JPH06141250A - Setting system of tuning channel - Google Patents

Abstract

(57) [Summary] [Object] The present invention relates to a channel selection channel setting method,
It is an object of the present invention to be able to rearrange the channel selection information already set in a plurality of preset channels in an arbitrary order, simplify the rearrangement work, and shorten the time. [Configuration] A non-volatile memory (24) stores tuning information for tuning each of a plurality of preset channels.
The conversion table (23) stores a plurality of pointers that indicate the tuning information storage addresses of the nonvolatile memory corresponding to the preset channels. A channel selection channel setting method in which channel selection information of each preset channel is rearranged by changing each pointer of the conversion table.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a channel selection channel setting method, and more particularly to a channel selection channel setting method for arbitrarily changing and setting a preset channel to be selected.

[0002]

2. Description of the Related Art Conventionally, frequency synthesizers (F
In a television receiver (TV) and a video tape recorder (VTR) of the (syn) system, frequency data registered in each of a plurality of preset channels is rearranged so that frequencies or broadcasting station codes are arranged in, for example, an ascending order, and
Frequency data of multiple preset channels of VTR
There is a method of registering in the preset channel of the VTR so that the selection order of a plurality of preset channels of the VTR matches the TV. Further, in these Fsyn systems, the registered contents of each preset channel can be displayed on-screen by characters.

In addition, a conventional voltage synthesizer (V
In the syn) type TV and VTR, the tuning voltage data registered in each of the plurality of preset channels may be canceled and added. This V
In the syn type, the contents of each preset channel can be displayed on-screen using the number of points or the length of the bar as a guide.

Further, conventionally, as described in Japanese Patent Application Laid-Open No. 61-50476, a channel code table is prepared in advance in the ROM of the CATV terminal, and only the code arrangement of this channel code table is stored in the RAM, and at the time of channel selection. There is a method in which the arrangement of the receiving channels can be rewritten by obtaining the actual tuning data from the ROM by designating the code from the code arrangement of the RAM.

[0005]

In the conventional Fsyn system, for example, 8-bit frequency data is stored in an address corresponding to each preset channel on the nonvolatile memory. Therefore, if you try to rearrange the broadcasting programs selected on each preset channel in a predetermined order, you must reset the frequency data individually for each preset channel and change the above while selecting a specific broadcasting program. I couldn't do it. Conventional Vsy
In the n method, since tuning voltage data is stored in each preset channel, the number of data bits per preset channel is large, for example, 20 bits, and even if points are displayed on-screen, it is not possible to know the tuning content. The broadcast programs selected on each preset channel have not been rearranged in a predetermined order.

Further, in the one disclosed in Japanese Patent Laid-Open No. 61-50476, when the code is arranged from the 1st address to the nth address of the RAM, the code is arranged at the i-th (1.ltoreq.i.ltoreq.n) 1st position. In the case of adding one code, the codes from the i-th address to the n + 1-th address of the RAM must be sequentially rewritten, and there is a problem that it takes a lot of time to rearrange the channel selection order.

The present invention has been made in view of the above points,
Channel selection information that has already been set for multiple preset channels can be rearranged in any order, simplifies the rearrangement work, and provides a channel selection channel setting method that can shorten the time. To aim.

[0008]

According to the channel selection channel setting method of the present invention, a nonvolatile memory for storing channel selection information for selecting each of a plurality of preset channels and the above-mentioned corresponding to each of the plurality of preset channels are provided. It has a conversion table storing a plurality of pointers indicating the tuning information storage address of the nonvolatile memory, and the tuning information of each preset channel is rearranged by changing each pointer of the conversion table.

[0009]

In the present invention, the channel selection information of each preset channel can be rearranged by rearranging the pointer corresponding to each preset channel in the conversion table, that is, the channel selection information storage address of the non-volatile memory. Since the storage address of the station information has a smaller number of bits than the channel selection information itself, it does not take time and effort to rearrange.

[0010]

1 is a block diagram of an embodiment of a television receiver to which the system of the present invention is applied. In the figure, the high frequency signal received by the antenna 10 is supplied to the channel selection circuit 11, where a desired broadcast channel is selected under the control of the channel selection controller 20. The signal of the selected broadcast channel is supplied to the video detection circuit 12 and is converted into a video signal here. This video signal is processed by the video signal processing circuit 13 and displayed on the CRT 14.

Further, the video signal is supplied to a decoder 21 where, for example, text (TEXT) data of teletext or a video program system (VPS) for identifying a broadcasting station, which is superimposed on a predetermined position of a vertical synchronizing signal. ) Data and the like are decoded, and these TEXT and VPS data are supplied to the setting controller 22. The tuning controller 20 is composed of a one-chip microcomputer, and stores a conversion table 23 in its built-in memory. Using this conversion table 23, the tuning information stored in the nonvolatile memory 24 is read to select a channel. The channel selection operation is performed by supplying the circuit 11.

The setting controller 22 is composed of a one-chip microcomputer and has a built-in memory for storing a station name code. The character generator 25 is used to display the contents of tuning information on-screen. The contents of the conversion table 23 are rewritten according to the input from the keyboard 26. Further, the sync detection circuit 27 generates a detection signal when detecting a horizontal synchronization signal and a vertical synchronization signal from the output signal of the video detection circuit 12 and supplies the detection signal to the tuning controller 20.

When a full auto search is instructed to the tuning controller 20 from the operation unit 26, the tuning controller 26 sequentially raises the tuning frequency of the tuning circuit 11 from the lowest frequency, and the sync detection circuit 27 detects a detection signal. When the channel number is supplied, the tuning information is stored in the preset channel of the non-volatile memory 24 after the channel number is small, and the setting controller 22 stores the station name code supplied from the decoder 21 in association with the preset channel. .

As a result, when the TV is the Vsyn system,
As shown in FIG. 2, preset channels (Pr) 01 to 1
Tuning voltage data data01 to data10, which are tuning information, are stored in the nonvolatile memory 24 and station name data Name-A to Pr-10 are stored in the built-in memory of the setting controller 22 in correspondence with each 0. Here, Name-A to Name-X indicate that the station name code can be read, and Pr-04 to Pr-10 indicate that there is no station name code. Further, in the case of the Fsyn method, FIG.
As shown in, the frequency data (CH) 02 to 22 is stored as tuning information instead of the tuning voltage data.

The conversion table 23 is provided with a pointer for instructing the address of the nonvolatile memory 24 corresponding to the preset channel (Pr) for each preset channel. At the end of the full auto search, addresses 01 to 10 of the non-volatile memory 24 are stored in the pointer of the conversion table corresponding to the preset channels (Pr) 01 to 10 as shown in FIG.

Next, changing the setting of the selected channel will be described. FIG. 5 shows an embodiment of a flowchart of the setting change process. In step S2, the setting controller 22 reads the preset channel and the station name code corresponding thereto from the built-in memory, and the character generator 25 performs on-screen display as shown in FIG. 6 (A).
Next, in step S4, the order to be rearranged is set as New-Pr in FIG. At this time, the values 01 to 07 set as New-Pr represent the order, and the value 99 represents the deletion.

In the next step S6, the setting controller 2
2 reads the conversion table 23 from the tuning controller 20, and in step S8, designates the preset channel (Pr) of the conversion table 23 by New-Pr in FIG. 6 (A),
The value of the preset channel (Pr) of FIG. 6A is set in the pointer of the conversion table 23 corresponding to the designated preset channel (Pr), and the conversion table is updated. Thereafter, the updated conversion table is written in the tuning controller 20 in step S10.

Next, the setting controller 22 is shown in FIG.
6A, the station name codes (Name) corresponding to the preset channels in FIG. 6A are rearranged in order instructed by New-Pr, and the station name code having New-Pr value 99 is deleted.
Next, in step S14, the on-screen display is performed and the process ends. As a result, the on-screen display is shown in FIG.
As shown in (B). The conversion table 23 is shown in FIG.
As shown in, the pointers corresponding to the preset channels (Pr) 01 to 07 respectively store addresses 01, 05, 02, 08, 04, 06, 10 of the nonvolatile memory 24. That is, the contents of the non-volatile memory 24 are not changed even if the preset channels are rearranged. The addresses 03, 07, 09 of the non-volatile memory 24 are invalid because they are not designated by the pointer of the conversion table 23.

That is, since the pointers in the conversion table 23 are rearranged, the preset channels are shown in FIG. 6 (B).
It corresponds to each station name code in the state of, and unnecessary stations can be deleted from the preset channel, and the preset channels can be arranged in the order desired by the user, so that there is no need for re-selection and rearrangement. The preset channel can be confirmed by the on-screen display as shown in FIG. Further, it is assumed that a station with a station name code Name-E newly starts broadcasting in the state of FIG. 7 and has been selected and stored.

Conventionally, when the station name code Name-E is added to the preset channel (Pr) 05, the preset channel (Pr) 05 is overwritten, so that it is assigned to the preset channel 05 and later in the current state. Station name code Pr-04, Pr-06, P
r-10 station again preset channel (Pr) 0
It had to be reset to 6,07,08 respectively.

However, in this embodiment, Name-E is set in the preset channel (Pr) 10. The tuning controller 20 sets the minimum address (address 03 in this case) in the empty area of the non-volatile memory 24 shown in FIG. 7 to the pointer corresponding to the preset channel (Pr) 10 selected in the conversion table 23, and sets the non-volatile The tuning voltage data data11 and the station name code Name-E stored in the selected channel are stored in the address 03 of the memory, and the state shown in FIG. 8 is obtained.

In this state, the processing shown in FIG.
On-screen display as shown in (A) is performed, and New-Pr is designated for rearrangement. That is, the station name code Name-E is set to New-Pr05, and the station name code Pr is set.
-04, Pr-06, Pr-10 are respectively New-Pr0.
Specify 6,07,08. As a result, the conversion table 23 is rearranged as shown in FIG. 10, and the on-screen display is as shown in FIG. 9 (B).

As described above, since the preset channels are rearranged, the pointers in the conversion table 23 are rearranged instead of rearranging the channel selection information in the nonvolatile memory 24. Therefore, the communication data amount between the channel selection controller 20 and the setting controller 22 is changed. Is less. The tuning controller 20
The setting controller 22 and the setting controller 22 may be configured by a single microcomputer. Also, when the channel selection order of the preset channels is matched between the TV and the VTR, the communication data amount is small by transferring the information of the conversion table between the TV controller and the VTR controller as in the above embodiment. I'm done.

Further, since the processing of FIG. 5 is the rearrangement of the pointers of the conversion table, the TV can be executed in an arbitrary channel selection state. Further, although the tuning voltage data is used as the tuning information in the above-mentioned embodiment, there is no problem even if it is frequency data, and the processing of rearranging the preset channels is the same.

[0025]

As described above, according to the channel selection channel setting method of the present invention, the channel selection information already set in a plurality of preset channels can be rearranged in an arbitrary order, and the rearrangement work is troublesome. Can be simplified and the time can be shortened, which is extremely useful in practice.

[Brief description of drawings]

FIG. 1 is a block diagram of a television receiver according to the present invention.

FIG. 2 is a diagram for explaining a Vsyn system full-auto search.

FIG. 3 is a diagram for explaining Fsyn type full-auto search.

FIG. 4 is a diagram showing a correspondence between a conversion table and a nonvolatile memory.

FIG. 5 is a flowchart of a setting change process.

FIG. 6 is a diagram showing an on-screen display during editing.

FIG. 7 is a diagram showing a correspondence between a conversion table and a nonvolatile memory.

FIG. 8 is a diagram showing a correspondence between a conversion table and a nonvolatile memory.

FIG. 9 is a diagram showing an on-screen display during editing.

FIG. 10 is a diagram showing a correspondence between a conversion table and a nonvolatile memory.

[Explanation of symbols]

 20 tuning controller 22 setting controller 23 conversion table 24 non-volatile memory

Claims (1)

[Claims] 1. A non-volatile memory for storing tuning information for selecting each of a plurality of preset channels, and a plurality of pointers for indicating a tuning information storage address of the non-volatile memory corresponding to each of the plurality of preset channels. And a conversion table that stores, by changing each pointer of the conversion table,
Channel selection channel setting method characterized by rearranging the channel selection information of each preset channel.