JP2010028271A - Controller of electronic device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a control method of an electronic device which enables a user to accurately make control with few malfunctions and is excellent in operability when controlling the operation of the electronic device by applause sound or the like. <P>SOLUTION: A display control part displays either one of a channel-up image and a channel-down image in an active state, in a display part. A channel switching direction determination part determines channel-up when an operation signal is inputted while the channel-up image is displayed in the active state in the display part, and determines channel-down when operation signals are inputted while the channel-down image is displayed. A first tuner 400 and a second tuner 410 successively receive broadcast wave signals alternately according to the channel switching direction determined in the channel switching direction determination part. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an electronic device control device, and more particularly to an electronic device control device that remotely operates an electronic device to be operated without using a remote controller.

  Electronic devices such as television receivers, audio devices, and air conditioners that are currently used are generally operated remotely by touching operation buttons on the main body or using a remote controller (hereinafter referred to as a remote controller). In the former case, it is necessary to approach the main body of the electronic device to be operated, and the operation becomes very troublesome when the electronic device is far from the operator. This problem is solved by using a remote controller as in the latter case.

  However, once you pick up the remote control, you can then operate the electronic device without the need to move the operator, but if the remote control is not near the operator, you can't go looking for the location of the remote control. must not. This makes the operator feel bothered when he wants to operate something easily, for example, when he wants to turn on only the power for the time being. There can also be many situations where you want to use a remote control but cannot find the remote control.

  Patent Document 1 (Japanese Patent Laid-Open No. 03-54989) and Patent Document 2 (Japanese Patent Laid-Open No. 03-184497) describe a method of controlling an electronic device with applause sound instead of a remote controller.

Japanese Patent Laid-Open No. 03-54989 Japanese Patent Laid-Open No. 03-184497

  When an electronic device is controlled with a clapping sound or the like, it is preferable that a plurality of controls can be executed on the electronic device. For this purpose, it is conceivable to change the number of rhythms such as applause sound and the rhythm to correspond to each control. However, the user needs to learn the operation corresponding to each control, which makes it difficult to accurately perform the user's desired control. Furthermore, it is conceivable that the electronic device cannot accurately recognize the applause sound corresponding to each control, and malfunctions occur.

  Therefore, the present invention provides a method for controlling an electronic device with excellent operability and a control device for the electronic device, in which a user can accurately control the operation of the electronic device with few erroneous operations when controlling the operation of the electronic device with a clapping sound or the like The purpose is to provide.

In order to solve the above-described problems, the present invention provides the following electronic device display devices (a) and (b).
(A) a display unit (40), a first tuner (400) for receiving a broadcast wave signal, a second tuner (410) for receiving a broadcast wave signal, and a first or second tuner on the display unit And displaying either one of the channel-up image associated with the control for increasing the channel of the broadcast wave signal received by the user and the channel-down image associated with the control for decreasing the channel in an active state. A display control unit (401) for displaying an image to be displayed in an active state by rotating between a channel-up image and a channel-down image at a predetermined time interval, and a broadcast wave signal received by the first or second tuner An image that is active when an operation signal based on sound waves generated to switch channels is input A channel switching direction determining unit (401) that determines channel up for a channel up image and channel down for a channel down image, and an output signal from a first tuner and an output signal from a second tuner are selected. Each time the operation signal is input, the selector (49) that outputs the signal and the broadcast signal of the channel in the channel switching direction determined by the channel switching direction determination unit are alternately switched to the first tuner and the second tuner. And a reception control unit (401) that alternately outputs the output signals of the first tuner and the second tuner from the selector.
(B) The display control unit (401) superimposes and displays the channel up image and the channel down image on the video based on the broadcast wave signal received by the first tuner (400), and receives the control unit (401). The channel switching direction determination unit (401) determines the channel up / down direction of the broadcast wave signal received by the first tuner in the second tuner (410) before determining the channel switching direction. When the broadcast wave signal is alternately received and the channel switching direction determination unit determines the channel switching direction, the second tuner receives the broadcast wave signal of the channel in either the up direction or the down direction according to the determined channel switching direction. A control device for an electronic device as set forth in (a).

  When the operation of the electronic device is controlled by a clapping sound or the like, the user can execute the control accurately with excellent operability with few erroneous operations.

  Next, the best mode for carrying out the present invention will be described with reference to the drawings. The electronic apparatus of the present invention is controlled by a series of sound waves (for example, applause sounds) generated by an operator and provided with a predetermined time interval.

  FIG. 1 is a block diagram showing an electronic apparatus according to the first embodiment of the present invention. The electronic device of the first embodiment is, for example, a television receiver (television). In FIG. 1, an electronic device includes a microphone 101 that picks up the applause sound of an operator, an amplifier 102 that amplifies an analog audio signal from the microphone 101, and an audio signal (TV decoding) from a known audio detection circuit in the electronic device. A main body amplifier 202 that amplifies the sound), a main body speaker 201, and an amplifier 203 that amplifies an audio signal from the main body amplifier 202. Furthermore, a clap sound recognition unit 100 is provided to which an analog audio signal output from the amplifier 102 and a television decoded sound amplified by the amplifier 203 are input. The applause sound recognition unit 100 performs applause sound recognition as will be described later, and outputs a determination signal that is the determination result.

  The applause sound recognition unit 100 includes the A / D converters 103 and 204, the offset component removal units 104 and 205 that remove the offset components of the digital audio signals output from the A / D converters 103 and 204, and the offset components. Generated from the electronic device main body based on the absolute value signals supplied from the absolute value circuits 105 and 206, and the absolute value circuits 105 and 206 that output the audio signals (absolute value signals) obtained by converting the digital audio signals into absolute values. A main body sound removing unit 106 that generates a voice signal (applause sound component) from which the voice signal (main body sound) is removed. Further, the edge signal extractor 107 and the noise state detection unit 110 to which the audio signal output from the main body sound removal unit 106 is supplied, and an edge that generates an edge pulse based on the edge signal output from the edge signal extractor 107 A pulse generator 108, and a determination processing unit 109 that determines the number, timing, and the like of clap sounds based on an edge pulse, an output signal from the noise state detection unit 110, and a determination mode from the control unit 120 described later.

  Next, the operation of the electronic device of this embodiment will be described. The microphone 101 is provided at a predetermined position of the television, collects the applause sound of the operator, and performs an acoustic-electric conversion to output an analog audio signal. The analog audio signal is amplified by the amplifier 102 to an optimum amplitude level with respect to the dynamic range of A / D conversion by the A / D converter 103 at the subsequent stage, and then supplied to the A / D converter 103. The A / D converter 103 converts the input analog audio signal into a digital audio signal and supplies the digital audio signal to the offset component removal unit 104. The processing of the audio signal digitized by the A / D converter 103 is processed according to the contents of the subsequent functional blocks by software processing or hardware processing. However, the present invention is not limited to the processing method.

The analog signal before A / D conversion and the digital signal after A / D conversion are offset by the offset component 304 in accordance with the input dynamic range 303 of the A / D converter 103 shown in FIG. Has been. In the example shown in FIG. 2, the dynamic range 303 is 0V to 3.3V. However, in the subsequent processing, the offset component 304 is unnecessary because it is not a target of processing.
The actual waveform signal is composed of various frequency components and amplitudes as shown by the waveform signal 301, but the waveform signal shown in FIGS. 1 and 3 corresponds to the envelope 302 of the waveform signal 301 for simplicity of illustration. Shall. However, actual signal processing is performed not on the envelope 302 but on the actual waveform signal 301.
When the analog signal is converted into a digital signal by the A / D converter 103, the level 305 during silence is the center of the dynamic range 303 of the A / D converter 103 as shown in FIG. The voltage level is set by dividing resistance. The silent level 305 is an approximate average value of the amplitude of the waveform signal 301.

Returning to FIG. The offset component removing unit 104 generates a signal obtained by attenuating a low frequency component with a high-pass filter (HPF) from the digital audio signal, and removes the offset component.
The digital audio signal output from the offset component removing unit 104 is converted into an absolute value by the absolute value converting circuit 105. Waveform # 1 represents an absolute value signal output from the absolute value circuit 105. The absolute value signal of the waveform # 1 is a signal obtained by making the absolute value based on the average level of the analog audio signal obtained by collecting the sound by the microphone 101.

On the other hand, the audio signal (television decoded sound) of the TV broadcast signal decoded on the television is amplified by the main body amplifier 202 to a level suitable for output from the main body speaker 201, and is electro-acoustic converted by the main body speaker 201 and output. Is done.
The microphone 101 collects a sound wave obtained by superimposing a sound wave of a clap sound generated to control an electronic device on a sound wave based on an audio signal emitted from the main body speaker 201. Therefore, the absolute value signal of the waveform # 1 output from the absolute value converting circuit 105 is based on an audio signal in which the applause sound collected by the microphone 101 and the television decoded sound are mixed.

The audio signal amplified by the main body amplifier 202 is further amplified by the amplifier 203 and supplied to the A / D converter 204. The A / D converter 204 converts the input analog audio signal into a digital audio signal and supplies the digital audio signal to the offset component removal unit 205. The offset component removing unit 205 generates a signal obtained by attenuating the low frequency component of the digital audio signal with a high pass filter (HPF), and removes the offset component. The digital audio signal output from the offset component removal unit 205 is converted to an absolute value by the absolute value conversion circuit 206.
A waveform # 2 indicates an absolute value signal output from the absolute value conversion circuit 206. The absolute value signal of the waveform # 2 is a signal obtained by making the absolute value based on the average level of the analog audio signal output from the main amplifier 202.

The absolute value signal of waveform # 2 is close to the waveform of a signal that does not include a signal based on applause sound in the absolute value signal of waveform # 1.
The main body sound removing unit 106 subtracts the absolute value signal of the waveform # 2 from the absolute value signal of the waveform # 1, thereby acquiring the main body sound (TV decoding sound) collected by the microphone 101 included in the absolute value signal of the waveform # 1. ) Cancel the audio signal based on the component. The cancellation may be performed by generating a signal considering the propagation characteristics of the transmission path from the main body speaker 201 to the microphone 101 based on the absolute value signal of the waveform # 2, and subtracting the absolute value signal of the waveform # 1 from the generated signal. .

As described above, the main body sound included in the absolute value signal output from the absolute value circuit 105 is canceled by the main body sound removing unit 106. Therefore, the audio signal output from the main body sound removing unit 106 is an audio signal in which a sound other than the applause sound and the applause sound and a minute residual main body sound that cannot be canceled are mixed. A bursting sound such as a clapping sound is an impulsive sound, so it has a large energy and the frequency of the sound spans the entire band. Therefore, the edge component based on the applause sound is captured, and the applause sound can be distinguished from the sound other than the applause sound and the minute residual main body sound that cannot be canceled.
The edge signal extractor 107 extracts an edge component from the audio signal input from the main body sound removal unit 106 and outputs an edge signal having a waveform # 3. The edge signal extractor 107 extracts, for example, a signal component having a high frequency component equal to or higher than a predetermined frequency and a level equal to or higher than a predetermined first threshold as an edge signal.

  The edge pulse generator 108 generates an edge pulse of the waveform # 4 using the edge signal of the waveform # 3 as a trigger. For example, the edge pulse generator 108 generates an edge pulse (edge detection flag) Fp when the level of the edge signal of the waveform # 3 is equal to or higher than a predetermined second threshold value, and indicates that a clapping sound is detected. An edge pulse Fp is output to the determination processing unit 109 as a detection signal.

The noise state detection unit 110 evaluates the noise level in the environment where the operator is present based on the output signal of the main body sound removal unit 106, and generates a noise state flag if the environment is inappropriate for recognizing applause sound. And output to the determination processing unit 109.
The noise state detection unit 110 receives, for example, an absolute value signal from the main body sound removal unit 106, and sequentially compares the absolute value signal with a predetermined third threshold value. The noise state detection unit 110 cumulatively adds the absolute value signal value when the absolute value signal level is equal to or higher than the third threshold value, and cumulatively subtracts the absolute value signal value when the absolute value signal level is lower than the third threshold value. To obtain the cumulative calculation value. The noise state detection unit 110 determines that the current state is a noise state and generates a noise state flag having a predetermined value when the cumulative calculation value is equal to or greater than a fourth threshold value that is greater than the third threshold value.

The determination processing unit 109 obtains the edge pulse Fp from the edge pulse generator 108, evaluates it according to the determination algorithm, and outputs a determination signal when the determination condition is met. The determination condition is switched according to the input determination mode. When the determination processing unit 109 receives the noise state flag from the noise state detection unit 110, the determination processing unit 109 stops the recognition operation and prohibits the output of the determination signal. As a result, it is possible to prevent malfunctions caused by erroneously recognizing noise such as a loud TV sound or environmental sound as a clapping sound in a noise state.
The noise state detection unit 110 is preferably provided because it increases the resistance to malfunction, but it is not always necessary to provide the noise state detection unit 110.

FIG. 3 shows a block diagram of the determination processing unit 109 according to an embodiment of the present invention. 4 and 5 are timing charts for explaining the determination algorithm of the determination processing unit 109. FIG.
As illustrated in FIG. 3, the determination processing unit 109 includes a determination processing unit 111 and a counter 110. The determination processor 111 receives an edge pulse Fp, a noise state flag, and a determination mode. The counter 110 generates a count value and manages a time axis for generating a period between a plurality of edge pulses input to the determination processor 111, a gate pulse for gating a specific region, and the like.

The algorithm of the determination processor 111 of this embodiment is switched depending on the input determination mode. In this embodiment, before and after the user has generated a predetermined number of applause sounds, a quiet period in which no noise similar to the applause sound or applause sound has been generated is set, and a predetermined number of applause sounds have been generated. Two types of determination modes are set: an on-off mode in which a determination signal is output when a recognition signal is recognized, and a selection up / down mode in which a determination signal is output each time a single applause sound is recognized. In the present embodiment, the predetermined number of applause sounds is 3 or 4.
FIG. 4 shows an on / off mode in which applause is performed three times to control the electronic device, and FIG. 5 shows a selective up / down mode in which the electronic device is controlled by one applause.

The algorithm in the on-off mode shown in FIG. 4 determines the control of the electronic device that, regardless of the number of applause sounds, the applause sound is detected at a predetermined number of times at regular intervals, and no applause sound is detected for a certain period before and after that. Condition. That is, when the silence flag F _S shown in FIG. 4C, the flags F _{1 to} F ₃ shown in FIGS. 4D to 4F, and the silence flag F _N shown in FIG. 4G are all set. The determination processor 111 outputs a determination signal. Note that the configuration using all of the silence flag F _S , the flags F _{1 to} F _3, and the silence flag F _N described above is a most preferable configuration example of the present embodiment, and is not limited thereto.
As described above, FIG. 4 shows an algorithm when the predetermined number of applause sounds is three. The determination processing operation of the determination processor 111 will be described step by step with reference to the timing chart of FIG.

First, the determination processor 111 of the determination processing unit 109 determines whether or not the silence flag F _S shown in FIG. 4C is set. Silence flag F _S is not set, and the edge pulse F _P shown in FIG. 4 (A) from the state is "0", the counter 110 starts counting. The count value increases from the count start time (t = 0) as shown in FIG. 4I, and the determination processor 111 determines that the count value reaches a predetermined value t _S for a certain period t _S , FIG. ), It is determined whether or not the state in which the edge pulse _FP is not set (logic 0 state) continues.
If the state in which the edge pulse _FP is not set continues for a certain period of time t _S , the determination processor 111 regards it as silent and sets the silence flag F _S as shown in FIG. 4C (becomes logic 1). . As a result, the time t of the counter 110 is reset to “0”, and a series of determination operations starts.

If the edge pulse _FP is set before the fixed period t _S elapses and the silence flag F _S is not set, the counter 110 resets the time t to “0” and starts counting again. In order to prevent overflow, a limiter value is provided in the counter 110 as shown in FIG.

When the silence flag F _S is set, the time t of the counter 110 is incremented from “0”. At this time, in the silence flag F _S is "1", and, in a state of "0" of the flag F ₁ is the initial value of the first clapping sound which will be described later, the input of the edge pulse F _P based on the first clap It will be in a waiting state.
When the edge pulse F _P based on the first clapping sound is input as indicated by 501 in FIG. 4 (A), it is determined as an edge pulse F _P is "1", the determination processor 111 th one The applause sound flag F ₁ is set as shown in FIG. 4D (as logic “1”), and the applause is determined as the first applause. The counter 110 sets the time t to “0” again at the rising edge of the edge pulse F _P (501), and starts counting again as shown in FIG.

Thereafter, the edge pulse F based on the second applause sound in a state where the silence flag F _S and the flag F ₁ are “1” and the flag F _{2 of the second} applause sound described later is an initial value “0”. Waits for _P input. Determination processor 111, the edge pulse F _P based on the second clapping sound is inputted as shown by 502 in FIG. 4 (A), if it is determined that the edge pulse F _P is "1", the edge pulse F It is determined whether the rising time t of _P is t ≧ t ₁ and t <t ₁ + t ₂ .
In other words, the determination processor 111 has a second applause sound gate 504 (a time t ₂ of the edge pulse F _P (502) based on the second applause sound) having a time width t ₂ shown in FIG. It is determined whether it is within the gate flag F _G ), and if it is within the gate 504, the flag F _{2 of the second} applause sound is set (logic “1”) as shown in FIG. At the same time, the value (time) from the rise time of the edge pulse F _P (501) based on the first applause sound to the rise time t of the edge pulse F _P (502) based on the second applause sound is the first applause. stored sound and as an interval period t _iN of the second clapping sound, the counter 110 starts counting again to reset the time t to t = 0.

Next, in a state where the silence flag F _S and the flags F ₁ and F _{2 of} each applause sound are “1” and the flag F _{3 of the third} applause sound described later is an initial value “0”, When the edge pulse F _P based on the third clapping sound is input as indicated by 503 in FIG. 4 (a), the determination processor 111 determines that the edge pulse F _P is "1". Moreover rising point t of the edge pulse F _P based on the third clapping sound (503) is, t ≧ t _IN - (t _3/2), and, whether the t <t _IN + (t _3/2) judge.
That is, the determination processor 111 has a third time width t _{3 at} which the rising edge t of the edge pulse F _P (503) based on the third applause sound is smaller than the time width t ₂ shown in FIG. It is determined whether or not it is within the gate 505 (gate flag F _G ) for applause sound, and if it is within the gate 505, the flag F ₃ for the _third applause sound is set (logic “” as shown in FIG. 4F). 1 "). Further, after the third applause sound flag F ₃ is set, the counter 110 is reset again to t = 0 and starts counting. The gate 505 for the third clapping sound from the time the edge pulse F _P based on the second clapping sound (502) rises, the time obtained by subtracting the time t _3/2 from the interval period t _IN elapsed After that, set to stand up.

At this time, the silence flag F _S and the applause sound flags F ₁ , F ₂ and F ₃ are all logic “1”, and the fourth applause sound flag F ₄ (not shown) is the initial value “ The state is 0 ”. Time t In this state is incremented, if _{t ≧ t IN + (t 3} /2) to become to the edge pulse F _P is a state that is not set continues, as shown in FIG. 4 (G), the silent flag F _N Set (logic “1”).
The determination processor 111 sets the silence flag F _N and determines that the sound wave input to the microphone 101 is stopped.

Then, the silence flag F _S , the flags F _{1 to} F ₃ of each applause sound, and the silence flag F _N are all set, and the determination flag F _J (determination signal) is set only for a certain period t _F as shown in FIG. Is output. Here, a series of determination operations is completed assuming that the applause sound for control is correctly input. The determination processing unit 109 resets all the flags and the count value to “0” after the lapse of a certain period t _F , and the counter 110 starts counting again to prepare for the next determination operation.
The above is the determination operation of the determination processing unit 109 of the present embodiment.

As described above, in addition to detecting a predetermined number of applause sound flags, if the silence flag F _S and the silence flag F _N are used as determination conditions, if the user claps a predetermined number of times, the determination is performed for the predetermined number of times plus two times. Therefore, the determination operation of the determination processing unit 109 is preferable because it causes fewer malfunctions without imposing a burden of increasing the number of applause on the user. Furthermore, resistance to sounds generated in the surroundings is preferable because it is higher than in other determination conditions.

When the state in which the edge pulse F _P (502) based on the second applause sound is not input continues for the time (t ₁ + t ₂ ), the determination processing unit 109 determines that the input has failed and sets the silence flag F _S The interval period t _IN and the first applause sound flag F ₁ are reset.
Similarly, state not inputted edge pulse F _P based on the third clapping sound (503) is, if you continue _{t IN + (t 3/2} ) times, and silence flag F _S is determined that the input failure The interval period t _IN and the clap sound flags F ₁ and F ₂ are reset.
Further, after setting the flag F ₃ of the third clapping sound, for a period shorter _{t IN + (t 3/2} ) time, when the edge pulse F _P is inputted, from the number of predetermined clap Since there are many, it is determined that the input has failed.

According to the present embodiment, the interval from the time when the first edge pulse 501 corresponding to the first applause sound is generated to the time when the second edge pulse 502 corresponding to the second applause sound is generated. the period t _iN, are reflected in generating the gate 505 for the third clapping sound is detected whether or not generated. Thus, by reflecting in generating the gate for detecting the clap subsequent third time interval period t _IN, for the third adjacent clap sound after gate for clapping sound gate (Gate It is possible to adjust the intervals at which the flags F _G ) are generated to be equal intervals.
Further, in the present embodiment, by setting the time width t ₂ of the gate 504 for the second applause sound to be relatively long, it is possible to deal with various applause paces of the user.

  In the present embodiment, the case where the control is performed with three applause is shown, but the present invention is not limited to this. If the number of times of applause is increased, the determination condition becomes more severe, and the tolerance to malfunction increases. However, if the number is too large, the user feels bothersome and often fails, so 3 to 4 times is appropriate.

Although not shown in FIG. 4, even when the number of times of generating the applause sound is 4 times or more, the mth (n is an integer of 4 or more) for detecting the nth applause sound after the fourth time. One or a plurality of gates may be generated in the same manner as the third applause sound gate 505 described above. The m-th gate determines the interval between adjacent gates in the third applause sound gate 505 and the m-th gate for detecting whether or not the n-th applause sound has been generated, from the interval period t _IN to 3. Each is generated so as to be a time obtained by subtracting a time of 1/2 of the time width t ₃ of the gate for the applause sound 505 for the second time.
Alternatively, the first and the third clapping sound gate 505 based on the interval period t _IN of the second clap generated in the same manner as in the above, the fourth on the basis of the interval period t _IN of second and third clapping ' And the mth (m is an integer of 3 or more and 1 smaller than n) for detecting the nth (n is an integer of 4 or more) applause sounds after the fourth time. ) Gate may be generated based on an interval period from when the (n−2) th clap sound is generated until the (n−1) th clap sound is generated. In this way, it is possible to cope with a condition in which the interval gradually changes within the allowable range of the gate flag.
Although the above-described two methods can be used to generate the clap sound gate, it is difficult for the user to clap at completely equal intervals, and there is a tendency that the speed is gradually increased or decreased. Therefore, the latter method of changing the interval period is more preferable.

  Next, the selection up / down mode will be described. As will be described later, the selection up / down mode is used when the user performs an operation of operating the electronic device while viewing a menu image generated by graphics.

FIG. 5 is a timing chart for explaining the algorithm of the selective up / down mode. Unlike the on-off mode, in the selection up / down mode, the determination processing unit 109 completes the determination for each edge pulse generated based on one applause sound and corresponds to the determination signal (corresponding to the determination flag F _J in FIG. 4). ) Is output.
FIG. 5 (A) In the example edge pulse F _P from edge pulse generator 108 is obtained in a time series, if it is detected edge pulse based on four claps as indicated by 601 to 604 here Indicates. Therefore, as will be described later, the determination signal is output four times, and the control is performed four times.
FIG. 5B shows that the first applause sound rear gate 605 is generated in the determination processor 111 immediately after the first edge pulse 601 based on the first applause sound is generated. Similarly, immediately after the second edge pulse 602, the third edge pulse 603, and the fourth edge pulse 604 are generated, the second applause sound rear gate 606, the third applause sound rear gate 607, A fourth applause sound rear gate 608 is generated.

  The clap sound rear gates 605 to 608 are gates for confirming that no other edge pulse is generated immediately after the edge pulse based on the clap sound is generated. The period of the clap sound rear gates 605 to 608 is a period shorter than the period between applause when one user claps continuously. This is to avoid misrecognition. Therefore, the protection by the clap sound rear gate shown in FIG. 5B is not necessarily required, but it is preferable as a method for enhancing the resistance to erroneous recognition.

FIG. 5C outputs a determination signal when the determination processor 111 determines that an edge pulse has been detected, and the control unit 120 increments (increases) a specific value as a result of receiving the determination signal. Indicates processing. When the first edge pulse 601 falls, the first applause sound rear gate 605 shown in FIG. 5B is generated, and it is confirmed that no edge pulse is generated in the gate 605 ( First determination point) determination signal is output. Then, the electronic device is controlled to increment the specific value based on the determination signal.
Similarly, the determination signal is output from the determination processor 111 at the second determination point, the third determination point, and the fourth determination point, and the electronic device is controlled based on the determination signal.

  The selection up / down mode is less resistant to misrecognition because the algorithm from the applause detection to the output of the determination signal is simpler than the on-off mode described above. However, the determination processor 111 determines the edge pulse in the selected up / down mode during a specific period in which the menu image is displayed on the screen of the display unit, as will be described later. Therefore, the user can modify the control along the menu image, and the problem of tolerance is practically acceptable. In addition, the selection up / down mode is effective for generating a variety of applause sound recognition by combining with a menu image generated by graphics described later.

FIG. 6 shows an example of changes in the images 1 to 9 displayed on the display unit by the control unit 120 based on the determination of the edge pulse by the determination processing unit 109 according to each of the determination modes described above. The portion surrounded by the double line on the left side of FIG. 6 shows the case where the edge pulse determination mode is the on-off mode.
A portion surrounded by a double line on the right side of FIG. 6 shows a case where the determination mode is the selection up / down mode. Images 3 to 9 are associated with a plurality of controls for operating the electronic device, and show the contents of the control that is executed by the control unit 120 when the images are displayed. It is a menu image.

As shown in FIG. 6, in the on / off mode, the control unit 120 of the present embodiment turns on the electronic device (here, a television) when receiving a determination signal indicating that the clap sound has been detected three times at equal intervals. In FIG. 1, the power supply circuit is not shown. In addition, when receiving a determination signal indicating that the applause sound has been detected four times, the control unit 120 turns off the power supply. At this time, the control unit 120 functions as a power supply control unit. Further, when the control unit 120 receives a determination signal indicating that the applause sound has been detected three times while the power is on, the control unit 120 displays a menu image on the display unit. At this time, the control unit 120 functions as a display control unit.
When the electronic device is turned off, nothing is displayed on the display unit. This is image 1. In this state, when an edge pulse is generated by the edge pulse generator 108 based on three applause sounds, the determination processing unit 109 outputs a determination signal. The control unit 120 turns on the power of the television based on the determination signal, and causes the display unit to display the image 2a that is an image of the television broadcast or the package media (viewing state).
When the edge pulse is generated three times in the viewing state in which the image 2a is displayed, the control unit 120 turns on the menu image display for changing the volume or channel of the television, for example, based on this, and the volume of the image 3 -Display the channel selection menu image on the display. The image 3 (the same applies to the images 4 to 9) is displayed superimposed on the image 2a being viewed.
In addition, the control unit 120 of the present embodiment displays the menu image of the image 3 and switches the determination mode to the selection up / down mode.

When the image 3 is displayed, the user can select whether to control the volume or the channel by performing applause once. The selection method will be described later. Here, a case will be described in which it is determined that the control unit 120 has selected to control the volume, and the image 7 is displayed on the display unit.
The image 7 is a volume up / down selection menu, and the user can select one of the controls to increase or decrease by one applause. Here, the control unit 120 determines that up is selected, and displays the image 8 on the display unit.
In a state where the image 8 is displayed on the display unit, the number of edge pulses based on the clapping sound detected by the determination processing unit 109 is equal to the amount by which the control unit 120 increases the volume. The user may clap until the desired volume is reached. As shown in FIG. 5C, the control unit 120 increments a value corresponding to the number of applause sounds with respect to the initial value X (initial volume) to increase the volume.

When the control unit 120 determines that the channel control is selected while displaying the image 3 on the display unit, the control unit 120 displays the image 4 on the display unit. Image 4 is a channel up / down selection menu similar to image 7 (in the case of volume). Again, the user can select either control to up or down the channel.
After the control unit 120 executes the control to up or down in a state where any one of the channel up image 5, the channel down image 6, the volume up image 8 and the volume down image 9 is displayed on the display unit It is determined whether or not a predetermined time has elapsed. When the predetermined time has elapsed, the control unit 120 stops displaying the menu images (images 3 to 9) on the display unit. Therefore, the display unit is in a viewing state in which only the image 2b is displayed. Note that the image 2b is an image in which time has elapsed from the image 2a, and both are images on which no menu image is superimposed.

  Alternatively, when the determination processing unit 109 detects the edge pulse based on the applause sound four times, the control unit 120 may stop displaying the menu image on the display unit based on the detection. When the control unit 120 receives a determination signal indicating that the edge pulse has been detected four times in the viewing state in which the image 2b is displayed on the display unit, the control unit 120 turns off the television.

  The above is the control method of power on / off, channel up / down, and volume up / down in the control unit 120 of the present embodiment. The control contents listed here are main and frequently used in the operation of the television, and in this embodiment, these controls can be performed without using an existing remote controller.

Next, image transition based on the applause sound shown in FIG. 6 will be described in detail with reference to FIGS.
FIG. 7 shows a case where the applause sound is detected three times and the menu image 3 is displayed (menu on) in the viewing state where the image 2 (2a, 2b) is displayed on the display unit 40. When viewing the image 2 shown in FIG. 7A, when the user claps three times, an edge pulse is generated based on the clap sound, indicating that the determination processor 111 has detected the edge pulse. A determination signal is output. Based on the determination signal, the control unit 120 displays the volume / channel selection menu image of the image 3 shown in FIG. At the same time, the control unit 120 switches the appraisal recognition determination mode of the determination processing unit 109 from the on-off mode to the selection up / down mode. The determination processor 111 generates a determination signal each time an edge pulse based on a clapping sound is detected once, and the control unit 120 performs corresponding control on the electronic device based on the determination signal.

The menu image of the image 3 shown in FIG. 7B is generated by a graphics generator described later. Here, the menu image displayed on the display unit 40 is an image presenting a plurality of controls that the user can perform on the electronic device. In the present embodiment, a volume button image 31 indicating volume control, And a channel button image 32 showing control of the channel. Therefore, here, the menu image indicates that the user can select volume control or channel control (menu selection image).
However, the user cannot select desired control using applause as a trigger simply by displaying a plurality of images showing contents corresponding to the plurality of controls. Therefore, the control unit 120 of this embodiment circulates a state in which one of a plurality of controls is activated (active state) at a predetermined time interval between the plurality of controls. Here, the active state means that when the determination processing unit 109 detects an edge pulse based on the applause sound once, the control unit 120 executes the corresponding control. Further, the control unit 120 shows that the volume control shown in FIG. 8A is in an active state (3A) and the channel control shown in FIG. 8B is in an active state. The image (3B) is displayed on the display unit 40 alternately in a time division manner.

  In the present embodiment, among a plurality of images each describing a plurality of control contents for an electronic device, an image corresponding to the active control is surrounded by a jagged circle around the button indicating the control contents. An image (an image in an active state) is displayed (the same applies to other figures). An image 3A in FIG. 8A includes an image 31a in which volume control is active and a channel button image 32. In other words, the image 3A includes an active volume button image 31a and an inactive channel button image 32. An image 3B in FIG. 8B includes a volume button image 31 and an image 32a in which channel control is active, that is, an inactive volume button image 31 and an active channel button image 32a. including.

As a method of indicating to the user which control is active among a plurality of controls, for example, an image surrounded by a circle around a button corresponding to the control in the active state may be used. At least one of brightness, color, shape, and size may be different from that of an inactive image. For example, the active state is displayed on the display unit 40 as a bright image and the inactive state is a gray image. Further, in the present embodiment, a case will be described in which an image in an active state indicating control in which one of the two images displayed on the display unit 40 is in an active state. Only the image may be displayed.
The control unit 120 activates one of a plurality of controls for controlling the electronic device, and cycles the active state at a predetermined time interval between the plurality of controls. Further, in conjunction with this tour, the control unit 120 displays any one of the plurality of images respectively associated with the plurality of controls on the display unit 40 in an active state and displays in an active state. The image to be displayed is displayed by cycling between a plurality of images. The control unit 120 also functions as a display control unit that controls the display unit 40.

In the present embodiment, the control unit 120 circulates a state where one of the options is activated at a specific cycle, for example, every second. The control unit 120 circulates an image to be displayed in an active state every other second and displays the image on the display unit 40 in accordance with the circulation in the activated state. Referring to FIG. 8, since the volume button image 31a in the active state and the image 32a in the active channel button are cycled every second, the images 3A and 3B are displayed every second. The As described above, in the present embodiment, the control unit 120 switches the image to be displayed on the display unit 40 in conjunction with the change of the activated state, so that the user can activate the desired control content while viewing the display unit 40. If the applause is performed once at a certain timing, the desired control can be selected.
In addition, although this embodiment demonstrates the case where the control part 120 circulates an active state between two control (option), it circulates an active state between three or more control using this embodiment. It is also possible. When the active state is circulated between three or more controls, the three or more images corresponding to each control may be displayed on the display unit 40 in the active state in order.

In FIG. 8, when the volume button image 31a in the active state is displayed on the display unit 40, that is, when the volume control is activated, the edge pulse generator 108 generates an edge pulse once. Indicates. The control unit 120 that has received the determination signal from the determination processing unit 109 determines that volume control has been selected, and enters a state of controlling the volume. When the volume control is selected, the image displayed on the display unit 40 is the image 3A shown in FIG. 9A (this is the same as the image 3A in FIG. 8A) to FIG. 9B. Transition to image 7.
An image 7 shown in FIG. 9B is a menu image including an up button image 71 (71a) indicating control for increasing the sound volume and a down button image 72 indicating control for decreasing the sound volume. Here, the user can select control to increase or decrease volume.

  FIG. 10A is the same diagram as FIG. 9B, and shows an image 7A indicating that the volume up control is in an active state. The image 7A includes an up button image 71a in an active state and a down button image 72 in an inactive state. FIG. 10B shows an image 7B indicating that the volume down control is in an active state. The image 7B includes an up button image 71 in an inactive state and an down button image 72a in an active state. As described above, the control unit 120 cycles through the state where the up or down is activated every second. Accordingly, the image 7A and the image 7B are alternately displayed on the display unit 40 every second.

In FIG. 10, when an up button image 71a (image 7A) in an active state is displayed on the display unit 40, a clapping sound is generated once, and an edge pulse based on the clapping sound is generated by the edge pulse generator 108. The state generated once is shown. The control unit 120 receives a determination signal indicating that an edge pulse has been generated from the determination processing unit 109 in a state where the control for increasing the volume is activated. When the control unit 120 receives the determination signal, the control unit 120 determines that the control to be increased is selected, and temporarily stops the circulation in the activated state. In other words, the control unit 120 receives the determination signal in the state where the control to be up is active, and therefore stops (fixes) the circulation of the active state between the up or down control while the up control is active.
Here, to fix the active state is to keep the active state that has been circulated between a plurality of options so far as one option. As the active state is fixed, the control unit 120 also stops patrol of images displayed in an active state between a plurality of images.

Subsequently, the control unit 120 causes the display unit 40 to display the image 8 illustrated in FIG. The image 8 includes an up button image 71 (71a), a down button image 72 (72b), and an image 80 for indicating a volume level.
As described above, the control unit 120 determines that “up” has been selected and is in a state of executing control to increase the volume. Further, since the activation state is fixed to the up control, an image indicating that the up control is in an active state is displayed on the display unit 40, and the circulation of the image displayed in the active state is stopped. In the image 8, an up button image 71a in an active state and a down button image 72b in an inactive state are displayed. The image 72b is displayed with a lower luminance than the image 72 of the down button in the inactive state shown in FIG.
In order to more clearly indicate that the active state is fixed, only the image in the active state may be displayed on the display unit 40.

The image 80 for indicating the volume level is displayed as a bar in which a plurality of rectangles are arranged. The number of rectangles indicates the variable range of the volume level. In the present embodiment, the initial value of the volume level is set to 5, and therefore, 5 out of the plurality of rectangles are shown in black.
When the control unit 120 displays the image 8 on the display unit 40 and receives a determination signal output every time the determination processing unit 109 detects the edge pulse once, the control unit 120 electronically increases the volume level by one. Control the equipment. When the edge pulse is detected n times, the volume level is changed from 5 to 5 + n. As the volume level increases, the image 80 is changed to an image in which black rectangles are increased.
Although not shown in FIG. 11, when the control unit 120 determines that the control to be turned down is selected in FIG. 10B, the volume level is similarly set from the initial value according to the number of times that the clap sound is detected. Lower. In addition, even when a channel is selected in FIG. 8, the control to increase or decrease can be performed by the same method as the control to increase or decrease the volume described above.
As described above, the control unit 120 controls the operation of the electronic device corresponding to the image in the active state displayed on the display unit 40 when the edge pulse is generated, for example, the volume up / down control or the channel up / down control. I do. Therefore, the control unit 120 functions as an operation control unit.

Next, a method for controlling an electronic device according to an embodiment of the present invention will be described with reference to a flowchart shown in FIG. The control unit 120 controls the electronic device according to the flowchart.
In the control unit 120 in the initial state, the flag Fmd indicating the mode in which the determination processing unit 109 determines applause is “0” indicating the on / off mode, the flag Fof indicating the power state is “0” indicating the power off state, and the menu image The flag Fmn indicating the presence / absence of display is “0” indicating the off state. Note that the power-off state is a state in which no device other than the device for detecting the applause sound of the present invention is turned on.

In this state, first in step S1, a power-on recognition determination is made. In step S1, the electronic device (television receiver) is turned off. When a determination signal indicating that an applause sound is generated three times to turn on the power and an edge pulse based on the generated applause sound is received from the determination processing unit 109, the flag Fof becomes “1”, and in step S2 Proceed to power on state.
When the clap sound is not detected three times, the power off state is continued.

In step S2, the electronic device is turned on, and the television program (image 2a) is displayed on the display unit 40 as shown in FIG. Subsequently, a power-off recognition determination is made in step S3, and a menu-on recognition determination is made in step S5.
When a determination signal indicating that an applause sound has been generated four times in the viewing state and an edge pulse based on it is received from the determination processing unit 109, the flag Fof becomes “0” in step S3, and the electronic signal is detected in step S4. Turn off the device. Therefore, the screen of the display unit 40 is in a power-off state shown in image 1 of FIG. When the edge pulse based on the applause sound is not detected a predetermined number of times in step S3, it waits in the viewing state.

On the other hand, when a determination signal indicating that an edge pulse based on three applause sounds is detected in the viewing state is received from the determination processing unit 109, the menu-on recognition determination flag Fmn indicating the display state of the menu image is determined in step S5. “1”. When the applause sound is not detected three times in step S5, it waits in the viewing state.
The control unit 120 displays the menu image on the display unit 40 when the menu-on recognition determination flag Fmn is 1, and does not display the menu image on the display unit 40 when the flag Fmn is 0 (the image display is turned off). When the flag Fmn is changed from 1 to 0, the display of the menu image on the display unit 40 is stopped.
Subsequently, in step S6, the determination mode setting flag Fmd is set to 1, and the determination mode of the determination processing unit 109 is set to the selection up / down mode.

In steps S1 to S5, the flag Fmn is 0, and no menu image is displayed on the display unit 40 of the electronic device. In addition, the flag Fmd is also 0, and the determination of the edge pulse by the determination processing unit 109 is performed in the on-off mode.
In step S16 and step S21 to step S32 described later from step S6, the flag Fmn and the flag Fmd are both 1, a menu image is displayed on the display unit 40, and the determination processing unit 109 detects an edge pulse once. It is in a selective up / down mode where a decision signal is output every time.

In the subsequent step S7, the value of the first activation flag Fg1 indicating that the corresponding control is in an active state is cycled between “0” and “1” at predetermined time intervals. When the first activation flag Fg1 is 0, the channel control is in an active state, and when the first activation flag Fg1 is 1, the volume control is in an active state. With the circulation of the activation flag Fg1, as shown in FIGS. 8A and 8B, the image displayed in the active state displayed on the display unit 40 is circulated between the plurality of images at a predetermined time interval. When the first activation flag Fg1 is 0, an active channel button image 32a is displayed on the display unit 40, and when the first activation flag Fg1 is 1, an active volume button image 31a is displayed on the display unit 40. .
Subsequently, a selection identification determination is made in step S8. The control unit 120 determines whether the edge pulse is generated when the first activation flag Fg1 is 0 or 1. That is, it is determined whether the applause sound is generated at the timing when the image 32a of the active channel button or the image 31a of the active volume button is displayed on the display unit 40. Note that the circulation (alternating) of the value of the activation flag Fg1 is performed at predetermined time intervals as described above, and is continued (looped) until an edge pulse is generated.

  If the applause sound is detected once when the first activation flag Fg1 is 0, the control unit 120 sets the selection flag Fs1 to 0 indicating channel control selection, and proceeds to step S21. In step S21, a channel selection image shown in image 4 of FIG. The control unit 120 cycles the value of the second activation flag Fg2 between “0” and “1”. When the second activation flag Fg2 is 1, since the up control is in an active state, an image of the up button in the active state is displayed on the display unit 40. Since the down control is in an active state when the second activation flag Fg2 is 0, an image of the down button in the active state is displayed on the display unit 40.

If the edge pulse is generated once when the first activation flag Fg1 is 1 in step S8, the selection flag Fs1 becomes 1 indicating volume control selection, and the process proceeds to step S9. In step S9, the volume adjustment selection image shown in the image 7 of FIG. The control unit 120 circulates the value of the second activation flag Fg2 between “0” and “1”, and the volume up control shown in FIG. 10A is in an active state (Fg2 = 1). And an image 7B showing that the sound volume down control shown in FIG. 10B is in an active state (Fg2 = 0) are displayed on the display unit 40 by rotating at predetermined time intervals. ing.
Subsequently, in step S10, it is determined whether the edge pulse is generated once when the second activation flag Fg2 is 0 or 1.

In step S10, when it is determined that the edge pulse is generated once when the second activation flag Fg2 is 1 (up), the up / down flag Fs2 is set to 1, and the process proceeds to step S11. In step S <b> 11, an image 8 indicating that the active state has been fixed in the volume up control shown in FIG. 11 is displayed on the display unit 40. In subsequent step S12, it is determined whether or not a determination signal indicating that an edge pulse has been generated is input from the determination processing unit 109. When the determination signal is input, the volume is increased by one step in step S13.
On the other hand, if it is determined in step S10 that the edge pulse has been generated once when the second activation flag Fg2 is 0 (down), the up / down flag Fs2 becomes 0 and the process proceeds to step S14. In step S <b> 14, an image indicating that the active state is fixed for the volume down control is displayed on the display unit 40. In subsequent step S15, it is determined whether or not a determination signal is input. In step S16, the volume is decreased by one step each time the determination signal is input.
If it is determined in step S12 or S15 that the determination signal is not input, the process proceeds to step S21 described later.

When the control for adjusting the sound volume is completed in step S13 or S16, time measurement by the first counter 1 is started in step S21. The count value C1 of the first counter 1 is reset every time an edge pulse is generated once (every time the volume is changed by one step). In a succeeding step S22, it is determined whether or not the condition of C1> th1 is satisfied with respect to the threshold value th1 in which the count value C1 of the first counter 1 is set. This is to determine that an edge pulse is not generated at a predetermined set time. The threshold th1 corresponds to a first arrow in FIG.
When the condition is satisfied, the control unit 120 returns to step S9 and cycles through the state in which one of the up control and the down control is active. Further, the display unit 40 again displays the images 7A and 7B indicating that the control for increasing or decreasing the volume shown in FIG. 10 is in an active state. By returning to step S9, since the volume up / down control can be selected and adjusted again, the volume can be corrected.
On the other hand, when it is determined in step S22 that the condition of C1> th1 is not satisfied, the process waits until the condition is satisfied.

Further, when the volume up and down are alternately active in step S9, the time is measured by the second counter 2 in step S17. The counter value C2 of the second counter 2 is reset when an edge pulse is generated (up / down selection). In subsequent step S18, it is determined whether or not a condition of C2> th2 is satisfied with respect to the threshold value th2 in which the count value C2 of the second counter 2 is set. This is to determine that an edge pulse is not generated at a predetermined set time. The threshold th2 corresponds to a second arrow in FIG. 13 to be described later, and is a value corresponding to a time longer than a time during which an image displayed in an active state is circulated between all images. If the condition is satisfied, the process proceeds to step S19.
On the other hand, in step S18, when the condition of C2> th2 is not satisfied, the process waits until the condition is satisfied.

In step S19, the determination mode setting flag Fmd is set to 0, and the determination mode of the determination processing unit 109 is set to the on / off mode. In the subsequent step S20, the menu on recognition determination flag Fmn is set to 0 to turn off (clear) the menu image display. Then, the viewing state of steps S3 and S5 is entered again.
Note that the same processing as the above-described volume up / down is performed for channel up / down (steps S23 to S32).

FIG. 13 is a timing chart for explaining the control method of the present invention. An example in which the state of the electronic device and the menu image transitions with the applause of the user is shown in time series. In FIG. 13, the horizontal direction is the time axis, FIG. 13E is the determination mode below the arrow of the time axis, FIG. 13C is the user's applause represented by black circles, and FIG. Indicates the content (recognition result) of a determination signal indicating that an edge pulse based on applause (C) has been detected.
As described above, when receiving the determination signal indicating that the edge pulse has been generated three times when the determination mode is the on-off mode, the control unit 120 turns on the power and determines that the edge pulse has been generated four times. When the signal is received, the power is turned off. Further, when a determination signal indicating that the edge pulse has been generated three times is received when the power is on, the menu image is turned on.
Further, the control unit 120 receives the determination signal and performs control each time the determination processing unit 109 detects the edge pulse once in the selection up / down mode. At this time, the control unit 120 is in a state where the control operation corresponding to the menu image displayed on the display unit 40 is valid. Time numbers t11 to t19 for explanation are given to the nodes of the time axis in FIG.

As schematically shown in FIG. 13B, in the power-off state, first, applause sound by the user is generated three times as shown in (C). At time t11 when receiving the determination signal indicating that the edge pulse has been generated three times, the control unit 120 turns on the electronic device as shown in (B) (on), and displays the broadcast program on the display unit 40. A viewing state in which an image such as is displayed is set (steps S1 and S2 in FIG. 12).
Next, a case where control for lowering the volume is performed will be described. First, a user applause sound is generated three times. The control unit 120 displays the menu image 3 on the display unit 40 at time t12 based on the edge pulse corresponding to the applause sound (steps S5 and S6 in FIG. 12). From the time point t12 when the menu image 3 is displayed, the determination mode is automatically switched from the on-off mode to the selected up / down mode as shown in FIG.

When the mode is switched to the selected up / down mode, first, the value of the first activation flag Fg1 circulates between 0 and 1 as shown in FIG. That is, in the present embodiment, the active state transitions between volume control and channel control. At this time, as shown in FIGS. 8A and 8B, the display unit 40 alternately displays an image 3A including an active volume button image 31a and an image 3B including an active channel button image 32a. Display cyclically.
In FIG. 13A, a solid line is drawn in the direction indicating the control in the active state (the activation flag Fg1 is set), and the control content in the active state is surrounded by a jagged circle. Here, since the user's purpose is to reduce the volume, applause is generated once as shown in FIG. 13C at time t13 within the time when the volume control is active. The control unit 120 selects volume control based on the edge pulse corresponding to the applause sound (step S8 in FIG. 12).

When the volume control is selected, an image 7A including the active up button image 71a and an image 7B including the active down button image 72a shown in FIG. (Step S9 in FIG. 12). When a clap sound is generated once as shown in FIG. 13C at time t14 within the time in which the down control is in an active state, the control unit 120 determines that the control for reducing the volume is selected. Further, as shown in FIG. 13A, the active state is fixed to the down control. (Steps S10 and S13 in FIG. 12).
While viewing the image indicating that the active state is fixed to the down control, the user generates applause sounds the same number of times as the volume level to be lowered. Here, as shown in FIG. 13C, since the clap sound was generated twice at times t15 and t16, the control unit 120 controls the electronic device to reduce the volume level by “−2” from the initial value. Control is performed (step S14 in FIG. 12).

When the volume level has been lowered to a desired level, the user can leave the electronic device in that state without doing anything. The control unit 120 according to the present embodiment generates a predetermined set time (indicated by the first arrow in FIG. 13C) after the last edge pulse is generated based on the clap sound last generated at time t16. It is confirmed that an edge pulse is not generated until the time (equivalent to the threshold th1) elapses, and at time t17 when the set time elapses, switching of the active state between the up control and the down control is resumed (step S15 in FIG. 12). , S16). In addition, the control unit 120 causes the display unit 40 to rotate and display the active image again. In this way, the volume can be corrected.
Even when the edge pulse for the predetermined set time indicated by the first arrow is not generated after the active state is fixed in the down control at time t14, the control unit 120 causes the active state to change and the image to cycle. To resume display.
Further, when a time during which an edge pulse is not generated continues from time t17 until a predetermined set time (corresponding to the threshold th2) indicated by the second arrow in FIG. As shown in (A), the display of the menu image on the display unit 40 is stopped (OFF) (steps S17 to S20 in FIG. 12).
At time t18 when the menu image display is turned off, the determination mode is switched to the on-off mode as shown in FIG. When the determination signal indicating that the applause sound has been generated four times is received at time t19, the power is turned off as shown in FIG. 13B (off) (step S3 in FIG. 12, S4).

In FIG. 13, the menu image display is stopped at time t <b> 18, but it is possible to resume the circulation of the active state between the volume control and the channel control. At this time, the display unit 40 alternately displays images in which the volume control or channel control shown in FIG. 8 is active.
With the sequence of the present embodiment shown above, various controls such as power on / off, channel up / down, and volume up / down can be performed by a binary control method called applause.

Next, each embodiment of the control apparatus of the electronic device of the present invention will be described. FIG. 14 is a block diagram of an electronic device provided with a control device for the electronic device according to the first embodiment of the present invention. In FIG. 14, the same components as those in FIG.
In FIG. 14, the television receiver 408 and the user 409 viewing the television receiver 408 are surrounded by double lines. The television receiver 408 is an electronic device controlled by remote applause sound (remotely operated). The microphone 101, the amplifier 102, the applause sound recognition unit 100, the amplifier 203, and system control provided in the television receiver 408 are controlled. A device 401, a graphics generator 402, and a display device 405 are control devices for the electronic device of the first embodiment.

  The television receiver 408 receives an RF signal obtained by modulating a television signal with a high-frequency carrier signal. The tuner 403 selects an RF signal from a broadcast station of a desired channel from the input RF signal, decodes the demodulated and band-compressed signal, and outputs a video signal and an audio signal. The audio signal is amplified by the main body amplifier 202 and supplied to the main body speaker 201, thereby being subjected to electro-acoustic conversion and radiated into the air as a sound wave. Further, the output analog audio signal of the main body amplifier 202 is amplified by the amplifier 203 and supplied to the A / D converter 204 in the applause sound recognition unit 100 shown in FIG.

On the other hand, the sound wave of the viewing environment collected by the microphone 101 is acoustic-electrically converted to an analog audio signal, amplified to an appropriate amplitude by the amplifier 102, and within the applause sound recognition unit 100 shown in FIG. To the A / D converter 103. The applause sound recognition unit 100 recognizes the applause sound according to the determination mode input from the system controller 401. The determination modes are the above-described on-off mode and selection up / down mode.
The applause sound recognition unit 100 recognizes the applause sound according to the algorithm described above according to the determination mode, and outputs the recognition result to the system controller 401 as a determination signal.

The determination signal indicates whether the edge pulse is detected three times (ON control) or the edge pulse is detected four times (OFF control) when the determination mode is the on-off mode, and is input to the system controller 401. Is done. If the determination signal indicates that the edge pulse has been detected three times, the system controller 401 outputs a control signal indicating that the power is turned on or the menu image is ON, and if the determination signal indicates that the edge pulse has been detected four times. A control signal indicating power off is output.
In the selection up / down mode, since the applause sound recognition unit 100 performs recognition for each applause, the determination processing unit 109 outputs a determination signal every time an edge pulse is detected.

  The system controller 401 controls the entire system of the television receiver 408. The system controller 401 includes, for example, a central processing unit (CPU). The system controller 401 includes power on / off, menu image on / off, appropriate menu image display, and volume control. It controls state transitions of all television receivers 408, such as setting and up / down, channel setting and up / down, and the like. The system controller 401 outputs an appropriate determination mode according to the state of the television receiver 408, receives the determination signal from the applause sound recognition unit 100, and outputs an appropriate control signal to control the television receiver 408. The control unit 120 is a part of the components of the system controller 401.

The control of the electronic device using the applause sound of the present invention is as described with reference to FIGS. 12 and 13, and the system controller 401 controls the state transition of the electronic device and detects the applause sound emitted by the user. The applause sound recognition unit 100 is.
When the system controller 401 receives a determination signal indicating that the applause sound has been detected three times in the viewing state, the system controller 401 outputs a control signal to the graphics generator 402 so as to output a menu image.

The graphics generator 402 outputs the images 3 to 9 shown in FIG. 6 to the video mixer 404. Images 3 to 9 are displayed in a state in which any one of a plurality of images associated with a plurality of controls for operating the electronic device is active, and which control of the electronic device is active to the user It shows whether it is in a proper state. The graphics generator 402 is controlled by the system controller 401 so as to generate a plurality of images, and circulate and output an image to be displayed in an active state between the plurality of images at a predetermined time interval. The system controller 401 controls the timing at which the graphics generator 402 switches and outputs a plurality of images together with the timing at which the active state circulates between the plurality of controls (options). Therefore, the system controller 401 functions as a display control unit.
The output signal of the graphics generator 402 is mixed by the video signal mixer 404 with the video signal of the desired broadcast station output from the tuner 403. The mixed video signal is displayed on the display device 405. Accordingly, the display device 405 displays an image in which the menu image generated by the graphics generator 402 is multiplexed (superposed) on the television image.

The system controller 401 determines that the control in the active state is selected at the timing when the determination signal is input from the applause sound recognition unit 100, and executes the control in the active state. In addition, the system controller 401 controls the graphics generator 402 to display a menu image according to the selected control content on the display device 405. Furthermore, when the display device 405 displays an image indicating that the up / down control is active, the system controller 401 controls the volume or channel up / down according to the number of determination signals.
Only the menu image output from the graphics generator 402 may be displayed on the display device 405, but the menu image is superimposed on the television image so that the television image is displayed in the background and the menu image can also be recognized. It is more preferable. Various methods of multiplexing by the video mixer 404 are conceivable, but since they are not the gist of the present invention, detailed description thereof will be omitted.

In the electronic device of the first embodiment shown in FIG. 14, the user 409 can perform an appropriate operation for controlling the electronic device according to the content displayed on the display device 405.
The user 409 can confirm from the state that the display device 405 is turned off, that is, nothing is displayed on the display device 405, that the electronic apparatus is powered off. The user 409 can confirm that the power has been turned on after three claps, since an image is displayed on the display device 405. Even if the power is turned on as an exceptional case, if an image such as a television broadcast or a video is not projected on the display device 405, the power is turned on by a pilot lamp (not shown) provided in the television receiver 408. It may be possible for the user 409 to confirm that this is the case.
Next, when it is desired to change the channel or volume while the power is on, the menu image is displayed on the display device 405 when the applause is performed three times. As described above, the user 409 can applaud the display image and perform desired control on the electronic device.

  The electronic device according to the first embodiment illustrated in FIG. 14 is configured such that a user 409 can select control of a desired electronic device while viewing the display device 405. The user 409 visually recognizes the menu image for selecting the desired control generated by the graphics generator 402, and performs various controls by applauding at appropriate timing and selecting the control content. Can do.

FIG. 15 is a block diagram of an electronic apparatus provided with a control apparatus for an electronic apparatus according to the second embodiment of the present invention. In FIG. 15, the same components as those in FIG.
In FIG. 15, a television receiver 408 ′ is an electronic device controlled by applause sound. The microphone 101, amplifier 102, applause sound recognition unit 100, main body speaker 201, main body provided in the television receiver 408 ′. The amplifier 202, the amplifier 203, the system controller 401, the sound generator 406, and the sound mixer 407 are electronic device control devices according to the second embodiment.
Unlike the first embodiment in which a plurality of options for controlling an electronic device are presented to the user 409 using a plurality of images, the present embodiment uses a plurality of sounds whose tone color and pitch are changed. 409.

The sound generator 406 generates a plurality of audio signals corresponding to a plurality of controls for operating the electronic device. The system controller 401 controls the sound generator 406 so that a sound signal to be output from the speaker 201 is circulated between the plurality of sound signals at a predetermined time interval. The system controller 401 is an audio signal control unit. Here, the plurality of sound signals are generated so that a person can distinguish each of them by hearing, such as a difference in pitch or tone color. The audio signal output from the sound generator 406 is mixed with an analog audio signal of a desired broadcast station obtained from the tuner 403 by an audio mixer 407.
The mixed audio signal is amplified by the main body amplifier 202 and output as a sound wave from the main body speaker 201, while being amplified to a required level by the amplifier 203 and then supplied to the applause sound recognition unit 100.

The user 409 perceives different sounds for each option output from the main body speaker 201, recognizes the pitch and timbre, and applauds at the timing when the sound representing the desired option is generated, and performs a plurality of controls. Can be realized. When selecting the desired control based on the sound, or performing up or down control, for example, indicates that the sound and channel control is active, indicating that the volume control is active The user 409 needs to know in advance what kind of sound the sound is.
For this reason, it is preferable that the electronic device control based on sound is used in combination with an image. The user 409 can understand which sound is associated with which option by an image. The electronic device according to the present embodiment is preferable because when the user 409 gets used to the control method, the electronic device can be controlled without looking at the screen of the display device 405.

FIG. 16 is a timing chart showing a second embodiment in which the determination processing unit 109 detects an edge pulse in the selective up / down mode.
In the embodiment described above, the determination processing unit 109 outputs a determination signal by confirming recognition every time an edge pulse is detected as shown in FIG. 5 in the selection up / down mode. Therefore, even when a sound similar to the applause sound is generated regardless of the user's intention, when the edge pulse is generated in the edge pulse generator 108, the determination processing unit 109 generates the applause sound. Recognize as well. This is because the control of the electronic device based on one applause sound (selective up / down mode) is limited when the menu image is displayed, and the control can be modified according to the menu image. This is because the detection method of applause sound that prioritizes ease of use is adopted in this embodiment.

However, since the use of an electronic device in an environment where a clapping sound detection method with high resistance against erroneous detection is required is considered, it is necessary to prepare a detection method with higher resistance. Therefore, in the selection up / down mode of the second embodiment shown in FIG. 16, when the determination processing unit 109 detects the edge pulse twice, the control unit finalizes the control.
In the selective up / down mode of the second embodiment, a determination signal is output when two edge pulses are detected by the determination processing unit 109. When receiving the determination signal, the control unit increments the initial value X to X + 1 as shown in FIG.

A feature of a method for controlling an electronic device based on two applause sounds will be described with reference to FIG. Edge pulses 701 to 704 shown in FIG. 16A are edge pulses obtained from the edge pulse generator 108 shown in FIG. 1 and indicating that a clapping sound has been detected. The applause sound rear gates 705 to 708 shown in FIG. 16B are applause prohibition regions set behind the edge pulse, as in the first embodiment in which control is determined based on one applause sound. As described above, it usually has a shorter period than between applause when one user continues to applaud. The applause sound rear gate is generated immediately after the edge pulse based on the applause sound falls.
When a clap sound is generated in the clap sound rear gates 705 to 708, the applause sound in that case is invalidated as an unexpected detection sound emitted from a person other than the person who operates the user (user).

When the edge pulse 701 based on the first applause sound is generated as shown in FIG. 16A, the determination processing unit 109 generates the applause sound rear gate 705 shown in FIG. If no sound is detected by the applause sound rear gate 705, a clap sound gate 709 for detecting the second applause sound shown in FIG. 16C is further generated. The clap sound gate 709 is set at a predetermined timing by the counter 110 in the determination processing unit 109 shown in FIG. If the edge pulse 702 based on the second applause sound is in the range where the second applause sound gate 709 is raised (active), the second applause is validated.
The period when the gate 709 for the second applause sound rises (acceptable range of applause) is as shown by the arrow and the broken line in FIG. 16C, but when the edge pulse 702 based on the second applause sound rises. Thus, the clap sound gate 709 falls as indicated by the solid line. Subsequently, the determination processing unit 109 raises the applause sound rear gate 706 of the second edge pulse 702.

In the second embodiment, whether or not the edge pulse is detected by the determination processor 111 (applause sound recognition) is not detected in the first applause sound rear gate 705 based on the second applause sound, An edge pulse 702 is detected in the second applause sound gate 709, and it is determined that an edge pulse based on the applause sound is not detected in the second applause sound rear gate 706. When the above conditions are satisfied, the determination processor 111 determines that the edge pulse has been detected twice and outputs a determination signal.
Based on the determination signal, the control unit 120 increments the control target initial value X to X + 1 at the end of the second applause sound rear gate 706 shown in FIG. 16B, as shown in FIG. 16D. . This increment time is the first definite point.

Similarly, the judgment processor 111 does not detect the edge pulse based on the fourth applause sound in the third applause sound rear gate 707 after the input of the edge pulse 703 based on the third applause sound, and the fourth applause. The edge pulse 704 based on the fourth applause sound is detected in the sound gate 710, and it is determined that the edge pulse based on the applause sound is not detected in the fourth applause sound rear gate 708, and the edge pulse is detected twice. A determination signal indicating that (detection of the fourth applause sound) is output.
As shown in FIG. 16D, the control unit 120 outputs a control signal for incrementing X + 1 to X + 2 at the end of the fourth applause sound rear gate 708 shown in FIG. 16B. This incrementing time is the second definite point. Similarly, a determination signal is output as a set of two applause sounds that are continuous within a predetermined period range, and control by the applause sound is performed.

  The selection up / down mode of the second embodiment has been described above, and the determination processing unit 109 outputs the determination signal by detecting the edge pulse twice. The advantage of the second embodiment is that the second applause sound gate (709, 710) is set and that the edge pulse is generated twice, and the applause sound rear gate period is set twice. By checking, it is to improve the tolerance to erroneous detection and recognition of applause sound.

  The selection up / down mode enables quick determination and control based on one or more applause sounds generated by the user based on the menu image generated by the graphics generator 402.

When the electronic device receives a digital broadcast, it takes about 2 seconds to output the video of the switched channel and display it on the display unit. For this reason, if the interval between applause sounds is less than 2 seconds, the timing at which the image of the switched channel is displayed does not match the applause sound timing, which may hinder channel up / down control.
A control method for accurately controlling an electronic device even when the interval between generated clap sounds is shorter than the time required to output the image of the channel switched by the electronic device will be described with reference to FIG. 17 and subsequent drawings. To do.

FIG. 17 shows a block diagram of the tuner. The first tuner 400 includes a first receiver 41, a first demodulator 42, a first processor 43, and a first video / audio demodulator 44, and the second tuner 410 receives a second reception. 45, a second demodulator 46, a second processor 47, and a second video / audio demodulator 48. The first tuner 400 and the second tuner 410 perform output processing to output a broadcast wave signal of a desired channel as a video signal and an audio signal among the received broadcast wave signals (RF signals).
The first receiver 41 receives the RF signal RFS, selects the RF signal RFS from the broadcast station of the desired channel, and outputs it to the first demodulator 42. The first demodulator 42 demodulates the received RF signal RFS and outputs a TS signal to the first processor 43. The first processor 43 extracts video data and audio data from the multiplexed packet based on the TS signal, and outputs the extracted video data and audio data to the first video / audio demodulator 44. The first video / audio demodulator 44 decodes the video data and the audio data and outputs the video signal and the audio signal to the selector 49. The first processor 43 may perform descrambling processing.
The second receiver 45 is the first receiver 41, the second demodulator 46 is the first demodulator 42, the second processor 47 is the first processor 43, Since the video / audio demodulator 48 is the same as the first video / audio demodulator 44, a detailed description thereof will be omitted.

The first receiver 41 to the second video / audio demodulator 48 constituting the first tuner 400 and the second tuner described above are based on a switching control signal input from the system controller 401 shown in FIGS. Be controlled.
The first switching control signal CS1 is supplied to the first receiver 41 to the first video / audio demodulator 44 included in the first tuner 400, and the second switching control signal CS2 is included in the second tuner 410. Are supplied to the second receiver 45 to the second video / audio demodulator 48. The first switching control signal CS1 and the second switching control signal CS2 are signals for switching channels of broadcast wave signals received by the first and second tuners. The system controller 401 is a channel switching direction determination unit that determines the direction of switching the channel of the broadcast wave signal received by the first tuner 400 and the second tuner 410.

The selector 49 selects a valid signal from the signals output from the first video / audio demodulator 44 and the second video / audio demodulator 48 and outputs a video signal and an audio signal. The selection is based on the control signal SS input from the system controller 401. The system controller 401 is a reception control unit that selects and outputs the output signals of the first tuner 400 and the second tuner 410 from the selector 49.
The position where the selector 49 is provided is not limited to the illustrated position. For example, it may be between the receivers 41 and 45 and the demodulators 42 and 46. However, each of the first receiver 41 to the second video / audio demodulator 48 causes a delay along with the channel switching, and the delay amount becomes the largest in the first video / audio demodulator 44 and the second video / audio demodulator. An audio demodulator 48 is provided. Therefore, when the selector 49 is provided after the first video / audio demodulator 44 and the second video / audio demodulator 48, the effect of shortening the time taken from the channel switching operation by the user to the channel switching is the greatest. This is preferable.

FIG. 18 is a timing chart illustrating a method for controlling an electronic device according to an embodiment of the present invention. An example in which the state of the electronic device and the menu image transitions with the applause of the user is shown in time series. FIG. 18 shows a method for controlling an electronic device when the channel up / down selection menu (image 4) in the selection up / down mode shown in FIG.
In FIG. 18, the horizontal direction is the time axis, and FIG. 18A shows the channels of the video signal and the audio signal output from the selector 49. FIG. 18B shows the control signal SS input to the selector 49, and FIG. 18C shows the output of the first tuner 400. 18D shows the first switching control signal CS1, and FIG. 18E shows the output of the second tuner 410. 18 (F) shows the second switching control signal CS2, FIG. 18 (G) shows the display state of the menu image, and FIG. 18 (H) shows the times t0 to t12 and the time when the user claps with black circles. Show.

As shown in FIG. 18A, the selector 49 outputs a video signal and an audio signal of one channel. As shown in FIG. 18E, the selector 49 outputs a signal from the second tuner 410. The first tuner 400 up and down the channel based on the first switching control signal CS1 shown in FIG. The first switching control signal CS1 is switched at times t1, t2, and t3, the signal from time t0 to t1 is to switch the channel in the down direction, the signal from time t1 to t2 is to switch the channel in the up direction, and the time t2 to t3 is the channel Is a signal for switching the down in the down direction. A signal for determining the channel switching direction is input from the system controller 401. The time from time t0 to t1, time t1 to t2, and time t2 to t3 is shorter than the time for the first tuner 400 to complete the output processing of the video signal and the audio signal.
Therefore, the first tuner 400 is controlled to change the channel switching direction before the output process is completed, and the output process of the channel in the new switching direction is started again. In FIG. 18G, the channel up image 41a in which the channel up control shown in FIG. 20 is active and the channel down image 42a in which the down control is active shown in FIG. 20 are alternately displayed on the display unit 40. It shows that. The system controller 401 causes the display unit 40 to display the channel up image 41 and the channel down image 42 on the video based on the broadcast wave signal received by the second tuner 410.

At time t4 when the channel up button image 41a in the active state shown in FIG. 20A is displayed on the display unit 40, a clap sound is generated once as shown in FIG. 18H. The system controller 401 determines that the control for increasing the channel has been selected, and causes the display unit 40 to display the image 5 shown in FIG. The image 5 includes an up button image 41 (41a), a down button image 42 (42b), and an image 50 for indicating a volume level. The system controller 401 determines that up is selected, and is in a state of executing control for raising the channel. Further, since the activation state is fixed to the up control, an image indicating that the up control is in an active state is displayed on the display unit 40, and the circulation of the image displayed in the active state is stopped. In image 5, an up button image 41a in an active state and a down button image 42b in an inactive state are displayed.
The image 50 for indicating the channel of the currently received broadcast wave signal is displayed as a bar in which a plurality of rectangles are arranged. FIG. 21 shows that channel 5 is currently selected and received. The number of rectangles indicates a switchable channel, and can be switched from 1 to 14 channels in this embodiment.
When the system controller 401 receives the determination signal that is output every time the determination processing unit 109 detects the edge pulse once while displaying the image 5 on the display unit 40, the system controller 401 electronically increases the channel by one. Control the equipment. Each time the channel is switched, the image 50 is switched to an image in which the position of the black rectangle is changed.

The first tuner 400 receives the first switching control signal CS1 for switching the channel in the up direction from the system controller 401 at time t3, and starts output processing. The first tuner 400 further receives a signal indicating that channel up has been selected from the system controller 401 at time t4, and continues the output process. Here, the first tuner 400 executes a process of outputting a 2-channel video signal and an audio signal to the selector 49. The process is completed at time t5. When a clap sound is generated once at time t6, the system controller 401 changes the output of the selector 49 to the output of the first tuner 400 as shown in FIG.
In the present embodiment, an operation signal based on a clap sound indicating that control for increasing the channel at time t4 has been selected is input, and an operation signal based on a clap sound indicating switching the channel up at time t6 is a system. Each of the outputs from the controller 401 may be output from the system controller 401 at time t4, indicating that the control for increasing the channel has been selected and that the channel is to be switched up.
The second tuner 410 receives the second switching control signal CS <b> 2 from the system controller 401 at time t <b> 6, and performs processing so that the 3-channel video signal and audio signal can be output to the selector 49. The process is completed at time t8.

As shown in FIG. 18H, a clap sound for controlling channel up is generated again at time t7. At time t7, the output processing of the second tuner has not been completed yet. Accordingly, as shown by hatching in FIG. 18A, the video signal and the audio signal are not output from the selector 49 from time t7 to time t8. When the output processing of the second reception processing system is completed at time t8, the 3-channel video signal and audio signal are output from the selector 49.
This is because the interval between the applause sound and the applause sound is shorter than the time required to output the video of the channel to be switched as described above. The system controller 401 controls the selector 49 to output the video signal and the audio signal from the second tuner 410 based on the applause sound at the time t7, but the processing of the second tuner 410 is completed at the time t7. Not done. Therefore, a video signal and an audio signal are not supplied to the selector 49, and a period (time t7 to t8) in which nothing is displayed on the display unit 40 occurs.

  However, by providing the first tuner 400 and the second tuner 410, the electronic device can perform control to switch channels more smoothly than in the case where there is only one tuner. The period from time t7 to t8 can be extremely shortened, and even if the interval between applause sounds is less than 2 seconds, it is possible to cope with channel switching control based on applause sounds.

FIG. 18A shows that neither a video signal nor an audio signal is output from time t9 to time t10. This is because, as described above, the applause sound for controlling the channel up is generated at time t9 earlier than the processing of the first tuner 400 is completed. Therefore, although the system controller 401 controls the selector 49 to output the signal of the first tuner 400, the selector 49 cannot receive the signal from the first tuner 400 at time t9.
At time t10, the processing of the first tuner 400 is completed, and the video signal and audio signal of 4 channels are output from the selector 49. The processing of the second tuner 410 that started from time t9 is completed at time t11. When a clap sound is generated at time t12, the video signal and audio signal of 5 channels that have already been processed by the second tuner 410 are output from the selector 49 without delay.
As shown in FIG. 18, when the channel switching direction is determined to be up at time t4, the system controller 401 alternately transmits the broadcast wave signal of the channel in the up direction to the first tuner 400 and the second tuner 410. To receive sequentially. Further, the system controller 401 causes the selector 49 to alternately output the output signals from the first tuner 400 and the second tuner 410. Even when the channel switching direction is determined to be down, the system controller 401 operates in the same manner as described above.
The first tuner 400, the second tuner 410, and the selector 49 may be provided in the television receivers 408 and 408 ′ instead of the tuner 403 shown in FIGS.

  As described above, an embodiment of the present invention that can be used not only for a method of using applause sound as a trigger for power supply and menu on / off, but also for an operation of selecting a volume, a channel, etc., and an operation of incrementing / decrementing a value is provided. Thus, the electronic device can be operated remotely and various controls can be performed.

  In the present invention, any one of a plurality of images corresponding to a plurality of control of an electronic device is displayed in an active state, and a series of sound waves generated to control the electronic device is detected. When an edge pulse is input, the electronic device is controlled to respond to the active image displayed when the edge pulse is input, so control corresponding to one of the multiple images Can be performed by an electronic device. Therefore, the present invention is not limited to simply turning the electronic device on and off with the sound waves generated by the user, even when the remote control is not at hand or the user cannot hold the remote control. Convenient to do.

  In the present invention, since the control unit 120 stops the circulation of the plurality of images and the edge pulse is not generated for a predetermined time (th1), the operation of displaying the plurality of images is performed again. It is also possible to execute control different from the control that has been performed up to.

Further, in the above embodiment, the flow of the operation of the control unit 120 until one of the two options is selected and the selected control is performed has been described. However, the selection is made from a plurality of three or more controls. Similarly, the active state can be circulated among a plurality of controls, and it can be determined that the selection is made based on the applause sound.
Furthermore, although the applause sound is generated, it may be a hand hitting sound by hitting a body part or an object with a hand, and if the sound wave generated by hitting an object with the object is an intermittent intermittent sound wave, the above sound detection and Recognition processing is possible.

  Further, the present invention is not limited to the above embodiment, and includes, for example, a control program for an electronic device that causes a computer to execute the applause sound recognition process described with reference to FIGS. 1 to 4 and the flowchart illustrated in FIG. To do. The electronic device control program may be recorded on a recording medium and loaded into a computer, or may be distributed via a communication network and loaded into a computer, or may be incorporated into an electronic device. Good.

It is a block diagram which shows the electronic device of 1st embodiment of this invention. It is the figure which showed the relationship of the signal before the state of the input waveform of A / D converter 103, and A / D conversion. It is a block diagram which shows one Embodiment of the determination process part 109 of this invention. It is a timing chart for demonstrating the determination processing algorithm of on-off mode of one Embodiment of this invention. It is a timing chart for demonstrating the determination algorithm of the selection up / down mode which is 1st embodiment of this invention. It is the figure which showed an example of the transition of the image displayed on a display part. It is a figure which shows the operation | movement by which a menu image is displayed on the display part. It is a figure explaining the circulation of a display with the image 3A and the image 3B. It is a figure explaining the time of changing to 3 from image 3A. It is a figure explaining the display circulation of the image 7A and the image 7B. It is a figure explaining the state at the time of the display image being fixed. It is a flowchart of the control method of the electronic device which is one Embodiment of this invention. It is a timing chart for explaining state transition of control operation of electronic equipment in one embodiment of the present invention over time. It is a figure which shows the structure of a television receiver provided with the control apparatus of the electronic device which is 1st embodiment of this invention. It is a figure which shows the structure of a television receiver provided with the control apparatus of the electronic device which is 2nd embodiment of this invention. It is a timing chart for demonstrating the determination algorithm of the selection up / down mode which is 2nd embodiment of this invention. It is a block diagram of the tuner which is one Embodiment of this invention. It is a timing chart for demonstrating the control method of the electronic device in one Embodiment of this invention. It is a figure which shows the image 3A and the image 4. FIG. It is a figure which shows the image 4A and the image 4B. It is a figure which shows the image 5. FIG.

Explanation of symbols

100 applause sound recognition unit 101 microphone (sound collector)
102, 203 Amplifier 103, 204 A / D converter 104, 205 Offset component removal unit 105, 206 Absolute value circuit 106 Main body sound removal unit 107 Edge signal extractor 108 Edge pulse generator 109 Judgment processing unit 110 Noise state detection unit 110 Counter 111 Determination processor 120 Control unit 201 Main unit speaker 40 Display unit 400 First tuner 401 System controller (display control unit, channel switching direction determination unit, reception control unit)
402 Graphics Generator 403 Tuner 404 Video Mixer 405 Display Device (Display Unit)
406 Sound generator 407 Audio mixer 408 Television receiver 409 User 410 Second tuner

Claims (2)

A display unit;
A first tuner for receiving a broadcast wave signal;
A second tuner for receiving a broadcast wave signal;
Either the channel up image associated with the control for increasing the channel of the broadcast wave signal received by the first or second tuner on the display unit and the channel down image associated with the control for down the channel. A display control unit for displaying one image in an active state, and displaying an image to be displayed in an active state by cycling between the channel-up image and the channel-down image at a predetermined time interval;
The channel-up image may be an image that is active when an operation signal based on a sound wave generated to switch a channel of a broadcast wave signal received by the first or second tuner is input. A channel switching direction determining unit that determines channel up and channel down if the channel down image,
A selector for selecting and outputting the output signal of the first tuner and the output signal of the second tuner;
Each time the operation signal is input, the first tuner and the second tuner alternately receive the broadcast wave signal of the channel in the channel switching direction determined by the channel switching direction determination unit, and perform the selection. A reception control unit for alternately outputting the output signals of the first tuner and the second tuner from a device;
A control apparatus for an electronic device comprising: The display control unit superimposes and displays the channel up image and the channel down image on a video based on a broadcast wave signal received by the first tuner,
The reception control unit includes: a channel in an up direction and a down direction of a broadcast wave signal received by the first tuner at the second tuner before the channel switching direction determination unit determines the channel switching direction. When the channel switching direction determination unit determines the channel switching direction, the second tuner transmits the broadcasting wave signal of the channel in either the up direction or the down direction according to the determined channel switching direction. The control apparatus for an electronic device according to claim 1, wherein:

Images