KR0131428B1 - Tv power control apparatus and method therefor - Google Patents

Abstract

The apparatus for controlling a cutting-off of power in a television receiving set comprises an operation sensing part for sensing a motion of the human body and providing its corresponding electric signal; a controlling part which includes a comparator for receiving the electric signal of the operation sensing part and comparing it with a predetermined value, and also includes a signal generator for generating a power-off signal used for shielding a supply of power in response to a first state output of the comparator; and a power supplying part for cutting off power provided to the receiving set in response to the controlling part and the power-off signal.

Description

Power Control Unit and Method of TV Receiver

1 is a device block diagram of a television receiver according to the present invention.

2 is a flowchart of a power supply control operation according to FIG.

The present invention relates to a power supply control apparatus and method related to a system such as electrical and electronic products, and more particularly, to automatically control the power provided to each part of the system according to the degree of movement of a user in a system such as a television receiver. It relates to a device and a method capable of.

Generally, a system such as a television receiver or the like has a device for turning on or off a power supply in response to a user command applied from the outside. Such a device is always kept on or off regardless of whether the user is watching the system or not. For example, if the user falls asleep or leaves the system while watching the video and audio provided by the system while the system is on, the system will continue to operate. In such a case, the user should always pay attention to the power off of the system, and if the user forgets to power off the system, there is a problem of quickly returning from a remote place from the system. In addition, if you fall asleep, you hear a loud noise after the end of the broadcast is a troublesome problem to turn off the power. In addition, the normal operation of the system in an unnecessary state causes an increase in the electric charge, thereby burdening the user. Therefore, the power supply of the conventional system has the above problem. Therefore, it is an object of the present invention to provide an apparatus which can solve the conventional problems as described above. Still another object of the present invention is to provide an apparatus and a method capable of detecting an absence of a user and automatically shutting off the power of the system in the absence. It is still another object of the present invention to provide a power control apparatus and method capable of adaptively controlling power supplied to a system automatically according to the degree of movement of a user who operates the system.

Still another object of the present invention is to provide a television receiver that can be applied to security by providing an automatic power supply operation by detecting the movement of the human body after the automatic power off. The apparatus of the present invention for achieving the above object and the motion sensing unit for detecting the movement of the human body to provide an electrical signal corresponding thereto; A controller configured to generate a power cutoff signal for shutting off power supply when the electrical signal of the operation sensing unit is continuously smaller than a preset value for a predetermined time; And a power supply unit which cuts off power provided to the receiver in response to the power off signal of the control unit. Here, the motion sensing unit may sense the degree of movement of the user by detecting an energy difference between the infrared rays emitted from the human body and the infrared rays emitted from the user's surroundings. Therefore, according to the configuration of the present invention, by attaching the sensor at a predetermined position of the television receiver and checking the degree of movement of the user at regular intervals, the power supply is automatically stopped when the user sleeps or leaves the seat. I can do it.

In addition, according to the method of the present invention for achieving the above object, the step of sensing the movement of the human body by the sensor and providing an electrical signal corresponding thereto; Comparing the electrical signal with a preset setting value; Generating a command for shutting off a specific power provided to a system when the electrical signal is continuously lower than the set value for a preset time and putting the system into a standby mode; Comparing the newly provided electrical signal from the sensor with the set value in the standby mode of the system; Checking whether an external input is received for a predetermined time when the electrical signal is smaller than the set value; The step of providing a power supply to the power supply for shutting off the power supply of the system in the absence of the external input. The above steps can be implemented by a hardware circuit, but in terms of manufacturing cost, it is preferable to program in a nonvolatile memory such as a ROM to be achieved by a microcomputer or the like. Hereinafter, the power supply control apparatus according to the preferred embodiment of the present invention will be described with the drawings shown as being connected to the system of the television receiver. In the following description, the detailed items for such configurations are described in detail in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced without these specific details. Moreover, features and functions of well-known structures are not described in detail in order not to obscure the present invention. Referring to FIG. 1 to more easily explain the power supply control device according to the present invention, the power supply control device including the sensor portion 16, the interface portion 14, and the microcomputer 10 is connected to a television receiver. In the part related to this embodiment, the television receiver typically has a tuner 2, an intermediate processor 4, a voice and video processor 6, 8 and a power supply 12. In addition, the receiver has a microcomputer, which can be used in parallel with the microcomputer 10 in the present embodiment. In other words, it is preferable to combine the control related to the power supply control device with the control of all operations required for watching television as one microcomputer. Therefore, the microcomputer 10 controls each unit of the receiver in response to an external signal applied from the user's remote controller. The external signal includes a power on or off signal, a broadcast channel selection signal, and a voice level control signal. The tuner 2, the intermediate processor 4, the voice processor 6, the video processor 8, and the speaker and the CRT (Cathod Ray Tube) each have unique functions and are well known in the art. The sensor unit 16 in the power control device is an operation sensor for detecting the degree of movement of the user or human body. A preferred sensor for the implementation of this embodiment may be a Freelel lens type IMC-S7801-02 module of MURATA MFG. CO., LTD. Of Japan. According to the above module, it has 18 detection areas based on the energy difference between the infrared rays emitted from the user's surroundings and the infrared rays emitted from the human body, and is given the ability to detect human fine movement outside 5 meters. Accordingly, the microcomputer 10 receives the electrical signal of the sensor unit 16 applied through the interface unit 14, determines the movement of the human body according to the level of the electrical signal, and the user who is currently watching television falls asleep or goes out. Whether or not you are watching or watching. In addition, if the user thinks that the receiver is too sensitive due to the determination of the microcomputer, the user can adjust the motion of the human body more insensitively through the variable resistance VR. The interface unit 14 has an amplifying function when the electrical signal provided from the sensor unit 16 is weak and provides a high or low level voltage that can be recognized by the microcomputer 10. In addition, the microcomputer 10 performs an operation according to the flow of FIG. 2 in response to the external signal and the electrical signal provided from the interface unit 14. The power off signal output from the microcomputer 10 is generated when it is determined that there is no movement of the user or the human body for a predetermined time. Even in this case, for the convenience of the user, in the present embodiment, the power mode is divided into two modes, namely, a mode in which all power except the power applied to the microcomputer 10 is turned off. This prevents the user from having to operate the power on switch again when the user falls asleep for a short time and wakes up or immediately returns from the outside to the receiver. That is, in the standby mode, the audio processor 6 is powered off and a part of the video processor 8 is powered off so that only a blue background screen can be provided. To this end, the power supply unit 12 connected to the power input stage can be separately designed, and it is sufficient if the well-known power supply unit 12 is already designed for the situation. The microcomputer 10 supplies a parallel control signal to the power control output terminal P. Here, the parallel control signal is a part of the power off signal output in the standby mode or the power off signal provided in the power off mode. In the following, the operation of one embodiment of the invention will be described according to FIG. 2 shown based on the above configuration. Referring to FIG. 2, the microcomputer 10 turns on the television receiver of FIG. 1 by applying a power-on signal to the power supply 12 in response to an external signal applied thereto. For convenience of description, step 200 assumes that the receiver is already turned on. In operation 202, the microcomputer 10 receives detection data from the sensor unit 16 through the interface unit 14. Here, the detection data is the electrical signal provided by the sensor unit 16. After receiving the detection data, the microcomputer 10 stores the data in an internal RAM area in step 204 and reads out a set value stored in a memory such as an internal ROM, and compares the detected data with the stored detection data. In step 204, step 206 or 200 is performed according to the result of the comparison. In other words, if the detected data is smaller than the set value, there is no movement of the human body. If the detected data is larger, the viewer is watching the receiver. If watching, the 200th step is maintained. In this case, therefore, power is applied to each part of the receiver through the power supply 12. On the other hand, if there is no movement of the human body step 206 begins to be performed. Step 206 is a step of counting time, which may be performed by the watchdog or timer function of the microcomputer 10. The reason for checking the lapse of a predetermined time in step 206 is to prevent an immediate power off even if the electrical signal is smaller than the set value. When the time of about 3 minutes has elapsed in step 206, step 208 is performed. Step 208 is a step of generating a command for shutting off a specific portion of power and switching the receiver to a standby mode. In this standby mode, the power provided to the receiver is partially cut off. This reason is for operating the receiver in two modes. In step 210, the same operation as that in step 204 is performed. The detection data received at this time is an electrical signal of the sensor unit 16 provided at another time point. If the detection data is large in step 210, the process returns to step 200. This is achieved by the microcomputer 10 releasing some of the power off signal to the power supply 12. Step 212 is a step of checking the user's input for a predetermined time. For example, if the user generates a power-on signal or a channel tuning signal again, there is no reason to turn off the power. Step 214 is a step for blocking all power supply except for the operating power of the microcomputer 10 when there is no external input. This is done by the microcomputer 10 providing the power off signal to the power supply 12.

Additionally, step 200 may be performed even if an external intruder occurs in step 210. Therefore, during the standby mode, the outside intruder will suddenly disappear when the screen is restored normally in a relatively quiet room and the voice is output through the speaker. This makes it clear that the effects of the present invention can also be applied for security purposes.

According to the present invention as described above, it is possible to automatically cut off the power of the device that is not used or viewed, there is an advantage of preventing the waste of power. In addition, the consumer's satisfaction is improved when applied to a television receiver, the above-mentioned conventional problems can be solved without any special burden of manufacturing cost, and all of the above objects can be achieved.

As described above, the present invention has been described and limited by way of example with reference to the drawings, but the same can be changed and modified in various ways without departing from the technical idea of the present invention for those skilled in the art. Will be obvious.

Claims (10)

An apparatus for controlling power cut-off of a television receiver, the apparatus comprising: an operation sensing unit for detecting a movement of a human body and providing an electrical signal corresponding thereto; A controller configured to generate a power cutoff signal for shutting off power supply when the electrical signal of the operation sensing unit is continuously smaller than a preset value for a predetermined time; And a power supply to cut off power provided to the receiver in response to the power off signal of the controller. The apparatus of claim 1, wherein the motion sensing unit comprises an infrared sensor. The apparatus of claim 2, wherein the power off signal is a parallel control signal including a part of a power off signal output in a standby mode and a main power off signal provided in a power off mode. The apparatus of claim 3, wherein the operation sensing unit further comprises an external variable selector capable of varying the level of the electrical signal. The apparatus of claim 4, wherein the motion sensing unit further comprises an interface unit having weak amplification and interfacing functions of the electrical signal. A control method for adaptively blocking power supplied to a home appliance having a sensor and a power supply unit according to an operation degree of a human body; Sensing the movement of the human body by the sensor and obtaining an electrical signal corresponding thereto; Comparing the electrical signal with a preset setting value; Generating a command for shutting off a specific power provided to the home appliance when the electrical signal is continuously lower than the set value for a preset time and switching the product to a standby mode; Comparing the newly provided electrical signal from the sensor with the set value in the standby mode of the product and checking whether an external input is received for a predetermined time when the electrical signal is smaller than the set value; And providing a power off signal to the power supply to cut off the power supply of the product in the absence of the external input. 7. The method of claim 6, wherein the electrical signal is generated by an infrared sensor of a Fresnel lens type. 8. The method of claim 7, wherein the command for shutting off the specific power source is applied to a part in charge of the main operation function of the product. A control method for adaptively cutting off power supplied to a television system having a sensor and a power supply unit according to an operation degree of a human body; Sensing the movement of the human body by the sensor and obtaining an electrical signal corresponding thereto; Comparing the electrical signal with a preset setting value; And applying a command to the system to cut off power provided to the system when the electrical signal remains continuously smaller than the set value for a preset time. A power supply control apparatus for an apparatus for processing an image signal, comprising: photoelectric conversion means for generating an electrical signal in response to an energy difference between infrared rays generated from a human body and infrared rays generated from a periphery of the human body; A first comparator for receiving the electrical signal and comparing it with a preset setting value, and a command for shutting off a specific power provided to the device when the electrical signal is continuously smaller than the preset value for a preset time; Means for generating and converting the device into a standby mode, a second comparator for comparing the electrical signal newly provided from the photoelectric conversion means in the standby mode of the device with the set value again; And a means for checking whether a user input is received within a predetermined time when the value is smaller than the value, and means for providing a power supply to a power supply to turn off the power supply of the apparatus in the absence of the external input. Control means; And power supply means for interrupting power provided to the device in response to the specific power off command and the power off signal of the control means.