JP2006340249A - Television receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a television receiver automatically reducing the lightness and volume of a video image at a preset time. <P>SOLUTION: The television receiver comprises: a first setting means for setting a time when the lightness and volume of video images are to be reduced just by a fixed amount; a second setting means for setting the amount to reduce the lightness of video images; a third setting means for setting a value to reduce the volume; and a means for reducing the lightness of video images just by the reduction amount set by the second setting means and for reducing the volume just by the reduction amount set by the third setting means when the present time becomes the time set by the first setting means. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a television receiver.

  When watching a television program on a television receiver, it is often desired to change the brightness (screen brightness) and volume of the video between daytime and night when the surroundings are quiet. In particular, high-brightness and high-quality television receivers, such as television receivers equipped with a liquid crystal display or plasma display in recent years, often want to adjust the brightness and volume of images slightly at night.

  In such a case, in the conventional television receiver, the user needs to lower the volume or reduce the brightness of the video on the backlight adjustment screen of the video menu by his / her own operation. Also, when it is nighttime to nighttime, the user needs to readjust the brightness and volume of the video again.

By the way, Japanese Patent Laid-Open No. 2000-115649 proposes a method of limiting the brightness and volume of a video to a certain value or less according to the viewing time and season of the user for the purpose of reducing power consumption. However, for example, the brightness and volume of the video are not automatically reduced by a certain amount at night.
JP 2000-115649 A

  An object of the present invention is to provide a television receiver capable of automatically reducing the brightness and volume of a video when a preset time is reached.

  Another object of the present invention is to provide a television receiver capable of automatically reducing the brightness and volume of a video or returning it to the original state according to a time zone.

  Another object of the present invention is to provide a television receiver that can reduce the brightness and volume of an image by a single key operation.

  Another object of the present invention is to provide a television receiver that can reduce the brightness and volume of an image or restore the original state by a single key operation.

  In addition, according to the present invention, the brightness and volume of the image can be reduced or returned to the original state by a single key operation, and the brightness and volume of the image are automatically adjusted according to the time zone. An object of the present invention is to provide a television receiver that can be reduced to the original state or returned to its original state.

  According to the first aspect of the present invention, the first setting means for setting the time for reducing the brightness and volume of the video by a certain amount, the second setting means for setting the amount of decrease in the brightness of the video, the volume The third setting means for setting the decrease value of the image, and when the current time reaches the time set by the first setting means, the brightness of the image is reduced by the decrease amount set by the second setting means. Means is provided for reducing the volume and reducing the volume by a reduction amount set by the third setting means.

  The invention described in claim 2 is a first setting means for setting a time zone in which the brightness and volume of the video are reduced by a certain amount, a second setting means for setting the reduction amount of the brightness of the video, A third setting means for setting a decrease value of the volume; when the current time is within a time zone set by the first setting means, the brightness of the image is set by the second setting means The first control means for reducing the volume by the amount and the volume set by the third setting means, and when the current time is outside the time zone set by the first setting means. It is characterized by comprising second control means for returning the brightness and volume to a state before being reduced by the first control means.

  According to a third aspect of the present invention, the control key for reducing the brightness and volume of the video by a certain amount, the first setting means for setting the amount of decrease in the brightness of the video, and the volume reduction value are set. When the second setting means and the control key are operated, the brightness of the image is reduced by the reduction amount set by the first setting means, and the volume is reduced by the second setting means It is characterized in that it is provided with a means for reducing only.

  According to the fourth aspect of the present invention, the first mode of the normal state and the second mode of the state where the brightness and volume of the video are reduced by a certain amount are used as the video brightness and volume control modes. Yes, a mode switching key for switching between the first mode and the second mode, a first setting means for setting the amount of decrease in brightness of the video, a second setting means for setting a decrease value of the volume, and control When the mode switching key is operated when the mode is the first mode, the control mode is switched to the second mode, the brightness of the image is reduced by the reduction amount set by the first setting means, and the volume is set. When the mode switching key is operated when the control mode is the second mode. Switching the first mode, characterized in that it comprises a second control means for returning to the state before being switched control mode the brightness and sound volume of the video to the second mode immediately before.

  According to the fifth aspect of the present invention, the first mode of the normal state and the second mode of the state in which the brightness and volume of the video are reduced by a certain amount are used as the video brightness and volume control modes. Yes, a mode switching key for switching between the first mode and the second mode, a first setting means for setting a time zone for setting the control mode to the second mode, and a setting for decreasing the amount of brightness of the video A second setting means, a third setting means for setting a volume decrease value, and when the mode switching key is operated when the control mode is the first mode, the control mode is switched to the second mode, First control means for reducing the brightness by the amount of reduction set by the second setting means and reducing the volume by the amount of reduction set by the third setting means, and the current time is the first setting means Therefore, when the control mode is the first mode when the set time zone is reached, the control mode is switched to the second mode, and the brightness of the image is decreased by the second setting means. The second control means for reducing the volume by the amount and the volume set by the third setting means, and when the mode switching key is operated when the control mode is the second mode, the control mode is changed to the second control means. Switching to the first mode, the third control means for returning the brightness and volume of the image to the state before the control mode is switched to the immediately preceding second mode, and outside the time zone in which the current time is set by the first setting means When the control mode is the first mode, the control mode is switched to the second mode, and the brightness and volume of the video are changed to the immediately preceding second mode. Characterized in that it comprises a fourth control means for returning to the state before being switched.

  According to the sixth aspect of the present invention, the first mode in the normal state and the second mode in which the brightness and volume of the video are reduced by a certain amount are used as the video brightness and volume control modes. Yes, a mode switching key for switching between the first mode and the second mode, a first setting means for setting a time zone for setting the control mode to the second mode, and a setting for decreasing the amount of brightness of the video A second setting means, a third setting means for setting a volume decrease value, and when the mode switching key is operated when the control mode is the first mode, the control mode is switched to the second mode, First control means for reducing the brightness by the amount of reduction set by the second setting means and reducing the volume by the amount of reduction set by the third setting means, and the current time is the first setting means Therefore, when the control mode is the first mode when the set time zone is reached, the control mode is switched to the second mode, and the brightness of the image is decreased by the second setting means. The second control means for reducing the volume by the amount and the volume set by the third setting means, and when the mode switching key is operated when the control mode is the second mode, the control mode is changed to the second control means. Switching to the first mode, the third control means for returning the brightness and volume of the image to the state before the control mode is switched to the immediately preceding second mode, and outside the time zone in which the current time is set by the first setting means When the control mode is the second mode, the control mode is set to the second mode by the first control means, or the control mode is the second control mode. The control mode is switched to the first mode only when the control mode is determined to be set to the second mode by the second control means, and it is determined whether the second mode is set. A fourth control means for returning the volume to the state before the control mode is switched to the immediately preceding second mode is provided.

  According to the present invention, the brightness and volume of an image can be automatically reduced when a preset time is reached.

  Further, according to the present invention, the brightness and volume of the video can be automatically reduced or returned to the original state according to the time zone.

  In addition, according to the present invention, the brightness and volume of an image can be reduced by a single key operation.

  In addition, according to the present invention, the brightness and volume of an image can be reduced or returned to the original state by a single key operation.

  According to the present invention, the brightness and volume of the video can be reduced or returned to the original state by a single key operation, and the brightness and volume of the video can be adjusted according to the time zone. It can be automatically reduced or restored to its original state.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention applied to a television receiver having a liquid crystal display will be described below with reference to the drawings.

  FIG. 1 shows a configuration of a television receiver provided with a liquid crystal display.

  The broadcast signal received by the analog antenna 1 is sent to the terrestrial analog tuner 2. The terrestrial analog tuner 2 performs a channel selection operation based on the channel selection information from the microcomputer 10. The video signal obtained by the terrestrial analog tuner 2 is sent to the video signal processing circuit 3. In the video signal processing circuit 3, OSD information generated by the OSD circuit 12 in the microcomputer 10 is superimposed on the video signal obtained by the terrestrial analog tuner 2. The video signal output from the video signal processing circuit 3 is sent to an LCD panel (liquid crystal display) 4 and output as a video. The audio signal obtained by the terrestrial analog tuner 2 is sent to the speaker 6 via the audio signal processing circuit 5 and output as audio.

  The terrestrial analog tuner 2, the video signal processing circuit 3 and the audio signal processing circuit 5 are controlled by the microcomputer 10. The microcomputer 10 includes a CPU 11, an OSD circuit 12, and the like. An operation unit (main unit operation unit) 21 provided in the television receiver main body is connected to the microcomputer 10. The microcomputer 10 is connected to a light receiving unit 22 for converting a remote control signal (optical signal) from the remote control 30 into an electrical signal.

  As shown in FIG. 2, the remote controller 30 is provided with a night mode key 31, a plurality of numerical keys, a cursor key, and the like.

  In this television receiver, the brightness of the backlight (image brightness) and volume of the LCD panel 4 are reduced by a certain amount by operating the night mode key, or the backlight is turned off for a preset time zone. The brightness and volume can be automatically reduced by a certain amount. Such a function is called a night mode function. A state in which the brightness and volume of the backlight are reduced by a certain amount by the night mode function is called a night mode ON state (second mode), and a state in which the night mode ON state is released (normal state) is night. This is called a mode OFF state (first mode).

  Whether the night mode ON / OFF switching control according to the time zone is performed, the backlight brightness decrease value and the volume decrease value when the night mode ON state transitions, and the night mode ON / OFF depending on the time zone When performing the switching control, the time zone during which the night mode is turned on can be set by the user on the night mode function setting screen (OSD screen). That is, the user operates the remote controller 30 to display a night mode function setting screen as shown in FIG. 3, and performs the above settings on the night mode function setting screen. In FIG. 3, the ▲ mark indicates the position of the currently set cursor.

  When “Synchronize with clock” is selected on the night mode function setting screen, the night mode ON / OFF switching control according to the time zone is performed in addition to the night mode ON / OFF switching control by the night mode key operation. Done. When “clock interlock” is not selected, only night mode ON / OFF switching control by night mode key operation is performed.

  The item “backlight brightness” is an item for setting a decrease value of the brightness of the backlight in the night mode ON state. The item “volume” is an item for setting a volume decrease value in the night mode ON state. The items of “start time” and “end time” are items for setting the start time and end time of the time zone in which the night mode is turned on when “clock synchronization” is selected.

  FIG. 4 shows a night mode switching control processing procedure performed by the microcomputer 10.

  First, the flags F1, F2, and F3 used in the night mode switching control process will be described.

  The flag F1 is a flag for storing whether or not the night mode is ON. If the flag F1 is set (F1 = 1), it indicates that the night mode is ON, and the flag F1 is reset (F1 = 0) indicates that the night mode is in the OFF state.

  The flag F2 is a flag for storing that the night mode is turned on based on the key operation of the night mode key 31, and if the flag F2 is set (F2 = 1), the key operation of the night mode key 31 is performed. Indicates that the night mode is turned on, and if the flag F2 is reset (F2 = 0), it means that the night mode is not turned on based on the key operation of the night mode key 31. Show.

  The flag F3 is a flag for storing that the night mode is turned off based on the key operation of the night mode key 31, and if the flag F3 is set (F3 = 1), the key operation of the night mode key 31 is performed. If the flag F3 is reset (F3 = 0), the night mode is not turned off based on the key operation of the night mode key 31. Show.

  When the power is turned on, the flags F1, F2, and F3 are reset (F1 = F2 = F3 = 0) by the initialization process. Further, when the night mode is in the ON state when the power is turned off, the brightness and volume of the backlight are returned to the original state (the state before the night mode is turned on).

  In the night mode switching control process, first, it is determined whether or not the night mode key 31 has been pressed (step S1). When the night mode key 31 is pressed, it is determined whether or not the night mode is ON based on the state of the flag F1 (step S2). If the night mode is OFF (F1 = 0), the night mode is turned ON (step S3). In other words, the current brightness and volume of the backlight are stored as the brightness and volume before the night mode is turned on, and the backlight brightness and volume are set values (decrease values set on the night mode function setting screen). ). Further, the flags F1 and F2 are set (F1 = F2 = 1), and the flag F3 is reset (F3 = 0) (step S4). Then, the process returns to step S1.

  If it is determined in step S2 that the night mode is in the ON state (F1 = 1), the night mode is set in the OFF state (step S5). That is, the brightness and volume of the backlight are returned to the state before the night mode is turned on (values stored as the brightness and volume before the night mode is turned on). The flags F1 and F2 are reset (F1 = F2 = 0) and the flag F3 is set (F3 = 1) (step S6). Then, the process returns to step S1.

  If it is determined in step S1 that the night mode key 31 has not been pressed, it is determined whether or not “clock interlock” is set (step S7). If the “clock interlock” setting is not performed, the process returns to step S1.

  If it is determined in step S7 that the setting of “clock interlock” is set, it is determined whether or not the night mode is ON based on the state of the flag F1 (step S8). If the night mode is in the OFF state (F1 = 0), it is determined whether or not the current time is within the set time zone of the night mode (in the time zone in which the night mode is turned on) (step S9). If the current time is not within the set time zone of the night mode, the process returns to step S1. If it is within the set time zone of the night mode, it is determined whether or not the current time is the start time of the set time zone of the night mode (step S10).

  If the current time is not the start time of the set time zone of the night mode, the process proceeds to step S12, and based on the state of the flag F3, it is determined whether or not the factor that the night mode is OFF is the night mode key operation. Determine. If it is determined that the factor that the night mode is in the OFF state is the night mode key operation (F3 = 1), the process returns to step S1. When it is determined that the factor that the night mode is in the OFF state is not the night mode key operation (F3 = 0), the night mode is turned on (step S13). That is, the current brightness and volume of the backlight are stored as the brightness and volume before the night mode ON state, and the backlight brightness and volume are decreased by the set value. Further, the flag F1 is set (F1 = 1), and the flags F2 and F3 are reset (F2 = F3 = 0) (step S14).

  If it is determined in step S10 that the current time is the start time of the set time zone of the night mode, the flag F3 is reset (F3 = 0) (step S11), and the process proceeds to step S12. In this case, since it is always NO in step S12, the process proceeds to step S13 and the night mode is turned on.

  If it is determined in step S8 that the night mode is in the ON state (F1 = 1), whether the night mode key operation is the cause of the night mode being in the ON state based on the state of the flag F2. It is determined whether or not (step S15).

  If it is determined that the night mode key operation is caused by the night mode being turned on (F2 = 1), the process returns to step S1. If it is determined that the factor that the night mode is ON is not the night mode key operation (F2 = 0), it is determined whether or not the current time is within the night mode set time zone (step S16). ).

  If the current time is within the set time zone of the night mode, the process returns to step S1. If the current time is not within the set time zone of the night mode, the night mode is turned off (step S17). That is, the brightness and volume of the backlight are returned to the state before the night mode is turned on (values stored as the brightness and volume before the night mode is turned on). Further, the flags F1, F2 and F3 are reset (F1 = F2 = F3 = 0) (step S18). Then, the process returns to step S1.

  In the above embodiment, when the night mode key 31 is pressed when the night mode is OFF, the night mode is turned ON. When the night mode key 31 is pressed when the night mode is ON, the night mode is turned ON. The mode is turned off. When the night mode is in the OFF state, the night mode is turned on when the current time becomes the start time of the set time zone of the night mode. When the night mode is in the ON state and the night mode is outside the set time zone, the night mode is turned off unless the cause of the night mode being turned on is the night mode key.

  Even when the night mode is turned on because the current time is the start time of the set time zone of the night mode, when the night mode key is pressed, the night mode is turned off.

  That is, the ON / OFF control of the night mode based on the night mode key is given priority over the ON / OFF control of the night mode based on the set time zone of the night mode. However, when the start time of the set time zone of the night mode comes, the night mode is always turned on.

  When the night mode is in the ON state and the night mode is outside the set time zone, the night mode may be turned off regardless of the cause of the night mode being turned on. Good. In order to do this, step 15 may be omitted, and if YES in step S8, the process may proceed to step S16.

  The function setting of the night mode may be performed even when the night mode is in the ON state. Also, when the night mode is in the ON state, the brightness of the backlight may be changed by the video menu, and a normal volume operation may be enabled.

  In the above embodiment, when the night mode is turned off, the brightness and volume of the backlight are returned to the state before the night mode is turned on. It does not have to be.

  When switching the night mode to the ON state or when switching the night mode to the OFF state, a message to that effect may be displayed.

  When the night mode key is operated, first, only the current night mode ON / OFF state is displayed without switching the night mode ON / OFF state, and the night mode key is operated again during the display. Alternatively, the night mode ON / OFF state may be switched.

  Further, when the night mode is turned on, items (for example, contrast) other than the brightness and volume of the backlight may be changed. Note that the night mode key may simply be used as a key for reducing the brightness and volume of the backlight only by a set decrease value.

It is a block diagram which shows the structure of the television receiver provided with the liquid crystal display. 4 is a schematic diagram showing keys provided on the remote controller 30. FIG. It is a schematic diagram which shows an example of a night mode function setting screen. 3 is a flowchart showing a procedure of night mode switching control processing performed by a microcomputer 10;

Explanation of symbols

1 Analog antenna 2 Terrestrial analog tuner 3 Video signal processing circuit 4 LCD panel 5 Audio signal processing circuit 6 Speaker 10 Microcomputer 30 Remote control 31 Night mode key

Claims (6)

First setting means for setting a time for reducing the brightness and volume of the video by a certain amount;
Second setting means for setting the amount of decrease in brightness of the image;
Third setting means for setting a decrease value of the volume, and a decrease amount set by the second setting means when the current time reaches the time set by the first setting means Means for reducing the sound volume by a decrease amount set by the third setting means,
A television receiver comprising: First setting means for setting a time period during which the brightness and volume of the video are reduced by a certain amount;
Second setting means for setting the amount of decrease in brightness of the image;
A third setting means for setting a decrease value of the volume;
When the current time falls within the time zone set by the first setting means, the brightness of the image is reduced by the reduction amount set by the second setting means, and the volume is set by the third setting means. First control means for reducing the amount of reduction, and before the brightness and volume of the video are reduced by the first control means when the current time is outside the time zone set by the first setting means. Second control means for returning to the state of
A television receiver comprising: Control keys to decrease the brightness and volume of the image by a certain amount,
First setting means for setting the amount of decrease in brightness of the image;
Second setting means for setting a decrease value of the volume, and when the control key is operated, the brightness of the image is decreased by the reduction amount set by the first setting means, and the volume is set to the second Means for reducing by the amount of reduction set by the means;
A television receiver comprising: As the video brightness and volume control modes, there are a first mode in a normal state and a second mode in which the brightness and volume of the video are reduced by a certain amount. The first mode and the second mode Mode switching key for switching between
First setting means for setting the amount of decrease in brightness of the image;
A second setting means for setting a decrease value of the volume;
When the mode switching key is operated when the control mode is the first mode, the control mode is switched to the second mode, and the brightness of the image is reduced by the reduction amount set by the first setting means, A first control means for reducing the volume by a reduction amount set by the second setting means; and when the mode switching key is operated when the control mode is the second mode, the control mode is switched to the first mode; Second control means for returning the brightness and volume of the video to the state before the control mode is switched to the immediately preceding second mode;
A television receiver comprising: As the video brightness and volume control modes, there are a first mode in a normal state and a second mode in which the brightness and volume of the video are reduced by a certain amount. The first mode and the second mode Mode switching key for switching between
First setting means for setting a time zone for setting the control mode to the second mode;
Second setting means for setting the amount of decrease in brightness of the image;
A third setting means for setting a decrease value of the volume;
When the mode switching key is operated when the control mode is the first mode, the control mode is switched to the second mode, and the brightness of the image is decreased by the reduction amount set by the second setting means, First control means for reducing the volume by a reduction amount set by the third setting means;
If the control mode is the first mode when the current time is within the time zone set by the first setting means, the control mode is switched to the second mode, and the image brightness is set to the second mode. Second control means for reducing the volume by a reduction amount set by the means and reducing the volume by a reduction amount set by the third setting means;
When the mode switching key is operated when the control mode is the second mode, the control mode is switched to the first mode, and the brightness and volume of the image before the control mode is switched to the immediately preceding second mode The third control means for returning to the control mode, and if the control mode is the first mode when the current time is outside the time zone set by the first setting means, the control mode is switched to the second mode, Fourth control means for returning the brightness and volume of the image to the state before the control mode is switched to the immediately preceding second mode;
A television receiver comprising: As the video brightness and volume control modes, there are a first mode in a normal state and a second mode in which the brightness and volume of the video are reduced by a certain amount. The first mode and the second mode Mode switching key for switching between
First setting means for setting a time zone for setting the control mode to the second mode;
Second setting means for setting the amount of decrease in brightness of the image;
A third setting means for setting a decrease value of the volume;
When the mode switching key is operated when the control mode is the first mode, the control mode is switched to the second mode, and the brightness of the image is decreased by the reduction amount set by the second setting means, First control means for reducing the volume by a reduction amount set by the third setting means;
If the control mode is the first mode when the current time is within the time zone set by the first setting means, the control mode is switched to the second mode, and the image brightness is set to the second mode. Second control means for reducing the volume by a reduction amount set by the means and reducing the volume by a reduction amount set by the third setting means;
When the mode switching key is operated when the control mode is the second mode, the control mode is switched to the first mode, and the brightness and volume of the image before the control mode is switched to the immediately preceding second mode When the control mode is the second mode when the current time is outside the time zone set by the first setting means, the control mode is set by the first control means. Only when it is determined whether the control mode is set to the second mode by the second control means and whether the control mode is set to the second mode by the second control means. , Fourth control means for switching the control mode to the first mode and returning the brightness and volume of the video to the state before the control mode is switched to the immediately preceding second mode;
A television receiver comprising:

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