JP4749839B2 - LCD television - Google Patents

Description

  The present invention relates to a liquid crystal television having a function of adjusting luminance adjustment and volume adjustment simultaneously according to an environment.

  Conventionally, in a television receiver such as a liquid crystal television, the brightness is adjusted by adjusting the luminance level of the backlight according to the viewing environment, and finally the liquid crystal television (hereinafter referred to as a liquid crystal television). ) Has been disclosed (see Patent Document 1).

  The “environment” shown above can include, for example, the brightness of ambient light. In Patent Document 1, the brightness of ambient light is detected by a photosensor, and according to the information on the brightness, A technology is disclosed for a configuration in which the luminance of the backlight is made to follow and the power consumption is reduced while obtaining the visibility comparable to the ambient light on the liquid crystal display surface.

As described above, conventionally, reduction of power consumption is mainly performed by saving useless power by controlling an appropriate luminance level of the backlight.
JP 2003-270613 A JP-A-11-97196

  However, in an AV device such as a liquid crystal television having two information sources of video and audio, as described above, the control for only the luminance level of the backlight that does not control the volume is an operation for power saving related to video. In addition, there is a problem that the operability is poor in setting the power consumption to an appropriate level, because it is necessary to perform a repetitive operation.

  In addition, environmental conditions in ordinary homes include installation locations such as living and kitchen, day / night / midnight hours, and contents such as music, movies, sports, commercials, etc. Depending on the environmental conditions, when there is a strong correlation between the decrease in the brightness of the video and the decrease in the volume, the conventional technology does not take this into consideration and does not perform appropriate power saving. There is a case.

  Therefore, the present invention has been proposed in view of such circumstances, and an object of the present invention is to provide a liquid crystal television that simultaneously controls the luminance and volume of a video.

  In order to solve the above problems, a liquid crystal television according to the present invention has the following features.

Liquid crystal television according to the present invention, a brightness control means for adjusting the brightness level of the backlight, a liquid crystal Tele Vision and a volume control means for controlling the volume level of the speaker,
Storing the correlation between the luminance level and the volume level for each environmental condition comprising the brightness and surrounding tranquility surrounding advance, to determine the environmental conditions,-out based on the determined environmental conditions, and a pair of luminance levels Correlation processing means for calculating the volume level,
When adjusting the brightness level and the volume level to a desired level, when one of the levels is determined, the other level is calculated by the correlation processing means, and the brightness control means and the volume control means Is characterized in that the calculated pair of the luminance level and the volume level are set at the same time so as to achieve appropriate power consumption.

In the liquid crystal television according to the present invention, the correlation processing means stores the function calculation parameters in accordance with the environmental conditions .

Further, in the liquid crystal television according to the present invention, the correlation processing means, when the pair of luminance levels and the volume level are input by a user's remote control operation , The input value is output in place of the luminance level and the volume level .

  As described above, according to the liquid crystal television according to the present invention, it is possible to achieve appropriate power saving by simultaneously controlling the luminance and volume of the video, and the user operability is improved. An excellent effect of simplification can be obtained.

  In addition, according to the liquid crystal television according to the present invention, it is possible to achieve appropriate power saving corresponding to the surrounding environmental conditions in consideration of the correlation between the luminance level of the video and the volume level.

  Hereinafter, embodiments of a liquid crystal television according to the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is a basic block diagram of a liquid crystal television according to the present invention.

  First, the basic configuration of the liquid crystal television according to the present invention will be described with reference to FIG.

  As shown in FIG. 1, the liquid crystal television according to the present invention is provided with a tuner 10 that receives a reception signal from an antenna that receives a broadcast reception wave, performs channel selection and the like, and performs frequency conversion from the tuner 10. Similarly, a detection circuit 11 that inputs a signal and detects the signal to extract a video and audio signal, a video processing circuit 14 that inputs the video signal and performs a process of driving the display unit 15, and an audio signal A control unit that controls input and control of the audio processing circuit 12 that performs processing for driving the speaker 13 and the like, and the video processing circuit 14 and the audio processing circuit 12 to control power consumption and control the entire apparatus. (Microcomputer) 16, a remote controller 18 operated by a user to operate an operation screen, a light receiving circuit 17 that receives a signal from the remote controller 18 and sends information to the controller 16, and information on the surrounding environment of Configured with the capacitors 19, the.

  In addition, the control unit 16 includes a luminance control unit, a volume control unit, a correlation processing unit, and an operation screen control unit for mainly controlling power consumption.

  Next, a basic operation concept for power saving of the liquid crystal television having the above-described configuration will be described below before explaining the detailed operation.

  As shown in the block diagram of FIG. 1, as a part capable of performing power saving according to the surrounding environment of the viewing user, a driving unit (illustrated) of the display unit 15 displaying video is mainly used. 2) of the sound output unit (not shown) of the sound processing circuit 12 is raised.

  As described above with respect to the prior art, the power saving operation of the drive unit of the display unit 15 is performed by controlling the video processing circuit 14 and lowering the luminance level of the backlight.

  On the other hand, the power saving operation of the audio output unit is performed by lowering the audio level by simply operating the remote controller 18 by the user.

  In the conventional technique, as described above, it is necessary to perform the two operations independently, and the operability and responsiveness are lacking. Therefore, in the present embodiment, by performing two operations at the same time so that, for example, a relationship such as (volume A, luminance level A) is achieved with one touch, simplification of operability and quick response are achieved. A certain operation is performed.

  A plurality of combinations of volume levels and luminance levels are stored in advance as a table, and a set value of one combination is read from this table during operation, so that various ambient environments can be dealt with.

  Furthermore, when performing the above operation, if there is a fairly strong correlation between the two levels of brightness and sound level in the surrounding environmental conditions, the two variables can be changed simultaneously using this correlation. It is possible to immediately set to an appropriate setting value.

  FIG. 2 is a diagram illustrating a case where the volume level and the luminance level have a linear correlation.

  Next, the contents of the graph shown in FIG. 2 will be described, and the relationship between the surrounding environment and the correlation will be described below.

  FIG. 2 is a graph showing two linear correlations between volume and luminance. One is a straight line passing through a point of luminance A with respect to volume A and having a slope k1. Shows a straight line passing through a point of luminance B with respect to volume B and having an inclination k2.

  As an ambient environment with the above correlation, for example, in the case where the ambient brightness is dark at midnight, the brightness and volume can be finely adjusted and maintained while maintaining the correlation. Thus, it is possible to achieve appropriate energy saving according to the operating situation.

  For example, if the standard value in the above state is an A value for both the luminance and the volume when viewed with a straight line having an inclination of k2, the luminance is adjusted from A to AH when the volume is adjusted from A to AH.

  Similarly, when the volume is adjusted from AL to AL, the luminance is adjusted from A to AL. In this way, it is possible to make a fine adjustment while maintaining the correlation and determine both to the desired value.

  It should be selected whether a straight line with an inclination of k1 or a straight line with an inclination of k2 is selected. When the volume level is fixed to a predetermined level, the line of k1 is selected in an environment where the luminance level is increased. In the case of an environmental condition where it is not necessary to increase the luminance so much, a straight line k2 is selected.

  In addition, in FIG. 2, although the straight line is shown, a 2 function and another nonlinear function may be sufficient.

  Next, in FIG. 2, for example, it is possible to set to a designated value. That is, as a combination of extreme settings, a case where the volume level is “A” and the luminance level is “0” can be considered. As such a content environment, for example, in the case of music, there is a case where video information is not necessary and only high-fidelity audio information is required.

  A case where the volume level is “0” and the luminance level is “A” is also conceivable.

  A method for designating the set values of the slopes k1 and k2 shown above or various combinations will be described.

  In the block diagram shown in FIG. 1, environmental state information is acquired by a sensor 19 that senses the surrounding environmental state. Examples of the sensor 19 include a photo sensor that senses ambient brightness, a small microphone that senses ambient volume, and a clock that acquires time information.

  Based on the information from these sensors 19, the correlation processing means of the control unit 16 reads and displays the set values stored in the table in advance.

  Alternatively, a list of setting values may be displayed first on the operation panel, and the user may select it.

  As described above, it is also possible to manually adjust the selected setting value (standard value), and it is also possible to adjust the setting value to any combination inputted by the user via the remote control. It is possible to cope with both simplification of operability and quick response when saving power.

  Next, the power saving operation of the liquid crystal television according to the present embodiment will be described with reference to FIG.

  FIG. 3 is a flowchart for explaining the operation of the liquid crystal television according to this embodiment.

  The operation panel control means of the control unit 16 determines whether it is a menu display instruction (step S10). If it is not a menu instruction (step S10; no), the process is terminated. If it is a menu instruction (step S10; yes), an operation menu is displayed (step S11).

  Next, the operation panel control means of the control unit 16 determines whether or not the eco mode (energy saving mode) is set (step S12). As a result of the determination, when the eco mode is not set (step S12; no), the process proceeds to other processes displayed on the operation panel (display unit 15).

  When the mode is eco mode (step S12; yes), the mode number (for example, mode 1 is given a set value as a function, mode 2 is prioritized to set the luminance level, mode 3 is the volume level, (Representing the case where the setting of Priority is given) is displayed, and the user is prompted to select a mode number (step S13).

  For example, when mode 1 is selected, display of parameters of the function read from the table, setting conditions (data based on information from the sensor), etc. are displayed (step S14).

  It is determined which one of the up / down switches operated by the user has been selected (step S15). In the case of up (step S15; yes), the luminance control unit and the volume control unit of the control unit 16 command to increase the luminance and volume level (step S16). In the case of down (step S15; no), the luminance control unit and the volume control unit of the control unit 16 command to decrease the luminance and volume level (step S17).

  Next, it is determined whether the setting has been completed (step S18). If it is determined that the setting has been completed (step S18; yes), the process returns to step S10.

  If the setting is not finished (step S19; no), the process returns to step S15 and the process is repeated.

  Next, when mode 2 or 3 is selected, the mode is set directly without performing manual control to a predetermined set value.

  The table is read and the setting conditions are displayed (steps S19 and S20), and the luminance control unit and the volume control unit of the control unit 16 set the values read from the table for the luminance and volume level (step S21).

  Next, whether or not the setting is OK is displayed, the user is made to make a determination, and the determination result of OK / NO is determined (step S22). If OK (step S; yes), step S10 is performed. Return to. If it is not OK (step S; no), it is determined that the set value is not appropriate, and the process returns to step S13 to change the mode number.

  In the present embodiment, modes 1 to 3 are shown. However, even if considering the surrounding environmental conditions, each setting level is standard, maximum, and minimum, and is combined into about nine basic classes in combination. It is considered reasonable.

  The liquid crystal television according to the present invention is not limited to the above-described embodiment, and various changes can be made without departing from the scope of the present invention.

1 is a basic block diagram of a liquid crystal television according to the present invention. It is the figure which showed the case where a volume level and a luminance level have a linear correlation. It is a flowchart explaining operation | movement of the liquid crystal television which concerns on this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Tuner 11 Detection circuit 12 Audio | voice processing circuit 13 Speaker 14 Image | video processing circuit 15 Display part 16 Control part 17 Light receiving circuit 18 Remote control 19 Sensor

Claims (3)

A brightness control means for adjusting the brightness level of the backlight, a liquid crystal Tele Vision and a volume control means for controlling the volume level of the speaker,
Storing the correlation between the luminance level and the volume level for each environmental condition comprising the brightness and surrounding tranquility surrounding advance, to determine the environmental conditions,-out based on the determined environmental conditions, and a pair of luminance levels Correlation processing means for calculating the volume level,
When adjusting the brightness level and the volume level to a desired level, when one of the levels is determined, the other level is calculated by the correlation processing means, and the brightness control means and the volume control means The liquid crystal television, wherein the calculated pair of the luminance level and the volume level are simultaneously set so as to achieve appropriate power consumption.   The liquid crystal television according to claim 1, wherein the correlation processing unit stores a parameter of the function calculation according to the environmental condition.   When the pair of luminance levels and the volume level are input by a user's remote control operation, the correlation processing means changes the input to a pair of luminance levels and volume levels calculated based on a function calculation. The liquid crystal television according to claim 2, wherein the measured value is output.

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