JPH0895536A - Display controller - Google Patents

Abstract

PURPOSE: To recognize a present wide mode without performing burdensome operation when power source is turned on. CONSTITUTION: When a prescribed button of a remote controller 13 is operated, and the power source is turned on by a microcomputer 9 in the state where a main power source switch 14 is turned on, the wide mode immediately before power source off stored in a nonvolatile memory 10 is read out, and a signal showing a character or a figure corresponding to the wide mode and the control data are supplied to a video processing part 4. The video processing part 4 supplies a prescribed image signal supplied through an antenna 1, a tuner/VIF part 2 to a CRT 8 through an amplifier 6 based on the control data from the microcomputer 9 at the wide mode corresponding to the control data, and it supplies the signal showing the character or the figure corresponding to the wide mode to the CRT 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display control device suitable for use in, for example, a television receiver that outputs an image or a sound, or an AV device.

[0002]

2. Description of the Related Art In a conventional television receiver,
For example, radio waves received by an antenna connected to a television receiver are selected by a built-in tuner. That is, the target frequency band (channel) is selected. The signal corresponding to the selected channel is demodulated, the image signal and the audio signal are extracted, the image signal is output to the CRT, and the audio signal is output to the speaker.

In a television receiver having a screen with an aspect ratio of 16: 9 so that an image of high-definition or the like can be displayed, by operating a predetermined button provided on a remote controller or an operation panel, a 4: 3 aspect ratio can be obtained. Wide mode for displaying an image with an aspect ratio (NTSC format image) is, for example, full mode, wide zoom mode, zoom mode, or normal mode (aspect ratio 4: 3).
You can switch to any of the modes.

As shown in FIG. 5A, an image in the normal mode has an aspect ratio of 4: 3, and on the screen having an aspect ratio of 16: 9, non-image areas are displayed at the left and right ends. It In the full mode, as shown in FIG.
The normal mode image is enlarged and displayed in the left and right directions to the edges of the screen. Therefore, the image becomes a horizontally long image.

In the wide zoom mode, as shown in FIG. 5 (c), the image in the normal mode is displayed not only in the horizontal direction up to both ends of the screen but also in the vertical direction with a slight enlargement. Therefore, the image is slightly horizontally long, but is improved as compared with the case of the full mode.

Further, in the zoom mode, as shown in FIG. 5D, the image in the normal mode is enlarged in the left and right direction to both ends of the screen, and further, in the up and down direction at the same enlargement ratio as the left and right direction. Is also enlarged and displayed. For this reason,
The aspect ratio of the image is the same as in the normal mode.

When such wide mode switching is performed, as shown in FIG. 6A, a character (characters) corresponding to the switched wide mode is displayed at a predetermined location (lower left in this example) on the screen. Column) or figure is, for example, 3
Only displayed for a second.

Generally, it is not possible to accurately recognize in which wide mode the image is displayed by just looking at the image displayed on the screen, but from such a display, the setting at that time is made. It is designed so that you can know the wide mode that you did.

Alternatively, as shown in FIG.
A character string corresponding to each wide mode and a predetermined cursor are displayed on the screen, and a predetermined cursor movement button provided on the remote control is operated to change the cursor displayed on the screen to a predetermined wide mode. In some cases, the wide mode can be switched by moving to the corresponding character string and pressing the decision button provided on the remote controller. Also in this case, at the time of switching, a character string or a graphic corresponding to the switched wide mode is displayed, for example, for 3 seconds at a predetermined place on the screen, for example, at the lower left of the screen.

In either case, when the power is turned off, the wide mode set at that time is stored in the non-volatile memory built in the television receiver, and then the power is turned on. In this case, the wide mode stored in the non-volatile memory is displayed.

However, when the power is turned on, FIG.
As shown in (c), a predetermined image is displayed on the screen, but the character string or figure corresponding to the wide mode is not displayed on the screen.

[0012]

In the conventional television receiver, the characters or characters corresponding to the switched wide mode are operated only when the wide mode is switched by operating the remote controller or the operation panel as described above. A graphic is displayed at a predetermined position on the screen. Therefore, in order to display the currently set wide mode, it is necessary to operate a predetermined button on the remote controller or the operation panel, which is a troublesome problem.

Further, in order to display the wide mode, it is necessary to switch the current wide mode, and there is a problem that the operability is poor.

Furthermore, the wide mode immediately before the power is turned off is stored in the built-in non-volatile memory, and when the power is turned on next, a predetermined image is displayed in the wide mode stored in the non-volatile memory. Is displayed. Therefore, if the wide mode immediately before the power was turned off last time is forgotten, the current wide mode may not be known when the power is turned on next time.

The present invention has been made in view of such a situation, and when a power source is turned on or a screen display is turned on, a character corresponding to the current wide mode for a predetermined time. Alternatively, the figure is displayed on the screen so that the current wide mode can be recognized without performing a troublesome operation.

[0016]

A display control apparatus according to claim 1, wherein at least one of a predetermined image, a character, and a graphic is selected.
Display means for displaying one in a predetermined wide mode (for example, CRT 8 in FIG. 1) and determination means for determining whether or not the power is turned on (for example, step S in the program of FIG. 2).
1) and based on the discrimination result of the discriminating means, when the power is turned on, a character or a graphic corresponding to the current wide mode is displayed at a predetermined position on the display means at a predetermined timing.
Display control means (for example, steps S2 to S5 in the program of FIG. 2) for displaying only for a predetermined time is provided.

A display control device according to a second aspect of the present invention is a display means for displaying at least one of a predetermined image, a character or a graphic in a predetermined wide mode (for example, CRT 8 in FIG. 1).
And a discrimination means for discriminating whether or not the screen display is turned on (for example, step S11 in the program of FIG. 4), and the current wide mode when the screen display is turned on based on the discrimination result of the discrimination means. Character or figure corresponding to
It is characterized in that display control means (for example, steps S12 to S15 in the program of FIG. 4) for displaying at a predetermined position of the display means at a predetermined timing for a predetermined time is provided.

[0018]

In the display controller according to claim 1, C
At least one of a predetermined image, a character, and a graphic is displayed in a predetermined wide mode by RT8. Further, based on the determination result of whether or not the power is turned on in step S1, the character or graphic corresponding to the current wide mode is displayed at a predetermined position on the CRT 8 at a predetermined timing for a predetermined time. Therefore, when the user wants to know the current wide mode most, such as when the power is turned on, it can be recognized without performing a troublesome operation.

In the display control apparatus according to the second aspect, the CRT 8 displays at least one of a predetermined image, character or graphic in a predetermined wide mode. In addition, based on the determination result of whether the screen display is turned on in step S11, the character or graphic corresponding to the current wide mode is displayed at a predetermined position of the CRT 8 at a predetermined timing for a predetermined time. . Therefore, the current wide mode can be displayed on the CRT 8 by pressing a predetermined button without switching the wide mode.

[0020]

1 is a block diagram showing the configuration of an embodiment of a television receiver to which the display control device of the present invention is applied. A main power switch (switch) 14 turns on / off the main power of the television receiver, and when this switch is turned on, the television receiver is in a standby mode, and a remote controller from a remote controller 13 described later is used. It is designed to allow operation.

The remote controller 13 is output from, for example, a power button 13A for turning on / off the power of the television receiver, a screen display button 13B for turning on / off the screen display, a channel button 13C for selecting a channel, and a speaker 7. A volume adjusting button 13D for adjusting the volume is provided, and light (infrared rays) corresponding to the operated button is emitted from a built-in light emitting unit.

The light receiving unit 12 receives the light emitted from the remote controller 13 and converts it into a corresponding signal, and then the microcomputer 9
It is designed to be supplied to. This signal is, for example,
Corresponds to the circus code.

The tuner / VIF unit 2 selects a predetermined station from the signal supplied from the antenna 1, that is, selects and demodulates a station in a target frequency band (channel) from the signal supplied from the antenna 1. Built-in video intermediate frequency (V
IF (Video intermediate free)
frequency) circuit to convert it to a frequency that is easy to process, and then supplies the image signal to the video processing unit 4 described later,
The audio signal is supplied to the audio processing unit 3.

The microcomputer 9 has a function of switching on / off the screen display based on an instruction from the user and a function of switching on / off the screen display, and corresponds to a predetermined character (character string) or figure. The signal is supplied to the video processing unit 4.
Moreover, the microcomputer 9 supplies the channel number (last channel), tone information, and wide mode, which were selected or set immediately before the power of the television receiver was turned off, to the nonvolatile memory 10. Has been done. Furthermore, it is designed to measure the time.

The microcomputer 9 also supplies a tuning signal corresponding to a predetermined channel to the tuner / VIF section 2.
The tuner / VIF unit 2 controls a built-in PLL circuit according to this channel selection signal to select a corresponding predetermined channel. Further, the microcomputer 9 is adapted to supply predetermined audio information to the audio processing section 3.

Further, the microcomputer 9 controls control data for determining the wide mode, for example, V (Vertical) size for determining the vertical size of the display image, corner correction for determining the display position of the display image on the screen, and the like. Data is generated and supplied to the video processing unit 4, or a predetermined control signal is output in accordance with the signal corresponding to the circus code supplied from the light receiving unit 12 to control each unit.

The audio processing unit 3 amplifies the audio signal supplied from the tuner / VIF unit 2 in a predetermined mode (for example, mono, stereo, or bilingual mode) in accordance with the sound information supplied from the microcomputer 9. Supply to 5. The amplifier 5 amplifies the audio signal supplied from the audio processing unit 3 and supplies it to the speaker 7.

The video processing unit 4 also converts a digital signal corresponding to a character or graphic supplied from the microcomputer 9 into an analog signal, mixes it with a video signal supplied from the tuner / VIF unit 2, and outputs RGB signals. After being converted into a signal, the signal is supplied to the amplifier 6. At this time, the video processing unit 4
Generates an RGB signal corresponding to a predetermined wide mode according to control data supplied from the microcomputer 9, and supplies the RGB signal to the amplifier 6. The amplifier 6 amplifies the RGB signal supplied from the video processing unit 4 and supplies it to the CRT 8.

The CRT 8 displays an image corresponding to the RGB signals supplied from the video processing section 4 via the amplifier 6. This image is displayed in a predetermined wide mode according to the control data supplied from the microcomputer 9 to the video processing unit 4.

The crystal oscillator 11 is controlled by the microcomputer 9, generates electric pulses at predetermined time intervals, and supplies the electric pulses to the microcomputer 9. This allows the microcomputer 9 to accurately measure the time. Non-volatile memory 1
0 stores the channel (last channel) selected or set immediately before the power is turned off, the wide mode, and the polyphonic information supplied from the microcomputer 9.

Next, with reference to the flow chart shown in FIG. 2 and the schematic diagram shown in FIG. 3, the operation when the power source is turned on by the remote controller 13 will be described.

First, when the power button 13A of the remote controller 13 is pressed, the light corresponding to the power button 13A is emitted from the built-in light emitting section and is received by the light receiving section 12. Light receiving part 1
Upon receiving the light emitted from the remote controller 13, the device 2 converts it into a corresponding signal and supplies it to the microcomputer 9. This signal corresponds to, for example, a circus code for instructing power-on.

The microcomputer 9 commands the power supply control unit 15 to turn on the power supply according to the signal from the light receiving unit 12. The power supply controller 15 turns on the power supply according to a command from the microcomputer 9.

As shown in FIG. 2, the television receiver is operated in step S1 by a predetermined application program which has been operating since the main power switch 14 was turned on and the television receiver was in the standby mode. It is determined whether or not the power supply of has been turned on. When it is determined that the power of the television receiver is not turned on, this determination process is repeated in step S1. On the other hand, when it is determined that the power of the television receiver is turned on, the process proceeds to step S2. In this case, since the power is turned on by operating the remote controller 13, the process proceeds to step S2.

In step S2, the screen display is turned on under the control of the microcomputer 9. That is, the data stored in the nonvolatile memory 10 corresponding to the predetermined wide mode set immediately before the power is turned off last time is read and the corresponding character string or figure is displayed. The digital RGB signal is supplied to the video processing unit 4.

A digital R representing the character string or figure corresponding to the predetermined wide mode supplied to the video processing unit 4.
The GB signal is then converted into an analog RGB signal, amplified by the amplifier 6, and then supplied to the CRT 8, and the corresponding character string or figure is displayed, for example, in the lower left of the screen.

Next, in step S3, the microcomputer 9 sets a 3-second timer in order to set the display time of the character string or graphic corresponding to the wide mode to 3 seconds. The 3-second timer is configured to be capable of counting only 3 seconds by counting signals output from the crystal oscillator 11 at predetermined time intervals under the control of the microcomputer 9, for example. And the 3 second timer is 3
The tube surface display is on until the time is measured for only one second.

As a result, the character string corresponding to the current wide mode as shown in FIG. 3A (for example, "wide zoom") or the current wide mode as shown in FIG. 3B is set. A corresponding graphic is displayed at a predetermined location on the screen, for example, in the lower left, and in the wide mode, a predetermined image is displayed on the screen.

In FIG. 3B, for example, the graphic b1 corresponds to the wide zoom mode (current wide mode) in which the image is enlarged horizontally and slightly vertically, and the graphic b2 is obtained.
Corresponds to the zoom mode in which the image is enlarged vertically and horizontally,
Further, the figure b3 corresponds to the normal mode which is displayed as it is. Furthermore, the figure b4 corresponds to the full mode in which the image is enlarged left and right. Then, among these figures, the figure corresponding to the current wide mode (in this case, the figure b1 corresponding to the wide zoom mode which is the current wide mode) is displayed, for example, at the lower left of the screen.

Next, in step S4, it is determined by the 3-second timer whether or not the time has been measured for 3 seconds. yet,
When it is determined by the 3-second timer that the time has not been measured for 3 seconds, the determination process of step S4 is repeated. On the other hand, if it is determined by the 3-second timer that the time has been measured for only 3 seconds, the process proceeds to step S5, and the pipe surface display is turned off under the control of the microcomputer 9.

As a result, the character string or graphic corresponding to the wide mode displayed on the screen is erased from the screen.

Next, in step S6, another process, for example, a channel selection process corresponding to a button operation by the remote controller 13, a channel number immediately before the power is turned off,
Non-volatile memory for wide mode and sound information 1
Last memory processing to be stored in 0 or remote control 13
A signal such as a circus code is received, and a corresponding process such as circus sense is performed. When these processes are completed, the process returns to step S1 and step S1.
The processes of 1 to S6 are repeatedly executed.

In step S3 in the flowchart of FIG. 2, when the screen display is turned on, the microcomputer 9 controls the screen to display a predetermined image for a moment as shown in FIG. 3 (c). The normal mode with an aspect ratio of 4: 3 is displayed, and immediately after that, a predetermined image is displayed on the screen in the current wide mode, and a character string or a graphic corresponding to the current wide mode is displayed in a predetermined place on the screen. Can be displayed. This allows
The current wide mode can be emphasized.

Alternatively, as shown in FIG.
In step S3, when the screen display is turned on, the character string corresponding to the wide mode is displayed side by side at a predetermined position on the screen, and only the character string corresponding to the current wide mode is changed to another wide mode. The display color may be different from the display color of the corresponding character string.

For example, the character string corresponding to the current wide mode (in this case, the character string "wide zoom") is displayed in white, and the character strings corresponding to other wide modes are displayed in, for example, gray. You can This allows
It is possible to simultaneously recognize all kinds of wide modes that can be set and the current wide mode.

In this way, when the power is turned on, the character string or graphic corresponding to the wide mode of the image displayed on the screen is displayed at a predetermined position on the screen for a predetermined time. Therefore, when the power is turned on, the wide mode of the image currently displayed on the screen can be recognized without performing a troublesome operation.

Next, the operation when the screen display is turned on will be described with reference to FIG.

First, when the screen display button 13B of the remote controller 13 is operated to turn on the screen display, light corresponding to this button operation is emitted from the built-in light emitting section. This light is received by the light receiving unit 12, converted into a corresponding signal, and then supplied to the microcomputer 9. The microcomputer 9
The screen display is turned on based on the signal from the light receiving unit 12.

At the same time when the power is turned on, the microcomputer 9
As shown in FIG. 4, it is determined by the predetermined application program started by step S11 whether or not the screen display is turned on. If it is determined that the screen display is not turned on, step S11
At, this determination process is repeated. On the other hand, if it is determined that the screen display is turned on, the process proceeds to step S12. In this case, since the screen display is turned on by operating the screen display button 13B of the remote controller 13, step S
Proceed to 12.

In step S12, the screen display is turned on under the control of the microcomputer 9. As a result, a digital RGB signal representing a predetermined character string or graphic corresponding to the current wide mode is supplied to the video processing unit 4. The digital RGB signal corresponding to the predetermined character string or graphic supplied to the video processing unit 4 is converted into an analog RGB signal there, and amplified by the amplifier 6,
It is supplied to the CRT 8 and the character string or graphic corresponding to the current wide mode is displayed.

Next, in step S13, the microcomputer 9
As a result, the 3-second timer is set in order to set the display time of the character string or graphic corresponding to the wide mode to 3 seconds. The 3-second timer is configured to count the signals output from the crystal unit 11 at predetermined time intervals and to count the time for 3 seconds under the control of the microcomputer 9, for example. Then, the tube surface display is turned on until the 3-second timer measures only 3 seconds.

As a result, the character string corresponding to the current wide mode as shown in FIG. 3A (for example, "wide zoom") or the current wide mode as shown in FIG. 3B is set. The corresponding graphic is displayed at a predetermined place on the screen.

Next, in step S14, it is determined whether or not the 3-second timer has clocked for 3 seconds. When it is determined by the 3-second timer that the time has not yet been counted for 3 seconds, the determination process of step S14 is repeated. On the other hand, if it is determined by the 3-second timer that the time has been measured for only 3 seconds, the process proceeds to step S15, and the pipe surface display is turned off under the control of the microcomputer 9.

As a result, the character string or graphic corresponding to the wide mode displayed on the screen is erased from the screen.

Next, in step S16, another process
For example, a channel selection process corresponding to a button operation by the remote controller 13, a last memory process for storing in the nonvolatile memory 10 a channel number immediately before the power is turned off, a wide mode, and polyphonic information, or from the remote controller 13. The signal such as the circus code is received, and the corresponding process such as circus sense is performed. When these processes are completed, the process returns to step S11, and the processes of steps S11 to S16 are repeatedly executed.

When the screen display is turned on in step S13, the character string corresponding to the current wide mode is displayed on the screen by the method shown in FIG. 3 (c) or 3 (d). Although it can be displayed, this method is similar to the case described above with reference to the flowchart in FIG.

In the above embodiment, the time for displaying the character string or figure corresponding to the wide mode on the screen of the CRT 8 is 3 seconds, but it can be set to any other length.

In the above embodiment, the wide mode is displayed, but other than that, the channel number, polyphonic information, or time may be displayed. That is, when the power is turned on or the screen display is turned on, the channel number, the polyphonic information, or the time can be displayed on the screen for only 3 seconds, for example.

In the above embodiment, the character string or graphic corresponding to the current wide mode is displayed on the CRT, but it may be displayed on another display device.

Furthermore, the display control device of the present invention is applicable not only to a television receiver but also to AV equipment such as a video tape recorder or a laser disc player, and an AV system constituted by them.

[0061]

According to the display control device of the first aspect, a predetermined image is displayed on the display means in a predetermined wide mode, and the determination result by the determination means as to whether or not the power is turned on is displayed. Based on the display control means, the character or figure corresponding to the current wide mode is displayed at a predetermined position of the display means at a predetermined timing for a predetermined time. When the user wants to know the current wide mode most without performing a troublesome operation such as an operation, a character or a graphic corresponding to the current wide mode is automatically displayed on the display means. Therefore, by simply turning on the power, it is possible to recognize the current wide mode without performing any other troublesome operation and to immediately know whether or not it is necessary to switch to the desired wide mode. It will be possible.

According to the display control device of the second aspect,
A predetermined image is displayed on the display means in a predetermined wide mode, and the display control means determines whether the character corresponding to the current wide mode is displayed based on the determination result by the determination means whether the screen display is turned on. Since the graphic is displayed at a predetermined position of the display means at a predetermined timing for a predetermined time, the current wide mode can be displayed on the display means without switching the wide mode. Therefore, it becomes possible to simplify the remote control operation for displaying the wide mode and improve the operability.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of a television receiver to which a display control device of the present invention is applied.

FIG. 2 is a flowchart for explaining the operation of the television receiver shown in FIG.

FIG. 3 is a schematic diagram for explaining the operation of the television receiver shown in FIG.

4 is a flowchart for explaining the operation of the television receiver shown in FIG.

FIG. 5 is a schematic diagram showing each wide mode.

FIG. 6 is a schematic diagram for explaining the operation of a conventional television receiver.

[Explanation of symbols]

 1 antenna 2 tuner / VIF section 3 audio processing section 4 video processing section 5, 6 amplifier 7 speaker 8 CRT 9 microcomputer 10 non-volatile memory 11 crystal oscillator 12 light receiving section 13 remote control 13A power button 13B screen display button 13C channel button 13D volume Adjustment button 14 Main power switch (switch) 15 Power control unit

Claims (2)

[Claims] 1. A display unit for displaying at least one of a predetermined image, a character or a graphic in a predetermined wide mode, a determination unit for determining whether or not a power source is turned on, and a determination result of the determination unit. Based on the above, there is provided display control means for displaying a character or graphic corresponding to the current wide mode at a predetermined position of the display means at a predetermined timing for a predetermined time when the power is turned on. Characteristic display control device. 2. A display means for displaying at least one of a predetermined image, a character or a graphic in a predetermined wide mode, a determination means for determining whether or not the screen display is turned on, and a determination result of the determination means. Based on, when the screen display is turned on, display control means for displaying a character or a figure corresponding to the current wide mode at a predetermined position of the display means at a predetermined timing for a predetermined time. A display control device characterized by the above.