JP2015510347A - Transmitter tracking between different standards - Google Patents

Abstract

A method for receiving a high-frequency signal for television broadcasting for a mobile body, wherein a program to be broadcast is received by a first receiving path using a first standard, and at least one separate signal is received in the background. In the method of searching for the same program to be broadcast, which can be received by at least one other standard, and indicating and selecting the program to be broadcast in a program list, the at least one other The same program that can be received by the receiving path is shown in the option list as an option for the program to be broadcast, and when the program option that can be received on the at least one other standard is selected, the first Match one reception path to this other standard.

Description

  The present invention relates to a method for receiving a high frequency signal. Here, the program to be broadcast is received using the first standard by the first receiving path, and can be received by at least one standard in the background by at least one other receiving path. The same program to be broadcast is searched. Here, the program to be broadcast is shown and selected in the program list. This is described in the superordinate concept of claim 1.

  In recent receivers for receiving high-frequency signals broadcast by a television in a vehicle, it is well known that a television program to be broadcast can be selected by the receiver. Depending on the selected program, the receiving device receives a high-frequency signal of the above-mentioned standard, and this selected program is received at the current position of the vehicle by this high-frequency signal. If this standard is met, this desired program is broadcast in the car. This program to be broadcast is shown in the program list. In the meantime, in the background, at the current position of the vehicle, in addition to this program to be broadcast, further programs that can be received are searched by another receiving path. These programs are also shown in the program list.

  Here, the user can select a program he / she wants to see from the displayed program list. If the user changes the currently broadcast program to another program, it is automatically adjusted in the background by the receiving device to this other program to be broadcast. This method works without problems if the vehicle is within the reach of a transmitting station that radiates in this standard combined with the program to be broadcast. However, during normal operation of the vehicle, the current position of the vehicle changes, so the following happens constantly. That is, a program to be broadcast that was barely receivable with this matched standard at this transmitting station will no longer be receivable. In such a case, it is necessary to perform automatic switching, as is known, for example, from DE102005039507A1. This prior art document describes that a desired program is broadcast by a certain receiving path, and a program having the same data content is searched for in another receiving path in the background. If it becomes difficult to see the currently broadcast program on the basis of a predetermined criterion, it is switched to another reception path searched in the background. As a result, the program to be broadcast is broadcast with better quality than the previous broadcast.

  Here, however, this known method and its receiving device are only suitable for and only configured to switch from one program to another within the same standard. That is, the receiving device is configured only to receive, for example, the program ZDF broadcasted in analog / digital from the first transmitting station. If the vehicle moves to an area where this program from this transmitting station is no longer broadcast in the same standard, this program ZDF is received in the same standard but not in another standard.

  The standard has the following characteristics. That is, it has the characteristic that it has various reception parameters, such as codes used for modulation, coding, audio and video. Usually, independent receiving hardware is required for each standard. Together, they form a single receive path. This means the following: That is, each receiving path (front surface, background) has independent hardware for each standard. The various receiving hardware is combined into one receiving path.

  The term “service following” refers to a method that allows a user to track a selected service, even if the location is changed. The term “service” refers to a program (for example, ARD, ZDF, etc. in Germany, CCTV1, NHK, etc. in China, Japan). For this purpose, the TV receiver naturally switches the reception frequency and always tries to provide the user with an adjusted program with the best quality. This method is described in DE102005039507A1 and is implemented in many mobile receivers. However, this method is limited to one standard.

  An object of the present invention is to provide a method for receiving a high-frequency signal for television reception for mobile objects, which is improved as compared with the prior art.

  The above-described problem is solved by the configuration of the characterizing portion of claim 1.

  In the present invention, programs that can be received using at least one other receiving path are shown in the option list as options for the program to be broadcast. Here, when an option of a program that can be received by at least one other standard is selected, the first reception path is adjusted to this other standard. Thus, by the method of the invention and the correspondingly configured receiving device, it is possible at the current position of the vehicle to first indicate in the program list the program that the user wishes to watch. At the same time, the first receiving path, ie its means for receiving, processing and displaying signals, is adapted to this program and displayed. At the same time, a search for the same program radiated from the transmitting station with different standards is carried out in the background, with a correspondingly configured second receiving path. If such a program to be broadcast is identified as being used now as another standard option, this is indicated in the option list. In this way, for example, the best option is selected when the television picture and / or receiver sound deteriorates, and the front reception path is automatically adapted to the new standard.

  That is, it is new that transmitter tracking between standards is used. To this end, the TV receiver (i.e. the overall hardware of each receiving path) must be able to receive, evaluate and broadcast standards that are used or receivable.

  Transmitter tracking across multiple standards is only possible if the TV receiver has at least two reception paths. These two paths are usually referred to as the front road and the background road. The currently matched program (service) is broadcast via the front road. Through the background path, the program list is permanently kept up to date. This method is for mobile use. This is because the program reception status always changes.

Abbreviations and definitions:

  In a development of the invention, a choice list is stored for each receivable program. Here, the option list includes information on all programs that can be supplied in parallel and that can be received using the same or different standards, broadcasting the same content. As a result, the vehicle user is always provided with a program list in which receivable programs are described and a list of options for each of the receivable programs, from which the user can make a selection.

  When the reception area is superimposed, the same program may be frequently received multiple times. These are usually on separate channels (frequencies). However, this program is only entered once in the user visible program list. Therefore, each program has one option list. Within this list, all the same programs are grouped together.

  Based on this choice list, it is always known on which other channel (frequency) there is a program with the same content. Here, it does not matter to which standard these programs belong. What is important is that all programs have the same content.

  In a development of the invention, the choice list for each program is continuously updated via the second receiving path. This has the advantage that the choice for the currently broadcast program is always available for selection.

  A list of choices is stored in each program (service) in order to implement reasonable transmission location tracking between different standards. This list contains information about all programs that can be provided in parallel that broadcast the same content.

  This list of choices is also continuously updated over the background path.

  In the development of the present invention, when a new program is found using the second reception path through the background search, it is present whether or not a program having the same content already exists. If there is already a program with the same content in the program list that is examined in the program list, this newly found program is entered in the choice list of the program list to which the program to be broadcast now belongs . This has the following advantages. That is, the program to be broadcast continuously becomes available for broadcasting, and in parallel, the same new one should be added, but the program broadcast and received by another standard is included in the option list. The advantage is that it is added.

  When a new service is found via a background search (background path), it is checked whether a program with the same content already exists in the currently existing program list. If there is a program with the same content in the program list, this newly found service is entered in the choice list for this program.

  In a development of the invention, the currently received program is continuously monitored and, based on a pre-set criteria, if a pre-set parameter exceeds a set threshold, it is received in a standard. The program to be broadcast is switched to the same program received in another standard.

  There are several ways to combine multiple services with the same content. By combining multiple services from different standards, comparing standards-specific tables is eliminated.

  This comparison is only used when tracking transmitters within the same standard.

  In a development of the invention, when a pre-set parameter exceeds a pre-set adjusted threshold, a program with the same content received in one standard and received in another standard is received. Is switched to the program to be executed.

Subsequent comparisons are used when tracking transmitters between different standards.
・ Comparison of service names ・ Comparison of EPG information ・ Comparison of existing teletext information

In order to be able to provide users with as consistent and error-free images as possible, currently tailored services must be continuously monitored. Depending on the standard being used, certain parameters can be used.
・ Level ・ Bit error rate ・ Packet error

  These parameters are evaluated periodically. These give an indication as to whether the currently tuned program should still be received. The course of reception is also evaluated by parameter specific calculations. Based on the correctly set threshold, in this case, switching to a program (alternative service) having the same content is forced.

  Alternative service monitoring must also be performed periodically in the background. Here, the same parameters are used here as when monitoring the current service. Again, a threshold is set that must be exceeded in order to use this service as an actual alternative.

The following conditions must be met in order to perform the option switch:
1. 1. The currently combined service should no longer be received. There must be an alternative service selected as an option to be used based on background monitoring.

  When two conditions are met, an internal tuning change process is started. Here, it is not important to which standard this new service belongs.

  Hereinafter, the present invention will be described in more detail based on the drawings.

List of programs that users can see List of programs that users can see List of programs that users can see List of programs that users can see List of programs that users can see List of programs that users can see

  FIG. 1 shows a program list that a user can see. This consists of four programs, for example. Here, the program 2 is selected as a program to be broadcast.

  FIG. 2 shows the same program list as FIG. It can further be seen here that a choice list exists and exists for at least one program in this program list, preferably for each program in the program list. In this example, the following can be understood. That is, for the program 2 to be broadcast that is currently being received by a certain standard, the same content is received but broadcasted by another standard (channels A, B and C) It can be seen that there is a further program 2.

  FIG. 3 shows the same situation as FIG. However, in the list of choices, the first program 2 can be received on channel A according to standard I, while the relatively similar program 2 can be received on channel B according to standard II. The same program 2 is shown to be receivable on channel C according to standard III. This means the following: That is, it means that the program 2 entered in the program list and currently broadcasted and the program 2 entered in the option list can all be received by different standards.

  FIG. 4 shows the same situation as FIGS. The differences are as follows. The following is confirmed by background search using the receiving path of the receiving device. That is, program 2 cannot be received and broadcast only by the currently received standard (in the program list), and is not broadcast only on channels A, B, and C in standards I, II, and III. Rather, it has the same content and is received on channel D using standard I, II or III or another standard IV. If this is found, this newly requested program 2 is entered in the choice list. This is illustrated in FIG.

  5 and 6 show the following. That is, it is indicated that the program 2 in the program list is received according to a standard not described in detail and is currently being broadcast. This is one form, where FIG. 5 shows the form in which program 2 in the program list is received and broadcast on channel A. That is, in this case, the program in the program list additionally appears in the option list and is displayed. This can happen, but not necessarily. Here, based on the background search, for example, when it is confirmed that the program 2 that has been broadcast on the channel A so far can be received with the same content better through the channel C, this program 2 is accepted in the program list by this program 2 on channel C and broadcast. This is illustrated in FIG. As an alternative to this, the program that should be broadcast at the present time, shown in the option list, can be put in the program list and deleted from the option list.

Claims (6)

A high-frequency signal receiving method for television broadcasting for mobiles,
Receiving a program to be broadcast using a first standard by means of a first receiving channel and receiving at least one other same program to be broadcast that can be received in the background by at least one other standard; Search by receiving path,
In a method for indicating and selecting a program to be broadcast in a program list,
The same program that can be received by the at least one other receiving path is shown in the options list as an option for the program to be broadcast,
When an option of the program that can be received on the at least one other standard is selected, the first reception path is adjusted to the other standard.
A high-frequency signal receiving method for television broadcasting for mobile objects. Store one choice list for each receivable program,
The method of claim 1, wherein the choice list includes information about all programs provided in parallel that can be received using the same or different standards.   The method according to claim 1 or 2, wherein the list of choices of each program is continuously updated via the second reception path. When a new program is found through a background search using the second reception path, it checks whether a program having the same content already exists in the currently existing program list,
4. If the program having the same content already exists in the program list, the newly found program is entered in the choice list of the program list to which the program to be broadcasted currently belongs. The method according to any one of the above.   Broadcasts received in a standard based on a pre-settable criterion when the currently received program is continuously monitored and the pre-settable parameter exceeds a pre-set threshold The method according to claim 1, wherein a switch from a program to be performed to the same program received according to another standard is performed.   When the pre-settable parameter exceeds a pre-set adjusted threshold, from a program with the same content received in one standard to a program with the same content received in another standard The method according to claim 1, wherein the switching is performed.

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