JPS62272676A - Television receiver - Google Patents

Abstract

PURPOSE:To omit a display element or the like for displaying a position number and respective channel selection information and to make the television receiver compact and simple by providing a preset data output means in a channel selection control part and a preset display control part for outputting to a picture display part. CONSTITUTION:In the channel selection control part 31, the preset data output means for outputting the data of the preset designated position number at the time of a preset operation and the respective preset channel selection data is provided and the preset display control part 32 for forming the preset designated position number and a display signal for displaying the character and the graphic of the respective preset channel selection data and outputting to the picture display part is provided. Thereby, at the time of the preset operation, the preset designated position number and the character and the graphic of the respective preset channel selection data such as a selected color television system, a tuning voltage are displayed on the picture display part.

Description

[Detailed Description of the Invention] 3. Detailed Description of the Invention [Field of Industrial Application] The present invention provides a voltage synthesizer selector that has reception processing functions for a plurality of color television systems and performs reception tuning by preset tuning. This invention relates to a station-type television receiver.

[Conventional technology]

Conventionally, as described in Japanese Patent Publication No. 5B-12821, television receivers using a voltage synthesizer channel selection system have a built-in non-volatile memory in the channel selection control section (tuning device) to preset reception channels. By operation, the location of each address in said memory.

That is, the tuning voltage data of each reception channel is digitally stored at the position of each position number, and based on the tuning voltage data of the position number selected in the memory by preset tuning,
It controls the tuning of the tuner section, processes the reception of the television channel of the selected reception channel, and displays the reception screen of the selected channel on a screen display section such as a CRT.

Note that, since the tuner section is normally controlled by switching the tuning voltage and the receiving band, in reality, by preset operation, data of the tuning voltage is stored in each position of the memory along with data of the tuning voltage, for example. VHI? High.

Data in the low (hereinafter referred to as VH and VL) and UHF reception bands is digitally stored.

By the way, some television receivers using a voltage synthesizer channel selection system have reception processing functions for a plurality of color television systems such as PAL, SECAM, and NTSC.

An example of this type of voltage synthesizer channel selection type television receiver that has reception processing functions for multiple color television systems, such as a television receiver used in the Middle East, is based on the color television system of the receiving channel. PAL and SECAM of the video processing section.

Since it is necessary to switch and use the NTSC chroma circuit, the color television system data is stored in each position number of the memory of the tuning control section along with the tuning voltage and reception band data by preset operation. Based on the data of the tuning voltage and reception band of the reception channel selected by digital storage and preset tuning, the tuner section's tuning is controlled, and the chroma circuit of the video processing section is controlled based on the data of the color television system. It controls switching and performs reception processing on the selected reception channel.

By the way, the television receiver used in the Middle East has VL, VH, and UHF signals on the side of the main body cabinet (1), as shown in Figure 4, in order to display the preset status during preset operation. Display elements such as light emitting diodes that light up to indicate each reception band (2) # (3
) # (4) and a preset operation section (5) with a keyboard for operation are provided, and a 7-segment light emitting device for displaying the position number is provided at the bottom of the CRT screen (6) on the front of the cabinet (1). Numerical display (7) such as diode, PAL, SECAM
, display elements such as light emitting diodes that illuminate and display each color television system of NTSC (8) * (9) *
θQ is provided.

Note that the operation section (5) is normally closed by a door. In addition, symbols VL, VH, UHF indicating VL, VH, and UHF are placed near the display elements (2), (3), and (4).
is marked, and the display element (8) I (9) # Q
Near O are PAL and SECAM.

Marked with NTSC characters.

When performing a preset operation, operate the keyboard of the operation unit (5), specify the position number, select the reception band and color TV system, vary the tuning voltage, and select the desired reception channel. By doing so, the preset designated position number is numerically displayed on the display (7), and the selected reception band and color television system are displayed on the display elements (2) to (4) I (
8') to (9) are selectively turned on.

In other words, a conventional voltage synthesizer channel selection type television receiver of this kind, which has reception processing functions for multiple color television systems, performs a preset operation using a preset specified position number, a selected reception band, and a color television system. A display (7) provided separately from the screen display section.
) and display elements (2) to (4) and (8) to 01, respectively.

Note that Japanese Patent Publication No. 59-10108 describes that when the receiving channel is switched by preset channel selection or the like, the number of the receiving channel is displayed on the screen display section for a certain period of time after switching.

[Problem that the invention seeks to solve]

By the way, the conventional television receiver of this type has a preset position number and a
Since each channel selection data such as the selected reception band and color television system is displayed on the screen display section and the display element of the separate display 9, for example, in the case of Fig. 4,
It is necessary to provide a large number of display elements on the sides and front of the cabinet (1), and a relatively large space is required to display the preset status on the cabinet (1). There are problems that cannot be simplified.

Further, the display element of the display device 9 is usually formed using a relatively small element in order to downsize the image receiver.
In this case, the display is small, and when performing preset operations at a distance from the cabinet (1), for example, when performing preset operations using a remote control device instead of the keyboard of the operation section (5), There is a problem that the display becomes difficult to read and it becomes difficult to preset the reception channel.

Furthermore, since the tuning voltage during presetting is not displayed, there is a problem that the presetting situation cannot be accurately grasped.

[Means for solving problems]

This invention has been made with the above-mentioned points in mind, and has a reception processing function for a plurality of color television systems, and by presetting the reception channel, each position number of the memory provided in the channel selection control section can be changed. In the position of the selected color television system.

Tuning data such as tuning voltage for each receiving channel is stored, and by a preset tuning operation, the television signal of the selected receiving channel is received and processed based on the tuning data of the selected position number in the memory. , in a voltage synthesizer tuning television receiver in which the reception screen of the selected reception channel is displayed on the screen display section, the tuning control section is provided with the data of the preset specified position number at the time of the preset operation and the Preset data output means is provided for outputting each channel selection data in the preset, and based on the output data of the output means, a display for displaying the preset designated position number and each character 1 graphic of each channel selection data in the preset. The television receiver is characterized by comprising a preset display control section that forms a signal and outputs it to the screen display section.

[Effect]

Therefore, during the preset operation, the preset designated position number, the selected color television system, the tuning voltage, etc., and the characters and nine figures of each channel selection data being preset are displayed on the screen display section.

〔Example〕

Next, the present invention will be explained in detail with reference to FIGS. 1 to 3 showing an embodiment thereof.

Figure 1 shows a circuit block, in which 0η is a receiving antenna, α is a tuner unit connected to the antenna (tl), which has a variable capacitance diode for tuning, and is connected to an input tuning voltage. The selected frequency is controlled according to the switching of the reception band.

03) is a video intermediate frequency amplification circuit connected to the tuner section 02; 04) is a video detection circuit connected to the amplification circuit a3;
0 is a video amplification circuit connected to the detection circuit 0→, and OQ is a luminance signal amplification circuit connected to the amplification circuit θ0.

α′? ) is the first switch for chroma switching whose switching piece is connected to the amplifier circuit Qυ, α81, (II, H is the three contact point (p) * (S) whose input terminal is the first switch 0'i)
) -0') connected to each tL for PAL, SEC
'Z ROMA circuit for AM, NTSC, Qυ is among 3 contacts>
, (S), and (n) are second switches for chroma switching connected to the output terminals of each chroma circuit (H), 0S, and (E).

(A) is amplifier circuit 03,0υ, OQ, detection circuit 04),
Switch 071, 2υ and chroma circuit (+81,
(II, the video processing section formed by in, the screen display section having a CRT for color display, and the amplifier circuit OQ
The elasticity signal of the switch Ql) and the chroma signal of the switching piece of the switch Ql) are input.

(C) is an audio intermediate frequency amplification circuit connected to the amplifier circuit 03, (C) is an audio detection circuit connected to the amplifier circuit (C), and (E) is an audio amplification circuit connected to the detection circuit (C). ,
(C) is an audio processing section consisting of amplifier circuits (C), (A), and a detection circuit (C), and (C) is a speaker connected to the amplifier circuit (A).

The pen shows a synchronous separation circuit connected to the amplifier circuit 0υ, and the horizontal and vertical oscillation circuits (1) are connected to the separation circuit, which output horizontal and vertical oscillation pulse signals to the display section (A).

0■ is a tuning control section that controls tuning of the tuner section 02 and chroma switching of the processing section (a), and has a 1-chip microcomputer, a nonvolatile memory, and a keyboard for operation, as will be described later. A synchronizing signal from the separation circuit is input, and operations during preset operation and preset channel selection are controlled based on key signals from the keyboard or remote control device.

0'3 is a preset display control section connected to the channel selection control section 01), which controls the synchronization signal of the separation circuit and the oscillation circuit (01).
) are input, and as described later, during preset operation, the data of the preset designated position number and each selection in the preset are input from the preset data output means of the tuning control unit 0]). station data,
That is, each channel selection data consisting of data of the selected receiving band, color television system, and preset tuning voltage is input, and a display signal for displaying the preset designated position number and character 9 figure of each channel selection data is input. is output to the screen display section.

By the way, what about the channel selection control department? 31) The display control unit 0 is configured as shown in FIG. 2, and in the same figure, (31a)
(81b) is a control circuit consisting of an L-chip microcomputer with model number LC6580C manufactured by Tokyo Sanyo Electric Co., Ltd., which controls the synchronization signal of the separation circuit and keyboard (atb).

Based on the key signal of the remote control device, it controls the preset operation and preset station selection, and uses the built-in preset data output means to output the specified position number data and each station selection data during the preset operation. .

(81C) is a nonvolatile memory connected to the control circuit (81b), model number MN12 manufactured by Matsushita Electric Industrial Co., Ltd.
Consisting of 25 memory integrated circuits, each address or position stores data on the color television system, reception band, and tuning voltage of each reception channel selected by preset operation.

That is, each preset channel selection data is digitally stored.

(31d) is a digital/analog conversion circuit connected to the control circuit (81b), and when the preset operation is performed, the data of the tuning voltage being preset is transferred to the control circuit (81b).
), and the tuning voltage data read out from the memory (atC) at the time of preset channel selection is input via the control circuit (81b), and the input tuning voltage data is converted into analog data. The tuning voltage is output to the tuning voltage terminal of the tuner section α4.

(81e) is a receiving band changeover switch having three contacts (Vl), (Vh), and (u), and the switching piece is the control circuit (a
tb), and each contact (vz), (vh
) - (u) are connected to the VL, VH, and UHF reception band terminals of tuner section a'3, respectively, and during preset operation, the control circuit (3
1b), and at the time of preset tuning, it is switched by the switching control of the control circuit (3tb) based on the reception band data read from the memory (31c), and each reception band terminal of the tuner section α is switched. The level of the switching piece is selectively varied, and the receiving band of tuner section 0 is selectively controlled to VL, VH, and UHF.

In addition, the keyboard (81a), control circuit (811))
, memory (81C) and conversion circuit (31d),
A channel selection control section 0]) is formed by the switch (ale).

(82a) is model number μPD6105 manufactured by NEC Corporation
This is a display signal generation circuit consisting of a C integrated circuit, into which the synchronization signal from the separation circuit and both oscillation pulse signals from the generation circuit (7) are input, and during preset operation, the control circuit (31a)
) is input, and as described later, the specified position number, selected reception band, color television system, and color display for character 1 graphic display of the tuning voltage being preset are input. Forms a signal and outputs it to the screen display section (to).

(32b) is a clock oscillation circuit that always outputs a reference clock pulse for display position determination to the generation circuit (82a).

Note that the display control section is formed by the generation circuit (82a) and the oscillation circuit (82b).

On the other hand, FIG. 3 shows the external appearance of a television receiver. In the same figure, the difference from FIG. 4 is that the display element (2
) to (4), (8) to 009 The point is that the display device (7) is omitted. Note that (1) in the figure is the keyboard (a
ta) shows the door of the operating section provided with it, and (c) shows the CRT screen of the screen display section (g).

When performing preset operations, for example, use the keyboard (3
By operating the preset key (not shown) in 1a), the control circuit ('l lb) is set to control the preset operation of the receiving channel.

Next, by operating the channel selection numeric keypad (not shown) on the keyboard (81, 1), for example, 1
A desired number is preset designated from the position numbers 16 to 16, and the position number is designated and set in the control circuit (31b).

Also, a reception band selection key on the keyboard (31a).

By operating the color TV system selection key (not shown),
The reception band and color television system are selected, and the control circuit (3
In 1b), the selected reception band and color television system are set.

Furthermore, by operating the tuning voltage up/down key (not shown) on the keyboard (31a), the control circuit (
Blb), the increase/decrease of the tuning voltage is specified.

Then, the control circuit (
a tb) selects the position of the preset designated position number in the memory (81c) by preset designation of the position number, and also switches the switch (82e) to the contact of the selected reception band by selecting the reception band. , and, depending on the selection of the color television system, switches the switches θ''71 and 0S of the video processing unit (a) to the contacts of the selected color television system, and also changes the tuning voltage continuously or in steps by specifying the increase/decrease of the tuning voltage. The digital data of the tuning voltage that increases or decreases in a straight line is output to the conversion circuit (81d).

Therefore, in the tuner unit 0→, the reception band is controlled to the selected band, that is, VL, VH, or UHF, based on the switching of the switch (32e), and the reception band is output from the conversion circuit (aid). Based on the analog tuning voltage, the tuning frequency is controlled to increase or decrease, thereby controlling the tuning.

In addition, the video processing unit (a) performs chroma processing for PAL, SECAM, and NTSC based on the switching of switches C1η and 0υ, respectively.
Among H, the chroma circuit of the selected color television system is connected, and the video processing of the selected color television system is controlled.

Then, the signal of the tuning frequency of the tuner unit (6) received by the antenna aυ, that is, the tuned reception television signal, is output from the tuner unit (2) to the amplifier circuit α field, and the amplifier circuit α field generates The received television signal is frequency-converted to a video intermediate frequency and amplified, and the received television signal at the video intermediate frequency output from the amplifier circuit 03 is input to the detection circuit αa and the amplifier circuit (c).

Furthermore, the input received television signal is video-detected by the detection circuit θ→, and from the detection circuit θ→ to the amplifier circuit 0.
A composite video signal of the received television signal is output to the 0 and switch θ 9 separation circuits, and a brightness signal of the received television signal is output from the amplifier circuit θQ to the screen display section (to) via the amplifier circuit 0. be done.

In addition, the composite video signal input to switch Q711 is
A chroma signal is supplied to the selected chroma circuit, such as the chroma circuit (11), and the chroma signal formed by the chroma processing of the chroma circuit (11) is output to the screen display section @ via the switch I2υ.

Furthermore, the separation circuit separates and extracts the horizontal and vertical synchronization signals from the input composite video signal, and transmits both of the extracted synchronization signals to the oscillation circuit (G) 1, the channel selection control section, and the display control section (2). ).

In addition, the oscillation circuit (G) oscillates and forms horizontal and vertical oscillation pulse signals in synchronization with the input horizontal and vertical synchronization signals, and sends both of the oscillation pulse signals to the screen display section (C) and the display control section. ).

The screen display section (A) controls the horizontal and vertical scanning of the CRT based on the input horizontal and vertical oscillation pulse signals, and also outputs the luminance signal output from the amplifier circuit 0 and the switch (A). chroma signal,
Display the reception screen in color on the CRT screen @.

Note that the horizontal oscillation pulse signal falls at the leading edge of each I horizontal scanning period, and the vertical oscillation pulse signal falls at the leading edge of each vertical scanning signal.

In addition, the amplifier circuit (C) frequency-converts and amplifies the received television signal at the input video intermediate frequency to an audio intermediate frequency, and sends the received television signal from the amplifier circuit (C) to the detection circuit (C). FM audio component is output.

The input FM audio component is detected by the detection circuit (C), and the audio signal of the received television signal is output from the detection circuit (C) to the speaker (C) via the amplifier circuit (C).

On the other hand, during a preset operation, the preset data output stage of the control circuit (81b) outputs the data of the preset designated position number and each channel selection data to the generation circuit (32a).

Based on the input data, the generation circuit (82a) forms a display signal to be described below and outputs it to the screen display section (2) during the preset operation.

That is, the generation circuit (32a) displays the preset designated position number in green numbers, displays the selected receiving band and color television system in red characters, and quantitatively determines the tuning voltage during presetting in green. It forms and outputs a display signal for graphically displaying the unselected reception band and color television system in light blue characters.

Note that the output timing of the display signal described above is set as described below based on the input horizontal and vertical oscillation pulse signals and the reference clock pulse of the oscillation circuit (82b).

That is, the generation circuit (82a) generates the built-in horizontal and vertical oscillation pulse signals each time the input horizontal and vertical oscillation pulse signals fall.
The counter for vertical position counting is started, and both counters start counting the reference clock pulses of the oscillation circuit (82b), and the display position is determined by the count of both counters, and both counters are set in advance. When a predetermined number of reference clock pulses are counted in each of the horizontal and vertical directions, output of display signals in the horizontal and vertical directions is started.

Then, the display signal output from the generation circuit (32a) is input to the screen display section (c), and at this time, the screen display section @ is generated in place of the luminance signal of the amplifier circuit OQ and the chroma signal of switch 0]). CR the display signal of the circuit (82a)
, T.

Therefore, during preset operation, FIG.

As shown in Figure 3, the CRT screen shows the numbers of the preset designated position number, the characters VL, VH, and U of the selected reception band and unselected reception band, and the selected color television system and Characters of unselected color television system PAL, SECAM, NTSC
, and a figure that quantitatively displays the tuning voltage being preset is displayed.

In addition, the numbers of the specified position number and the tuning voltage symbol are displayed in green, the selected reception band and color TV system are displayed in red, and the unselected reception band and color TV system are displayed in light blue. Ru.

Further, in the tuning voltage figure, the number of [[[[] increases as the tuning voltage increases.

By the way, in Figures 2 and 3, position number "10"
is specified, and VL or SECAM is selected as the reception band and color TV system. In this case, the position number IO is displayed in green, and the selected reception band, color TV, and preset operation are displayed. At times, the CRT screen (A) displays the reception screen together with the preset specified position number, selected reception band, color television system, and preset tuning voltage in large and clear format. Since the information is displayed in primary colors, the preset status can be easily grasped by looking at the CRT screen, and the user can easily perform preset operations by looking at the CRT screen (e).

In addition, when the reception screen of the desired reception channel of the selected color television system is displayed, press the keyboard (31a
) by operating the preset key to cancel the preset, each channel selection data of the desired reception channel of the selected color television system is written and stored in the specified position number position of the memory (atC). be done.

Then, the above preset operation is stored without repeating it.

Next, to explain the operation when selecting a preset station after a preset operation, for example, by operating the keyboard (ATA) and selecting a desired position number,
The control circuit (31b) controls the tuner section α and the video processing section (a) based on each channel selection data stored in the selected position number of the memory (31, C), and thereby, The television signal of the reception channel of the selected position number is received and processed by preset channel selection, and the reception screen is displayed on the CRT screen (c).

Note that during preset tuning, data is not output from the preset data output means of the control circuit (81b) to the display control unit 02, but for example, the selected position number etc. may be displayed on the CRT screen (image) for a certain period of time during preset tuning. ), data such as the selected position number is output from the channel selection data output means of the control circuit (81b) to the display control circuit 0→.

Therefore, in the case of the above embodiment, when performing a preset operation, each channel selection data such as the preset designated position number, selected reception band, color television system, and preset tuning voltage is displayed in text on the screen display. It is displayed as a single figure, and the preset status can be easily grasped from the screen display section @.

As is clear from FIG. 3, the conventional display 2 for displaying position numbers and each channel selection data
The display element can be omitted, making it possible to downsize the receiver and simplify the external design and display.

In addition, the position number and character 9 shapes of each channel selection data displayed on the screen display section (e) are larger than when displayed using display 1 display element such as a light emitting diode, making it easier to see the preset status display. For example, even when performing preset operations from a remote location using a remote control device, the preset status can be easily grasped.

Furthermore, since the tuning voltage, which was not displayed in the past, is displayed, it is of course possible to accurately grasp the preset situation, and in the case of the above embodiment, the tuning voltage is quantitatively displayed graphically, making it even more suitable. can be accurately grasped.

Further, in the above embodiment, the reception band and color television system selected by the preset designated position number 9,
Since the tuning voltages are clearly displayed in primary colors, and unselected reception bands and color television systems are also displayed in mixed colors that are relatively inconspicuous, there is also the advantage that presetting operations can be performed more easily.

In the above embodiment, the color television system is PAL, S
Although the case of three systems, ECAM and NTSC, has been shown, it goes without saying that the present invention can be applied to cases where the color television system is a plurality of systems other than the three systems.

Furthermore, it is not necessary to display reception bands, color television systems, etc. that are not selected.

On the other hand, if there is no need to switch the reception band based on the configuration of the tuner section α, etc., unnecessary tuning data such as the reception band may be omitted and displayed.
If more channel selection data is required than in the embodiment, the required number of channel selection data may be displayed.

Furthermore, it goes without saying that the preset designated position number and each channel selection data can be displayed using characters and figures different from those in the embodiment.

〔Effect of the invention〕

As described above, according to the television receiver of the present invention, the preset designated position number and each channel selection data are displayed on the screen display section in the form of 9 characters, so that the position number and each selection data are displayed on the screen display section. By omitting a display element for displaying station information, it is possible to achieve miniaturization and simplification, and it is also possible to make the display of preset status easier to see.

[Brief explanation of drawings]

1 to 3 show one embodiment of the television receiver of the present invention, FIG. 1 is a circuit block diagram, and FIG. 2 is a detailed circuit block diagram of a channel selection control section and a preset display control section, FIG. 3 is a perspective view, and FIG. 4 is a perspective view of a conventional television receiver. 0■...Tuner section, (A)...Video processing section, υ・
...Screen display section, 0])...Tuition selection control section, 00...
Preset display control section 0

Claims (1)

[Claims] (1) Has reception processing functions for multiple color television systems,
By presetting the receiving channel, each channel selection data of each receiving channel, such as the selected color TV system and tuning voltage, is stored in each position number of the memory provided in the tuning control section, and the preset selection is performed. By the station operation, the television signal of the selected receiving channel is received and processed based on each channel selection data of the selected position number in the memory, and the receiving screen of the selected receiving channel is displayed on the screen display section. In a voltage synthesizer tuning system television receiver, the tuning control section is provided with preset data output means for outputting data of a preset designated position number during a preset operation and each tuning data during the preset, and a preset display control unit that forms a display signal for displaying the position number specified by the preset and the characters and graphics of each channel selection data in the preset based on the output data of the output means and outputs it to the screen display unit. A television receiver characterized by: