JP2011101078A - Display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that activation time from a power standby state to a normal use state becomes long due to increase in amount of data to be handled, acceleration of data processing and function increase by loading an image recording function or the like in a digital broadcast receiver or the like, and power consumption during standby becomes large and an energy saving performance is not good though the activation time is shortened in a high-speed activation mode. <P>SOLUTION: The display device has a plurality of standby modes, and includes a control part 101 for controlling the selection of the plurality of standby modes when power is OFF. The control part 101 includes a human sensitive sensor 3 for detecting the presence/absence of a person and his/her movement, a brightness sensor 2 for detecting illuminance, and a CPU 4 for selecting one of the plurality of standby modes on the basis of the output of the human sensitive sensor 3 and the output of the brightness sensor 2. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a display device, and in particular, enables a high-speed startup and a reduction in power consumption in a digital broadcast receiver having a plurality of standby modes.

  In a digital broadcast receiving device as an example of a display device, the power supply is increased according to an instruction from a remote control or the like to the digital broadcast receiving device by increasing the amount of data to be handled, speeding up data processing, and increasing the functionality by installing a recording function. When starting up, the time required for starting up from the standby state of power supply to normal operation and normal use is as long as several tens of seconds. That is, it takes a long time for the digital broadcast receiver to start up normally after the user turns on the power of the digital broadcast receiver with a remote controller or the like from the standby standby state of the digital broadcast receiver, and waits for a while. There is a problem.

  In order to solve this problem, the main processor that controls the center of the digital broadcast receiving apparatus, the memory connected to the main processor, and the circuit block connected to the main processor including the interface with the outside are placed in a start standby state. In this case, it is necessary to continue supplying power. In this way, the normal use state can be achieved at high speed. However, in that case, there arises a further problem that the power consumption in the start-up standby state of the power source becomes large.

  Therefore, normally, in the start-up standby state, power is turned on by a remote control or the like (only from the power standby state to the normal use state), that is, power is supplied only to the circuit elements that realize the minimum function, and other circuits The device was in energy-saving standby mode where no power was supplied to the device.

  As a method of shortening the startup time while suppressing power consumption, it takes time until the normal use state, but the above-mentioned energy-saving standby mode with reduced power consumption, main processor that controls the center of the digital broadcast receiver, main It has both a memory connected to the processor and a high-speed start-up mode that keeps supplying power to the circuit block connected to the main processor, including the interface with the outside, and can be brought into a normal use state at high speed. There has also been proposed a digital broadcast receiving apparatus in which a user can set a setting value to be set in the fast start-up mode. However, even in such a case, there is a problem that wasteful power is consumed even when it is not necessary to start up at high speed, that is, even when the user does not give an instruction to perform normal operation to the digital broadcast receiver with a remote controller or the like. .

  In such a case, depending on the user's settings, it is possible to reduce power consumption by monitoring the surrounding environment with a brightness sensor, observing frequently used time zones, and the amount of broadcasting using electronic program information. There has been proposed one that automatically controls an energy saving standby mode and a high-speed startup mode in a startup standby state of a power source (see Patent Document 1).

JP 2008-131360 A

  When switching between the energy-saving standby mode and the high-speed start-up mode by the method shown in Patent Document 1, it is determined whether or not the room has a constant brightness by the brightness sensor, and whether there are many or few programs to be viewed based on the electronic program guide information Mode switching, based on user settings and judgments made on a daily basis, such as determining whether the user has set a fast start mode usage time zone, and whether other fixed time has elapsed since the last user operation. ing. Therefore, when the user is out for a long time during the daytime when there are many programs to watch, or when the user is absent for a long period of time, such as travel, the digital broadcast receiver is not used during that period. Even in this case, there is a problem in that useless power is consumed by switching the mode according to the setting by the user or the determination based on the condition determined every day.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a display device that shortens startup time and does not consume useless power.

  The present invention is a display device having a plurality of standby modes, and includes a control unit that controls selection of a plurality of standby modes when the power is turned off, and the control unit detects the presence / absence of a person and the movement thereof. And a selection unit that selects one of a plurality of standby modes from a plurality of standby modes based on an output of the human sensor and an output of the brightness sensor.

  According to the present invention, a display device having a plurality of standby modes includes a control unit that controls selection of a plurality of standby modes when the power is turned off, and the control unit detects the presence of a person and the movement thereof. And a selection unit for selecting one of the standby modes from a plurality of standby modes based on the output of the human sensor and the output of the brightness sensor. Therefore, when it is determined that there is no possibility of using the display device, such as when there is no day unit or when going out for a long time, that is, when the user is not near the display device, even during a bright daytime, etc. When energy saving is realized and human movement is detected, it is possible to select a standby mode that realizes high-speed activation.

1 is a block diagram showing a configuration of a display device according to a first exemplary embodiment. 4 is a flowchart of the operation of the display device according to the first exemplary embodiment.

<A. Embodiment 1>
<A-1. Configuration>
FIG. 1 is a typical block diagram showing the configuration of a digital broadcast receiving apparatus according to the present invention. As shown in FIG. 1, the digital broadcast receiving apparatus 100 includes a control unit 101, an operation unit 102, and a power supply 12.

  The control unit 101 includes a user control unit 1 such as a switch of the display device main body and a remote controller, a brightness sensor 2 that measures and detects the illuminance around the digital broadcast receiving device 100, and humans around the digital broadcast receiving device 100. A human sensor 3 that detects presence / absence and its movement, a memory 5, and a connection between them, and as a selection unit that selects one of a plurality of standby modes to be described later based on their outputs CPU4.

  The operation unit 102 performs a display operation of the digital broadcast receiving device 100 as a display device, and includes a tuner 6 for receiving terrestrial broadcasting and satellite broadcasting, an external input and output terminal unit 7 for the digital broadcast receiving device 100, and A pre-stage signal processing block 8 connected to the tuner 6 and the terminal section 7 for processing video and audio input / output signals, a pre-stage signal processing block 8, a CPU 4, a flash memory 10 for storing programs and data, and data temporarily A main processor 9 connected to each of the DRAMs 11 stored in the memory, and a post-stage signal connected to the main processor 9 and performing signal processing for supplying the output of the main processor 9 to a display device 14 (LCD, PDP, organic EL) or the like And a processing block 13.

  The CPU 4 in the control unit 101 receives signals from the user control unit 1, the brightness sensor 2, and the human sensor 3, transmits a command from the user to the main processor 9 in the operation unit 102, and the brightness sensor 2, The power source 12 is controlled based on the output of the human sensor 3.

  The pre-stage signal processing block 8 in the operation unit 102 performs a signal interface with the main processor 9 by using signals from the tuner 6 and the terminal unit 7.

  The post-stage signal processing block 13 in the operation unit 102 performs a signal interface with the display device 14 using a signal from the main processor 9.

  The power source 12 supplies electric power from a DC power source necessary for the control unit 101 and the operation unit 102. Here, if the commercial broadcast AC is connected to the digital broadcast receiving apparatus 100, the power supply system 1000 that constantly supplies power to the control unit 101 even in the standby state, and the operation unit 102 under the control of the CPU 4. The power supply system 2000 is connected to the control unit 101, and the power supply system 2000 is connected to the operation unit 102. When the user issues a switching command from the start standby state to the normal use state via the user control unit 1, the power supply system 2000 is turned on by the control from the CPU 4 receiving the signal.

  The main processor 9 in the operation unit 102 downloads the program from the flash memory 10 in which the program is stored, and performs activation processing of signal processing circuits such as the tuner 6, the front signal processing block 8, and the rear signal processing block 13.

<A-2. Operation>
Along with the digital broadcasting of broadcasting, MPEG data encoding and high-definition signal processing require a lot of data processing, which increases the circuit scale and program capacity, and requires more time to start than conventional analog broadcast receivers. However, a time of about several tens of seconds to one minute is required.

  In order to shorten the start-up time, as a plurality of standby modes in the start-up standby state, power is supplied only to the power supply system 1000 to save power consumption, and power is supplied to the power supply system 1000 and the power supply system 2000 to save energy. There is provided a high-speed start-up mode in which the digital broadcast receiver 100 which is a display device can be started up faster than the standby mode.

  In the fast start-up mode, power is supplied to the main processor 9 of the power supply system 2000 and its peripheral circuit, the tuner 6, the front-stage signal processing block 8, the rear-stage signal processing block 13, the flash memory 10, and the DRAM 11, and a program download, Each circuit element is initialized. Therefore, in this mode, when a command to turn on the power is received from the user, it can be instantly activated and viewed.

  FIG. 2 is a flowchart showing the operation of the display device according to the present invention. The operation will be described below with reference to the drawings.

  After the digital broadcast receiving apparatus 100 is turned off (step S1) by operating the remote controller or the main body switch, the CPU 4 in the control unit 101 performs a fast start-up mode for supplying power to the power supply system 1000 and the power supply system 2000. (Step S2).

  The CPU 4 further stores the signal output from the human sensor 3 in the internal memory 5. Then, it is determined whether or not there is a person from the stored information (step S3). Information D for determining whether or not there is a person and the position information P of the person are stored in the memory 5 at an address A determined in advance by a program. Store in (1).

  In the following description, for example, it is assumed that the information D stores “1” when a person is detected, “0” when no person is detected, and the position information P stores its coordinate address number. The position information P when no person is detected is assumed to store a fixed value “0”.

  The CPU 4 performs the same processing on the signal output from the human sensor 3 after the time T1, and stores the information D and the position information P at this time at an address A (2) different from the previous time. This process is repeated N times, and the information D and position information P are written to the address A (N) of the memory 5. Then, the N pieces of data (information D, position information P) stored in the memory 5 are compared. For the output from the human sensor 3 for the (N + 1) th and subsequent times, data is overwritten in the order of addresses A (1) and A (2).

  When the information D is “1”, the difference between the position information P at that time and the next position information P is calculated and summed up. The total value indicates the amount of movement in a certain time. If the value is larger than the reference value M1 (step S4), the digital broadcast receiving device 100 may be operated. Control is performed to set the mode (step S2). If it is already in fast startup mode, it is maintained.

  When all the information D that is the determination information of the person detection is “0” (step S3), that is, when it is determined that there is no person, or the total difference data of the position information P is lower than M1. In the case (step S4), the process proceeds to step S5. Here, the case where the sum of the difference data of the position information P is lower than M1, that is, the case where the frequency of movement is low, assumes that a person is sleeping in a spatial range that can be detected by the human sensor 3. When the probability of using the digital broadcast receiving apparatus 100 is low, the reference value M1 is set in order to prevent inappropriate behavior (such as switching to the fast startup mode) due to turning over at that time.

  In step S5, using a clock function provided in the CPU 4, it is determined whether or not the current time is T0 (for example, 0:00 to 6:00) preset as a time zone with low usage frequency. If the time is T0, which is a time zone where the frequency of use is low, the CPU 4 determines, based on the signal output from the brightness sensor 2, whether it is lower than a reference value L1 indicating a state where the illumination is turned off or a dim state. (Step S6). This is a reference value for determining whether the light is turned off for sleeping or going out.

  When the time zone is T0 and the detection value of the brightness sensor 2 is L1 or less (step S6), whether or not the time during which the movement amount by the human sensor 3 is equal to or less than M1 continues for T1 or more. Is determined (step S7). If it continues for T1 or more, it is determined that the probability of viewing is low, and the process proceeds to the energy saving standby mode (step S9). If it has not continued for T1 or more, the process returns to B and performs processing for detecting a person (step S3).

  If the time zone is other than T0, or if the surrounding brightness is L1 or more, it is determined whether or not the time during which the movement amount of the human sensor 3 for a certain time is M1 or less continues for T2 or more. If the condition is satisfied (step S8), the process shifts to the energy saving standby mode (step S9). If it does not continue for T2 or more, the process returns to B to detect people (step S3).

  Also, by dividing the judgment flow of the result of observing the change in the output of the human sensor 3 according to the time zone, it becomes possible to individually adjust the ease of transition to each mode in the start-up standby state. A function that enables selection between energy saving priority and operability priority by setting the time zone will be described.

  When the energy saving standby mode is entered (step S9), the CPU 4 determines whether the current time is a time zone T0 that is not frequently used by using a clock function provided in itself (step S10), and brightness. The sensor 2 and the human sensor 3 are constantly monitored.

  If the current time is a time period T0 where the usage frequency is low, the data of the brightness sensor 2 is analyzed (step S11). The output value of the brightness sensor 2 is observed by the CPU 4 for a fixed period, the output value of each time is stored in the RAM in the CPU 4, and the difference between the current output value and the output value observed before that is calculated. As for the value of RAM, the output value is sequentially updated before and after the current value, and the instantaneous change in brightness is calculated for each measurement. If the difference becomes L3 or more, the lighting is turned on or the night is It means that the change in the environment has become large, such as when the surroundings become brighter after dawn, and it is assumed that the probability that the digital broadcast receiving apparatus 100 will be used is high. S2).

  If the change in brightness is less than or equal to L3 (step S11), the motion sensor 3 detects the amount of movement for a certain period of time (step S13), and if this exceeds the reference value M3, the process returns to A and enters the high-speed startup mode. Transition is made (step S2). If M3 is not exceeded, the process returns to C and processing is performed (step S10).

  If the time zone is other than the less frequently used time zone T0 (step S10), the motion sensor 3 detects the amount of movement for a certain time, and if the value exceeds the reference value M2 (step S12), Returning to A, the mode shifts to the high speed startup mode (step S2). If the amount of movement does not exceed M2 (step S12), the process returns to C and processing is performed (step S10). Again, by setting the sensitivity of the human sensor 3 individually according to the detection time zone, an effect of suppressing misrecognition of the amount of movement due to various behaviors during sleep can be expected.

  The definition of a time zone with low usage frequency is a midnight time zone (AM 0 to 6 o'clock, etc.) as a standard setting, but the function for setting the time can be changed according to the user's preference. Furthermore, the time zone according to the usage of the user can be set by the function described below.

  For example, the time when the power of the digital broadcast receiving apparatus 100 is turned on is stored in the memory 5 together with the date. From this, a usage pattern unique to the user is learned in association with the day of the week, the season, etc., and a prediction close to the actual usage state of the user is performed, and the usage frequency information for each time zone whether the usage frequency is low or high is obtained.

  In addition, regarding the method of detecting the amount of movement of the person by the human sensor 3, the accuracy can be improved by considering the determination method according to whether the person is present or not present as follows.

  In general, since the human sensor 3 uses infrared rays, the infrared rays (heat sources) that are the same as humans cannot be distinguished from real people. Therefore, when there is movement in the heat source, it is determined that there is a person.

  In the present invention, in order not to determine that there is a person due to movement such as turning over when the person is sleeping, the presence or absence of movement in a certain time in units of several seconds is counted, and an appropriate value is set so as not to cause misrecognition. .

<A-3. Effect>
According to the first embodiment of the present invention, a display device having a plurality of standby modes includes a control unit 101 that controls selection of a plurality of standby modes when the power is turned off. Based on the presence sensor 3 for detecting presence / absence and its movement, the brightness sensor 2 for detecting illuminance, the output of the presence sensor 3, and the output of the brightness sensor 2, any one of a plurality of standby modes is selected. If the CPU 4 is a selection unit for selecting the standby mode, it is determined that there is no possibility of using the display device, such as when there is no day unit or when the user goes out for a long time. If it is not near, it is possible to select the energy saving standby mode even in a bright daytime or the like, and to select the high-speed startup mode when a person's movement is detected.

  Further, according to the first embodiment of the present invention, in the display device, the plurality of standby modes include the energy saving standby mode and the fast startup mode, and the fast startup mode is faster than the energy saving standby mode. The CPU 4 as the selection unit selects the high-speed start mode when the output of the human sensor 3 exceeds a predetermined value, and selects the high-speed start mode when detecting the movement of the person. Fast startup can be realized.

  Further, according to the first embodiment of the present invention, in the display device, the CPU 4 as the selection unit outputs the brightness sensor 2 and the human sensor when the output of the human sensor 3 does not exceed a predetermined value. By selecting the energy saving standby mode according to the output of 3, when no human movement is detected, the energy saving standby mode can be selected in consideration of predetermined brightness and the power consumption can be suppressed.

  Further, according to the first embodiment of the present invention, the display device further includes the operation unit 102 that performs a display operation of the display device, and the control unit 101 transmits a command from the user to the operation unit 102 to perform control. The power supply system 1000 that is a first power supply system that supplies power to the unit 101 and the power supply system 2000 that is a second power supply system that supplies power to the operation unit 102 are further provided. When selected, power is supplied from the power supply system 1000, and when the high-speed start-up mode is selected in the CPU 4, power is supplied from the power supply system 1000 and the power supply system 2000, so that fast start-up is performed in the high-speed start-up mode. In the energy saving standby mode, power consumption can be suppressed.

  Further, according to the first embodiment of the present invention, in the display device, the control unit 101 further includes the memory 5 that records the time and date information of the power ON, and the CPU 4 that is the selection unit is in the memory 5. Learn the usage frequency for a given time zone based on the power-on time and date information, and select one of the standby modes from multiple standby modes based on the usage frequency, taking into account the usage frequency for each time zone The standby mode can be selected, and the effect of fast start-up and reduction of power consumption can be further enhanced.

  As an application example of the present invention, the present invention can be applied to a television receiver, a recording device incorporating a hard disk, a DVD, and a Blu-ray disc drive device.

  1 User Control Unit, 2 Brightness Sensor, 3 Human Sensor, 4 CPU, 5 Memory, 6 Tuner, 7 Terminal, 8 Front Signal Processing Block, 9 Main Processor, 10 Flash Memory, 11 DRAM, 12 Power Supply, 13 Back Signal processing block, 14 display device, 100 digital broadcast receiver, 101 control unit, 102 operation unit, 1000, 2000 power supply system.

Claims (5)

A display device having a plurality of standby modes,
A control unit that controls selection of the plurality of standby modes when the power is turned off;
The controller is
A human sensor that detects the presence and movement of a person,
A brightness sensor to detect illuminance;
A selection unit that selects one of the standby modes from the plurality of standby modes based on the output of the human sensor and the output of the brightness sensor;
Display device. The plurality of standby modes include an energy saving standby mode and a fast startup mode,
The fast startup mode is a mode in which the display device can be started faster than the energy saving standby mode,
The selection unit selects the fast start mode when the output of the human sensor exceeds a predetermined value.
The display device according to claim 1. The selection unit selects the energy-saving standby mode according to the output of the brightness sensor and the output of the human sensor when the output of the human sensor does not exceed a predetermined value.
The display device according to claim 2. An operation unit for performing a display operation of the display device;
The control unit transmits a command from a user to the operation unit,
A first power supply system for supplying power to the control unit;
A second power supply system for supplying power to the operating unit;
When the energy saving standby mode is selected in the selection unit, power is supplied by the first power supply system,
When the selection unit selects the fast startup mode, power is supplied from the first power supply system and the second power supply system.
The display device according to claim 2 or 3. The control unit further includes a memory for recording information on time and date of power ON,
The selection unit learns the usage frequency of a predetermined time zone based on the time and date information of the power-on in the memory, and selects one of the standby modes from the plurality of standby modes based on the usage frequency ,
The display apparatus in any one of Claims 1-4.

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