Abstract:
A broadcasting signal receiving system includes: an obtaining part for obtaining program information of a receiving program; a broadcasting signal receiving part for receiving a broadcasting signal to obtain a video signal and an audio signal or a recorded image reproducing part for reproducing a previously recorded program to obtain a video signal and an audio signal; an image pick-up part for recording an image of a viewer; a certifying part for comparing the image with the previously registered image of a face of an individual to certify the viewing individual; an illumination intensity detecting part for detecting the brightness of a viewing space; and a viewing improvement control part for controlling the improvement of viewing on the basis of the certified result by the certifying part, a kind of the receiving program and the illumination intensity of the viewing space.

Description:
BACKGROUND OF THE INVENTION  
       [0001]     1. Field of the Invention  
         [0002]     The present invention relates to a broadcasting signal receiving system, and more particularly to a broadcasting signal receiving system on which a protecting function is installed for preventing a hyper-sensitivity to light that is apt to occur in such a case that infants view an animation program in a dark place.  
         [0003]     2. Description of the Related Art  
         [0004]     Usually, a technique that information such as a video or an audio and a character is broadcast or distributed by an analog system or a digital system has been provided and a device for receiving these information and having various functions added has been proposed (for instance, see JP-A-2001-333030 and JP-A-2001-16514).  
         [0005]     The JP-A-2001-333030 discloses a broadcasting program transmitting and receiving system for controlling peripheral devices such as an air conditioner or an illuminating device in accordance with the contents of a broadcasting program. For instance, when a scene appears in the broadcasting program in which the brightness of a room needs to be adjusted (for instance, a horror scene in which a ghost or a monster appears), an illuminating light of a lamp is controlled to be dark or turned off so as to meet the program data of the scene. Further, JP-A-2001-16514 discloses a device that recognizes a viewer and switches a channel, gives a warning or turns off a power, when the viewer is an infant or a minority and a scene is displayed that gives an educationally bad influence to the viewer.  
       SUMMARY OF THE INVENTION  
       [0006]     According to the system disclosed in JP-A-2001-333030, an exciting viewing environment can be provided to the viewer. Further, in the device disclosed in JP-A-2001-16514, when the viewer is the infant or the minority, a program that gives the educationally undesirable effect to the viewer can be limited.  
         [0007]     However, both the related arts do not consider a prevention of a hyper-sensitivity to light that is liable to occur when a child views an animation program in a dark place. As for the hyper-sensitivity to light for children, production companies for producing animations provide a fixed standard to produce the animations. However, since viewing environments are different in homes respectively, the hyper-sensitivity to light for the children cannot be completely prevented only by the countermeasure of the production companies for producing the animations.  
         [0008]     The present invention is proposed by considering the above-described problems and it is an object of the present invention to provide a broadcasting signal receiving system on which a protecting function is installed for preventing the generation of a hyper-sensitivity to light that is apt to occur in such a case that infants view an animation program in a dark place.  
         [0009]     A broadcasting signal receiving system of the present invention comprises: an obtaining part for obtaining program information of a receiving program; a broadcasting signal receiving part for receiving a broadcasting signal to obtain a video signal and an audio signal or a recorded image reproducing part for reproducing a previously recorded program to obtain a video signal and an audio signal; an image pick-up part for recording an image of a viewer; a certifying part for comparing the image of the face of the viewer recorded by the image pick-up part with the previously registered image of a face of an individual to certify the viewing individual; an illumination intensity detecting part for detecting the brightness of a viewing space; and a viewing improvement control part for controlling the improvement of viewing on the basis of the certified result by the certifying part, a kind of the receiving program based on the program information or a kind of a reproduced program and the illumination intensity of the viewing space by the illumination intensity detecting part. In this case, since a camera as the image pick-up part ordinarily has a function for detecting the brightness of an object to be shot, the camera as the image pick-up part may be also used as the illumination intensity detecting part.  
         [0010]     When three conditions are satisfied that the certified result by the certifying part designates a preset child, the kind of the receiving program is an animation program and the illumination intensity of the viewing space detected by the illumination intensity detecting part is not higher than a preset illumination level, the viewing improvement control part performs a control of the improvement of viewing. Here, the control of the improvement of viewing specifically indicates a control including a warning process for displaying a message to make the illumination of a room brighter on a monitor screen. As an environment for viewing the animation program, when the illumination is dark, a warning for making the illumination of the room brighter is displayed on the monitor screen. Thus, for instance, when a parent is present there, the parent noticing the warning can immediately change the viewing environment by making the illumination of the room brighter.  
         [0011]     Further, the broadcasting signal receiving system of the present invention further comprises a control signal transmitting part for transmitting a control signal for controlling an illumination intensity to an illuminating device disposed in the viewing space. When the illumination intensity of the illuminating device is not higher than a preset illumination level, the viewing improvement control part may, as the control of the improvement of viewing, control the control signal to be transmitted to the illuminating device so as to raise the illumination intensity of the illuminating device to the preset illumination level. As a control for raising the illumination intensity of the illuminating device to the preset illumination level, a control is also included for simply turning on (turn on a power) the illuminating device that is turned off. Further, since a recent illuminating device includes such a device whose brightness is changed in a step-less way, this kind of illuminating device can control the illumination intensity thereof to be raised to the preset illumination level. As described above, the individual is certified by the certifying part so that the viewer can be automatically specified and the brightness of the room during viewing the program that has been usually controlled by the protector can be controlled even when the protector is not present.  
         [0012]     Still further, as the control of the improvement of viewing, when a sound volume exceeds a preset sound volume level, the viewing improvement control part may control the sound volume to be lowered to the preset sound volume level. Generally, infants or children of the lower classes of an elementary school frequently view a broadcasting program by raising the sound volume. In this case, from the viewpoint of a hyper-sensitivity to light, the sound volume seems to be hardly related to the hyper-sensitivity to light. However, in a sense of stimulating the brain of a child, as the sound volume grows large, the brain of the child is the more stimulated as in the case of the hyper-sensitivity to light. Therefore, even if the sound volume is not a direct cause of the hyper-sensitivity to light, in a sense of reducing the stimulation to the brain of the child, not only the illumination is made to be brighter, but also the sound volume is lowered, so that factors for causing the hyper-sensitivity to light can be anticipated to be reduced.  
         [0013]     Still further, the broadcasting signal receiving system of the present invention may further comprise a communication part for performing a unidirectional communication or a bi-directional communication with other electronic devices through a communication line. Then, when three conditions are satisfied that the certified result by the certifying part designates a preset child, the kind of the receiving program is an animation program and the illumination intensity of the viewing space detected by the illumination intensity detecting part is not higher than a preset illumination level, the viewing improvement control part may transmit a message for making the illumination of the room brighter to other electronic devices through the communication line. In this case, other electronic devices may include a personal computer, a portable telephone, a PDA or a television receiver disposed in other room of a building. Especially, even when the parent goes out, the parent usually often carries the portable telephone. Thus, the portable telephone is informed of the state of a viewing environment of the child, so that even when the parent goes out, the parent can instruct the child to make the illumination of the room brighter by calling home on the phone.  
         [0014]     According to the broadcasting signal receiving system of the present invention, the individual is certified by the certifying part so that the viewer can be automatically specified and the brightness of the room during viewing the program that has been usually controlled by the protector can be controlled even when the protector is not present. Thus, the generation of a hyper-sensitivity to light can be prevented that is apt to occur in such a case that infants view an animation program in a dark place. 
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0015]     These and other objects and advantages of this invention will become more fully apparent from the following detailed description taken with the accompanying drawings in which:  
         [0016]      FIG. 1  is a functional block diagram showing the entire structure of a broadcasting signal receiving system of the present invention;  
         [0017]      FIG. 2  is a flowchart showing a viewing improvement control process according to an embodiment 1 of the broadcasting receiving system of the present invention; and  
         [0018]      FIG. 3  is a flowchart showing a viewing improvement control process according to an embodiment 2 of the broadcasting receiving system of the present invention.  
     
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS  
       [0019]     Now, embodiments of the present invention will be described with reference to the drawings.  
         [0020]      FIG. 1  is a functional block diagram showing the entire structure of a broadcasting signal receiving system of the present invention.  
         [0021]     A broadcasting signal receiving system  1  includes an input terminal  11   a  for inputting a broadcasting signal received by an antenna not shown in the drawing and a tuner part  11  is connected to the input terminal  11   a . An output of the tuner part  11  is connected to a video decoder  12  for converting a digital video signal to an analog video signal and connected to an audio decoder  13  for converting a digital audio signal to an analog audio signal. Further, the output of the vide decoder  12  is connected to a video input and output terminal  1   a  of a VCR (video cassette recorder)  17  and to a video input terminal  15   a  of a TV monitor  15  through an OSD (on screen display) circuit  14 . Further, the output of the audio decoder  13  is connected to an audio input terminal  15   b  of the TV monitor  15  and to an audio input and output terminal  1   b  of the VCR  17 .  
         [0022]     The output of the tuner part  11  is connected to an EPG data accumulating part (RAM or EEPROM)  16  for temporarily accumulating the latest electronic program guide (EPG) data included in the received broadcasting signal.  
         [0023]     A control part  18  is composed of a CPU, a ROM, a RAM or the like whose illustrations are omitted and controls the tuner part  11 , the video decoder  12 , the audio decoder  13  and the OSD circuit  14 , respectively. Further, to the control part  18 , a data search part  19  for searching the EPG data accumulated in the EPG data accumulating part  16  is bi-directionally connected. The control part  18  controls the data search part  19  at a suitable timing to search the EPG data accumulated in the EPG data accumulating part  16 .  
         [0024]     Further, to the control part  18 , a key input part  21  is connected for inputting various kinds of key operating signals to the control part  18 . To the key input part  21 , an output of a receiving part  22  is connected for receiving a key operating signal from a remote controller  23 . That is, the key input part  21  not only inputs the operating signals of various kinds of keys (buttons) provided on a front surface panel of a device main body to the control part  18 , but also inputs the key operating signal from the remote controller  23  received by the receiving part  22  to the control part  18 . Further, to the control part  18 , a below-described timer part  28  for measuring a prescribed time is connected.  
         [0025]     In the device main body, a camera part (CCD camera part)  25  as a shooting part for shooting a viewer is provided. The output of the camera part  25  is connected to an individual certifying part  26  for certifying an individual on the basis of a shot image and an illumination intensity detecting part  27  for detecting a viewing environment of a room, that is, a brightness of a room on the basis of the shot image. A certified result in the individual certifying part  26  and the illumination intensity information of the room by the illumination intensity detecting part are inputted to the control part  18 .  
         [0026]     Further, a communication part  29  that can perform a unidirectional communication or a bi-directional communication with other electronic devices  40  is connected to the control part  18 . For instance, when other electronic devices are domestic electric products and the electric products are connected together by a network (domestic LAN), the communication part  29  serves as a communication part to be connected to the network. For instance, when the electronic device is a portable telephone, the communication part  29  serves as a communication part to be connected to a portable telephone network. Here, the domestic electric products include, for instance, kitchen equipment such as a refrigerator, a microwave range and AV devices such as a television receiver disposed in other rooms and illumination devices respectively disposed in rooms. For embodiment, when the illumination device is connected to the control part through the communication part  29 , the illumination device can be controlled to be turned on and off or the brightness of the room can be adjusted by changing the illuminating light.  
         [0027]     In the above-described structure, in the individual certifying part  26 , information showing the physical features of all the members of a family (only the information of infants or children may be stored) is previously stored in an inner memory not shown in the drawing. As a storing method of the information, for instance, a menu button of the remote controller  23  not shown is operated to select a register mode of recognizing information. The register mode of the recognizing information means a mode for storing the feature information of an object to be shot that is recognized by the individual certifying part  26 .  
         [0028]     Specifically explained, for instance, when the recognizing data of a child is formed, the face of the child is shot with a distance spared that is designated from the camera part  25 . The individual certifying part  26  forms child recognizing data on the basis of the shot image of the face. Since an image recognizing technique is usually known, a detailed description thereof is omitted herein. The child recognizing data (feature data) is stored in the inner memory. The individual certifying part  26  subsequently certifies a specific individual on the basis of the certifying data stored in the inner memory.  
         [0029]     In this embodiment, the illumination intensity detecting part  27  detects the brightness of the room (illumination level) on the basis of an image shot by the camera part  25 . However, an illumination intensity detecting part for detecting only the brightness of a room may be provided separately from the camera part  25 . Since the detection of the illumination intensity is a known technique, a detailed description thereof will be omitted herein.  
         [0030]     The control part  18  performs a control of an improvement of viewing in accordance with a certified result by the individual certifying part  26 , a kind of a receiving program based on the EPG data accumulated in the EPG data accumulating part  16  and the illumination intensity of a viewing space by the illumination intensity detecting part  27 . Now, specific embodiments of the control of the improvement of viewing will be described below.  
         [0031]      FIG. 2  is a flowchart showing a viewing improvement control process of an embodiment 1. Now, referring to this flowchart, the procedure of the viewing improvement control of the embodiment 1 will be described below.  
         [0032]     For instance, when a power of a television is turned on by the remote controller  23 , the control part  18  controls the camera part  25  to shoot a viewer (step S 1 ). The individual certifying part  26  compares the image of the face of the viewer shot by the camera part  25  with the image of the face of the child previously registered in the inner memory to certify the viewer and store the certified result in the inner memory not shown in the drawing (step S 2 ).  
         [0033]     Under this state, the control part  18  searches the EPG data accumulating part  16  by the data search part  19  to decide whether or not a currently received broadcasting program or a reproduced program by the VCR  17  is ah animation program (step S 23 ). This decision is carried out, for instance, when the power of the television is turned on by the remote controller  23 , during the reproducing operation of the VCR  17  or during switching the channel of the received broadcasting program. As a result, when the currently received broadcasting program or the currently reproduced program is the animation program (when it is decided to be Yes in the step S 23 ), then, the certified result stored in the inner memory is referred to decide whether or not the certified viewer is a child (step S 24 ). As a result, when the viewer is not the child (when it is decided to be No in the step S 24 ), an operation is moved to step S 27  to continuously broadcast the animation program as it is.  
         [0034]     On the other hand, when the viewer is the child (when it is decided to be Yes in the step S 4 ), then, the brightness of the room as the viewing space is detected by the illumination intensity detecting part  27  (step S 5 ) to decide whether or not the brightness of the room is a preset and prescribed illumination level (level of brightness under which even when the child views the animation program, the child does not seem to have a hyper-sensitivity to light) or higher (step S 6 ). Consequently, when the brightness of the room is not lower than the prescribed illumination level (when it is decided to be Yes in the step S 6 ), a viewing state is continuously kept (step S 7 ).  
         [0035]     On the other hand, when the brightness of the room is not higher than the prescribed illumination level (when it is decided to be No in the step S 6 ), a message for making the illumination brighter is displayed on the screen of the TV monitor  15  (step S 8 ). Further, the control part  18  starts to measure a preset and prescribed time (for instance, one minute) by the timer part  28  (step S 9 ) to decide whether or not the illumination of the room is made to be brighter during the measurement, that is, whether or not the brightness of the room is adjusted to the prescribed illumination level or higher (step S 10 ). Then, when the illumination of the room is made to be brighter before the a prescribed time elapses (when it is decided to be No in the step S 9  and Yes in the step S 10 ), the message displayed together with an animation image on the screen of the TV monitor  15  is erased to move to the step S 7  and continuously broadcast the animation program.  
         [0036]     On the other hand, the illumination of the room is not brightened even when a prescribed time elapses (when it is decided to be Yes in the step S 9 ), the control part  18  decides that a viewing environment is not improved to limit a viewing (step S 11 ). Here, as a viewing limiting control, may be exemplified a control that the power of the TV is forcedly turned off or a control that a receiving channel is forcedly switched to other program than the animation program.  
         [0037]     In the embodiment 1, the viewing control is carried out when prescribed conditions are satisfied, and processes are completed independently by the system. However, in an embodiment 2, a viewing environment is automatically improved and a device is connected to a domestic LAN through the communication part  29 . Now, the procedure of a viewing improvement control of the embodiment 2 will be described below by referring to a flowchart shown in  FIG. 3 .  
         [0038]     For instance, when a power is turned on by the remote controller  23 , the control part  18  controls the camera part  25  to shoot a viewer (step S 21 ). The individual certifying part  26  compares the image of the face of the viewer shot by the camera part  25  with the image of the face of the child previously registered in the inner memory to certify the viewer and store the certified result in the inner memory not shown in the drawing (step S 22 ).  
         [0039]     Under this state, the control part  18  searches the EPG data accumulating part  16  by the data search part  19  to decide whether or not a currently received broadcasting program or a reproduced program by the VCR  17  is an animation program (step S 23 ). This decision is carried out, for instance, when the power of the television is turned on by the remote controller  23 , during the reproducing operation of the VCR  17  or during switching the channel of the received broadcasting program. As a result, when the currently received broadcasting program or the currently reproduced program is the animation program (when it is decided to be Yes in the step S 23 ), then, the certified result stored in the inner memory is referred to decide whether or not the certified viewer is a child (step S 24 ). As a result, when the viewer is not the child (when it is decided to be No in the step S 24 ), an operation is moved to step S 27  to continuously broadcast the animation program as it is.  
         [0040]     On the other hand, when the viewer is the child (when it is decided to be Yes in the step S 24 ), then, the brightness of the room as the viewing space is detected by the illumination intensity detecting part  27  (step S 25 ) to decide whether or not the brightness of the room is a preset and prescribed illumination level (level of brightness under which even when the child views the animation program, the child does not seem to have a hyper-sensitivity to light) or higher (step S 26 ). Consequently, when the brightness of the room is not lower than the prescribed illumination level (when it is decided to be Yes in the step S 26 ), a viewing state is continuously kept (step S 27 ).  
         [0041]     On the other hand, when the brightness of the room is not higher than the prescribed illumination level (when it is decided to be No in the step S 26 ), the brightness of the illuminating device in the room is adjusted through the communication part  29  and the illumination in the room is set to the prescribed illumination level or higher (step S 28 ). At this time, the control part  18  detects a sound volume transmitted from the TV monitor  15  to decide whether or not the sound volume is a preset and prescribed sound volume level or higher (step S 29 ). As a result, when the sound volume is not higher than the prescribed sound volume level (when it is decided to be No in the step S 29 ), the operation is shifted to the step S 27  to continuously perform a viewing under the same sound volume level. On the other hand, when the sound volume exceeds the prescribed sound volume level (when it is decided to be Yes in the step S 29 ), a volume is adjusted so as to lower the sound volume to the prescribed sound volume level or lower (step S 30 ), and then, the operation is shifted to the step S 27  to continuously view the program under the adjusted sound volume level.  
         [0042]     In the above-described embodiment 2, both the control of the illumination of the room and the control of the sound volume are simultaneously carried out in association with each other. However, only when the illumination of the room is assuredly controlled, the sound volume may not be necessarily controlled. Further, in the embodiment 2, the system is connected to the domestic LAN through the communication part  29 . Accordingly, for instance, when a personal computer is connected to the domestic LAN and warning information is transmitted to the personal computer from the system, a mail can be transmitted or the illumination of the room can be controlled in accordance with the decision of the personal computer side.  
         [0043]     In the above-described embodiment 2, the system of the present invention is connected to the domestic LAN through the communication part  29 . In an embodiment 3, a communication is carried out with a portable communication terminal (for instance, a portable telephone) through the communication part  29 . In the processes of the embodiment 3, a communication with the portable telephone is basically added to the processes of the embodiment 1. Here, only the process of the added part will be described.  
         [0044]     Namely, in the embodiment 3, a process corresponding to the step S 8  in the procedure of the embodiment 1 shown in  FIG. 2  is different from that of the embodiment 1.  
         [0045]     In the step S 8  of the embodiment 1, only the message for making the illumination of the room brighter is displayed on the screen of the TV monitor  15 . However, in the embodiment 3, a message having the same meaning as that of the above message is transmitted to the portable telephone possessed by, for instance, a parent through the communication part  29 . As the message at this time, for instance, such a warning message may be employed that children are going to see a television in a dark room. In this case, the contents of the message may be previously set. The message may be set by the parent or previously registered. Thus, even when the parent goes out, the parent can instruct the children to brighten the illumination of the room, for instance, by calling home on the phone.  
         [0046]     In the embodiment 3, the communication with the portable telephone is added to the processes of the embodiment 1. However, the communication with the portable telephone may be added to the processes of the embodiment 2. That is, when it is decided to be No in the step S 26  of the procedure shown in  FIG. 3 , in other words, when it is decided that the brightness of the room is not higher than the prescribed illumination level, the message may be transmitted to the portable telephone carried by, for instance, the parent through the communication part  29 . As the message at this time, for instance, such a message may be used that children tried to see a television in a dark room, so that the illumination was brightened.  
         [0047]     Further, in the above-described embodiment, according to the explanation, the broadcasting signal is the digital broadcasting signal. However, the present invention may be applied to a case that the broadcasting signal is an analog broadcasting signal. In the case of the analog broadcasting signal, the EPG data of a program table superimposed on a broadcasting radio wave is received or program table data is separately obtained via an internet so that the information of a received program can be obtained by matching a present time with the program table. Further, in the above-described embodiment, the VCR  17  is exemplified as an image recording and reproducing device. However, it is to be understood that a DVD recorder or an HD incorporated DVD recorder may be employed.