JP2545840B2 - Television receiver - Google Patents

Description

TECHNICAL FIELD The present invention relates to a television receiver in which a reception channel is set corresponding to a position number.

[Outline of Invention]

According to the present invention, in a television receiver in which a reception channel is set corresponding to a position number, channel information indicating a correspondence relationship between the position number and the set reception channel is divided and displayed on a plurality of screens to display the number of channels. Even if the number of channels increases, the channel information can be displayed, and an inexpensive integrated circuit for display generation can be used.

[Conventional technology]

Television receivers equipped with a PLL synthesizer type tuning circuit are in widespread use. In such a television receiver, a reception channel is set in advance corresponding to each position number. When a position number is designated by a commander, for example, at the time of channel selection, the channel corresponding to the channel number is selected, and the selected channel number is displayed on the screen of the television screen.

At the time of tuning, it is possible to improve the operability at the time of tuning by first seeing which position number corresponds to which channel. Therefore, as disclosed in Japanese Patent Publication No. 60-17271, for example, a television receiver has been proposed in which a list of correspondences between position numbers and set reception channels is displayed on a screen on one screen. . That is, FIG. 6 is a list of correspondence relationships between position numbers displayed on the screen of such a conventional television receiver and set reception channels. As shown in FIG. 6, the position number 101 corresponding to the address of the memory for storing the channel information is displayed in one screen, and the channel number 1 corresponding to the position number 101 is displayed under each position number 101.
02 is displayed.

[Problems to be solved by the invention]

By the way, in recent years, the number of receiving channels is increasing with the spread of CATV. As the number of reception channels increases in this way, the correspondence between the position number and the set reception channel becomes more difficult to understand. Therefore, as described above, it becomes more necessary to display the correspondence between the position number and the set reception channel.

However, in the above-mentioned conventional television receiver, the list of the correspondence between the position number and the set reception channel is displayed on the screen on one screen, so that the characters become smaller as the number of channels increases. However, there is a problem that the display is difficult to see. Further, in order to display a large number of position numbers and channels on one screen in this way, it is necessary to use a display generating circuit with high resolution. Except when displaying a list of the correspondence between position numbers and set reception channels on the screen, a high-resolution display generation circuit is not required to display the screen of the television receiver, and therefore a high-resolution display is generated. The use of a circuit causes a great increase in cost.

Therefore, an object of the present invention is to display a list of correspondences between position numbers and set reception channels without impairing the visibility even when the number of set channels is increased, and to provide an inexpensive integrated circuit for display generation. It is to provide a television receiver that can be used.

[Means for solving problems]

The present invention is characterized in that, in a television receiver in which a reception channel is set corresponding to a position number, channel information indicating a correspondence relationship between the position number and the set reception channel is divided and displayed over a plurality of screens. It is a television receiver that does.

[Action]

For example, a list of correspondences between position numbers of 12 positions and reception channels is displayed in 6 positions over 2 pages. The position to be set is specified by the up / down key 34, and the channel corresponding to the position specified by the ten key 31 is set. Since the list of the correspondence between the position numbers and the receiving channels is displayed over, for example, two pages, the displayed characters do not become small, and it is not necessary to use the display generating circuit 24 having a high resolution.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows the structure of a television receiver to which the present invention is applied. In FIG. 1, the reception signal from the antenna 1 is supplied to the tuner circuit 2. A signal of a desired receiving channel is selected by the tuner circuit 2, and this signal is converted into a video intermediate frequency signal by a mixing circuit of the tuner circuit 2.

This television receiver uses a PLL synthesizer type tuning circuit. That is, the local oscillation signal from the tuner circuit 2 is supplied to the phase comparator 5 via the prescaler 3 and the frequency divider 4. The reference signal from the reference signal oscillator 6 is supplied to the phase comparator 5. The phase comparator 5 compares the local oscillation output that has passed through the prescaler 3 and the frequency divider 4 with the reference signal output from the reference signal oscillator 6. This comparison output is supplied to the tuner circuit 2 via the low-pass filter 7, and the local oscillation signal is controlled based on this comparison output. The pre-frequency divider 3, the frequency divider 4, the phase comparator 5, the reference signal oscillator 6, and the low-pass filter 7 constitute a PLL 8. The frequency division ratio of the frequency divider 4 is based on the channel data stored in the memory 9 in advance.
It is set by the microcomputer 10. A desired reception channel is selected by setting the frequency division ratio of the frequency divider 4.

The video intermediate frequency signal output from the tuner circuit 2 is
It is supplied to the video detection circuit 12 via the video intermediate frequency amplification circuit 11. Video detection circuit 12 for video intermediate frequency amplification circuit 11
The video detection circuit 12 outputs the composite color video signal. This composite color video signal is supplied to the input source select 13.

This television receiver has an external video input terminal 14A,
Has 14B. A video device such as a VTR or a video disc can be connected to the external video input terminals 14A and 14B. The composite color video signal from the video equipment connected to the external video input terminals 14A and 14B is supplied to the input source selector 13.

The input source selector 13 is switched by the output of the microcomputer 10 based on the command from the commander 21. The video detection circuit 12 from the input source selector 13
A desired video signal is selected from among the video signals from and the video signals from the external video input terminals 14A and 14B.

The composite color video signal output from the input source selector 13 is supplied to the video signal processing circuit 15, and the synchronizing signal in the composite color video signal is supplied to the deflection circuit 16. The deflection circuit 16 forms horizontal and vertical deflection currents, and these horizontal and vertical deflection currents are passed through the deflection coils of the cathode ray tube 17. The video signal processing circuit 15 uses the three primary color signals R,
G, B are demodulated, and the three primary color signals R, G, B are added to the adders 18A, 18B,
It is supplied to the cathode ray tube 17 via 18C respectively.

A command from the commander 21 is supplied to the microcomputer 10 via the light receiving section 22, and a command is given from the key switch 23 arranged on the operation panel of the television receiver. Based on a command from the microcomputer 10, various display signals are output from the display generation circuit 24, and these display signals are output from the video signal processing circuit 15 by the adders 18A, 18B and 18C. It is superimposed on G and B respectively. Various information is displayed on the surface of the cathode ray tube 17 by the output from the display generation circuit 24.

FIG. 2 shows a commander 21 for operating this television receiver. The commander 21 is provided with a ten-key pad 31, a power on / off key 32, an enter key 33, an up / down key 34, a source switching key 35, a channel preset key 36, a display preset key 37, and the like.

Switching of channels is performed by the ten keys 31.
Since the channel is switched by operating the ten keys 31, the operability is not deteriorated even when the number of receiving channels is increased. In other words, if the number of channel setting keys corresponding to the number of reception channels is provided, the number of keys to be arranged becomes extremely large when the number of reception channels increases. When the channel is set by the up / down keys, the number of keys arranged is reduced, but it takes a very long time to select a channel. Numeric keypad
If the receiving channel is switched by 31, the channel can be easily switched no matter how many receiving channels increase.

As mentioned above, this television receiver
A synthesizer type selection circuit is used. Channel data is stored in the memory 9 in advance corresponding to each position number. When the position number is designated by the ten keys 31, the channel data of the corresponding position is read from the memory 9. Based on this channel data, the frequency division ratio of the frequency divider 4 is set, and the receiving channel can be switched.

A reception channel is set in advance for each position number. The operation at this time will be described below.

When setting the reception channel, the channel preset key 36 is used. Channel preset key 36
By the operation of, a display as shown in FIG. 3 appears. The display shown in the leftmost column 51 shows the position number, the display shown in the middle column 52 shows the channel number to be set, and the display shown in the rightmost column 53 shows the channel number. Indicates. A row 54 surrounded by a broken line shows a row of position numbers that can be set. The color of the display character of line 54 of this position number is different from the color of other display characters. For example, while the other display characters are displayed in green, the position number and display number display characters in row 54 are displayed in yellow, and the channel number display character 55 in row 54 is displayed in red. This indicates that the number corresponding to the display character 55 (the receiving channel of position number 1 in FIG. 3A) is set. Note that the line
The display character 55 of the channel number 54 may be displayed by blinking.

In this state, when the channel number is designated by the ten keys 31 and the enter key 33 is pressed, the receiving channel is set. For example, in FIG. 3A, the channel number “1” corresponding to the position with the position number “1” is set. Then, the set row 54 is changed by the up / down key 34 as shown in FIGS. 3A to 3C. By changing the row 54 to be set by the up / down key 34 and repeating the same operation, the channel at each position number is set.

When you press the down key of the up / down key 34,
The row 54 to be set is moved downward. Position numbers "1" to "6" are set on the screen of one page. When the down key is pressed further, the screen of the next page is displayed as shown in FIG. 3C. The position numbers "7" to "12" are set on the screen of this page.

In this embodiment, the position numbers are thus set from "1" to "12". On the other hand, the number of positions displayed on one screen is six. Then, a list of 12 positions is displayed by displaying a list of the correspondence between the position numbers and the reception channels to be set over two pages of 6 positions.

In this television receiver, the channel number being received and the channel number displayed on the screen can be set separately. This is because it may be easier to understand by displaying the channel number of the key station depending on the channel number of the broadcasting station that is actually receiving. For example,
UHF broadcasting is prevalent in places away from the city center. UHF
Some broadcasting stations relay the key stations and broadcast the same programs as the key stations. In this case, it is more convenient for the user to display the channel number of the channel of the key station than to display the channel number of the station to be received.

The display preset key 37 is used when setting the display channel. By operating this display preset key 37, the same display as when setting the reception channel appears. Then, the display channel is set by repeating the same operation as setting the reception channel.

For example, in FIG. 4, position number "4" has 50 channels set as reception channels and 4 channels set as display channels. With this setting, if "4" is input with the ten-key pad 31 at the time of channel selection, the reception state of 50 channels is set and "4" is displayed on the television screen.

FIG. 5 shows another embodiment of the present invention. In the above-described embodiment, the line 54 to be set, which is shown in a color different from that of the other display characters, is moved up and down on the screen to specify the position to be set. On the other hand, in this embodiment, the set rows 64, which are shown in different colors, are fixed on the screen. By operating the up / down key 34 as shown in FIGS. 5A to 5B, the position number column 61, the received channel number column 62, and the displayed channel number column 63 are moved up and down. Will be scrolled.

In the above example, the list of correspondences between position numbers and reception channels is displayed over two pages, but this list may be subdivided and displayed.

〔The invention's effect〕

According to the present invention, for example, a list of correspondences between position numbers of 12 positions and reception channels is displayed in 6 positions over 2 pages. In this way, a list of correspondences between position numbers and reception channels is, for example, 2
Since the image is displayed over the page, the display characters do not become small even if the number of positions increases, and it is not necessary to use a high-resolution display generation circuit, which leads to cost reduction.

[Brief description of drawings]

FIG. 1 is a block diagram of an example of a television receiver to which the present invention is applied, FIG. 2 is a plan view of an example of a commander, and FIG. 3 is a correspondence between position numbers and receiving channels in an embodiment of the present invention. 4 is a schematic diagram used to explain display settings, and FIG. 5 is a schematic diagram showing a list of correspondences between position numbers and reception channels in another embodiment of the present invention. FIG. 6 is a schematic diagram showing a list of correspondences between position numbers and reception channels of a conventional television receiver. Description of main symbols in the drawings 2: Tuner circuit, 8: PLL, 10: Microcomputer, 2
4: Display generation circuit, 21: Commander, 34: Up / Down key, 31: Numeric keypad, 36: Channel preset key, 37:
Display preset key.

Claims (1)

(57) [Claims] 1. In a television receiver in which a reception channel is set corresponding to a position number, channel information indicating a correspondence relationship between a position number, a set reception channel, and a display channel is split-displayed over a plurality of screens. Television receiver characterized by being performed.