JP2007228385A - Television receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a television receiver in which the face of a user is imaged to estimate and register a sound pressure that the user desires, and a set volume level is automatically adjusted to obtain the sound pressure in next use by the user. <P>SOLUTION: Based on a second distance and an estimated sound pressure acquired in s14, a control unit 13 adjusts a set volume level so that a sound pressure at a position of the user becomes the estimated sound pressure (s15) and main processing is finished. Said adjustment is performed while measuring a volume level of an amplified audio signal inputted to a speaker 8 and estimating the sound pressure at the position of the user from the measured volume level. Concretely, based on a second distance Xcm and an estimated sound pressure 40db, the control unit 13 adjusts the set volume level so that the sound pressure at the position of a user 102 becomes the estimated sound pressure 40db corresponding to the face image of the user in a database 14a. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a television receiver that amplifies an audio signal input from an input source and outputs the amplified signal from a speaker, and more particularly to a television receiver that automatically adjusts a volume level.

  Conventionally, a television receiver has a plurality of input sources, for example, a BS broadcast receiving circuit, a connected video player, and a DVD player. The audio signals sent from these input sources are amplified according to the set volume level set by the user using the operation means in the audio amplifier, and then output from the speaker as audio (sound wave). The operation means is, for example, a remote control or an operation key built in the television receiver body.

The sound wave output from the speaker attenuates in proportion to the distance. For this reason, the sound pressure obtained decreases in proportion to the distance. On the other hand, the set volume level is a value set on the television side and does not decrease. Sound pressure is a concept different from the set volume level.
The unit of sound pressure is db (decibel).

  In a conventional television receiver, the user adjusts the set volume level of the television with the operation means so that a desired sound pressure can be obtained at the point where the television is viewed.

On the other hand, a personal computer as described in Patent Document 1 has been proposed. This personal computer includes an operation unit having a distance measurement sensor, a host machine that stores a distance volume table representing a relationship between distance and volume, and a speaker that outputs an audio signal as sound (sound wave). The operation means is a remote control or a keyboard. The host machine measures the distance between the operating means and the host machine using a distance measurement sensor, acquires the volume from the distance measured with reference to the distance volume table, and sets the volume as the set volume level. This volume is an appropriate volume according to the distance.
The host machine emits infrared light to the distance measuring sensor, and measures the time until the distance measuring sensor receives the infrared light reflected by the host machine, whereby the distance between the operating means and the host machine is measured. To get.
JP 2005-309931 A

In other words, however, the user cannot obtain a desired sound pressure unless the user adjusts the set sound volume level with the operation means. In particular, since the location of the remote control is often unknown, the user must first search for the remote control to adjust. Further, when the remote controller is not found, the user has to operate the operation keys built in the TV receiver main body to adjust. As described above, the conventional television receiver has a problem that it is very troublesome for the user.
Further, in Patent Document 1, the set volume level is automatically adjusted according to the distance, but the set volume level is not always the user's desired sound pressure. The desired sound pressure varies from user to user, such that some users prefer large sound pressures and others prefer small sound pressures. For this reason, in Patent Document 1, the set volume level is manually adjusted after all, and the same problem as in the conventional television receiver occurs.

  The present invention is intended to solve such a conventional problem. The user's face is imaged, and the sound pressure desired by the user is estimated and registered. An object of the present invention is to provide a television receiver that automatically adjusts a set volume level so that the above can be obtained.

  The television receiver of the present invention has the following configuration in order to solve the above problems.

(1) audio signal output means for amplifying and outputting an audio signal input from an input source;
In a television receiver comprising a speaker that outputs a sound signal output from the sound signal output means as a sound wave,
An operation means having a user registration key for performing user registration;
Distance measurement imaging means for measuring a first distance from the apparatus main body to the user and imaging the user's face when the user registration key is operated;
When the user registration key is operated, the volume level of the amplified audio signal input to the speaker is measured, and the position of the user is determined based on the first distance measured by the distance measurement imaging unit. A sound pressure estimating means for estimating the sound pressure in as an estimated sound pressure;
A user registration table that registers the user's face image captured by the distance measurement imaging unit and the estimated sound pressure estimated by the sound pressure estimation unit in association with each other;
The distance measurement imaging unit performs measurement of a second distance from the apparatus main body to the user and imaging of the user's face after completion of the user registration,
The sound pressure estimation means determines whether or not a user's face image imaged by the distance measurement imaging means after the user registration is completed is registered in the user registration table. Based on the second distance measured by the distance measurement imaging means and the estimated sound pressure corresponding to the face image of the user in the user registration table, the sound pressure at the user position becomes the estimated sound pressure. Thus, the amplification amount of the audio signal output means is adjusted.

In this configuration, the input source is, for example, a BS broadcast receiving circuit, a connected video player, or a DVD player. The audio signal sent from the input source is amplified according to the set volume level set by the user using the operation means in the audio signal output means, and then outputted from the speaker as sound (sound wave). The operation means is, for example, a remote control or an operation key built in the television receiver body. The unit of volume level and sound pressure is db (decibel). The difference between the volume level and the sound pressure is whether or not sound is propagating in the air.
In this configuration, a scene where the user registers the desired sound pressure in the television receiver (first scene) and a scene after the user registers the desired sound pressure in the television receiver (second scene). Is assumed. The first distance is a distance measured in the first scene, and the second distance is a distance measured in the second scene. In the first scene, the television receiver captures the user's face, estimates the sound pressure desired by the user, and registers the estimated sound pressure in advance. Then, the television receiver automatically adjusts the set volume level so that the estimated sound pressure is obtained in the second scene that the user uses next time.
As described above, there is an effect that the user can obtain the desired sound pressure without using the operation means next time after the desired sound pressure registration.
Note that, before measuring the volume level of the audio signal, the sound pressure estimation means may display an OSD display requesting that the audio be heard at a desired set volume level. The display requesting to listen to the sound at the desired set volume level is, for example, “Register the desired sound pressure from now on. Listen to the sound at the desired set volume level”. The user who sees this display listens to the sound at the set volume level he likes. Thereby, the sound pressure estimating means has an effect that the sound pressure preferred by the user can be estimated more accurately.

(2) The sound pressure estimating means includes:
If there is no change in the face image of the user imaged by the distance measurement imaging means after completion of the user registration, the estimated sound pressure at the user position corresponds to the face image of the user in the user registration table. It is determined whether or not the sound pressure is the same value or an approximate value. If it is determined that the sound pressure is not the same value or the approximate value, the sound pressure at the user's position becomes the estimated sound pressure. Then, the amplification amount of the audio signal output means is adjusted again.

In this configuration, the approximate value may be determined from the viewpoint of whether or not a general user can recognize that the sound pressure has changed. This approximate value is, for example, a value within an absolute value of 5 db.
In this configuration, in particular, it is assumed that the user is the same, but the scene in which the sound pressure has changed significantly due to the switching or commercial of the TV program and the scene in which the TV program is viewed by changing the viewing position by the same user. is doing. The term “significant” refers to a size that allows a general user to recognize that a change has occurred in sound pressure. In this scene, the user has conventionally had to adjust the set volume level with the operation means each time. Therefore, when the sound pressure estimation means determines that the sound pressure at the user's position is not the same value or approximate value as the estimated sound pressure, the sound pressure output means increases the amplification amount of the sound signal output means so that the estimated sound pressure is obtained. Adjust again. That is, the television receiver automatically adjusts the set volume level so that the estimated sound pressure can be obtained.
As a result, even when the sound pressure changes greatly due to switching of TV programs or commercials, the set volume level is automatically adjusted without the user adjusting the set volume level each time using the operating means. . In addition, even when the user changes the viewing position and views a television program or the like, the user can adjust the set volume level automatically without adjusting the set volume level with the operating means each time.

(3) The operation means has a setting key for setting a predetermined timing,
The distance measurement imaging means measures the second distance and images the user's face at the timing set by the setting key.

In this configuration, the predetermined timing is, for example, a power-on, a predetermined time, or a predetermined time interval. The predetermined time is, for example, 13:00. The predetermined time is, for example, 30 seconds, 1 minute, 3 minutes, 5 minutes, 10 minutes, or 1 hour.
In this configuration, the user determines the timing and frequency at which the sound pressure estimation means adjusts the amplification amount.
As a result, the amplification amount is adjusted at the timing and frequency desired by the user.

  According to the present invention, there is an effect that the user can obtain a desired sound pressure without using the operation means next time after the desired sound pressure is registered.

  Hereinafter, a television receiver according to an embodiment of the present invention will be described.

  FIG. 1 is a block diagram showing a main configuration of a television which is an embodiment of the present invention.

  The TV (television) 1 includes a control unit 13 that controls the entire TV 1, a tuner 2 that processes a television broadcast signal, and a video / audio switching unit 3 that separates and extracts a video signal and an audio signal from the television broadcast signal. An OSD processing unit 4 that superimposes a desired OSD on the video signal, a video signal output unit 5 that outputs the video signal to the display unit 6, a display unit 6 such as a CRT that displays video, and a speaker that amplifies the audio signal An audio signal output unit 7 for outputting to 8, a speaker 8 for generating sound (sound wave) to the outside, an operation unit 9 for the user to adjust the set volume level, a storage unit 14 for storing the set volume level, It has.

  The operation unit 9 and the remote controller 11 have a user registration key for performing user registration. The operation unit 9 includes a remote control signal detection unit (not shown). When a command such as power ON / OFF, channel switching, and adjustment of the set volume level is input from the outside to the remote control signal detection unit, the remote control signal detection unit receives a command from the remote control 11. The signal is received and transmitted to the control unit 13.

  The memory | storage part 14 consists of non-volatile memories, and can update the memory content. The storage unit 14 includes, for example, a semiconductor memory and a hard disk. The semiconductor memory is, for example, an EEPROM. The storage unit 14 stores the set volume level. The set volume level is a volume level adjusted (set) by the user using the operation unit 9 or the remote controller 11. The storage unit 14 includes a database 14a.

  The tuner 2 extracts the television broadcast signal of the selected channel from the television broadcast signal received by the antenna 12 and outputs it. The selected channel is designated by the control unit 13.

  The video / audio switching unit 3 separates and extracts the television broadcast signal output from the tuner 2 into a video signal and an audio signal.

  The video signal output from the video / audio switching unit 3 is input to the video signal output unit 5 via the OSD processing unit 4.

  The OSD processing unit 4 includes an OSD image memory (not shown). The OSD processing unit 4 superimposes characters or figures on the video signal based on the control signal given from the control unit 13. The OSD image memory stores these characters or figures.

  The video signal output unit 5 outputs the video signal output by the video / audio switching unit 3, and the display unit 6 displays the video. The display unit 6 is a monitor, for example.

  The audio signal output unit 7 incorporates an audio amplifier (not shown), amplifies the audio signal output from the video / audio switching unit 3 and outputs the amplified audio signal to the speaker 8. The amount of amplification is determined by the control unit 13 and corresponds to the set volume level stored in the storage unit 14. The speaker 8 generates sound (sound wave) outside.

  As described above, the user views a television program or a commercial on the display unit 6 and the speaker 8. TV programs include music programs.

  Note that operating power is supplied to each unit of the TV 1 from a power supply circuit (not shown). The input of this power supply circuit is a commercial power supply (for example, AC 100V).

  The control unit 13 is constituted by a microcomputer, for example. The control unit 13 includes a ROM 13a for storing a control program, a RAM 13b as a work field for developing the control program and the like, and a timer circuit 13c for measuring time or measuring time. The control unit 13 is connected to the camera 101 via the interface 20. The camera 101 is controlled by the control unit 13.

FIG. 2 is a conceptual diagram showing how a user views a television program at a distance Xcm in the television according to the embodiment of the present invention. FIG. 3 is a conceptual diagram showing how a user views a television program at a distance of 2 × cm in the television.
The camera 101 is, for example, a CCD camera. The camera 101 images the user 102 and transmits the image data of the user 102 to the TV 1 (see FIG. 1). The camera 101 transmits the image data to the TV 1 as it is, but the image data may be transmitted after being compressed in consideration of the transfer speed between the TV 1 and the camera 101.
In addition, 40 db in the figure is a sound pressure obtained by the user 102 at a position of a distance Xcm or 2Xcm.

  Returning to FIG. 1, the control unit 13 receives the image data of the user 102 via the interface 20.

  Here, the control unit 13 corresponds to “sound pressure estimating means” of the present invention. The camera 101 and the control unit 13 correspond to the “distance measurement imaging unit” of the present invention. The database 14a corresponds to the “user registration table” of the present invention. The antenna 12 corresponds to the “input source” of the present invention.

  FIG. 4 is a flowchart showing an operation performed by the control unit when the user registration key is pressed in the television according to the embodiment of the present invention. In FIG. 4, it is assumed that the user 102 registers the desired sound pressure in the TV 1 as a user. The user registration key pressing routine shown in FIG. 4 is a routine (preinstalled) related to the control program, and is called from the control program when the user registration key is pressed.

First, the control unit 13 recognizes the face of the user 102 (s1). More specifically, the control unit 13 causes the camera 101 to image the user 102. The control unit 13 extracts a human face area from the image data input from the camera 101. For face area extraction, for example, a hue value and a saturation value are obtained for each pixel of image data input from the camera 101, and a two-dimensional histogram of the hue value and saturation value of the entire image is created. Then, the two-dimensional histogram is clustered for each mountain. A region that is a candidate for a human face is extracted by matching the divided mountains for each group. Further, the area of the region extracted as the face candidate region is judged, the minute region is removed and renumbered, and the face candidate region is accurately extracted.
In this way, the control unit 13 extracts the face area of the person from the image data input from the camera 101, and acquires the face image of the user 102.

Next, the control unit 13 measures the distance (first distance) between the camera 101 and the user 102 (s2). An example of the measurement method of s2 will be described.
The control unit 13 calculates a distance from the area of the acquired face image based on a predetermined conversion table. The area of the face image is the maximum vertical width of the face × maximum horizontal width. This distance is a distance between the camera 101 and the user 102. For this reason, the camera 101 is preferably arranged directly above the TV 1 as shown in FIGS. The conversion table describes the correspondence between the area of the face image and the distance. For example, the conversion table may be stored in the ROM 13a.

  In this embodiment, the distance is measured by calculating the distance from the area of the face image, but the distance may be measured by other methods. Another method is a method in which a distance measurement sensor is used instead of the camera 101 and measurement is performed using electromagnetic waves or ultrasonic waves. Electromagnetic waves are a concept that includes light and radio waves. For example, the control unit 13 measures the distance by causing the distance measurement sensor to emit infrared rays or ultrasonic waves and measuring the time until the distance measurement sensor receives the infrared rays or ultrasonic waves reflected by the user 102. .

  Next, the control unit 13 measures the volume level of the amplified audio signal input to the speaker 8 (s3, FIG. 1). More specifically, the amplitude level of the audio signal is measured. The volume level is defined by an amplification (attenuation) amount (decibel amount) with respect to a predetermined volume. This volume level is an actual measurement value unlike the set volume level set in the TV 1. For this reason, the volume level varies depending on content such as commercials and television programs. In s3, an average value of the changing sound volume level for a predetermined time is measured. The predetermined time is, for example, 3 seconds. The number of samplings of the changing sound volume level is, for example, 10 per second, and 30 is obtained if the predetermined time is 3 seconds. The number of samplings of the changing volume level may be determined from the viewpoint of the specifications (capability) of the control unit 13.

In this embodiment, the average value of the sound volume level that fluctuates in s3 is measured for a predetermined time. However, the maximum value of the sound volume level that fluctuates for a predetermined time is acquired for a predetermined time, and the obtained maximum value is obtained. An average value may be measured. The fixed time is, for example, 1 second. The predetermined time is, for example, 3 seconds. That is, if the predetermined time is 1 second and the predetermined time is 3 seconds, an average value is measured from three samples.
Further, before measuring the volume level of the audio signal of s3, the control unit 13 may cause the OSD processing unit 4 to display an OSD display requesting that the audio be heard at a desired set volume level. The display requesting to listen to the sound at the desired set volume level is, for example, “Register the desired sound pressure from now on. Listen to the sound at the desired set volume level”. The user 102 who sees this display listens to the sound at the set volume level he / she likes. Thereby, the control part 13 has an effect that the sound pressure which the user 102 likes can be estimated more correctly.

Then, the control unit 13 estimates the sound pressure at the position of the user 102 as the estimated sound pressure based on the volume level of the audio signal and the measured distance (first distance) (s4). The unit of sound pressure is db (decibel). The sound wave output from the speaker 8 is attenuated in proportion to the distance. Therefore, the sound pressure obtained by the user 102 decreases in proportion to the distance. The estimation of s4 takes this attenuation into account, and is performed, for example, under the setting of no obstacle between the camera 101 and the user 102 and the average temperature and average humidity of the area where the TV 1 is used.
The set volume level is a value set on the television 1 side and does not decrease. Sound pressure is a concept different from the set volume level.

  Then, the control unit 13 records the estimated sound pressure estimated in s4 and the captured face image of the user 102 in the database 14a (s5). In addition, the user name may be input by the user using the operation unit 9 or the remote controller 11, and the user name, sound pressure, and face image may be associated and recorded.

FIG. 5 is a diagram showing the contents stored in the database 14a. The database 14a registers (stores) the user name, the face image of the user 102, and the estimated sound pressure in association with each other as shown in FIG.
As described above, the user 102 can register a desired sound pressure in the TV 1 as a user.

  FIG. 6 is a flowchart showing an operation performed by the control unit in the television according to the embodiment of the present invention. 6 mainly assumes a scene after the user 102 registers the desired sound pressure in the TV 1 in FIG.

  The sound volume optimization routine shown in FIG. 6 is a routine (preinstalled) related to the control program. The sound volume optimization routine is called from the control program with a predetermined timing as a trigger. The predetermined timing is, for example, a power-on, a predetermined time, or a predetermined time interval. The predetermined time is, for example, 13:00. The predetermined time is, for example, 30 seconds, 1 minute, 3 minutes, 5 minutes, 10 minutes, or 1 hour. The timer circuit 13c is referred to for the arrival of the predetermined time and the passage of the predetermined time.

Note that a setting key for setting a predetermined timing may be provided in the operation unit 9 to allow the user to determine the timing and frequency. The control unit 13 starts the operation of FIG. 6 at the timing and frequency set by the setting key.
As a result, the amplification amount is adjusted at the timing and frequency desired by the user.
Further, the control unit 13 may measure the volume level of the audio signal in real time, and start the operation of FIG. 6 when a significant change occurs in the volume level of the audio signal.

  First, the control unit 13 recognizes the face of the user 102 (s11). The recognition method is the same as s1.

  Next, the control unit 13 measures the distance (second distance) between the camera 101 and the user 102 (s12). The measurement method is the same as s2.

  The control unit 13 determines whether or not the face of the user 102 imaged in s11 is registered in the database 14a (s13, see FIG. 5). This determination is made by comparing the feature points of the face image of the user 102 captured in s11 with the feature points of the face image registered in the database 14a.

  If it is determined that the face of the user 102 imaged in s11 is not registered in the database 14a, the control unit 13 ends this process.

  On the other hand, when determining that the face of the user 102 imaged in s11 is registered in the database 14a, the control unit 13 acquires an estimated sound pressure corresponding to the user's face image in the database 14a (s14). Specifically, if the user is a tallow, 40 db is acquired, and if the user is a jiro, 60 db is acquired (see FIG. 5).

  Based on the second distance and the estimated sound pressure acquired in s14, the control unit 13 adjusts the set volume level so that the sound pressure at the user's position becomes the estimated sound pressure (s15), and this processing Exit. This adjustment is performed by measuring the volume level of the amplified audio signal input to the speaker 8 and estimating the sound pressure at the user's position from the measured volume level.

2 and 3, s15 will be described in detail below for the first situation and the second situation.
First, the first situation will be described.
As shown in FIG. 2, it is assumed that the estimated sound pressure is 40 db and the user 102 is watching a television program at a position of a distance Xcm. In this case, in s15, based on the second distance Xcm and the estimated sound pressure 40db, the control unit 13 causes the sound pressure at the position of the user 102 to be the estimated sound pressure 40db corresponding to the user's face image in the database 14a. Next, adjust the set volume level.

Next, the second situation will be described.
As shown in FIG. 3, it is assumed that the estimated sound pressure is 40 db and the user 102 is watching a television program at a distance of 2 × cm. In this case, in s15, based on the second distance 2Xcm and the estimated sound pressure 40db, the control unit 13 causes the sound pressure at the position of the user 102 to be the estimated sound pressure 40db corresponding to the user's face image in the database 14a. Next, adjust the set volume level.

  Naturally, the set volume level of the first situation and the second situation is higher than that of the first situation because the distance is longer.

In this way, since the user 102 captures the face of the user 102 and pre-registers the sound pressure desired by the user 102, the TV 1 automatically sets the set volume level so that the sound pressure can be obtained when the user 102 uses it next time. Adjust.
As described above, the user 102 can obtain the desired sound pressure without using the operation unit 9 or the remote controller 11 next time after the desired sound pressure registration.

  Hereinafter, a television receiver according to another embodiment of the present invention will be described.

  The television of this embodiment and the television of FIG. 1 are the same in configuration.

  FIG. 7 is a flowchart showing an operation performed by the control unit in a television which is another embodiment of the present invention. In this operation, s20 is added after s15 in FIG. 6, s21 is added between s12 and s13, and s22 to s24 are added after s21. The other processes (s11 to 15) are the same. FIG. 7 assumes a scene in which the sound pressure has changed significantly due to switching or commercials of a TV program while the same user is watching, and a scene in which a TV program or the like is viewed by changing the viewing position by the same user. .

  After adjusting the set volume level (s15), the control unit 13 sets the user who has adjusted the set volume level to the default (reference) (s20), and ends this process. This setting is used in the determination of s21 described later. More specifically, for example, the feature points of the user's face image with the set volume level adjusted are recorded in the RAM 13b. Alternatively, a flag may be set for the user who has adjusted the set sound volume level in the database 14a.

  Then, after measuring the second distance next time (s12), the control unit 13 determines whether or not a change has occurred in the face image of the user being imaged (s21). That is, in FIG. 7, it is assumed that the flow is repeated as s15 → s20 → s11 → s12 → s21, s23 → s24 → s11 → s12 → s21, or s23 → s11 → s12 → s21.

If the RAM 13b is used in s20, the determination in s21 is made by comparing the feature points of the user's face image recorded in the RAM 13b with the feature points of the user's face image captured in s11.
Also, in the determination of s21, if the flag is used in s20, the feature point of the face image of the user whose flag is set in the database 14a is compared with the feature point of the face image of the user 102 imaged in s11. Is done.

  If it is determined in s21 that the user's face image has changed, the control unit 13 proceeds to s13 and continues the process.

  If it is determined in s21 that the user's face image has not changed, the control unit 13 acquires an estimated sound pressure corresponding to the user's face image in the database 14a (s22).

  Then, the control unit 13 determines whether or not the current sound pressure at the user's position is the same value or approximate value as the estimated sound pressure acquired in s22 (s23). In the determination of s23, the volume level of the amplified audio signal input to the speaker 8 is measured, the current sound pressure at the user position is estimated from the measured volume level, and the current sound pressure at the estimated user position is estimated. And the estimated sound pressure acquired in s22. The approximate value may be determined from the viewpoint of whether or not the general user can recognize that the sound pressure has changed. This approximate value is, for example, a value within an absolute value of 5 db.

  If it is determined that the current sound pressure at the user's position is the estimated sound pressure acquired in s22, that is, if the sound pressure has not changed to such an extent that the user will recognize that the sound pressure has changed, control is performed. The unit 13 ends this process.

  If it is determined that the current sound pressure at the user's position is not the estimated sound pressure acquired in s22, that is, if the sound pressure has changed to the extent that the user recognizes that the sound pressure has changed, the control unit 13 adjusts the set volume level based on the second distance and the estimated sound pressure acquired in s22 so that the sound pressure at the user's position becomes the estimated sound pressure (s24), and ends the process. To do. s24 is the same process as s15.

  As a result, even when the sound pressure changes significantly due to switching of TV programs or commercials, the user 102 automatically adjusts the set volume level without adjusting the set volume level with the operation unit 9 or the remote controller 11 each time. There is an effect that is. Further, even when the user 102 changes the viewing position and views a television program or the like, the user 102 can automatically adjust the set volume level without adjusting the set volume level with the operation unit 9 or the remote controller 11 each time. There is an effect that is.

The block diagram which shows the main structures of the television which is embodiment of this invention. The conceptual diagram which showed a mode that the user views a television program in the position of distance Xcm in the television which is embodiment of this invention. The conceptual diagram which showed a mode that the user views a television program in the position of distance 2Xcm in the television which is embodiment of this invention. The flowchart which shows the operation | movement which a control part performs at the time of user registration pressing down in the television which is embodiment of this invention. The figure which shows the contents which are remembered in database 14a The flowchart which shows the operation | movement which a control part performs in the television which is embodiment of this invention. The flowchart which shows the operation | movement which a control part performs in the television which is other embodiment of this invention.

Explanation of symbols

1-TV
2-tuner 3-video / audio switching unit 4-OSD processing unit 4
5-Video signal output unit 6-Display unit 7-Audio signal output unit 8-Speaker 9-Operation unit 11-Remote control 12-Antenna 13-Control unit 13a-RAM
13b-ROM
13c-timer circuit 14-storage unit 14a-database 20-interface 101-camera 102-user

Claims (4)

Audio signal output means for amplifying and outputting the audio signal input from the input source;
In a television receiver comprising a speaker that outputs a sound signal output from the sound signal output means as a sound wave,
Operation means having a user registration key for performing user registration and a setting key for setting a predetermined timing;
Distance measurement imaging means for measuring a first distance from the apparatus main body to the user and imaging the user's face when the user registration key is operated;
When the user registration key is operated, the volume level of the amplified audio signal input to the speaker is measured, and the position of the user is determined based on the first distance measured by the distance measurement imaging unit. A sound pressure estimating means for estimating the sound pressure in as an estimated sound pressure;
A user registration table that registers the user's face image captured by the distance measurement imaging unit and the estimated sound pressure estimated by the sound pressure estimation unit in association with each other;
The distance measurement imaging means performs a second distance measurement from the apparatus main body to the user and an imaging of the user's face at the timing set by the setting key after the user registration is completed.
The sound pressure estimation means includes
After the user registration is completed, it is determined whether or not the face image of the user imaged by the distance measurement imaging unit is registered in the user registration table. Based on the second distance and the estimated sound pressure corresponding to the face image of the user in the user registration table, the audio signal output is set so that the sound pressure at the user position becomes the estimated sound pressure. Adjusting the amplification amount of the means,
Further, when the face image of the user being imaged by the distance measurement imaging unit after completion of the user registration is unchanged, the sound pressure at the user position corresponds to the face image of the user in the user registration table. When it is determined whether or not the estimated sound pressure is the same value or an approximate value, and it is determined that the estimated sound pressure is not the same value or the approximate value, the sound pressure at the user's position is the estimated sound pressure. The television receiver which adjusts again the said amplification amount of the said audio | voice signal output means. Audio signal output means for amplifying and outputting the audio signal input from the input source;
In a television receiver comprising a speaker that outputs a sound signal output from the sound signal output means as a sound wave,
An operation means having a user registration key for performing user registration;
Distance measurement imaging means for measuring a first distance from the apparatus main body to the user and imaging the user's face when the user registration key is operated;
When the user registration key is operated, the volume level of the amplified audio signal input to the speaker is measured, and the position of the user is determined based on the first distance measured by the distance measurement imaging unit. A sound pressure estimating means for estimating the sound pressure in as an estimated sound pressure;
A user registration table that registers the user's face image captured by the distance measurement imaging unit and the estimated sound pressure estimated by the sound pressure estimation unit in association with each other;
The distance measurement imaging unit performs measurement of a second distance from the apparatus main body to the user and imaging of the user's face after completion of the user registration,
The sound pressure estimation means determines whether or not a user's face image imaged by the distance measurement imaging means after the user registration is completed is registered in the user registration table. Based on the second distance measured by the distance measurement imaging means and the estimated sound pressure corresponding to the face image of the user in the user registration table, the sound pressure at the user position becomes the estimated sound pressure. Thus, a television receiver for adjusting the amplification amount of the audio signal output means. The sound pressure estimation means includes
If there is no change in the face image of the user imaged by the distance measurement imaging means after completion of the user registration, the estimated sound pressure at the user position corresponds to the face image of the user in the user registration table. It is determined whether or not the sound pressure is the same value or an approximate value. If it is determined that the sound pressure is not the same value or the approximate value, the sound pressure at the user's position becomes the estimated sound pressure. The television receiver according to claim 2, wherein the amplification amount of the audio signal output means is adjusted again. The operation means has a setting key for setting a predetermined timing,
The television receiver according to claim 2 or 3, wherein the distance measurement imaging unit performs the measurement of the second distance and the imaging of the user's face at a timing set by the setting key.

Images