broadcast frequency corresponding to each of the plurality of independent antenna types is determined. A plurality of first steps; a plurality of second steps for determining the presence or absence of second data of a broadcast frequency corresponding to each of the plurality of common antenna types on a one-to-one basis; Receiving a satellite broadcast comprising: a third step of specifying said one of said plurality of common antenna types by determining the presence or absence of third data of a broadcast frequency corresponding to one of the common antenna types. Automatic identification of the antenna environment to be used. 5. The method according to claim 4, wherein the third data is physical information about whether a horizontal wave or a vertical wave. 6. The plurality of / independent types according to claim 5, wherein the plurality / first steps comprise: setting the antenna environment to one of the plurality / independent types; Setting the corresponding broadcast frequency as a reception frequency, wherein the plurality of / second steps include: setting the antenna environment to one of the plurality / common listening types; and the plurality / common listening. Setting the broadcast frequency corresponding to the one of the types as a reception frequency as a reception frequency, respectively. 7. The method according to claim 6, wherein one of the plurality of second steps precedes the third step in time, and the other one of the plurality of second steps precedes the third step. An automatic identification method of an antenna environment for receiving a satellite broadcast, which is characterized by following in time. 8. The method according to claim 7, wherein the one of the plurality of second steps precedes the first step in time. 9. The antenna environment according to claim 8, wherein the antenna environment is a unique name “SKY Perf”.
ecTV! "A method for automatically identifying an antenna environment for receiving satellite broadcasts.