KR20140103975A - Transmitter tracking of various standards - Google Patents

Abstract

A method for receiving a high frequency signal for mobile television broadcast comprising receiving a program to be broadcast by a first standard over a first receive path and broadcasting the same program to be broadcast to at least one other standard, And displaying the program to be broadcast on the program list and selecting the same from the program list, wherein the same program that can be received via the at least one other receiving path is displayed in an alternative list as an alternative program of the program to be broadcast And adjusts the first receive path to the other standard when a replacement program of the program that can be received in the at least one other standard is selected.

Description

{TRANSMITTER TRACKING OF VARIOUS STANDARDS}

The present invention relates to a method for receiving a high frequency signal, comprising the steps of receiving a program to be broadcast according to a feature of the preamble of claim 1 by means of a first standard via a first receiving path, To retrieve the same program on the desktop via at least one other receive path, to display the program to be broadcast on the program list, and to select from there.

BACKGROUND OF THE INVENTION [0002] It is known that recent receiving devices for receiving high frequency signals, which can be broadcast by in-vehicle televisions in today's world, can select a television program to broadcast. Depending on the selected program, the receiving device may receive a standard high frequency signal capable of receiving the selected program at the current location of the vehicle. When adjusted to the standard, the desired program can be broadcast in the vehicle. Programs to be broadcast are displayed in the program list. On the other hand, another program that can be received in addition to the program to be broadcasted at the current position of the vehicle by another receiving path can be retrieved from the desktop. These programs are also displayed in the program list.

The user can only select a program to view from the displayed program list. When the user changes from a currently broadcast program to another program, it is automatically adjusted by the receiving apparatus on the desktop according to another broadcast program. This method satisfactorily functions as long as the vehicle is positioned within the broadcasting range of the broadcasting station that transmits the program to be broadcast to the set standard. However, since the current position of the vehicle continuously changes when the vehicle is operating normally, a broadcast program that can be received immediately from the broadcasting station can not be received anymore. In this case, automatic switching is required, for example as is known from DE 10 2005 039 507 A1. According to the above described prior art, a desired program can be broadcast using a receive path and another receive path is used to retrieve a program from the desktop containing the same data content. If the quality of the broadcast program deteriorates according to a predetermined criterion, it is switched to another reception path retrieved from the desktop. Accordingly, the program to be broadcast can be broadcast with a higher quality than before.

However, the known method and the receiving apparatus are only appropriately configured so that switching from one program to another within the same standard is achieved. That is, the receiving apparatus is only configured to receive a program, for example, ZDF, to be analog / digital transmitted from the first broadcasting station. If the vehicle moves from a station to an area where the program is no longer dispatched to the same standard, the program ZDF can be received in the same standard but not in another standard.

The standard is characterized by having various receiving parameters such as modulation, coding, and an encoder used for audio and video. In the case of each standard, separate receiving hardware is typically required, which is generally provided with a receive path. This means that for each standard, each receive path (preceding, following) has independent hardware. At this time, each of the different receiving hardware is configured to form one receiving path.

The term "service tracking" is understood as a way of providing the user with the ability to track selected services in a wide range of locations. The term "service" is understood as a program (eg, ARD, ZDF in Germany, CCTV1, NHK etc. in China and Japan). To do this, the TV receiver changes its reception frequency and searches it to provide the best quality of program that is always set to the user. Such a method is known from DE 10 2005 039 507 A1 and is being implemented in a number of mobile receivers. However, this method is disadvantageous in that it is limited to one standard.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method for receiving a high frequency signal for improved mobile television reception compared to the prior art.

This problem is solved by the features of claim 1.

According to the present invention, a program that can be received via at least one other receive path is displayed in an alternative list as an alternative program of the program to be broadcast, and when an alternative program of the program that can be received in at least one other standard is selected The first receive path is adjusted to the other standard. According to the method according to the present invention and the receiving apparatus configured accordingly, a program to be selected and viewed by the user at a current specific position of the vehicle can be displayed on the program list. At the same time, the means for receiving, processing and displaying the first receive path, i. E. The signal, can be adjusted to display the program. At the same time, at the same time, the same program transmitted from the broadcasting station is similarly retrieved by another standard on the desktop using the second reception path configured appropriately. When such a program to be broadcast is identified as an alternative standard of another standard, such as a program being used now, the program is displayed in an alternative list. Thus, for example, when the tone of a television image and / or a receiver is bad, the best alternative may be selected and the preceding reception path automatically set and adjusted to the new standard.

Using station-wide broadband standards is also new. To do this, the TV receiver (ie, the entire hardware of each receive path) must be used and broadcast in a state capable of receiving the used standard or receivable standard.

Broadcast tracking through multiple standards can only be done when the TV receiver has at least two receive paths. The two paths are generally referred to as a preceding path and a following path. The currently set program (service) is broadcast through the preceding path. The program list remains in its most recent state via the following path. The above method is used for mobile purposes because the reception status of a program frequently changes.

Abbreviations and definitions:

Abbreviation / Definition Contents service Programs (for example, ZDF, CCTV1, NHK, etc.) Standard Standards vary from country to country (for example, DVB-T in Europe, DTMB and CMMB in China). These various standards differ from each other in modulation parameters, coding rates, encoders used for audio and video, and other parameters. For this reason, it is necessary to provide and use the hardware specific to the receiving module in each standard.

According to another embodiment of the present invention, a substitute list is assigned to each of the receivable programs, the substitute list including information about all programs available in parallel which can be received by the same or different standards that transmit the same content . By doing so, the vehicle operator can at any time have a list of programs with a receivable program and an alternative list that can use the receivable program, and can select a program from these lists.

When receiving areas overlap, the same programs are received very frequently many times. The programs are typically received on different channels (frequencies). The program is registered once more in the list of programs that the customer can view. For this reason, each program has an alternate list. The list includes all the same programs.

The alternate list is viewed to know which of the other channels (frequencies) the program having the same content is provided. At this time, it does not matter which standard the program relates to. However, it is important that all the programs have the same contents.

In another embodiment of the present invention, the alternate list of each of the programs is continually updated via the second receive path. This has the advantage that an alternative program of the currently broadcast program can be selectively used at any time.

For meaningful station tracking between different standards, each program (service) is assigned an alternate list. The list includes information on all the programs that transmit the same content and are available in parallel.

The alternate list is likewise updated continuously through the following path.

According to another embodiment of the present invention, when a new program is found by a second reception path through a desktop search, it is tested whether a program having the same content exists in a program list presently present, The newly found program is registered in the alternative list of the program list to which the program to be broadcast currently belongs. This has the advantage that the program to be broadcast can continue to be broadcast, and the same new additional program that can be sent and received in parallel with other standards can be added to the alternate list.

If a new service is found through a desktop search (subsequent path), the current program list is tested for a program with the same content. When a program with the same contents is provided in the program list, the newly found service is registered in the alternative list of the program.

In another embodiment of the present invention, the program currently being received is continuously monitored, and when a predetermined parameter exceeds a predetermined threshold according to a predetermined criterion, Switch to the same program.

There is a high possibility that services having the same contents are integrated. As a result, services with different standards are integrated if a specific list of standards is not provided.

These comparisons can only be used for station tracking within the same standard.

According to another embodiment of the present invention, a transition is made from a program having the same content received in the standard to a program having the same content received in another standard when the predetermined parameter exceeds a predetermined setting threshold.

The following comparisons are available for tracking stations of different standards:

· Service Name Comparison

· EPG information comparison

· Provided teletext information comparison

The user should continuously monitor the currently set service in order to use continuous images without defects as much as possible. Depending on the usage standard, the following predetermined parameters may be used:

· level

· Bit Error Rate

· Packet errors

The parameter is periodically evaluated. They will tell you if they can still receive the currently set program. The receiving process may be evaluated in terms of specific parameters. The program is forcibly switched to a program having the same content (substitute service) by a properly set threshold value.

The alternate service should also be periodically monitored on the desktop. In this regard, the same parameters can be used for monitoring the current service as well. At this time, a threshold to be exceeded is set to be used as a practical alternative service.

In order to switch to an alternative service, the following requirements must be met:

1. It is not necessary to receive the currently set service.

2. Depending on the desktop monitoring, there should be an alternative service selected as an alternative to use.

If the above two requirements are met, an internal fine tuning process is performed. At this time, it does not matter which standard the new service corresponds to.

Hereinafter, the present invention will be described in more detail with reference to the drawings.
1 is a list of programs that the user can view.
FIG. 2 is a diagram showing that a replacement list is created in the program of the program list of FIG. 1; FIG.
Figure 3 is a diagram showing that the programs in the alternate list can be received on the channel by different standards.
Figure 4 is a diagram showing that a program can be received by various standards by a desktop search through the receive path of the receiving device.
5 is a variation showing a program in a program list being received and broadcast on a channel by a standard.
FIG. 6 is a diagram showing a program in a program list being broadcasted on one channel to be broadcast on another channel.

Figure 1 shows a list of programs that the user can view. The program list is composed of, for example, four programs, and the program 2 is selected as a program to be broadcasted.

FIG. 2 is a list of programs identical to the program list of FIG. 1, and further that alternate lists are created in each of at least one program in the program list, preferably in the program list. In this embodiment, there are three different programs 2 having the same contents that can be received and broadcast in different standards (channels A, B and C) in the program 2 to be broadcast currently being received by the standard.

3 is a situation similar to FIG. 2, in which the first program 2 in the alternate list can be received on channel A by standard I and optionally the same program 2 is in standard II , And that the same program 2 may in some cases be received on channel C by standard (III). This means that both the program 2 currently registered in the program list and the program 2 registered in the substitute list can be received in different standards.

Figure 4 shows the same situation as Figures 2 and 3 except for the following differences. By a desktop search through the receive path of the receiving device, the program 2 currently being broadcast (in the program list) is not only received and broadcast by the standard, but also channels (A, B and C as well as being able to have the same content and be received on channel D by standard (I or II or III) or by another standard (IV). When this reception is found, the newly identified program (2) is registered in the alternative list. This is shown in FIG.

In Figures 5 and 6, it is shown that the program 2 in the program list is received and broadcast by the standard, which will not be described in further detail. Fig. 5 shows a variation in which the program (2) in the program list is received and broadcast on channel (A). That is, in this case, the program in the program list is additionally displayed in the replacement list. These variations can occur, but not necessarily. For example, if it is confirmed by the desktop search that the program 2 having the same contents that have been sent to the channel A so far can be received more easily via the channel C, 2 are received in the channel C and broadcast. This is shown in FIG. Alternatively, if the actual program to be broadcast that was displayed in the replacement list is included in the program list, the program disappears from the replacement list.

Claims (6)

A method for receiving a high frequency signal for mobile television broadcast comprising receiving a program to be broadcast by a first standard over a first receive path and broadcasting the same program to be broadcast to at least one other standard, And displaying the program to be broadcast on the program list and selecting the same from the program list, wherein the same program that can be received via the at least one other receiving path is displayed in an alternative list as an alternative program of the program to be broadcast And adjusts the first receive path to the other standard when a replacement program of the program that can be received in the at least one other standard is selected. 4. The method of claim 1, wherein an alternate list is assigned to each of the receivable programs, the alternate list including information about all programs available in parallel that can be received by the same or different standards that transmit the same content Lt; / RTI > 3. The method of claim 1 or 2, wherein the alternate list of each of the programs is updated via a second receive path. 4. The method according to any one of claims 1 to 3, wherein when a new program is found by a second search path through a desktop search, it is tested whether there is a program having the same content in a list of present programs, And the newly found program is registered in the substitute list of the program list to which the program to be broadcast currently belongs. 5. The method according to any one of claims 1 to 4, further comprising the steps of: continuously monitoring a program currently being received; and when a predetermined parameter exceeds a predetermined threshold according to a predetermined criterion, And switching to the same program received in the other standard. 6. The method according to any one of claims 1 to 5, wherein when the predetermined parameter exceeds a predetermined set threshold value, a program having the same content received in the standard is sent to a program having the same content received in another standard Characterized in that a conversion takes place.

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