JPH01119181A - Tuning preset method for teletxt receiver - Google Patents

Abstract

PURPOSE:To accurately allocate a desired broadcasting channel with an easy operation by setting a broadcasting channel corresponding to a channel key by displaying a setting image including not only a numeral but a character recognizable for a user. CONSTITUTION:A first column COL1 in which the channel numbers of the channel keys are arranged in parallel in sequence of smaller number and on one end of which the character representing the fact that the display example shows a channel number string is attached, and image information which conforms a second column COL2 in which broadcast channel numbers already allocated to each channel are arranged in parallel and on one end of which the character representing the fact that the display example shows the broadcast channel number is attached to the first column COL1 are displayed at the time of presetting tuning. The broadcast channel is re-arranged by shifting a cursor to a prescribed position appropriately on a picture and inputting a desired numeral by using a cursor shift key, an enter key, and a numeral command key. In such a way, it is possible to execute desired preset tuning accurately by the easy operation.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a tuning preset method for assigning broadcast channels to channel keys in a teletext receiver.

[Prior Art] Since the channels used for television broadcasting and the available channels differ depending on the region, when installing a teletext receiving device, it is necessary to select the receiving channel using the channel key on the operation panel or remote control unit. A tuning preset is required to assign the broadcast channels to be used.

For example, in the Kanto region, channel key "1" is assigned broadcast channel "1" and channel key "2" is assigned U.
) Operations such as assigning the IF band broadcasting channel "42" are required.

Traditionally, such tuning preset methods have been carried out by appropriately rotating a rotary switch corresponding to a channel key that is located inside the housing so that it cannot be seen at all times, or by setting a channel key on the display screen. There was a method of displaying numbers corresponding to keys and broadcast channels to be assigned, changing the numbers by pressing the up key or down key, and adjusting the numbers by pressing the enter key.

[Problems to be Solved by the Invention] However, according to the above-mentioned former method, it takes a lot of time to determine the rotational position so that just tuning can be obtained, and it takes time to perform Tuning Precera 1. In addition, there is a problem that the operation is complicated.

In addition, according to the latter method described above, tuning preset is an operation that is only performed occasionally, such as when installing a television receiver or changing the installation location due to moving or other reasons. The user may forget which number represents the channel key and which number represents the broadcast channel, and if only numbers are displayed, the user may be confused.

The present invention has been made in consideration of the above points, and it is an object of the present invention to provide a tuning presetting method for a teletext receiving device that allows a user to accurately execute a desired tuning preset with a very simple operation. It is.

[Means for solving the problem] In order to solve this problem, in the present invention, when selecting the tuning preset mode, the channel numbers of the channel keys are arranged in ascending order, and at one end this display column indicates the channel number. The first column with a message indicating that it is a key number column and the broadcast channel numbers already assigned to each channel key are placed side by side, and the message indicating that this display column is a broadcast channel number column is added. The second column attached to one end is positioned in correspondence with the first column, and the image information is displayed on the display device so that the cursor is positioned on one of the channel key numbers in the first column, and the cursor movement key is pressed. The position of the cursor is changed in the first column in response to the press of , and then the cursor is moved to the broadcast channel number corresponding to the channel key number where the cursor is located when the enter key is pressed, and the cursor is moved to the broadcast channel number corresponding to the channel key number where the cursor is located when the enter key is pressed. The broadcast channel number at that position is changed to the number given, and when the enter key is pressed afterwards, that broadcast channel number is reset as the broadcast channel for the channel key of the channel key number.

[Function] If you perform a tuning preset by simply displaying numbers, there will be less information displayed and the user may not be able to properly set the tuning.Therefore, the channel numbers of the channel keys are arranged in ascending order, and one of them is The first column with a message indicating that this display column is a channel key number column and the broadcast channel numbers already assigned to each channel key are placed side by side, and this display column is a broadcast channel number column. Displays image information in which the second column with a word indicating that the first column corresponds to the first column is displayed at the time of tuning preset, and the cursor can be moved appropriately on this image using the cursor movement keys, enter key, and number command keys. You can now reset the broadcast channel by moving it to a predetermined position and inputting the desired number.

[Example 1] Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 2 shows the overall configuration of the teletext receiver. In FIG. 2, a received signal of a broadcast wave captured by an antenna 1 is provided to a channel selection demodulation circuit 2. As shown in FIG. The channel selection demodulation circuit 2 demodulates the television signal of the broadcast channel according to the channel selection data given from the system bus 4 under the control of the microprocessor 3 and supplies it to the data sampling error correction circuit 5 .

The data sampling error correction circuit 5 stores the code data superimposed in a predetermined horizontal scanning period of the vertical blanking period of the incoming television signal VID under the control of the microprocessor 3 via the system bus 4. The code data is output to the system bus 4 after error correction using a built-in buffer memory or the like.

In addition to the microprocessor 3, the system bus 4 includes an R
A program memory 6 having an OM configuration, a working memory 7 having a RAM configuration, a character generator 8, and a remote control signal receiving section 9 are connected. In accordance with the program stored in the program memory 6, the microprocessor 3 converts the code data given from the data extraction error correction circuit 5 into the character generator 8 when a teletext display mode is instructed from the remote control unit 10. The pattern data is converted into display pattern data using the display control circuit 11, and stored in the display memory 12 via the display control circuit 11.

Note that the nonvolatile memory 13 connected to the system bus 4 stores various last data etc. when the power is cut off.
This is read out when the power is turned on and used to return to the state at power-off.

A display timing generation circuit 14 is connected to the display control circuit 11 . The display timing generation circuit 14 provides the display control circuit 11 with vertical and horizontal synchronization signals separated from the television signal VID and a display clock signal obtained by frequency-multiplying these synchronization signals. The display control circuit 11 reads pattern data stored in the display memory 12 in a raster pattern in synchronization based on these synchronization signals and display clock signals, and provides the data to a CRT display device (not shown).

Note that the display control circuit 11 is configured to be supplied with the video signal VID, and when the display mode is not a teletext display mode, that is, when the display mode is a television broadcast display mode, the incoming video signal VID is directly transmitted to the CRT display device. It is designed to be given to

In addition to the above basic configuration, this embodiment includes a configuration for executing tuning preset.

A preset mode switch 15 is provided on the rear panel of the housing of this receiver, and a mode selection signal from this switch 15 is applied to the microprocessor 3 via an interface circuit 16.

Further, the program memory 6 stores a tuning preset processing program shown in FIG. 1, and the remote control unit 10 stores a channel key 1.
In addition to keys 0dl to 10d12, various keys used for tuning presets are provided, namely, an up'f-LOa, a down key 10b, and an enter key 10c, and the nonvolatile memory 13 has an area for storing tuning preset data and the like. It is provided.

When the microprocessor 3 detects the ON operation of the preset mode switch 15 during the teletext display operation, it starts the tuning preset processing program shown in FIG. 11 in step SP1, and then starts the tuning preset image SUR shown in FIG. 3. Display.

Here, the tuning preset image 1sUR is the third
Current setting status table T showing the current setting status as shown in the figure
It consists of ABi and a modified part enlarged table TAB2 that extracts and shows the part to be changed. Current setting status table TA
BI includes channel keys (not shown) provided on the operation panel of the receiver main body and channel keys 10d1 to 10d1 provided on the remote control unit 10.
The channel numbers of LOdL2 are arranged vertically in ascending order, and above them are the words [First position with position CHJ].
Column C0LI and each channel key 10dl~1odL2
The broadcast channel numbers already assigned to the position channel numbers are provided horizontally adjacent to the position channel numbers, and a second column C0L2 with the words "Setting CH" added to the top of this set channel (broadcast channel) number row is provided. The display number already assigned to each channel key 10d1 to 10d12 to be displayed on a part of the screen when a channel key is pressed and selected is provided horizontally adjacent to the set channel number. It is formed from a third column C0L3 with the words "display CHJ" attached above the display channel number column.

Note that the data for displaying this image SUR and each number data are stored in the nonvolatile memory 13, and are read out and displayed by the microprocessor 3 during this display operation. Furthermore, in the case of a teletext receiving device, the character generator 8 stores pattern data for many characters, so that the character generator 8 can display the above-mentioned text when reading the image SUR. used.

At the time of displaying this tuning preset image SUR, the cursor CUR is in the position channel column C
It is located at any number of 0LI. Following a predetermined procedure, the user uses the up key 10a and the down key 10b to move the cursor CUR to the position channel number corresponding to the channel key to be set, and presses the enter key 10c. The microprocessor 3 takes in this selected position channel (channel key) number in step SP3, and stores the setting channel number and display channel number corresponding to this position channel number in the setting channel column and display channel column of the change section enlarged table TAB2. Display. Also, at this time, the cursor CUR is positioned and displayed in the set channel number column of the enlarged change table TAB2, as shown in FIG. 4(A).

The user changes the set channel number to a desired number using the up key 10a and down key 10b according to a predetermined procedure while looking at this change section enlarged table TAB2 (see FIG. 4(B)), and then Enter key 1
Press 0c. At this time, the microprocessor 3
The set channel number changed in step SP4 is taken in, and the cursor CUR is positioned in the display channel column of the changed section enlarged table TAB2 (see FIG. 4(C)).

Next, the user presses the up key 10a according to a predetermined procedure while looking at this changed part enlarged table TAB2.
Then, use the down key 10b to change the display channel number to a desired number (see FIG. 4 (D>)), and then press the enter key 10c. At this time, the microprocessor 3 stores the display channel number changed in step SP5, rewrites the data in the nonvolatile memory 13 to the data of the above-mentioned setting channel number and display channel number, and moves the cursor CUR to the current setting state. It is located at that position channel number in the position channel column C0L1 of table TABI.

The reason why the display channel number can also be set is that the display channel number can be displayed in correspondence with the channel key number, and the display channel number can also be displayed in correspondence with the set broadcast channel number. This is to give the user a degree of freedom so that he or she can do whatever he wants.

Thereafter, the microprocessor 3 proceeds to step SP6 and determines whether or not the mode key 10e has been pressed. If it has not been pressed, the microprocessor 3 further determines whether or not the preset mode switch 15 has been turned off in step SP7.
If this switch 15 is not turned off, the process returns to step SP3 described above. Therefore, the user must press mode key 10.
By not turning off e and switch 15, tuning preset for the next desired channel key can be continued.

Note that when the microprocessor v3 detects the press in step SP6, it proceeds to step SP9 and waits for an off command of the switch 15, and when the off command is detected, it ends the tuning preset processing in step SP8. Also, when an off command for the switch 15 is detected in step SP7, the tuning preset process is ended in step SP8.

During reception display after executing such a tuning preset, press any channel key 10d1.
When ~10d12 is pressed, the microprocessor 3 reads the setting channel number corresponding to that channel key from the nonvolatile memory 13, and provides the tuning data corresponding to this setting channel number to the tuning demodulation circuit 2 for reception. While switching the broadcast channel, the non-volatile memory 13
Reads the display channel number from and displays that number in one corner of the screen.

Therefore, according to the above-mentioned embodiment, when setting the tuning preset, the image SUR, which is easy for the user to understand, including not only numbers but also words as shown in FIG. 3, is displayed and set. A desired broadcast channel can be accurately assigned to a channel key.

In addition, in the above-mentioned embodiment, the modified part enlarged table TAB2
The settings to be set are shown above, but enlarged table of changes TAB2
may be set on the current setting status table TABI instead of being provided on the image SUR.

In addition, in the above embodiment, the display channel number is set individually in correspondence with the channel key, but the display channel number is always associated with the set broadcast channel number, and the display channel number setting operation is performed. may be omitted.

[Effects of the Invention] As described above, according to the present invention, a setting image that includes not only numbers but also text that is easy for the user to understand is displayed, and the broadcast channel corresponding to the channel key is set. Accordingly, it is possible to realize a tuning dub reset method for a teletext receiving apparatus that can accurately allocate a desired broadcast channel by a simple operation.

[Brief explanation of the drawing]

FIG. 1 is a flowchart showing a tuning preset processing procedure according to an embodiment of the present invention, FIG. 2 is a block diagram showing the overall configuration of a teletext receiver, FIG. 3 is a route map showing images for tuning preset, and FIG. The figure is a route map showing changes in display content when changing preset channels. 2... Tuning demodulation circuit, 3... Microprocessor,
6... Program memory, 7... Working memory, 8... Character generator, 9... Remote control signal receiving section, 10... Remote control unit, 10a... Up key, 10b...
Down key, 10c...Enter key, 10d1~1
0d12... Channel key, 15... Preset mode switch, SUR... Image for tuning preset. Tuning preset processing procedure Figure 1

Claims (1)

[Claims] When the tuning preset mode is selected, the channel numbers of the channel keys are arranged side by side in ascending order, and a first column has a wording at one end indicating that this display column is a channel key number column. , the broadcast channel numbers already assigned to each of the channel keys are arranged side by side, and a second column with a word indicating that this display column is a broadcast channel number column attached to one end corresponds to the first column. Display the image information located on the display device so that the cursor is located at one of the channel key numbers in the first column, and change the position of the cursor within the first column in response to pressing the cursor movement key. Then, when the enter key is pressed, the cursor is moved to the broadcast channel number corresponding to the channel key number where the cursor is located, and the broadcast channel number at that position is changed to the number commanded by the numeric command key. , and then, when the enter key is pressed, the broadcast channel number is reset as the broadcast channel for the channel key having the channel key number.