JPH08336167A - Stereoscopic picture device - Google Patents

Abstract

PURPOSE: To prevent malfunction of another remote control equipment by making the infrared light modulation frequency for the control of stereoscopic vision glass devices different from the infared light modulation frequency for the control of another remote control equipment and lowering also an infrared light level. CONSTITUTION: The modulation frequency of infrared light for remote control devices of a TV, a VTR and an airconditioner, etc., to be used at one's home is 33 to 40kHz. The modulation frequency of the infrared light of the remote control device for operation control of a stereoscopic picture device main body is set to 38kHz and this signal light is received by a remote control reception circuit 2 and is controlled. For the control of the shutter of a stereoscopic vision glass device, a pair of the synchronizing pulse and the pulse for the left eye and a pair of the synchronizing pulse and the pulse for the right eye which are modulated at 58kHz, for instance, are alternately transmitted at 120kHz by a shutter switch signal transmission circuit 4. Thus, because the modulation frequency is changed and an infrared light output level is made about half the level of the main body control, there is few possibility that the remote control devices of the other equipments to be used at one's home are affected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stereoscopic image device. More specifically, the present invention relates to a stereoscopic image device that controls an eyeglass device necessary for stereoscopic viewing.

[0002]

2. Description of the Related Art An example of a stereoscopic image device using an eyeglass device is shown in Japanese Patent Laid-Open No. 2-92187. This is because the left and right image information for recognizing a stereoscopic image is alternately displayed on the stereoscopic image device at a predetermined cycle. In the eyeglass device used by the user, the shutters corresponding to the left and right eyes are displayed on the stereoscopic image device. The left and right eyes of the user are configured to recognize only corresponding video information by alternately controlling the opening and closing in synchronism with the above (see FIG. 8). The synchronization of the left and right video information displayed on the stereoscopic video device and the opening / closing control of the shutter of the eyeglass device is performed by the stereoscopic video device from a switching signal synchronized with the video information displayed on the screen, for example, infrared light. It is realized by utilizing and transmitting to the eyeglass device side. With this configuration, the user wearing the eyeglass device can realize stereoscopic vision of the image on the stereoscopic image device.

By the way, the influence of the infrared light for controlling this spectacle device on the remote control operation (remote control operation) of other equipment and the influence on the remote control operation of the stereoscopic image device itself using this spectacle device, that is, The remote controller may malfunction.

[0004]

That is, in order to control the eyeglass device for the user to obtain stereoscopic vision from the stereoscopic image device, the stereoscopic image device always displays infrared light in the stereoscopic image display mode. Is being output. Therefore, the remote control operation for controlling the operation of the stereoscopic image device itself (channel selection operation and volume operation) becomes strange, and other devices,
For example, the operation of the remote controller that controls the operation of the air conditioner or the like may be abnormal.

The present invention is to solve this problem, and prevents infrared light for controlling the eyeglass device of the stereoscopic image device from adversely affecting the remote control operation using other infrared light. It provides a possible configuration.

[0006]

According to the present invention, the frequency of a modulated signal of infrared light used in a remote control device for controlling the operation of the stereoscopic image device itself, and the eyeglass device control of the stereoscopic image device are controlled. The frequencies of the modulated signals of infrared light are set to different frequencies. Further, the level of infrared light for controlling the eyeglass device is set to be smaller than the level of infrared light used for the remote control device.

Further, in the present invention, two kinds of frequencies of the signal modulated by infrared light for controlling the eyeglass device are further used. Then, the infrared light for controlling the eyeglass device is modulated by one of these two types of signals.

[0008]

Therefore, according to the present invention, the frequency of the infrared light modulating signal for the eyeglass device is set to a frequency different from the infrared light signal frequency of the remote control device for controlling the operation of the stereoscopic imaging device. Therefore, it is possible to prevent an adverse effect on the remote control operation of the stereoscopic image device itself. Further, it is possible to prevent adverse effects on the remote controller of equipment other than the stereoscopic video device. Further, since the output level of the infrared light for controlling the eyeglass device is set to be smaller than the output level of the infrared light of the remote control device that controls the operation of the stereoscopic image device itself, the remote control operation of the stereoscopic image device itself and the It is possible to prevent adverse effects on the remote control of other devices.

According to another aspect of the present invention, the frequency of the signal that modulates the infrared light for the eyeglass device is the frequency of the signal that modulates the infrared light of the remote control device that controls the operation of the stereoscopic image device. By setting a different frequency and modulating infrared light with a signal of a different frequency, it is possible to prevent adverse effects on the remote control operation of the stereoscopic image device itself and other devices.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of a stereoscopic image device according to the present invention.

In FIG. 1, the stereoscopic image device includes a tuner 1 for converting an input signal into an intermediate frequency signal, and an image intermediate frequency amplifier circuit 4 for extracting and amplifying a normal image signal from the intermediate frequency signal from the tuner 1. , A video detection circuit 5 for detecting the normal video signal, a video amplifier circuit 6 for extracting a sync signal from the normal video signal, amplifying and demodulating the video signal from which the sync signal is extracted, and a sawtooth wave based on the sync signal. It has a deflection circuit 7 for producing a current and flowing it to a deflection coil (not shown), and a CRT 8 for receiving the output of the demodulation output from the image amplification circuit 6 and displaying the image.

The stereoscopic image device further includes an audio intermediate frequency amplifier circuit 9 for amplifying an audio signal and an audio intermediate frequency amplifier circuit 9.
FM detection circuit 10 for detecting the audio signal amplified by
And a speaker 12 for reproducing the audio signal output from the audio amplifier circuit 11, and an audio amplifier circuit 11 for amplifying and demodulating the detected audio signal.

The stereoscopic image device is composed of a microcomputer, and receives a remote control receiving circuit 2 for demodulating an infrared signal from a remote control (not shown) and a synchronizing signal as an input, and outputs the demodulated output from the remote control receiving circuit 2. A channel selection signal, a volume control signal, and a first video switching signal (hereinafter abbreviated as a first switching signal A) for switching between stereoscopic video display and normal video display based on the channel selection signal, a second video switching signal (hereinafter, referred to as a second video switching signal). 2 switching signal B), and a tuning circuit 3 that outputs various command signals such as a shutter switching signal for switching the liquid crystal shutters of the eyeglasses. The tuning circuit 3 is connected to the power supply 15. The power cutoff detection circuit 3a detects whether the power supply 15 is cut off or turned on.

The power supply 15 includes a main power supply controlled by a button provided on the television main body and an auxiliary power supply controlled by a remote controller.

Also, the stereoscopic video device takes out the normal video signal from the video detection circuit 5 and creates a stereoscopic video signal for alternately switching the video signal for the left eye and the video signal for the right eye for each field. Either one of the video signal and the stereoscopic video signal from the tuning circuit 3
Stereoscopic video circuit 1 selected based on switching signals A and B
3

The stereoscopic image device further includes a shutter switching signal transmission circuit 14 for converting the shutter switching signal from the channel selection circuit 3 into a remote control signal.

FIG. 2 shows the stereoscopic video circuit 13 shown in FIG. In FIG. 2, the stereoscopic video circuit 13 is a video conversion circuit 13 to which the normal video signal from the video detection circuit 5 is supplied.
a, a motion vector detection circuit 13d that detects the motion vector of the subject in the normal video signal, a CPU 13e that extracts the horizontal component using the motion vector from the motion vector detection circuit 13d as an input, and a horizontal component of the motion vector from the CPU 13e. Memory control circuit 13c controlled based on
And the field memory 13b whose delay amount is controlled by the memory control circuit 13c, and the above-described normal video signal and the delayed normal video signal from the field memory 13b as inputs, the left-eye video signal L and the right-eye video signal. A video conversion circuit 13a that creates a signal R, and a video composition that creates a stereoscopic video signal by converting the left-eye video signal R and the right-eye video signal R created by the video conversion circuit 13a into serial signals. It is composed of a circuit 13f and a video switching circuit 13g for selectively switching between a normal video signal and a stereoscopic video signal by a signal from the channel selection circuit 3.

FIG. 3 is a block diagram of the shutter switching signal transmission circuit 14 in FIG. 1, and FIG. 4 is a block diagram of an eyeglass device for viewing a stereoscopic image. In FIG. 3, a shutter switching signal transmission circuit 14 includes a system control unit 14 that receives a shutter switching synchronization signal as an input.
b and a modulation circuit 14c that receives an output signal from the system control unit 14b, an infrared LED drive circuit 14d connected to the microcomputer 14a, and an infrared LED drive circuit d. And an infrared LED 14e connected to.

Here, the system control unit 14b has a shutter switching L / R determination register that stores a left-eye signal or a right-eye signal, and this register is left at the initial start (when the power is turned on). The eye (L) is set. Note that the initial setting of this register may be for the right eye (R).

The output terminal 14f is an output terminal for a shutter switching remote control signal for controlling the eyeglass device by wire.

In FIG. 4, the eyeglass device includes a light receiving diode 17 for converting a remote control signal transmitted by infrared rays from the shutter switching signal transmission circuit 14 into an electric signal, and an integrating circuit for amplifying the electric signal and removing a carrier wave. And a receiving circuit 19 having a waveform shaping circuit, an oscillating circuit 20 for generating a reference clock of the system control section 21, a remote control signal from the receiving circuit 19 and a reference clock from the oscillating circuit 20 as input, and a liquid crystal shutter switching signal. System control unit 21 for generating
A liquid crystal drive circuit 23 connected to the system control unit 21, a liquid crystal shutter 24 controlled by a signal from the liquid crystal drive circuit 23, a power supply 25 having a lithium battery or the like, and switching between operation / non-operation of the eyeglass device. And a switch 22.

The input terminal 18 is an input terminal for a shutter switching remote control signal for controlling the eyeglass device by wire. The liquid crystal shutter 24 is composed of a right-eye shutter and a left-eye shutter.

Next, the general operation of the stereoscopic image device of the present invention will be described. Hereinafter, after changing the display channel from the channel button of the remote control transmitter (not shown), the display of the changed image is changed to the stereoscopic image switching button (hereinafter,
Abbreviated as 3D button. The case where the display is switched to the stereoscopic image display will be described. At this time, the tuning circuit 3 outputs to the tuner 1 a channel switching signal having a different voltage depending on the selected channel.

In the tuner 1, the local oscillation frequency changes according to the channel switching signal, and the normal video signal is output to the video intermediate frequency amplifier circuit 4, and the signal is sent to each stereoscopic video circuit 13 as shown in FIG. Is entered.

In the stereoscopic video circuit 13, the normal video signal is supplied to one end of the video conversion circuit 13a and also to the field memory 13d.

The field memory 13d is variably controlled by the memory control circuit 13c on a field-by-field basis within a delay amount of 0 to a maximum of 60 fields (about 1 second in the NTSC system). Further, this variable unit may be a small unit of one field or less.

The field memory output is supplied to the video conversion circuit 13a. This video conversion circuit 1
3a outputs the left-eye video signal L and the right-eye video signal R to the video switching circuit 13g, but is controlled so that the output state is switched according to the movement of the subject.

The normal video signal is further supplied to the motion vector detection circuit 13d, and after detecting a motion vector corresponding to the motion between fields, it is supplied to the CPU 13e.

The CPU 13e extracts a horizontal component from the motion vector, and in response to this, the memory control circuit 1
Control 3c. That is, when the motion of the subject is large and the motion vector is large, the delay amount of the field memory 13b is controlled to be small, and when the motion of the subject is small or the motion vector is small such as during slow motion reproduction, the delay is delayed. The amount is controlled to be large.
Note that the maximum number of delay fields in the field memory 13b is 60 fields, which corresponds to 1 second of the NTSC system and is a time that can correspond to a normal video scene, but when used for slower slow motion reproduction. May use a large-capacity memory of 60 fields or more. In addition, several hundreds for slow-motion slow-motion playback.
You can delay the field.

Further, the CPU 13c sets the normal video signal as the left-eye video signal when the direction of the motion vector is from left to right, and the delayed normal video signal as the right-eye video signal in the opposite case. The video conversion circuit 13a is controlled.

The left-eye video signal L and the right-eye video signal R thus created are serial stereoscopic video signals generated by the video synthesizing circuit 13f at the clock (120 Hz) from the tuning circuit 3. It is input to the video switching circuit 13g.

In the video switching circuit 13g, the normal video signal is also input, and the stereoscopic video signal is selected by the first switching signal A from the channel selection circuit 3 generated by pressing the 3D button.

The selected stereoscopic video signal is output to the CRT 8 via the video amplifier circuit 6.

On the other hand, when switching channels, the tuning circuit 3
From this, a shutter switching signal is input to the system control unit in the microcomputer 14a.

The shutter switching signal is 1 /
Every 120 seconds (120 Hz), a high signal is output for the left eye signal and a low signal is output for the right eye signal, and the system control unit 14b determines whether the signal is for the left eye or the signal for the right eye.

FIG. 5 is a timing chart showing the state of infrared light for controlling the eyeglass device. Here, (a) is a shutter switching synchronization signal, and (b) is the infrared LED 14e.
Is a shutter switching remote control transmission signal modulated by a carrier wave to be transmitted by. Further, (c) is a signal obtained by removing the carrier component from the shutter switching remote control transmission signal for controlling the wired eyeglass device. The signal (c) is synchronized with the above-mentioned shutter switching remote control transmission signal.

Here, the shutter switching signal for the left eye (L
The rising edge of 1) is the shutter switching synchronization signal (a)
The time t0 lags behind the trailing edge of the time is because it takes a certain time for the system control unit 14b to determine the shutter switching synchronization signal.

Next, in the period C, the shutter switching synchronization signal (a) becomes high level. Therefore, in the period C, the shutter switching signal (R1) for the right eye, which consists of two pulses separated by time t6 from the system control unit 14b.
Is output. Here, the rise of the shutter switching signal for the right eye (R1) is delayed by the time t4 from the rise of the shutter switching synchronization signal (a), which is constant in the determination of the shutter switching synchronization signal in the system control unit 14b. This is because it takes time. After that, this operation is repeated according to the shutter switching synchronization signal.

Here, the time t0 until the left eye shutter switching signal is output and the time t4 until the right eye shutter switching signal is output are set to be the same time in the system control unit 14b. ing.

Further, the left eye shutter switching signal and the right eye shutter switching signal are distinguished by the time difference between t2 and t6, and it is not necessary to be discriminated by this method, but in the present embodiment, the left is selected. The time t2 of the eye shutter switching signal is 2 times the time t6 of the right eye shutter switching signal.
It is set to double.

The frequency of the infrared modulation signal for remote control of a television receiver, a video tape recorder, an air conditioner, etc. is set to the driving frequency of the high frequency lighting fluorescent lamp in order to reduce the influence and interference of noise such as the high frequency lighting fluorescent lamp. Is set to 33 kHz or less or 40 kHz or more, and the frequency of the modulation signal for remote control is set to 33 kHz to 40 kHz. In this embodiment, the frequency of modulating the infrared light of the remote control device used for controlling the operation of the stereoscopic image device itself is 3
It is set to 8 kHz (first modulation frequency).

On the other hand, the signal of (b) is used as a modulation signal of infrared light for controlling the eyeglass device, and t1, t
A signal having a frequency of 58 kHz (second modulation frequency) exists in the period of 3, t5, and t7. In this way, the frequency of the signal that modulates the infrared light for the eyeglass device is different from the frequency that modulates the infrared light of the remote controller for controlling the stereoscopic image device, so that mutual influences should be reduced. You can Further, the current flowing through the LED 14e is set to about half that in the case of the LED of the remote control device that controls the operation of the stereoscopic image device itself, and the level of infrared light is reduced. Since the level of the infrared light is set low, the infrared light for controlling the eyeglass device is less likely to affect the remote control device of other equipment used at home.

FIG. 6 is a waveform diagram showing a signal waveform in the eyeglass device, where (a) is a shutter switching synchronizing signal and (b) is a shutter switching synchronizing signal.
Is a remote control transmission signal output from the light receiving circuit 19. As described above, the shutter switching synchronization signal is generated from the remote control transmission signal, and the liquid crystal shutter 24 is controlled. As a result, the observer can obtain stereoscopic vision.

FIG. 7 is a waveform diagram showing the state of infrared light for controlling the eyeglass device in another embodiment of the present invention. In this embodiment, in addition to the frequency of 58 kHz, 150 kHz
The modulated signal of is used. This third modulated signal is
Modulated signal in the first embodiment (frequency of 58 kHz;
It is inserted into the L level period of FIG. 5B) (see the shaded portion of FIG. 7). For this purpose, modulation signals of two frequencies (58 kHz and 150 kHz) may be created at the same time, and the supply to the modulation circuit may be switched.

This is done in the case of the first embodiment.
Depending on the characteristics of the receiving part of other equipment, it may be 58kH intermittently.
Since the infrared light modulated by the z modulation signal is input to the receiving unit, the sensitivity of the receiving unit as a whole is increased, and the infrared light of the remote controller for the eyeglass device is affected and malfunctions. This is because there is a risk.

As shown in FIG. 7, when infrared light is modulated by a signal having a frequency of 150 kHz while the signal is not modulated by a signal of 58 kHz, infrared light is always input to other devices, for example, a light receiving part such as an air conditioner. As a result, the sensitivity of the light receiving unit is reduced, and the possibility of malfunction is reduced.

[0047]

As described above, according to the present invention, it is possible to prevent malfunction of other equipment by the remote control device for controlling the eyeglass device, which is advantageous.

[Brief description of drawings]

FIG. 1 is a block diagram of a stereoscopic image device of the present invention.

FIG. 2 is a block diagram of a stereoscopic video circuit.

FIG. 3 is a block diagram of a shutter switching signal transmission circuit.

FIG. 4 is a block diagram of an eyeglass device.

FIG. 5 is a waveform diagram on the stereoscopic image device side.

FIG. 6 is a waveform diagram on the side of the eyeglass device.

FIG. 7 is a waveform chart in the second embodiment.

FIG. 8 is a block diagram showing a configuration of a conventional example.

[Explanation of symbols]

 1 Tuner 3 Tuning Circuit 3a Power Shut-off Input Detection Circuit 4 Intermediate Frequency Amplifier Circuit 5 Video Detection Circuit 6 Video Amplifier Circuit 8 CRT 13 Stereoscopic Video Circuit 14 Shutter Switching Signal Transmission Circuit

Claims (6)

[Claims] 1. A left-eye image and a right-eye image for displaying a stereoscopic image in a stereoscopic image device that obtains a stereoscopic image by using a blocking unit that alternately blocks a field of view of a right eye or a left eye of an observer. Display means for alternately displaying images, blocking means for alternately blocking the visual field of the right eye or left eye of an observer of this stereoscopic image, and a signal of a first frequency for controlling the operation of the stereoscopic image device are modulated. A remote control device using a first infrared light and a second infrared light modulated with a second frequency for a control signal for controlling the interruption of the interruption means in synchronization with the display of the stereoscopic image. A stereoscopic video device comprising a control signal transmission unit for transmitting. 2. The stereoscopic imager according to claim 1, wherein the output level of the second infrared light is lower than the output level of the first infrared light. 3. The stereoscopic imaging device according to claim 3, wherein the second frequency is approximately 58 kHz and the first frequency is 38 kHz. 4. A left-eye image and a right-eye image for displaying a stereoscopic image in a stereoscopic image device that obtains a stereoscopic image by using a blocking unit that alternately blocks the field of view of the right eye or the left eye of an observer. Display means for alternately displaying images, blocking means for alternately blocking the visual field of the right eye or left eye of an observer of this stereoscopic image, and a signal of a first frequency for controlling the operation of the stereoscopic image device are modulated. And a remote control device that uses a first infrared light, and a second control signal that controls the interruption of the interruption means in synchronization with the display of the stereoscopic image at a second frequency and a second frequency. And a control signal transmitting means for transmitting by infrared light. 5. The second infrared light is for controlling switching between the left-eye image and the right-eye image by the second frequency component, and the third frequency component is the third frequency component. Two
The stereoscopic image device according to claim 4, wherein the stereoscopic image device is included in a portion where the frequency component of (1) is missing. 6. The stereoscopic imager according to claim 5, wherein the second frequency is 58 kHz and the third frequency is 150 kHz.