JP4587940B2 - Remote control system and display device - Google Patents

Description

  The present invention relates to a remote control system for optically controlling the position of a cursor displayed on a display screen from a remote location using an optical remote control transmitter and a remote control receiver, and display by such a remote control system. The present invention relates to a display device configured to control a cursor displayed on a screen.

  Conventionally, a remote control device that operates a cursor displayed on a display surface of a display device from a remote position is known. As an example of a remote control device, in the case of a personal computer (personal computer), remote control is performed using a mouse. In the case of a television receiver, commands such as a cross key of an infrared remote controller (infrared remote control) and a jog shuttle are commanded. It is known that an optical code signal for transmission is transmitted, and a command optical code signal is identified on the remote control receiver side to control the position of the cursor.

  Also, as a method of moving the cursor in the direction of shaking by shaking the remote control transmitter, the remote control transmitter has a built-in gyro sensor, converts the swing angle recognized by this gyro sensor into a code signal, and wirelessly displays the display device (remote control Devices that transmit code signals to the receiver side have been put into practical use (for example, projectors, personal computers, IT-TVs).

In addition, an optical remote coordinate pointing device using a light emitting element is proposed that includes a remote control body having a light emitting element and a controller unit that receives light from the remote control body and detects an indicated location. (For example, refer to Patent Document 1). Since the remote control body of the remote coordinate pointing device disclosed in Patent Document 1 has a total of five light emitting elements and is configured to simultaneously emit light by combining two or more light emitting elements, signal processing is complicated. It has become a structure.
Japanese Patent No. 3273531

  When the cursor operating means is a mouse and the display device is a personal computer monitor, the cursor can be finely controlled and can be smoothly operated even if there is a fine selected button at an arbitrary position in the screen. However, when applied to a television receiver in a living room (hereinafter sometimes referred to as a TV), in a mode in which a mouse is placed on a table and operated, it is arranged and operated at a free space position. There is a problem that the operation space is limited and the operability is lacking as compared with a remote control capable of performing the above.

  Further, in the operation using the cross key of the infrared remote controller applied to the TV, it is difficult to smoothly operate the cursor, and there is a problem that the position of the cursor cannot be precisely controlled.

  Also, the gyro sensor is mounted in the remote control transmitter, but it is necessary to mount at least two expensive gyro sensors in order to recognize the swing angle in the horizontal direction and the swing angle in the vertical direction. When mounted on a machine, there is a problem that it becomes a very expensive remote control transmitter and the shape becomes large.

  In addition, the remote control body of the remote coordinate pointing device disclosed in Patent Document 1 has a problem that the signal processing is complicated and the circuit configuration is complicated, so that an inexpensive remote control body cannot be configured.

  The present invention has been made in view of such circumstances, and is directly linked to the displacement (for example, swinging operation) of the remote control transmitter while taking advantage of the optical advantage that the configuration is easy and the size can be reduced. The object is to realize cursor movement (direct operational feeling).

  That is, the first light emitting element and the second light emitting element that are symmetrically arranged in the first axis direction in the remote control transmitter, and the third light emitting element that is symmetrically arranged in the second axis direction intersecting the first axis direction And the fourth light emitting element, the first light emitting element to the fourth light emitting element are sequentially emitted in a time division manner, and the first optical signal to the fourth optical signal are transmitted to the remote control receiver. Displacement of the remote control transmitter in the first axis direction is detected from the amplitude relative relationship based on the second optical signal, and remote control transmission in the second axis direction is detected from the amplitude relative relationship based on the third optical signal and the fourth optical signal By detecting the displacement of the machine, it is possible to easily control the position of the cursor displayed on the display screen with high accuracy, and to provide an optical remote control system that can be reduced in size and is inexpensive. Objective.

  Further, the present invention provides a display capable of easily controlling the position of the cursor with high accuracy by adopting a configuration in which the position control of the cursor displayed on the display screen is controlled by the remote control system according to the present invention. Another object is to provide an apparatus.

A remote control system according to the present invention includes a remote control transmitter having a position detection light emitting unit that emits a position detection light signal, a light reception signal processing unit that detects a position detection reception signal from the received position detection light signal, and the position A remote control receiver having a displacement detection unit for detecting a displacement of the remote control transmitter based on a detection reception signal, and a cursor control unit for controlling the position of the cursor displayed on the display screen by coarse adjustment and fine adjustment. In the remote control system, the position detection light-emitting unit includes a first light-emitting element and a second light-emitting element that are arranged symmetrically with respect to a central axis of the remote control transmitter in a first axis direction, and the first axis. A third light emitting element and a fourth light emitting element which are arranged symmetrically with respect to the central axis in a second axis direction intersecting the direction, and the first light emitting element to the fourth light emitting element are arranged at pulse positions. A light-emitting element control unit that sequentially drives the first optical signal to the fourth optical signal as the position detection optical signal by sequentially driving in a time-sharing drive system according to the tone, and the light reception signal processing unit includes the first light A first reception signal to a fourth reception signal corresponding to a signal to a fourth optical signal, respectively, are detected as the position detection reception signal, and the displacement detection unit converts the waveform of the position detection reception signal into the first reception signal. An output detection unit that obtains a first output signal to a fourth output signal corresponding to each of the fourth reception signals as a position detection output signal, and an amplitude relative relationship between the first output signal and the second output signal. Arithmetic processing for calculating the displacement of the remote control transmitter in the axial direction and calculating the displacement of the remote control transmitter in the second axial direction from the amplitude relative relationship between the third output signal and the fourth output signal The cursor control unit controls the position of the cursor based on the displacement of the remote control transmitter in the first axis direction and the displacement of the remote control transmitter in the second axis direction. and tare is, the coarse adjustment, the is based on the displacement of the remote control transmitter, wherein the fine adjustment, the fine said adjusting optical code signal remote control transmitter as a position information for finely adjusting the position of the cursor transmitted from the fine adjustment alternative signal generating means machine has to the remote control receiver, and wherein the configuration entirety in Rukoto performed based on the remote control the fine adjustment optical code signal received by the receiver.

With this configuration, it is possible to optically detect the displacement of the remote control transmitter in each of the first and second axis directions in two dimensions, and to control the cursor position in two dimensions corresponding to the displacement. Therefore, the position of the cursor can be easily controlled with high accuracy, and the optical remote control system is miniaturized. In addition, the cursor position can be finely adjusted using the optical code signal for fine adjustment and is not affected by the swing angle of the transmitter. Therefore, the cursor position can be finely adjusted with higher accuracy and stability. It becomes possible.

  The remote control system according to the present invention is characterized in that the fine adjustment substitute signal generating means is configured to be driven and controlled by a cross key.

  With this configuration, it is possible to perform fine adjustment with good operability and stability.

  The remote control system according to the present invention is characterized in that the fine adjustment alternative signal generating means is configured to be driven and controlled by a capacitive touch pad.

  With this configuration, it is possible to perform fine adjustment with good operability and stability.

  The remote control system according to the present invention is characterized in that the coarse adjustment function is disabled when the fine adjustment substitute signal generating means is driven and controlled.

  With this configuration, stable fine adjustment can be performed without being affected by the swing angle of the transmitter.

  The display device according to the present invention is a display device configured to control the position of a cursor displayed on a display screen by a remote control system, wherein the remote control system is the remote control system according to the present invention. To do.

  With this configuration, the display device includes an optical remote control system that can easily control the position of the cursor with high accuracy.

  According to the remote control system of the present invention, the displacement of the remote control transmitter in each of the two dimensions in the first axis direction and the second axis direction is optically detected, and the cursor position is set to 2 corresponding to the displacement. Since the control is performed in three dimensions, the position of the cursor can be easily controlled with high accuracy and good operability, and an inexpensive optical remote control system that can be reduced in size can be provided.

  According to the display device according to the present invention, since the remote control system according to the present invention is applied, it is possible to provide a display device capable of easily controlling the position of the cursor with high accuracy.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<Principle of the present invention>
FIG. 1 is a conceptual diagram showing an outline of a main part of a display device to which a remote control transmitter, a remote control receiver, and a remote control system constituting a remote control system according to the present invention are applied. FIG. The position state of the cursor displayed on the display screen of the display device before transmitting the signal is shown, and (B) shows the position state of the cursor displayed on the display screen of the display device after the remote control signal is transmitted.

  A remote control system 1 according to the present invention (hereinafter may be simply referred to as system 1) is a so-called infrared optical remote controller system (infrared remote control system), and uses a position detection light signal LSp as a remote control signal. Transmitting optical remote control transmitter 2 (hereinafter may be simply referred to as transmitter 2) and position detection optical signal LSp and receiving remote control instruction content (displacement of transmitter 2) from its magnitude The main component is a remote control receiver 3 (hereinafter simply referred to as receiver 3) that grasps (detects) the above. The transmitter 2 is a plan view (upper surface) as viewed from the upper side in the vertical direction in use.

  In the present invention, what is remotely controlled by the system 1 is a cursor 4 p such as a pointer displayed on the display screen 4 d of the display device 4. The display device 4 is a monitor that displays information such as images and data, or a television receiver. The display screen 4d is a front view of the usage state having a plane in the vertical direction as seen from the horizontal direction.

  The light receiving unit 3p of the receiver 3 is arranged (built in) in the front frame part of the display device 4, but the light receiving unit 3p can be arranged to overlap the display screen 4d. The main configuration of the receiver 3 is arranged (built in) inside the display device 4.

  Since the transmitter 2 is operated in space (for example, scanning and swinging), the first axis direction X (for example, corresponding to the horizontal direction) and the second axis direction Y (for example, the vertical direction orthogonal to the vertical direction) Or the central axis Axc of the transmitter 2 can be freely scanned in a direction inclined with respect to them (the neck of the transmitter 2 can be freely swung).

  The first axial direction X and the second axial direction Y are preferably defined so as to be orthogonal to each other. However, the present invention is not limited to this, and it suffices if the optical signal in the first axis direction X and the optical signal in the second axis direction Y can be distinguished and detected while being close to orthogonal.

  The system 1 causes the receiver 3 to receive the position detection light signal LSp transmitted from the transmitter 2, and the contents (absolute value magnitude) of the received position detection light signal LSp (remote control signal). The scanning state of the transmitter 2 is detected on the basis of the relative ratio, and is displayed on the display screen of the display device 4 according to the scanning state (for example, swinging scan to the right and swinging scan to the left). The position of the cursor 4p is controlled.

  FIG. 4A shows the cursor 4pa before moving, and FIG. 4B shows the cursor 4pb and moving trajectory 4pc after moving. That is, when the transmitter 2 is scanned rightward, the cursor 4p displayed on the display screen 4d is scanned from the left side (cursor 4pa) to the right side (cursor 4pb) corresponding to the scanning.

  The transmitter 2 has a center axis Axc as a reference axis serving as a position reference in correspondence with the transmission direction of the position detection optical signal LSp. The first light emitting element LED1 and the second light emitting element LED2 are arranged symmetrically with respect to the central axis Axc in the horizontal direction as the first axial direction X intersecting the central axis Axc of the transmitter 2. . That is, the intersection of the central axis Axc and the horizontal direction X can be defined as the origin, and the first light emitting element LED1 and the second light emitting element LED2 are arranged symmetrically with respect to the origin.

  Here (description of the principle), for the sake of simplicity, remote control of the cursor 4p in the horizontal direction (lateral direction of the display screen 4d) by the first light emitting element LED1 and the second light emitting element LED2 will be described.

  The first light emitting element LED1 has an optical axis Ax1 and a light intensity distribution characteristic LD1. The second light emitting element LED2 has an optical axis Ax2 and a light intensity distribution characteristic LD2. The optical axes Ax1 and Ax2 are preferably inclined in opposite directions with respect to the central axis Axc in order to improve sensitivity and accuracy, but are not limited thereto. For example, the same effect can be obtained by increasing the distance between the first light emitting element LED1 and the second light emitting element LED2.

  In addition, the light intensity distribution characteristics LD1 and LD2 are preferably substantially equivalent characteristics in order to improve sensitivity and accuracy, but the present invention is not limited to this, and it is only necessary to specify the relative relationship.

  In the state of FIG. 5A, since the central axis Axc (transmitter 2) is directly facing the light receiving unit 3p, each position detection light transmitted from the first light emitting element LED1 and the second light emitting element LED2 is used. The signal LSp (the position detection optical signal by the first light emitting element LED1 is the first optical signal LS1, and the position detection optical signal by the second light emitting element LED2 is the second optical signal LS2, but if it is not necessary to distinguish, the position LSP The position detection light signal LSp received by the receiver 3 is approximately equal in magnitude to the position detection reception signal Sr (see Embodiment 1, FIG. 4) and position detection. It is detected as an output signal Sp (see Embodiment 1, see FIG. 4). Therefore, the cursor 4p maintains (displays) the state before the movement (cursor 4pa).

  In the drawing, since the central axis Axc is described as being inclined with respect to the light receiving unit 3p, it does not seem to be directly facing the light receiving unit 3p. However, in the actual system 1, the transmitter 2 Since the distance between the light receiving unit 3p and the light receiving unit 3p is sufficiently longer than the configuration of the transmitter 2 and the light receiving unit 3p, as described above, each position detection light signal transmitted from the first light emitting element LED1 and the second light emitting element LED2 Since LSp is detected as almost equal by the receiver 3, the transmitter 2 can be handled as facing the light receiving unit 3p.

  Next, when the transmitter 2 is moved in the horizontal direction so that the optical axis Ax1 of the first light emitting element LED1 is opposed to the light receiving unit 3p of the receiver 3, for example, the light amount from the first light emitting element LED1 (first optical signal LS1). ) Is greater than the amount of light from the second light emitting element LED2 (second optical signal LS2), it can be detected by the light receiving unit 3p (receiver 3) that the transmitter 2 has moved in the right direction.

  The state of FIG. 5B shows a state where the movement of the transmitter 2 is controlled so that the position of the cursor 4p is indicated by the movement locus 4pc, and the cursor 4pb after the movement is displayed.

  Note that the first light signal LS1 from the first light-emitting element LED1 and the position detection light signal LSp from the second light-emitting element LED2 can be distinguished from each other by changing the timing of light emission. That is, the transmitter 2 is configured to be able to transmit the position detection light signal LSp as a pulse position modulation (PPM) signal by driving the first light emitting element LED1 and the second light emitting element LED2 by the time division driving method. By using pulse position modulation, it is possible to avoid the influence of disturbance light, EMC (electromagnetic environment) noise, and the like.

  In the description of the present principle, the control of the cursor 4p in the horizontal direction by the first light emitting element LED1 and the second light emitting element LED2 arranged in the horizontal direction has been described, but the light emitting elements (third light emitting element LED3 and By arranging the fourth light emitting element LED4 (see Embodiment 1, FIG. 2), it is possible to control the cursor 4p in the vertical direction as well as in the horizontal direction. That is, the movement control of the position of the cursor 4p on the two-dimensional plane of the display screen 4d can be performed.

  The display device 4 can control the position of the cursor 4p with high accuracy and easily by controlling the position of the cursor 4p displayed on the display screen 4d by applying the optical remote control system 1. Become.

<Embodiment 1>
FIG. 2 is an explanatory diagram showing an outline of the appearance of the remote control transmitter according to the first embodiment of the present invention, and FIG. 2 (A) is a plan view (top view) viewed from the upper side in the vertical direction in use. (B) is the front view seen from the arrow B direction of (A).

  Symmetrically symmetrical about the intersection of the central axis Axc of the transmitter 2 and the first axis direction X (corresponding to the horizontal direction) of the front end 2t of the transmitter 2 (the front portion of the transmitter 2 facing the light receiving portion 3p). A first light-emitting element LED1 (arranged on the right side in the front view) and a second light-emitting element LED2 (arranged on the left side in the front view) are arranged at the tip 2t of the transmitter 2.

  The first light-emitting element LED1 and the second light-emitting element LED2 are arranged on an inclined surface that is appropriately formed at the distal end portion 2t so as to constitute an optical axis Ax1 and an optical axis Ax2 that are inclined opposite to each other with respect to the central axis Axc. It is. The reason why the optical axis Ax1 and the optical axis Ax2 are inclined to the opposite sides with respect to the central axis Axc is to improve detection accuracy and detection sensitivity as described in the explanation of the principle.

  1st light emitting element LED1 and 2nd light emitting element LED2 are set as the structure which light-emits position detection optical signal LSp (1st optical signal LS1, 2nd optical signal LS2, refer FIG. 3) at different timing.

  The second axis direction Y (corresponding to the vertical direction) intersecting the first axis direction X (which is orthogonal here for the sake of simplicity) also corresponds to the central axis Axc and the second axis similarly to the first axis direction X. A third light-emitting element LED3 (arranged on the upper side in the front view) and a fourth light-emitting element LED4 (arranged on the lower side in the front view) are arranged at the front end portion 2t of the transmitter 2 symmetrically vertically about the intersection with the axial direction Y. It is.

  The third light-emitting element LED3 and the fourth light-emitting element LED4 are arranged on an inclined surface that is appropriately formed at the distal end portion 2t so as to constitute an optical axis Ax3 and an optical axis Ax4 that are inclined opposite to each other with respect to the central axis Axc. It is. The reason why the optical axis Ax3 and the optical axis Ax4 are inclined to the opposite sides with respect to the central axis Axc is to improve the detection accuracy and the detection sensitivity like the optical axis Ax1 and the optical axis Ax2.

  3rd light emitting element LED3 and 4th light emitting element LED4 are set as the structure which light-emits position detection optical signal LSp (3rd optical signal LS3, 4th optical signal LS4. Refer FIG. 3) at different timing.

  The first light emitting element LED1 and the second light emitting element LED2 can detect the moving state (swinging state, swing angle θ) of the transmitter 2 in the horizontal direction (left-right direction). The third light emitting element LED3 and the fourth light emitting element LED3 The moving state (swinging state, swinging angle θ) of the transmitter 2 in the vertical direction (vertical direction) can be detected by the light emitting element LED4. Since it is possible to detect the movement state of the transmitter 2 in the horizontal direction and the vertical direction, respectively, it is possible to detect the two-dimensional movement of the transmitter 2 by combining them, so that the cursor 4p is displayed. The movement control of the position on the screen 4d can be performed two-dimensionally.

  The tip 2t has a light emission period (detection period) of the position detection optical signal LSp on a plane orthogonal to the central axis Axc (a plane parallel to a plane formed by intersecting the first axis direction X and the second axis direction Y). ) It includes a start signal light emitting element LEDs that emits a detection start light signal LSs (see FIG. 3) indicating the start of Tc (see FIG. 3).

  The main body 2b of the transmitter 2 includes a light emission control button 2sw. When the light emission control button 2sw is turned on (for example, pressed), detection of the movement (swinging) state of the transmitter 2 is started, and the system 1 (receiver 3, see FIG. 4) detects the movement state of the transmitter 2 (cursor). 4p position movement control) is started. That is, the start signal light-emitting element LEDs, the first light-emitting element LED1, the second light-emitting element LED2, the third light-emitting element LED3, and the fourth light-emitting element LED4 are sequentially driven, and the detection start light signal LSs and the position detection light signal LSp are the first. The one optical signal LS1, the second optical signal LS2, the third optical signal LS3, and the fourth optical signal LS4 are sequentially emitted and transmitted toward the light receiving unit 3p.

  As described above, the transmitter 2 includes four light-emitting elements for position detection (first light-emitting element LED1, second light-emitting element LED2, third light-emitting element LED3, and fourth light-emitting element LED4) and 1 indicating the start of the detection cycle. Two light-emitting elements (start signal light-emitting elements LEDs) are mounted (hereinafter simply referred to as light-emitting elements LED when there is no need to distinguish them).

  In addition, arrangement | positioning of 1st light emitting element LED1 thru | or 4th light emitting element LED4 is not limited to a cross-shaped arrangement | positioning. For example, it can be arranged in a T-shape or L-shape. That is, in each of the first axis direction X and the second axis direction Y, the corresponding two light emitting elements LED may be arranged symmetrically with respect to the central axis Axc.

  FIG. 3 is an explanatory diagram showing a schematic configuration of the position detection light-emitting unit of the remote control transmitter according to the first embodiment of the present invention, where (A) is a schematic circuit diagram of the position detection light-emitting unit, and (B) is each It is a wave form diagram which shows the light emission timing of the optical signal light-emitted from a light emitting element.

  The transmitter 2 includes a battery Bat as a power source, and a position detection light emitting unit 2d is connected to the battery Bat. The position detection light emitting unit 2d emits light for driving and controlling the light emitting element LED (the start signal light emitting element LEDs and the first light emitting element LED1, the second light emitting element LED2, the third light emitting element LED3, and the fourth light emitting element LED4). An element control unit 2dc is provided.

  The light emitting element control unit 2dc drives and controls the light emitting element LED by the switching elements Qs, Q1, Q2, Q3, and Q4 so that the light emitting element LED emits light at an appropriate timing. The start signal light emitting elements LEDs are driven and controlled by the switching element Qs to emit the detection start light signal LSs. The first light emitting element LED1 is driven and controlled by the switching element Q1, the second light emitting element LED2 is driven by the switching element Q2, the third light emitting element LED3 is driven by the switching element Q3, and the fourth light emitting element LED4 is driven by the switching element Q4. The first optical signal LS1, the second optical signal LS2, the third optical signal LS3, and the fourth optical signal LS4 are emitted as the detection optical signal LSp.

  When the light emission control button 2sw is pressed (turned on), the start signal light emitting elements LEDs are driven and the detection start light signal LSs emits light with a light emission period (detection period) Tc and a light emission pulse width Tss. Following the detection start light signal LSs, the first light-emitting element LED1, the second light-emitting element LED2, the third light-emitting element LED3, and the fourth light-emitting element LED4 are sequentially driven by the time-division driving method by pulse position modulation within the light emission period Tc. Is done.

  That is, the first light signal LS1 from the first light emitting element LED1, the second light signal LS2 from the second light emitting element LED2, the third light signal LS3 from the third light emitting element LED3, and the fourth light signal LS4 from the fourth light emitting element LED4. Each light is emitted with a light emission pulse width Ts. Although only one period is shown in the figure, highly accurate detection can be performed by repeating an appropriate number of times. An appropriate no-signal period Tn (see FIG. 5) is provided between the detection start optical signal LSs, the first optical signal LS1, the second optical signal LS2, the third optical signal LS3, and the fourth optical signal LS4. is there.

  By making the light emission pulse width Tss and the light emission pulse width Ts different from each other, it is possible to reliably detect the start of the light emission period Tc, and accurate signal processing at the receiver 3 becomes possible. The light emission pulse width Ts is preferably the same for the first optical signal LS1, the second optical signal LS2, the third optical signal LS3, and the fourth optical signal LS4 from the viewpoint of ease of signal processing, but it is necessary to make them completely coincide with each other. Absent.

  Although it is preferable that the emission intensity Lp of the first optical signal LS1, the second optical signal LS2, the third optical signal LS3, and the fourth optical signal LS4 is the same, it is not limited thereto. That is, it is sufficient that the relative relationship is clear and fixed. However, the emission intensity Lp is the same for each of the first optical signal LS1 and the second optical signal LS2, and the third optical signal LS3 and the fourth optical signal LS4 that have a corresponding relationship in the same axial direction (X and Y respectively). It is preferable that

  The light emission intensity Lps of the detection start light signal LSs may be a value that can be detected by the receiver 3, and the circuit configuration of the light emitting element control unit 2dc is simplified if the light emission intensity Lps and the light emission intensity Lp are the same. be able to. The absolute values of the light emission intensities Lp and Lps may be obtained experimentally in consideration of the specifications of the system 1.

  The start signal light emitting elements LEDs need to emit light first, but the order of light emission of the first light emitting element LED1, the second light emitting element LED2, the third light emitting element LED3, and the fourth light emitting element LED4 corresponds to the arrangement at the tip 2t. As long as is clear, any order is acceptable.

  The detection start optical signal LSs and the position detection optical signal LSp (the first optical signal LS1, the second optical signal LS2, the third optical signal LS3, and the fourth optical signal LS4) are subjected to pulse position modulation as in a general infrared remote control system. It is. In addition, the light-emitting element LED is driven and controlled in a state where frequency modulation is performed by superimposing an appropriate high-frequency modulated wave (carrier wave), thereby preventing the influence of noise from the surrounding environment.

  Note that the detection start light signal LSs emitted from the position detection light emitting unit 2d and the first optical signal LS1, the second optical signal LS2, the third optical signal LS3, and the fourth optical signal LS4 as the position detection optical signal LSp in particular When it is not necessary to distinguish, the optical signal LS may be simply used.

  FIG. 4 is a circuit block diagram illustrating a schematic circuit configuration and a cursor control unit of the remote control receiver according to the first embodiment of the present invention.

  Optical signal LS (detection start optical signal LSs, first optical signal LS1, second optical signal LS2, third optical signal LS3, and fourth optical signal LS4 as position detection optical signal LSp emitted from position detection light emitting unit 2d. ) Is received by the photodiode 3pd included in the light receiving unit 3p of the receiver 3, is photoelectrically converted, and is input to the received light signal processing unit 31 as the received light signal Sd.

  The received light signal processing unit 31 is composed of a light receiving unit used in a general infrared remote control system. In other words, the amplifier 31a and the amplifier 31a are connected in a feedback manner to the amplifier 31a and the amplifier 31a so as to amplify the light-receiving signal Sd and perform reliable signal processing in the preceding stage of the light-receiving signal processing unit 31. Limiter 31b that adjusts to a certain range, amplifier 31c and amplifier 31d that amplifies the output of amplifier 31a to make signal processing easy, and a signal that is input from amplifier 31d is subjected to a frequency filter. A band-pass filter 31e that passes only a signal of a predetermined frequency to reduce noise, an amplifier 31c, and a gain adjustment circuit 31f that adjusts the gain of the amplifier 31d. The band-pass filter 31e can significantly reduce the noise of the frequency component away from the frequency of the modulated wave (modulation frequency).

  The band pass filter 31e includes a first reception signal Sr1 and a second reception signal corresponding to the first optical signal LS1, the second optical signal LS2, the third optical signal LS3, and the fourth optical signal LS4 as the position detection optical signal LSp, respectively. Sr2, the third received signal Sr3, and the fourth received signal Sr4 are output as the position detection received signal Sr. That is, the reception signal Sr processing unit 31 detects the first reception signal Sr1 to the fourth reception signal Sr4 as the position detection reception signal Sr, and the position detection reception signal Sr is transmitted from the bandpass filter 31e to the displacement detection unit 32. Entered.

  The gain adjustment circuit 31f is configured to adjust the gains (amplification factors) of the amplifier 31c and the amplifier 31d by a feedback control amount corresponding to the detected position detection reception signal Sr (output of the band pass filter 31e). Optical signal LS emitted by the time-division driving method (detection start optical signal LSs, first optical signal LS1, second optical signal LS2, third optical signal LS3, and fourth optical signal LS4 as position detection optical signal LSp) Each period is set to a high duty ratio at which the gain adjustment circuit 31f functions. The gain adjustment circuit 31f has a high-speed response circuit configuration that can quickly reduce the gain at least about the light emission period Tc or less.

  Due to the circuit configuration of the gain adjusting circuit 31f, continuous disturbance light noise (for example, disturbance light noise from an inverter fluorescent lamp) having a high duty ratio is constant in the photodiode 3pd of the light receiving unit 3p with a light amount equal to or greater than a certain value. When the signal is input with a duty ratio equal to or greater than the value, the gains of the amplifier 31c and the amplifier 31d can be reduced (measures against disturbance light noise from an inverter fluorescent lamp or the like).

  Further, due to the circuit configuration of the gain adjustment circuit 31f, when the optical signal LS emitted from the transmitter 2 (position detection light emitting unit 2d) disposed at a short distance is received, the received light signal processing unit 31 (with an excessive amount of received light) It is possible to reduce the saturation phenomenon that occurs in the amplifiers 31c, 31d) (a countermeasure against the amplifier saturation phenomenon). Since it is configured to respond at high speed, the amplitude fluctuation period of the position detection reception signal Sr corresponding to the optical signal LS received in the initial reception (several cycles of the light emission period Tc) when the gain is reduced can be kept short. It becomes possible.

  The displacement detection unit 32 includes an output detection unit 33, a noise filter 34, an AD conversion unit 35, and an arithmetic processing unit 36. The displacement detection unit 32 can perform appropriate signal processing.

  The output detection unit 33 performs waveform deformation processing (see FIG. 5), which will be described later, on the position detection reception signal Sr, and applies the first reception signal Sr1, the second reception signal Sr2, the third reception signal Sr3, and the fourth reception signal Sr4. The corresponding first output signal Sp1, second output signal Sp2, third output signal Sp3, and fourth output signal Sp4 are obtained as position detection output signals Sp. The output detection unit 33 is configured as an envelope waveform deformation circuit (see FIG. 6) that obtains an envelope by removing the modulation wave of the position detection reception signal Sr including the modulation wave. That is, the position detection output signal Sp can be obtained by converting it into amplitude values (the respective amplitude values of the first output signal Sp1, the second output signal Sp2, the third output signal Sp3, and the fourth output signal Sp4). .

  The noise filter 34 includes a CR filter, an LC filter, and the like, and removes noise that could not be removed by the bandpass filter 31e from the position detection output signal Sp. An envelope (amplitude value of the position detection output signal Sp) The accuracy can be further improved.

  The AD conversion unit 35 converts the amplitude value of the position detection output signal Sp obtained as an analog value into a digital value, which makes it possible to easily perform the calculation (digital calculation) in the calculation processing unit 36. Become.

  The arithmetic processing unit 36 performs a digital operation on the digitally-converted position detection output signal Sp to detect the movement state (displacement) of the transmitter 2 and controls the cursor control unit 40 that controls the position of the cursor 4p. A control signal (calculation output Sop, see FIG. 7) is output. The cursor control unit 40 controls the position of the cursor 4p displayed on the display screen 4d based on the calculation output Sop from the calculation processing unit 36.

  The arithmetic processing unit 36 and the cursor control unit 40 can be configured by using a central processing unit (CPU: microcomputer) built in the receiver 3 or the display device 4 together. According to the CPU, the position control of the cursor 4p can be performed based on the computer program.

  A detection circuit (first detection circuit 31g, second detection circuit 31h), an OR circuit 31i, an integration circuit (double integration circuit 31j), and a comparator (hysteresis comparator 31k) disposed in the subsequent stage of the received light signal processing unit 31. Is for demodulating a signal transmitted by a normal infrared remote control system. One of the two input terminals of the hysteresis comparator 31k serves as a threshold level setting terminal 31m so that the comparator characteristics can be adjusted as appropriate. Since the command reception signal corresponding to the command transmission signal transmitted by the normal infrared remote control system is output from the output terminal 31n of the hysteresis comparator 31k, the command operation of the normal infrared remote control system can be performed. .

  Further, it is configured by only the front part of the light reception signal processing unit 31 without providing the rear part of the light reception signal processing unit 31 (detection circuit, integration circuit, comparator, etc.), and the light reception signal processing unit 31 dedicated to the remote control system 1 is provided. It is also possible.

  FIG. 5 is a waveform diagram showing waveforms of an optical signal emitted from the position detection light emitting unit shown in FIG. 3 and a position detection reception signal and a position detection output signal detected and received by the receiver shown in FIG. A) shows an optical signal, (B) shows a position detection reception signal, and (C) shows a position detection output signal.

  As described above, the optical signal LS includes the detection start optical signal LSs and the first optical signal LS1, the second optical signal LS2, the third optical signal LS3, and the fourth optical signal LS4 as the position detection optical signal LSp. . In the present embodiment, for the sake of simplicity, the emission intensity Lps of the detection start optical signal LSs and the emission intensity Lp of the first optical signal LS1, the second optical signal LS2, the third optical signal LS3, and the fourth optical signal LS4 are the same. . An appropriate no-signal period Tn is set between the detection start optical signal LSs, the first optical signal LS1, the second optical signal LS2, the third optical signal LS3, and the fourth optical signal LS4. The other characteristics are the same as those shown in FIG.

  Since the first optical signal LS1, the second optical signal LS2, the third optical signal LS3, and the fourth optical signal LS4 have different inclinations with respect to the central axis Axc, they correspond to the displacement (inclination) of the central axis Axc with respect to the light receiving unit 3p. Thus, the magnitude of the light reception signal Sd detected by the photodiode 4pd is different. Therefore, the position detection reception signal Sr (first optical signal LS1, second optical signal LS2, third optical signal) detected as an output of the received light signal processing unit 31 (bandpass filter 31e) by performing signal processing on the received light signal Sd. The first reception signal Sr1, the second reception signal Sr2, the third reception signal Sr3, and the fourth reception signal Sr4) respectively corresponding to the LS3 and the fourth optical signal LS4 have amplitudes (voltage values) corresponding to the inclination with respect to the central axis Axc. Respectively.

  Similarly, the detection start reception signal Srs is also output from the bandpass filter 31e corresponding to the detection start light signal LSs. The position detection reception signal Sr and the detection start reception signal Srs are obtained as waveforms including a modulated wave.

  The position detection reception signal Sr and the detection start reception signal Srs are converted into envelope waveforms by the output detection unit 33 as an envelope waveform deformation circuit, and the corresponding position detection output signals Sp (first output signal Sp1, second output) are respectively converted. Signal Sp2, third output signal Sp3, fourth output signal Sp4) and detection start output signal Sps. For example, the first output signal Sp1 is shown as amplitude VL1, the second output signal Sp2 is shown as amplitude VL2, the third output signal Sp3 is shown as amplitude VL3, and the fourth output signal Sp4 is shown as amplitude VL4. When there is no need to distinguish between the amplitude VL1, the amplitude VL2, the amplitude VL3, and the amplitude VL4, the amplitude VL may be simply used.

  That is, the first optical signal LS1, the second optical signal LS2, the third optical signal LS3, and the fourth optical signal LS4 are converted into amplitudes VL1, VL2, VL3, and VL4 according to the inclination with respect to the central axis Axc by the output detection unit 33. Will be. Therefore, the moving direction (displacement) of the transmitter 2 can be detected by comparing the amplitudes corresponding to the same axis direction with each other (see FIG. 7).

  The amplitude VLs of the detection start output signal Sps only needs to be such that the detection start output signal Sps (light emission cycle Tc) can be detected by the header detection unit 36a (see FIG. 7).

  FIG. 6 is a circuit diagram showing an embodiment of the output detection unit shown in FIG.

  As described above, the output detection unit 33 functions as an envelope waveform deformation circuit, forms an envelope waveform of the position detection reception signal Sr, and outputs it as a position detection output signal Sp. The embodiment shown in FIG. 6 is an example, and the present invention is not limited to this.

  A basic circuit is configured by connecting operational amplifiers 33a, 33b, and 33c in a three-stage cascade connection and connecting power supply terminals to + Vcc and -Vcc. It can be easily configured by appropriately connecting C (electrolytic capacitor) R (resistance, variable resistance) and diode D having appropriate circuit constants as a bias circuit. The envelope waveform can be obtained by detecting the modulated wave with the circuit configuration shown in FIG.

  FIG. 7 is a schematic block diagram showing a schematic configuration block of the arithmetic processing unit shown in FIG.

  The arithmetic processing unit 36 includes a header detection unit 36a, an amplitude voltage calculation unit 36b, an amplitude ratio calculation unit 36c, and a logarithmic conversion unit 36d that are connected in cascade. The header detection unit 36a receives a position detection output signal Sp. The calculation output Sop is calculated (output) as a displacement (a value representing the displacement) of the transmitter 2 from the logarithmic conversion unit 36d. The calculation output Sop is input to the cursor control unit 40 (see FIG. 4), and the cursor control unit 40 corresponds to the position information (position coordinates of the cursor 4p, the X coordinate corresponding to the first axis direction X, and the second axis direction Y). Y coordinate). That is, the cursor control unit 40 controls the position of the cursor 4p as the cursor based on the displacement of the transmitter 2.

  The header part 36a detects the detection start output signal Sps based on the light emission pulse width Tss, and appropriately counts the light emission pulse width Ts and the no-signal period Tn corresponding to the light emission period (detection period) Tc, thereby detecting the position detection output. The first output signal Sp1, the second output signal Sp2, the third output signal Sp3, and the fourth output signal Sp4 are detected (specified) as the signal Sp.

  For example, the amplitude voltage calculation unit 36b samples the light emission period Tc 30 times (detects the light emission period Tc for 30 periods), calculates the average value of 30 times for each of the amplitudes VL1, VL2, VL3, and VL4, and performs control. The amplitudes VL1, VL2, VL3, and VL4 (for comparing the amplitude relative relationship) are calculated (specified).

  For the first axis direction X, the amplitude ratio calculation unit 36c obtains the ratio between the amplitude VL1 and the amplitude VL2 (the amplitude ratio or the output ratio as an amplitude relative relationship), that is, the amplitude VL1 / amplitude VL2, and the second axis direction For Y, the ratio between the amplitude VL3 and the amplitude VL4, that is, the amplitude VL3 / amplitude VL4 is calculated.

  The logarithmic conversion unit 36d calculates the logarithm of the amplitude ratio (VL1 / VL2, VL3 / VL4) obtained by the amplitude ratio calculation unit 36c (the logarithm of the amplitude ratio as the amplitude relative relationship or the logarithm of the output ratio). That is, log (VL1 / VL2) and log (VL3 / VL4) are calculated, and appropriate coefficient processing is performed to obtain an arithmetic output Sop.

  Various calculations in the amplitude voltage calculation unit 36b, the amplitude ratio calculation unit 36c, and the logarithmic conversion unit 36d can be implemented by a hardware configuration. However, as described above, the central calculation built in the receiver 3 or the display device 4 is possible. A processing device (CPU) can be used in combination. According to the CPU, the position control of the cursor 4p can be performed based on a computer program (software configuration).

  In the figure, the calculation output Sop of the logarithmic conversion unit 36d is output. However, the calculation result of the amplitude ratio calculation unit 36c can be used as the calculation output Sop.

<Embodiment 2>
A specific displacement detection and display mode on the display screen in the remote control system 1 shown in the first embodiment will be described as a second embodiment. In the present embodiment, a case will be described in which the transmitter 2 is moved (displaced, swung) only in the horizontal direction (first axial direction X) in order to facilitate understanding. Therefore, the movement in the vertical direction (second axial direction Y) will not be described, but can be applied similarly. For movement in both the horizontal and vertical directions, appropriate composition processing is performed based on the values obtained in each direction (amplitude ratio as an amplitude relative relationship, logarithm of an amplitude ratio as an amplitude relative relationship). By doing so, it becomes possible to detect movement in the two-dimensional direction (displacement detection, swing detection), and a description thereof will be omitted.

  FIG. 8 is an explanatory diagram showing an arrangement state of main parts of the remote control system according to the second embodiment of the present invention.

  The system 1 is the same as that shown in the first embodiment, and includes a transmitter 2 and a receiver 3 (light receiving unit 3p), and a state in which a cursor 4p is displayed on the display screen 4d of the display device 4 is a front view. Show. The display screen 4d defines an X axis in the horizontal direction corresponding to the first axial direction X (horizontal direction) of the transmitter 2, and corresponds to the second axial direction Y (vertical direction) of the transmitter 2 in the vertical direction. A Y axis is defined.

  The transmitter 2 is a plan view as seen from the upper side in the vertical direction in the use state as in the case of FIG. The transmitter 2 is disposed at a communication distance CL from the display device 4 (receiver 3, light receiving unit 3p). Here, the communication distance CL is about 2 meters. The transmitter 2 swings left and right around the origin Oax, and defines a tilt state from the central axis Axc facing the light receiving unit 3p as a swing angle θ. The receiver 3 is associated with the transmitter 2, and the state in which the transmitter 2 is swung rightward (transmitter 2xa) is + θ, and the state in which the transmitter 2 is swung left (transmitter 2xb) is −θ. The amplitude VL is obtained corresponding to the angle θ, and the arithmetic processing unit 36 performs arithmetic processing.

  FIG. 9 is a graph of measured values showing the relationship between the swing angle and the amplitude of the position detection output signal in the remote control system according to the second embodiment of the present invention.

  The horizontal axis represents the swing angle θ (degrees), and the vertical axis represents the amplitude VL (mV) of the position detection output signal Sp. For the amplitude VL1 of the first output signal Sp1, the amplitude VL2 of the second output signal Sp2, the amplitude VL3 of the third output signal Sp3, and the amplitude VL4 of the fourth output signal Sp4, the measured values are represented in correspondence with the swing angle θ. . The graph shows the average value of the measurement values (30 times of sampling described above).

  The amplitude VL1 corresponding to the first light emitting element LED1 disposed on the left side in the plan view (see FIG. 2A) gradually follows the change in the swing angle θ from the left (−θ) to the right (+ θ). It shows increasing characteristics, and shows a maximum value at about 25 to 35 degrees. That is, this angle indicates that the first light emitting element LED1 faces the light receiving portion 3p at this angle.

  Similarly, the amplitude VL2 corresponding to the second light emitting element LED2 arranged on the right side has a characteristic of gradually decreasing from the left (−θ) to the right (+ θ) following the change of the swing angle θ, and −25 The maximum value is shown at about -35 degrees. That is, this angle indicates that the second light emitting element LED2 faces the light receiving portion 3p at this angle.

  In addition, since the amplitude VL1 and the amplitude VL2 are arranged in contrast to the light receiving unit 3p when the swing angle θ is 0 degree, the amplitudes VL1 and VL2 basically match each other. That is, the amplitudes VL1 and VL2 show contrasting characteristics centering on the swing angle θ = 0 degrees.

  Unlike the first light emitting element LED1 and the second light emitting element LED2 arranged in the first axial direction X, the third light emitting element LED3 and the fourth light emitting element LED4 arranged in the second axial direction Y have a swing angle θ of 0. The change due to the swing angle θ is less than that of the first light-emitting element LED1 and the second light-emitting element LED2, and both have the same arrangement relationship (vertical symmetry) with respect to the swing angle θ. The amplitudes VL3 and VL4 are shown. That is, the ratio of the amplitude VL3 to the amplitude VL4 (amplitude VL3 / amplitude VL4) is almost 1 and does not change.

  In the present embodiment, when the swing angle θ is in the range of 25 degrees to 35 degrees in absolute value, the measured value is decreased as a whole, and the reliability as the signal of the swing angle θ is lost. Therefore, it is preferable to set the effective swing angle within a certain range. In this embodiment and the following embodiments, ± 25 degrees is set as an effective swing angle. That is, the cursor 4p is controlled by regarding that the displacement detection of the transmitter 2 is effective only for the value of the amplitude ratio (and the logarithm of the amplitude ratio) when the swing angle θ can be determined to be within the range of the effective swing angle. It is set as the structure to do.

  Within the range of the effective swing angle (± 25 degrees), the ratio of the amplitude VL1 to the amplitude VL2 (amplitude VL1 / amplitude VL2) changes greatly with respect to the change of the swing angle θ. Further, the amplitude ratio (VL1 / VL2) simply increases in the range of the effective swing angle (−25 degrees to +25 degrees).

  Therefore, the relationship between the swing angle θ and the amplitude ratio (VL1 / VL2) is measured in advance and stored in the storage means (not shown) of the receiver 3 to obtain the detected amplitude ratio (VL1 / VL2). The corresponding swing angle θ is specified (displacement of the transmitter 2 is detected). That is, the position of the cursor 4p can be controlled based on the detected displacement (swing angle θ). In this case, the amplitude ratio (VL1 / VL2) corresponds to the calculation output Sop (output of the amplitude ratio calculation unit 36c).

  For example, from the amplitude measurement value when the swing angle θ is 20 degrees, the amplitude ratio VL1 / VL2 = 4563 mV / 956 mV = 4.77. Accordingly, when the amplitude ratio is calculated to be 4.77, it can be detected that the swing angle θ is 20 degrees, and thus the cursor 4p can be moved to a position corresponding to 20 degrees.

  In addition, about an intermediate value, it can respond | correspond suitably by performing a more detailed measurement, or performing the arithmetic processing by the interpolation method (linear approximation) about the middle of a measured value.

  FIG. 10 is a graph showing the logarithm of the amplitude ratio of the position detection output signal in the first axis direction for the measurement values of FIG.

  The horizontal axis represents the swing angle θ (degrees), and the vertical axis represents the logarithm log (VL1 / VL2) of the amplitude ratio. Since the amplitude ratio in the first axis direction X is the object, the logarithm of the amplitude ratio is log (VL1 / VL2), and the curve at each swing angle θ is expressed as log (average value of VL1 / (Average value of VL2). Note that VL1max / VL2min (maximum value of VL1 / minimum value of VL2) is shown as a data range (triangle mark) above the curve, and VL1min / VL2max (minimum value of VL1 / maximum value of VL2) is below the curve. Shown as data range (diamonds).

  As described above, within the range of the effective swing angle (± 25 degrees), the amplitude ratio (VL1 / VL2) changes greatly with respect to the change of the swing angle θ and simply increases. It can also be seen that the logarithm (log (VL1 / VL2)) of the amplitude ratio (VL1 / VL2) exhibits characteristics that can be approximated to a straight line within the range of the effective swing angle. Note that control by linear approximation will be described separately in the third and fourth embodiments.

  Therefore, by measuring the relationship between the swing angle θ and the logarithm of the amplitude ratio (VL1 / VL2) in advance and storing it in the storage unit of the receiver 3, the logarithm of the detected amplitude ratio (log (VL1 / VL2) )) Is identified (the displacement of the transmitter 2 is detected). That is, the position of the cursor 4p can be controlled based on the detected displacement (swing angle θ). In this case, the logarithm log (VL1 / VL2) of the amplitude ratio (VL1 / VL2) corresponds to the calculation output Sop (output of the logarithmic conversion unit 36d).

  For example, the amplitude measurement value when the swing angle θ is 20 degrees is the amplitude ratio VL1 / VL2 = 4.77 as described above, and the logarithm of the amplitude ratio is log 4.77 = 0.679. Therefore, when the logarithm of the amplitude ratio is calculated as 0.679, it can be detected that the swing angle θ is 20 degrees, and thus the cursor 4p can be moved to a position corresponding to 20 degrees.

  FIG. 11 is a graph showing the logarithm of the amplitude ratio of the position detection output signal in the second axis direction for the measurement values of FIG.

  The horizontal axis represents the swing angle θ (degrees), and the vertical axis represents the logarithm log (VL3 / VL4) of the amplitude ratio. Since the amplitude ratio in the second axis direction Y is targeted, the logarithm of the amplitude ratio is log (VL3 / VL4), and the curve shows log (average value of VL3 / average value of VL4). is there. In addition, VL3max / VL4min (maximum value of VL3 / minimum value of VL4) is shown as a data range (diamond) on the upper side of the curve, and VL3min / VL4max (minimum value of VL3 / maximum value of VL4) is below the curve. Shown as data range (triangle mark).

  As described above, since the ratio of the amplitude VL3 to the amplitude VL4 (amplitude VL3 / amplitude VL4) is approximately 1 and does not change, the logarithm log of the amplitude ratio (VL3 / VL4) is approximately 0, and the first axis direction X It can be seen that there is no influence on the detection of.

  FIG. 12 is a chart for explaining a coordinate conversion mode in which the logarithm of the amplitude ratio of the position detection output signal corresponds to the position information of the cursor in the remote control system according to the second embodiment of the present invention.

  In the figure, the columns of swing angle θ (degree) and logarithm log (VL1 / VL2) of the amplitude ratio are numerical values corresponding to the graph of FIG. 10 and are experimentally obtained in advance. For example, when the swing angle θ is −25 degrees, log (VL1 / VL2) is −0.66, and when the swing angle θ is 0 degrees, log (VL1 / VL2) is 0 and the swing angle θ is +25 degrees. Then, log (VL1 / VL2) is +0.75. Other corresponding numerical values are as shown in the chart.

  Corresponding to the logarithm of the amplitude ratio corresponding to the swing angle θ, position information in the first axis direction X (X-axis position information: the position of the cursor 4p on the display screen 4d is specified and corresponds to the position coordinates of the cursor 4p. )), The relationship among the three parties (the swing angle θ, the logarithm (logarithm value) of the amplitude ratio, and the X-axis position information) is associated in advance. Although only the X-axis position information will be described, the Y-axis position information can be similarly set for the second axis direction Y.

  The X-axis position information can be obtained by subjecting the swing angle θ to appropriate coefficient processing so that the logarithm of the amplitude ratio corresponds to the position of the cursor 4p on the display screen 4d (coordinates of the cursor 4p). That is, the X-axis position information can be set (coordinate conversion) by setting an appropriate coordinate conversion constant k and multiplying it by the swing angle θ.

  The correspondence among the three of the swing angle θ, the logarithm of the amplitude ratio, and the X-axis position information is stored in the storage means as a comparison table, for example, and the X-axis position corresponding to the logarithm of the amplitude ratio detected as the calculation output Sop Information is obtained from the comparison table, and the cursor position of the cursor 4p can be controlled by the point control unit 40 in correspondence with the obtained X-axis position information.

  The values in the comparison table are preferably set to appropriate values so that various conditions are set to obtain a large number of data, and statistical processing is performed so that practical errors do not occur as much as possible.

  The calculation for obtaining the X-axis position information corresponding to the logarithm of the detected amplitude ratio (collation with the comparison table) may be performed by the calculation processing unit 36 or may be performed by the cursor control unit 40. In addition, storage means for storing the comparison table can be provided at an appropriate location of the receiver 3 such as the arithmetic processing unit 36 and the cursor control unit 40.

  When the logarithm of the amplitude value not found in the comparison table is output as the calculation output Sop in the comparison of the comparison table, the corresponding X-axis position information can be appropriately obtained by interpolation. For example, when the logarithm of the amplitude ratio output from the arithmetic processing unit 36 is 0.38, [(0.38−0.28) / (0.48−0.28)] (10k−5k) + 5k = X-axis position information can be obtained by interpolation using + 7.5k. The interpolation method can be similarly applied to other embodiments. It is also possible to prepare a detailed comparison table to such an extent that the interpolation method is unnecessary.

  By associating the swing angle θ, the logarithm of the amplitude ratio, and the X-axis position information, the X-axis position information with respect to the calculation output Sop (logarithm of the amplitude ratio) can be easily compared. The cursor position can be controlled with high accuracy. In addition, by making the amplitude relative relationship logarithm of the amplitude ratio, the correlation between the swing angle θ and the logarithm of the amplitude ratio can be a simple increase characteristic in which the absolute value is symmetric in both plus and minus directions. Thus, the X-axis position information can be easily and reliably compared with the logarithm of, and the cursor position can be easily controlled.

  In FIG. 12, the swing angle θ and the X-axis position information are associated with the logarithm of the amplitude ratio. However, the swing angle θ and the X-axis position information can be associated with the amplitude ratio. In this case, the X axis position information with respect to the calculation output Sop (amplitude ratio) can be easily matched by matching the swing angle θ, the amplitude ratio, and the X axis position information. The cursor position can be controlled with high accuracy.

  Note that the configuration of the arithmetic processing unit 36 can be simplified by using the amplitude ratio as the amplitude relative relationship, and the correlation between the swing angle θ and the amplitude ratio can be easily obtained. Information can be easily contrasted and the cursor position can be easily controlled.

  FIG. 13 is an explanatory diagram for explaining the relationship between the X-axis position information obtained in FIG. 12 and the cursor position.

  When the transmitter 2 is swung to the left and is in the state indicated by the transmitter 2xb, the swing angle θ corresponds to −25 degrees (the left effective swing angle), and the X-axis position information is −25 k as shown in FIG. It is. Accordingly, -25k as the X-axis position information is allocated as a position on the display screen 4d in correspondence with the left end, and the cursor 4pb is displayed at the left end.

  When the transmitter 2 is swung to the right and is in the state indicated by the transmitter 2xa, the swing angle θ corresponds to +25 degrees (right effective swing angle), and the X-axis position information is + 25k as shown in FIG. . Therefore, + 25k as the X-axis position information is allocated in correspondence with the right end as a position on the display screen 4d, and the cursor 4pa is displayed on the right end.

  When the transmitter 2 faces the receiver 3 (light receiving unit 3p) and is in the state indicated by the transmitter 2, the swing angle θ corresponds to 0 degree, and the X-axis position information is 0 as shown in FIG. It is. Therefore, 0 as the X-axis position information is made to correspond to the center (on the Y-axis including the origin O) as a position on the display screen 4d.

  The association between the X-axis position information and the position of the cursor 4p on the display screen 4d can be easily performed by reflecting the characteristics of the cursor control unit 40 in the coordinate conversion constant k. Further, in the present embodiment, the absolute value of the swing angle θ and the positional information of the cursor 4p on the display screen 4d (the absolute value of the position coordinates) correspond to each other equally by making the correspondence between ± 25k. This is a configuration that is allocated. Since the Y axis corresponding to the second axis direction Y can be controlled in the same manner, the description is omitted.

<Embodiment 3>
In the present embodiment, the displacement of the transmitter 2 is detected by further linearly approximating the logarithm of the amplitude ratio shown in the second embodiment. That is, the amplitude relative relationship is a linear approximation of the logarithm of the amplitude ratio.

  FIG. 14 shows the relationship between the swing angle and the logarithm of the amplitude ratio of the position detection output signal when linear approximation is applied to the logarithm of the amplitude value of the position detection output signal in the remote control system according to the third embodiment of the present invention. It is a graph to show.

  The data in the present embodiment is the same as in the second embodiment, and the horizontal axis is the swing angle θ (degrees) and the vertical axis is the logarithm log of the amplitude ratio (VL1 / VL2), as in FIG. . The system 1 (receiver 3) of the present embodiment regards the logarithm of the amplitude ratio as the approximate straight line AL within the range of the effective swing angle ± 25 degrees.

  Various methods for setting the approximate straight line AL are possible, but in the present embodiment, when the swing angle θ = 0 (degrees), log (VL1 / VL2) = 0 on the approximate straight line AL in accordance with the measured value. When the maximum value of the effective swing angle is +25 degrees, the measured value (log (VL1 / VL2) = 0.75) is smaller than the measured value (log (VL1 / VL2) when the minimum value of the effective swing angle is −25 degrees. = 0.66), and ± symmetrical in both directions (maximum and minimum absolute values are the same).

  That is, the approximate straight line AL has a log (VL1 / VL2) of −0.65 when the swing angle θ is −25 degrees, a log (VL1 / VL2) of 0 when the swing angle θ is 0 degrees, and a swing angle θ of +25 degrees. Log (VL1 / VL2) is a straight line passing 0.65. Therefore, when the logarithm of the amplitude ratio is −0.65, −0.26, 0.39, and 0.65, the swing angle θ is detected as −25 degrees, −10 degrees, +15 degrees, and +25 degrees, respectively. Become.

  For example, in the approximate straight line AL, the swing angle θ corresponding to log (VL1 / VL2) = 0.5 is 18 degrees. Therefore, when the logarithm of the detected amplitude ratio is calculated as 0.5, the swing angle θ is detected as 18 degrees. By using the linear approximation, the relationship between the swing angle θ measured and stored in advance and the logarithm of the amplitude ratio (VL1 / VL2) can be simplified and easily obtained.

  However, since it is a linear approximation, in the approximate straight line AL in the present embodiment, the detected swing angle θ shows a larger value (absolute value) than the actual swing angle θ. For example, the actual swing angle θ corresponding to the logarithm log (VL1 / VL2) = 0.5 of the detected amplitude ratio is 18 degrees when the swing angle θ described above is 18 degrees. That is, an angle larger than the actual swing angle θ is detected as the swing angle θ. Therefore, it can also be used as a coarse adjustment that may be low in accuracy. Note that the correspondence between the swing angle θ, the linear approximation logarithm, and the X-axis position information in the case of linear approximation can be stored in the storage unit as a comparison table in the same manner as in the second embodiment.

  As in the case of the second embodiment (FIG. 12), the X-axis position information is simply obtained by multiplying the swing angle (linear approximate swing angle θa) corresponding to the linear approximate logarithm obtained in FIG. 14 by the coordinate conversion constant k. The swing angle θ, the logarithm of the amplitude ratio, and the X-axis position information can be made to correspond to each other as a comparison table. For example, when the logarithm of the amplitude ratio as the calculation output Sop is 0.52, the corresponding linear approximate logarithm 0.52 corresponds to the linear approximate swing angle θa = + 20 degrees, so the X-axis position information is set to + 20k. It is also possible. In this case, some errors may occur as described above.

  FIG. 15 illustrates a coordinate conversion mode in which, when the logarithm of the amplitude ratio of the position detection output signal is linearly approximated by the remote control system according to the third embodiment of the present invention, the logarithm that is linearly approximated corresponds to the position information of the cursor. It is a chart.

  In the figure, the columns of swing angle θ (degree) and logarithm log (VL1 / VL2) of the amplitude ratio are numerical values corresponding to the graph of FIG. 10 and are experimentally obtained in advance. Therefore, as in FIG. 12, when the swing angle θ is −25 degrees, log (VL1 / VL2) is −0.66, and when the swing angle θ is 0 degrees, log (VL1 / VL2) is 0. When the swing angle θ is +25 degrees, log (VL1 / VL2) is +0.75. Other corresponding numerical values are as shown in the chart.

  The column of the linear approximate logarithm is a numerical value of the approximate straight line AL shown as a straight line in FIG. As described in FIG. 14, when the swing angle θ is −25 degrees, the linear approximation logarithm is −0.65, when the swing angle θ is 0 degrees, the linear approximation logarithm is 0, and when the swing angle θ is +25 degrees. The logarithmic approximate logarithm is +0.65. Other corresponding numerical values are as shown in the chart.

  Since the effective swing angle of the approximate straight line AL is ± 25 degrees and the logarithm value of the amplitude ratio is ± 0.65, the logarithm of the swing angle θ per degree (0.65 / 25) is 0.65 / 25. The linear approximation swing angle θa by linear approximation is calculated by dividing the logarithm of the amplitude ratio as an actual measurement value (log (VL1 / VL2)) by the logarithm per degree (0.65 / 25). X-axis position information is set (specified) in correspondence with the angle θa (conversion formula).

  For example, when the swing angle θ = + 15 degrees and log (VL1 / VL2 = + 0.60), the linear approximate swing angle θa is + 0.60 / (0.65 / 25) = + 23.08. The position information (X-axis position information) in the first axis direction X is + 23.08k multiplied by the conversion constant k.

  The X-axis position information as a result of linear approximation is, for example, −25.38k for a swing angle θ = −25 degrees, −19.23k for a swing angle θ = −15 degrees, and a swing angle θ = 0 degrees. 0 for the swing angle, 23.08 k for the swing angle θ = + 15 degrees, and +28.85 k for the swing angle θ + 25 degrees. That is, in the case of linear approximation, the measured value of the logarithm of the amplitude ratio is different from the linear approximation logarithm of the approximate line AL as described above, so the swing angle θ and the X-axis position information (position coordinates) of the cursor 4p are Not even.

  For example, −25.38k as the X-axis position information corresponding to the swing angle θ = −25 degrees is located about −25 (arbitrary length unit) on the left side of the screen center on the display screen 4d, and the swing angle θ = + 28.85k as the X-axis position information corresponding to +25 degrees is located about 29 (arbitrary length unit) on the right side from the screen center on the display screen 4d. That is, even if the swing angle θ is equal to the left and right, the position of the cursor 4p is not symmetrical between the plus side and the minus side.

  However, in the case of the approximate straight line AL, the cursor 4p can be swung, for example, larger than the actual value of the swing angle θ of the transmitter 2, so that it can be used as a rough adjustment.

<Embodiment 4>
In the second and third embodiments, the position information (X-axis position information) is made to correspond to the absolute position (position coordinates) of the cursor 4p on the display screen 4d in correspondence with the absolute value of the swing angle θ. In this embodiment, the position control of the cursor 4p is performed by controlling the position of the cursor 4p on the display screen 4d relative to the change (relative value) of the swing angle θ. Is configured to perform continuously, smoothly and quickly. That is, the position information of the cursor position is controlled as a change amount (movement amount) based on the change amount of the swing angle θ. Note that description of the same configurations as those of the second and third embodiments is omitted as appropriate.

  FIG. 16 is an explanatory diagram illustrating a coordinate conversion mode in which the position of the cursor is changed in accordance with the change in the swing angle in the remote control system according to the fourth embodiment of the present invention.

  When the cursor 4p immediately before the transmitter 2 is displaced is located at the relative origin (Or) of the immediately preceding relative coordinate axis (relative Xr axis, relative Yr axis), the transmitter 2 swings to the left from the central axis Axc, for example. When it is swung at θ = −5 degrees (when displaced to the position of the transmitter 2xb), the X-axis position information can be applied as −5k (see FIG. 12), so the X-axis is based on the cursor 4p. The movement can be controlled to the cursor 4pb at the coordinate position corresponding to the position information -5k.

  Similarly, when the transmitter 2 is swung to the right from the central axis Axc at a swing angle θ = + 5 degrees (when displaced to the position of the transmitter 2xa), the X-axis position information is + 5k (see FIG. 12). Therefore, the movement can be controlled to the cursor 4pa at the coordinate position corresponding to the X-axis position information + 5k with reference to the cursor 4p.

  When the transmitter 2 is directly opposed to the receiver 3 (light receiving unit 3p) and is in the state indicated by the transmitter 2 and is maintained as it is, the swing angle θ corresponds to 0 degree, and as shown in FIG. The axis position information is zero. Therefore, the position of the cursor 4p does not change, and the position immediately before (the relative origin Or) on the display screen 4d is maintained as it is.

  The relative coordinate axes (relative Xr axis, relative Yr axis) may be based on the position where the previous cursor 4p is present as the relative origin Or, and the amount of movement from the relative origin Or is set as a relative value (change). Since it suffices to correspond to certain X-axis position information, it can be controlled very easily.

  For ease of understanding, the change in the swing angle θ has been described centering on the swing angle θ = 0. However, the present invention is not limited to this, and the change from the swing angle θ = 10 degrees to the swing angle θ = 15 degrees is changed by +5 degrees. It can be applied to such cases. In other words, the change of the X-axis position information (15k-10k = + 5k) is applied, and the cursor 4p is displaced corresponding to the change of the swing angle θ from the immediately preceding relative coordinate (corresponding to the change of the swing angle θ = + 5 degrees). Change corresponding to the X-axis position information, that is, movement corresponding to + 5k).

  The relative value (change) of the swing angle θ can be detected by periodically sampling at an appropriate timing. For example, in synchronization with the light emission period Tc, a difference between the swing angle θ at the time of the current sampling with respect to the swing angle θ at the time of the previous sampling is obtained, and the amount of movement is calculated based on the position information corresponding to the difference. It can be executed by installing the program in advance. The change amount of the X-axis position information can be obtained by appropriately calculating the X-axis position information corresponding to the swing angle θ (change amount) corresponding to the comparison table.

  In the present embodiment, since the change in the swing angle θ is converted into the change in the position of the cursor 4p, the present invention can be applied to fine adjustment of the position of the cursor 4p. In addition, switching between processing modes (absolute mode in which absolute values are applied or relative modes in which relative values are applied for swing angle and position information) with the case of the second and third embodiments is switched to the arithmetic processing unit 36. Alternatively, it can be easily performed by appropriately controlling the cursor control unit 40 or the like.

  Further, it is possible to adopt a mode in which rough adjustment and fine adjustment can be performed by using at least two types of position information (X-axis position information) corresponding to the swing angle θ (see Embodiment 5). For example, when the change amount of the swing angle θ is +5 degrees, the position information is described as + 5k. However, when the change amount of the swing angle θ is +5 degrees, the position information is made to correspond to + 1k and fine adjustment is performed. It is possible.

<Embodiment 5>
In the present embodiment, the resolution of cursor position control can be changed. That is, it is possible to perform coarse adjustment for moving the cursor largely with respect to the same swing angle θ and fine adjustment for moving the cursor small.

  FIG. 17 schematically shows a case where the remote control system according to the fifth embodiment of the present invention enables coarse adjustment and fine adjustment with two types of cursor movement amounts with respect to the same swing angle of the transmitter. (A) is an explanatory diagram showing the movement status of the cursor displayed on the display screen, and (B) is a transmitter swing angle corresponding to the cursor movement and the cursor movement amount (position information). It is a graph which shows the relationship between these.

  The cursor 4p shown on the display screen 4d in FIG. 4A is the cursor 4pf at the first position, and is largely controlled by movement control (coarse adjustment corresponding to X-axis position information + 25k) in the first stage position control. Is moved to the position indicated by the cursor 4ps near the cursor 4pt.

  Thereafter, in the second stage, the cursor 4ps is controlled to be small (fine adjustment corresponding to X-axis position information + 5k) and moved to the target position indicated by the cursor 4pt. In addition, although the case where it controls about the 1st axial direction X similarly to Embodiment 2 thru | or Embodiment 4 is demonstrated, it is applicable similarly to the 2nd axial direction Y.

  That is, in the first stage (movement from the cursor 4pf to the cursor 4ps), when the movement control of the cursor 4p is performed by the swing angle θ (for example, the change amount +25 degrees) of the transmitter 2, the X-axis movement amount is set to + 25k (k : Coordinate conversion constant).

  Further, when the movement control of the cursor 4p is performed in the second stage (movement from the cursor 4ps to the cursor 4pt) with the same swing angle θ (for example, +25 degrees of change) as the first stage, the X-axis movement amount is + 5k. As (k: coordinate conversion constant), the movement is controlled to be smaller than in the first stage. Compared to the first stage, since the amount of movement is small with respect to the same change in the swing angle θ, it is possible to perform more accurate control with respect to the precision in the first stage.

  X-axis position information (position information for coarse adjustment) that moves the cursor 4p greatly with respect to the same swing angle θ (change) of the transmitter 2 and X-axis position information (position information for fine adjustment) that moves the cursor 4p slightly. As a configuration for changing the resolution of the position control of the cursor 4p, it is possible to improve accuracy and operability. Since the coarse adjustment is performed first and then the fine adjustment is performed thereafter, smooth operation is possible.

  For example, when the effective swing angle θ of the transmitter 2 is set to ± 25 degrees and the position of the cursor 4p is controlled in correspondence with the left and right ends of the display screen 4d as in the coarse adjustment in the present embodiment, the swing angle θ = ± The X-axis position information corresponding to 25 degrees is ± 25k. In this case, in order to control the position of the cursor 4p at 1/50 pitch (corresponding to the X-axis position information 1k) by dividing the left and right ends of the display screen 4d by 50, the swing angle θ of the transmitter 2 is set to 1 degree. It is necessary to operate and control in units. However, controlling the swing angle θ in units of 1 degree is a very detailed operation, giving a great stress to the operator, and actually making the position control extremely difficult.

  On the other hand, as in the present embodiment, the control of the position of the cursor 4p has a two-stage configuration, and is initially adjusted by applying large X-axis position information (first X-axis position information; see FIG. 18) as coarse adjustment. Then, if coarse position adjustment is performed and fine position adjustment is performed by applying small position information (second X-axis position information, see FIG. 18), highly accurate position control can be performed very easily and smoothly. .

  For example, after switching to fine adjustment, the X-axis position information (second X-axis position information) corresponding to the effective swing angle θ = ± 25 degrees is controlled as ± 5k. That is, on the display screen 4d, control is performed with an accuracy five times that in the case of coarse adjustment. In this case, to control the position of the cursor 4p at 1/50 pitch (corresponding to X-axis position information 1k) by dividing the left and right screens into 50, the swing angle θ of the transmitter 2 is operated and controlled in units of 5 degrees. It ’s fine. That is, it is possible to ensure five times the resolution (high resolution) and five times the operability, thereby providing the transmitter 2 that is extremely easy for the operator to operate.

  It should be noted that the switching of the X-axis position information of the cursor corresponding to the same swing angle θ is not limited to two types (first position information and second position information), and is at least relatively coarse adjustment and fine adjustment. Two types are sufficient. Further, the position can be controlled with higher accuracy by increasing the number of switching stages.

  FIG. 19 shows an embodiment of resolution switching means for switching the X-axis position information of the cursor corresponding to the same swing angle θ. By appropriately driving the resolution switching means, it is possible to switch between two types of position information.

  FIG. 18 is a table for explaining the setting status of the X-axis position information as two types for coarse adjustment and fine adjustment for the swing angle of the transmitter in the resolution change control of FIG.

  Corresponding to the same swing angle θ (change), the X-axis movement amount (X-axis position information) is changed to the first X-axis position information (position information for coarse adjustment) and the second X-axis position information (position for fine adjustment). Information). As described with reference to FIG. 17, the first X-axis position information corresponds to the first stage (coarse adjustment) and the second X-axis position information corresponds to the second stage (fine adjustment). Since the relative ratio between the first X-axis position information and the second X-axis position information is 5, the resolution of the X-axis position information with respect to the swing angle θ can be changed, and as described above, the accuracy is five times that of the coarse adjustment. With this, fine adjustment can be performed.

  Note that by making the correspondence between the swing angle θ and the X-axis position information within a range of the effective swing angle (± 25 degrees) as a comparison table, coarse adjustment and fine adjustment can be performed very easily.

  By making the first X-axis position information and the second X-axis position information correspond to the swing angle θ (change) and making a comparison table, the X-axis position information with respect to the calculation output Sop can be easily compared. The cursor position can be controlled easily and with high accuracy.

  FIG. 19 is a schematic diagram for explaining a schematic configuration of the resolution switching means in the resolution change control of FIG. 17, (A) is an external view of the transmitter, and (B) is a grip of the resolution switching means with a strong force. (C) is a schematic diagram showing a state in which the resolution switching means is gripped with a light force.

  In the present embodiment, a pressure sensor 21 is provided on the side surface of the transmitter 2 as a resolution switching means in the grip portion of the transmitter 2. The pressure sensor 21 is strongly grasped by the operator's hand Hd to correspond to the first stage (coarse adjustment) of the movement control of the cursor 4p, and the pressure sensor 21 is lightly grasped by the operator's hand Hd. This corresponds to the second stage (fine adjustment) of the 4p movement control. The pressure sensor 21 only needs to be able to detect a gripping force, and can be specifically configured with a gripping force sensor or the like.

  That is, when the pressure sensor 21 detects a strong pressure Fs, the first X-axis position information is selected by recognizing that the control is the first step, and when the pressure sensor 21 detects a weak pressure Fw. The second X-axis position information is selected by recognizing that the control is in the second stage. Since the gripping in the second stage is made to correspond to the weak pressure Fw, a strong gripping force is not necessary at the time of fine adjustment, so the position of the transmitter 2 can be controlled finely and stably, and the cursor 4p can be accurately controlled. It becomes possible to control stably.

  Although the case where the pressure sensor 21 is used as the resolution switching unit has been described, an appropriate switching unit such as a button or a capacitive touch pad can be used as the resolution switching unit.

  Further, resolution switching (switching between position information for coarse adjustment and position information for fine adjustment) is performed by detecting a position detection light signal LSp emitted from the position detection light-emitting unit 2 when the resolution switching means is operated. This can be done by changing the light emission pattern of the optical signal LS composed of the first optical signal LS1 to the fourth optical signal LS4) and the detection start optical signal (LSs).

  For example, it is possible to install in advance a program for switching the position information as the coarse adjustment mode when there is one detection start light signal LSs and as the fine adjustment mode when two detection start light signals LSs are consecutive. It is. It is also possible to change between coarse adjustment and fine adjustment by changing the light emission pulse width Ts of the position detection optical signal LSp (first optical signal LS1 to fourth optical signal LS4) to, for example, double. is there.

<Embodiment 6>
FIG. 20 is a schematic diagram schematically showing an operation situation when coarse adjustment and fine adjustment are performed in the remote control system according to the sixth embodiment of the present invention. FIG. 20 (A) shows the cursor displayed on the display screen. Explanatory drawing showing the movement situation, (B) is the operating state of the transmitter in the coarse adjustment indicated by arrow B in (A), (C) is the transmitter in the fine adjustment indicated by arrow C in (A). Indicates the operation status.

  The fifth embodiment performs coarse adjustment and fine adjustment by applying at least two types of cursor position information to the same swing angle θ of the transmitter 2 for controlling the cursor position. That is, fine adjustment is also performed by the swing angle θ.

  In the present embodiment, as in the fifth embodiment, when the position of the cursor 4p is controlled, coarse adjustment and fine adjustment are performed. However, the fine adjustment is different in that the fine adjustment substitute signal generating means is used.

  The cursor 4p shown on the display screen 4d in FIG. 4A is the cursor 4pf at the initial position, and is moved largely (coarsely adjusted) by the first-stage position control and is near the cursor 4pt which is the target position. Move to the position indicated by 4 ps as indicated by arrow B. The coarse adjustment in the present embodiment is configured to be performed by the swing angle θ of the transmitter 2 (see the first to fifth embodiments), as shown in FIG.

  Thereafter, in the second stage, the cursor 4ps is moved and controlled (finely adjusted) by driving the fine adjustment alternative signal generating means (not shown) with the cross key 22, and the cursor 4ps is moved to the target position indicated by the cursor 4pt. Move like arrow C.

  The fine adjustment is performed by a fine adjustment optical code signal as position information (position information signal) from the fine adjustment substitute signal generating means mounted on the transmitter 2. That is, the fine adjustment optical code signal as a position information signal for defining (controlling) the position where the cursor 4p (4 ps → 4 pt) moves is transmitted from the fine adjustment substitute signal generating means built in the transmitter 2 to the receiver 3. The cursor control unit 40 finely adjusts the position of the cursor 4p (4 ps → 4 pt) based on the fine adjustment optical code signal (position information) received (received) by the receiver 3.

  The light emitting element that emits the optical code signal for fine adjustment may be a dedicated light emitting element, but the light emitting elements used in the other embodiments (start signal light emitting element LEDs, first light emitting element LED1 to fourth light emitting element). It is also possible to divert the element LED4).

  In the present embodiment, since fine adjustment is performed based on the optical code signal for fine adjustment, it is not affected by the swing angle θ of the transmitter 2, so that the position of the cursor 4p can be finely adjusted more accurately and stably. Can be performed. Further, since the fine adjustment substitute signal generating means is configured to be driven and controlled by the cross key 22, fine adjustment with good operability can be performed.

  FIG. 21 is a schematic diagram schematically showing an operation situation when performing rough adjustment and fine adjustment in the remote control system according to the sixth embodiment of the present invention, as in FIG. 20, and (A) is a display screen. (B) is the operation state of the transmitter in the coarse adjustment indicated by the arrow B in (A), (C) is the minute indicated by the arrow C in (A). Indicates the operating state of the transmitter during adjustment.

  Since the basic configuration is the same as in FIG. 20, a detailed description is omitted. In FIG. 21, the fine-adjustment substitute signal generation means is configured to be driven and controlled by the capacitive touch pad 23. Therefore, it is possible to achieve the same operational effects as in the case of FIG.

  20 and 21, the coarse adjustment function is disabled when the fine adjustment substitute signal generating means is driven and controlled. With this configuration, stable fine adjustment can be performed without being affected by the swing angle θ of the transmitter 2.

<Embodiment 7>
FIG. 22 is a flowchart showing a first flow example related to the on / off operation of the light emitting element control unit and the cursor position determination in the remote control system according to the first to fifth embodiments.

Step S1:
The light emission control button 2sw is pressed.

Step S2:
In response to pressing of the light emission control button 2sw, the light emitting elements LED (the first light emitting element LED1 to the fourth light emitting element LED4) emit the position detection light signal LSp.

Step S3:
It is determined whether or not the light emission control button 2sw is continuously pressed. That is, it is determined whether or not the light emission control button 2sw is depressurized. When the pressing is continued (step S3: NO), the process returns to step S2 and continues to emit the position detection light signal LSp. When the pressure is released (step S3: YES), the process proceeds to step S4.

Step S4:
In response to the depressurization of the light emission control button 2sw, the light emission of the position detection light signal LSp is stopped.

Step S5:
When the emission of the position detection light signal LSp is stopped, the position detection output signal Sp is not detected, and it is determined whether or not this state continues for a predetermined time. That is, it is determined whether or not a predetermined time has elapsed in the non-detected state of the position detection output signal Sp. If the predetermined time has not elapsed (step S5: NO), the time counting is continued. If the predetermined time has elapsed (step S5: YES), the process proceeds to step S6.

Step S6:
It is determined that the position control of the cursor 4p by the swing angle θ has been completed, and the position of the cursor 4p is determined.

  The flow of steps S1 to S6 described above includes a predetermined light emission control button 2sw that matches the flow, and a flow program is installed in advance by applying the microcomputer provided in the transmitter 2 and receiver 3 of the system 1. It is possible to execute appropriately.

  That is, the remote control system 1 according to the present embodiment is applied to the remote control system 1 according to the first to fifth embodiments. Further, a light emission control button 2sw for controlling the on / off operation of the light emitting element control unit 2dc is provided. When the light emission control button 2sw is pressed, the position detection light signal LSp is emitted, and the light emission control button 2sw is depressurized. In some cases, the position detection light signal LSp is stopped from emitting, and the position of the cursor 4p is determined when the non-detection state of the position detection output signal Sp continues for a predetermined time. Therefore, the cursor position can be quickly and smoothly controlled.

  FIG. 23 is a flowchart showing a second flow example relating to the on / off operation of the light emitting element control unit and the cursor position determination in the remote control system according to the first to fifth embodiments.

Step S11:
The light emission control button 2sw is pressed.

Step S12:
In response to pressing of the light emission control button 2sw, it is determined whether or not the position detection light signal LSp by the light emitting element LED (the first light emitting element LED1 to the fourth light emitting element LED4) is emitting light. When the position detection light signal LSp is emitted (step S12: YES), the process proceeds to step S13. When the position detection light signal LSp is not emitted (step S12: NO), the process proceeds to step S14.

Step S13:
Since the light emission control button 2sw is pressed while the position detection light signal LSp is emitted, the emission of the position detection light signal LSp is stopped.

Step S14:
Since the light emission control button 2sw is pressed while the position detection light signal LSp is not emitted, the position detection light signal LSp is emitted, and the process returns to the step S11.

Step S15:
When the emission of the position detection light signal LSp is stopped, the position detection output signal Sp is not detected, and it is determined whether or not this state continues for a predetermined time. That is, it is determined whether or not a predetermined time has elapsed in the non-detected state of the position detection output signal Sp. If the predetermined time has not elapsed (step S15: NO), the time counting is continued. If the predetermined time has elapsed (step S15: YES), the process proceeds to step S16.

Step S16:
It is determined that the position control of the cursor 4p by the swing angle θ has been completed, and the position of the cursor 4p is determined.

  The flow from step S11 to step S16 includes a predetermined light emission control button 2sw that matches the flow and applies a microcomputer provided in the transmitter 2 and the receiver 3 of the system 1 to install a flow program in advance. It is possible to execute appropriately.

  That is, the remote control system 1 according to the present embodiment is applied to the remote control system 1 according to the first to fifth embodiments. Further, a light emission control button 2sw for controlling the on / off operation of the light emitting element control unit 2dc is provided, and each time the light emission control button 2sw is pressed, the light emission of the position detection light signal LSp and the light emission stop are switched, and the position detection output signal Sp is turned off. If the detection state continues for a predetermined time, the position of the cursor 4p is determined. Therefore, the cursor position can be quickly and smoothly controlled.

<Eighth embodiment>
FIG. 24 is a flowchart showing a first flow example related to the on / off operation of the light emitting element control unit and the fine adjustment alternative signal generating means in the remote control system according to the sixth embodiment.

Step S21:
The light emission control button 2sw is pressed.

Step S22:
In response to pressing of the light emission control button 2sw, the light emitting elements LED (the first light emitting element LED1 to the fourth light emitting element LED4) emit the position detection light signal LSp.

Step S23:
It is determined whether or not the light emission control button 2sw is continuously pressed. That is, it is determined whether or not the light emission control button 2sw is depressurized. When the pressing is continued (step S23: NO), the process returns to step S22 and the emission of the position detection light signal LSp is continued. If the pressure has been released (step S23: YES), the process proceeds to step S24.

Step S24:
In response to the depressurization of the light emission control button 2sw, the light emission of the position detection light signal LSp is stopped.

Step S25:
When the emission of the position detection light signal LSp is stopped, the position detection output signal Sp is not detected, and it is determined whether or not this state continues for a predetermined time. That is, it is determined whether or not a predetermined time has elapsed in the non-detected state of the position detection output signal Sp. If the predetermined time has not elapsed (step S25: NO), the time counting is continued. If the predetermined time has elapsed (step S25: YES), the process proceeds to step S26.

Step S26:
Fine adjustment alternative signal generation means (for example, driven and controlled by the cross key 22 and the electrostatic capacitance type touch pad 23) is validated. At this time, the control based on the swing angle θ is invalid.

  The flow from step S21 to step S26 described above includes a predetermined light emission control button 2sw adapted to the flow, and a flow program is installed in advance by applying the microcomputer provided in the transmitter 2 and the receiver 3 of the system 1. It is possible to execute appropriately.

  That is, the remote control system 1 according to the present embodiment is applied to the remote control system according to the sixth embodiment. Further, a light emission control button 2sw for controlling the on / off operation of the light emitting element control unit 2dc is provided. When the light emission control button 2sw is pressed, the position detection light signal LSp is emitted, and the light emission control button 2sw is depressurized. In some cases, the light emission of the position detection light signal LSp is stopped, and when the non-detection state of the position detection output signal Sp continues for a predetermined time, the fine adjustment alternative signal generating means is enabled. Therefore, the cursor position can be controlled quickly, smoothly and with high accuracy.

  FIG. 25 is a flowchart showing a second example of the flow relating to the on / off operation of the light emitting element control unit and the fine adjustment alternative signal generating means in the remote control system according to the sixth embodiment.

Step S31:
The light emission control button 2sw is pressed.

Step S32:
In response to pressing of the light emission control button 2sw, it is determined whether or not the position detection light signal LSp by the light emitting element LED (the first light emitting element LED1 to the fourth light emitting element LED4) is emitting light. When the position detection light signal LSp is emitted (step S32: YES), the process proceeds to step S33. If the position detection light signal LSp is not emitted (step S32: NO), the process proceeds to step S34.

Step S33:
Since the light emission control button 2sw is pressed while the position detection light signal LSp is emitted, the emission of the position detection light signal LSp is stopped.

Step S34:
Since the light emission control button 2sw is pressed in a state where the position detection light signal LSp is not emitted, the position detection light signal LSp is emitted, and the process returns to the step S31.

Step S35:
When the emission of the position detection light signal LSp is stopped, the position detection output signal Sp is not detected, and it is determined whether or not this state continues for a predetermined time. That is, it is determined whether or not a predetermined time has elapsed in the non-detected state of the position detection output signal Sp. If the predetermined time has not elapsed (step S35: NO), the time counting is continued. If the predetermined time has elapsed (step S35: YES), the process proceeds to step S16.

Step S36:
Fine adjustment alternative signal generation means (for example, driven and controlled by the cross key 22 and the electrostatic capacitance type touch pad 23) is validated. At this time, the control based on the swing angle θ is invalid.

  The flow from step S31 to step S36 described above includes a predetermined light emission control button 2sw that matches the flow and applies a microcomputer provided in the transmitter 2 and receiver 3 of the system 1 to install a flow program in advance. It is possible to execute appropriately.

  That is, the remote control system 1 according to the present embodiment is applied to the remote control system 1 according to the sixth embodiment. Further, a light emission control button 2sw for controlling the on / off operation of the light emitting element control unit 2dc is provided, and each time the light emission control button 2sw is pressed, the light emission of the position detection light signal LSp and the light emission stop are switched, and the position detection output signal Sp is turned off. When the detection state continues for a predetermined time, the fine adjustment alternative signal generating means is enabled. Therefore, the cursor position can be controlled quickly, smoothly and with high accuracy.

<Embodiment 9>
The present embodiment relates to a modification of a light emission control button that performs light emission control of the light emitting element LED. A modification of the light emission control button 2sw will be described with reference to FIGS.

  In the case of the push button type light emission control button 2sw, when the button is pushed in (pressed), the transmitter 2 may shake and the swing angle θ may be displaced in an unintended direction. In the present embodiment, it is possible to prevent such a shake of the transmitter 2, and by preventing the shake of the transmitter 2, a stable operation, detection of the swing angle θ, and the like become possible.

  FIG. 26 is a plan view conceptually showing a state in which a spring-type slide switch is applied as the light emission control button.

  The spring-type slide switch 24a is arranged on the upper plane of the transmitter 2. For example, when the hand slides in the direction of the arrow A with the hand Hd (thumb), the spring-type slide switch 24a is turned on. It can be made to correspond to an OFF state from returning to the position. When in the off state, it is possible to correspond to the state in which the control of the cursor 4p by the swing angle θ is finished.

  27A and 27B are explanatory views conceptually showing a state in which a touch switch is applied as the light emission control button, where FIG. 27A is a plan view and FIG. 27B is a side view.

  The touch-type switch 24b is arranged on the upper plane of the transmitter 2. For example, when the touch switch 24b is touched in the arrow B direction with the hand Hd (thumb), the touch switch 24b is turned on, and the hand Hd is released in the arrow C direction. It can correspond to the off state. When in the off state, it is possible to correspond to the state in which the control of the cursor 4p by the swing angle θ is finished. It is also possible to adopt a configuration in which the on / off state is switched in response to repeated touches.

  FIG. 28 is an explanatory diagram conceptually showing a state where a pressure sensor is applied as a light emission control button, (A) is a plan view, (B) is a conceptual diagram showing a state of being gripped with a weak force, and (C) is a diagram. It is a conceptual diagram which shows the state hold | gripped with strong force.

  A pressure sensor 24c is provided on the side surface of the transmitter 2 that can detect the pressure when the transmitter 2 is gripped (A in FIG. 1). In a weakly gripped state (FIG. B), the weak pressure Fw is detected to be in the first state, and in a strong grip state (FIG. A), the strong pressure Fs is detected to be in the second state. The pressure sensor 24c is preferably arranged so as to correspond to the position of the fingertip and configured to detect the pressure of the fingertip.

  The operation can be switched by associating the first state and the second state appropriately with the cursor control operation. For example, it is possible to control the position of the cursor 4p in accordance with the swing angle θ in the first state and to determine the position of the cursor 4p in the second state.

  FIG. 29 is an explanatory diagram conceptually showing a state in which a wire switch is applied as a light emission control button.

  The wire type switch 24d is connected to the transmitter 2 via a conductive wire 24e so that it can be arranged at a position away from the transmitter 2. By pressing the button of the wire type switch 24d, it becomes possible to act in the same manner as the light emission control button 2sw. Since on / off control is performed at a position away from the transmitter 2, there is no influence on the swing angle θ of the transmitter 2, so that accurate control by the swing angle θ is possible.

  FIG. 30 is an explanatory diagram conceptually showing a state in which the shape of the transmitter is a pistol type and the trigger of the pistol is applied as a light emission control button.

  By pressing (pulling) the trigger 24f of the pistol-type transmitter 2, it becomes possible to act similarly to the light emission control button 2sw.

<Embodiment 10>
In the present embodiment, other examples are shown as the tenth embodiment.

  FIG. 31 is a perspective view showing a remote control transmitter which is attached to a support base and controls a cursor.

  A support base 51 is formed on the upper surface of the horizontal base 50 serving as a reference base, and the transmitter 2 is rotatably attached to the tip of the support base 51. Therefore, the transmitter 2 can be freely displaced (swinged) with respect to the first axial direction X (corresponding to the horizontal direction) and the second axial direction Y (corresponding to the vertical direction) with the tip of the support base 51 as the origin. It becomes possible. Since the transmitter 2 placed on the support base 51 can strictly fix the origin when swinging, the position of the cursor 4p can be controlled more accurately by the swing angle θ.

  FIG. 32 is an explanatory diagram showing a conceptual diagram of a remote control transmitter provided with command buttons.

  The transmitter 2 includes a command button 2rc of a general normal infrared remote controller in addition to the light emission control button 2sw. That is, the transmitter 2 can be used as a general infrared remote controller.

  The command button 2rc is configured to control light emission of a command optical code signal (not shown). Note that the command button 2rc does not necessarily have the shape of a button, and may be a switch (interface) of another form such as a touch switch.

  The transmitter 2 has the same basic configuration as that of the first to ninth embodiments, and the light emitting element LED includes a start signal light emitting element LEDs, a first light emitting element LED1, a second light emitting element LED2, The three light emitting elements LED3 and the fourth light emitting element LED4 are provided at the tip 2t (in the figure, they are simply arranged side by side for the sake of simplicity, but the actual arrangement is the same as in the first to ninth embodiments. That's right.)

  In the present embodiment (FIG. 32), when the command optical code signal is controlled to be emitted by the command button 2rc, the start signal light emitting element LEDs as the light emitting element LED, the first light emitting element LED1 to the fourth light emitting element. A command optical code signal is emitted using at least one of the LEDs 4.

  Since the light emitting elements LED are used redundantly for different functions, it is possible to prevent an increase in the number of light emitting elements LED due to the multi-function of the transmitter 2, and it is possible to reduce the number of light emitting elements LED.

  FIG. 33 is an explanatory diagram conceptually showing a remote control system that includes a distance measuring means and controls a cursor three-dimensionally. FIG. 34 is a waveform diagram for explaining the situation of the magnitude of the amplitude detected in FIG. 33, (A) is a waveform diagram when the communication distance is short, and (B) is a waveform diagram when the communication distance is long. is there.

  The system 1 according to the present embodiment (FIG. 33) includes a built-in distance measuring means (not shown) that detects a communication distance CL between the transmitter 2 and the display device 4 (receiver 3, light receiving unit 3p). ing. The distance measuring means is generally provided on the receiver 3 side, but may be provided on the transmitter 2 side. For example, the communication distance CL is detected (measured or estimated) by making the transmitter 2 and the receiver 3 face each other and comparing the detected value of the amplitude VL with a reference value set in advance. Is possible.

  For example, when the communication distance CL is short (when the transmitter 2 is arranged on the Aa side of the arrow A), the amplitude VL becomes a large amplitude VL1a, VL2a, VL3a, VL4a as a whole (FIG. 34A). . When the communication distance CL is long (when the transmitter 2 is arranged on the Ab side of the arrow A), the amplitude VL becomes a small amplitude VL1b, VL2b, VL3b, VL4b as a whole (FIG. 34B). .

  Therefore, the communication distance CL can be recognized by adopting a configuration in which the value of the amplitude VL (relative light reception amount) is detected in association with the communication distance CL. It is possible to perform accurate measurement by setting the distance detection mode and performing measurement.

  In the present embodiment (FIG. 33), the position of the cursor 4p can be controlled three-dimensionally based on the communication distance CL and the swing angle θ.

  Further, it is possible to adjust (change) the range of the effective swing angle θ and adjust (change) position information corresponding to the swing angle θ based on the communication distance CL.

BRIEF DESCRIPTION OF THE DRAWINGS It is a conceptual diagram which shows the principal part outline of the display apparatus to which the remote control transmitter, the remote control receiver, and the remote control system which comprise the remote control system based on this invention were applied, (A) transmits a remote control signal. The position state of the cursor previously displayed on the display screen of the display device is shown, and (B) shows the position state of the cursor displayed on the display screen of the display device after the remote control signal is transmitted. It is explanatory drawing which shows the external appearance outline | summary of the remote control transmitter which concerns on Embodiment 1 of this invention, (A) is the top (upper surface) figure seen from the upper side of the perpendicular direction in use condition, (B) These are the front views seen from the arrow B direction of (A). It is explanatory drawing which shows schematic structure of the position detection light emission part of the remote control transmitter which concerns on Embodiment 1 of this invention, (A) is a schematic circuit diagram of a position detection light emission part, (B) is light emission from each light emitting element. It is a wave form diagram which shows the light emission timing of the optical signal to be performed. It is a circuit block diagram explaining the schematic circuit configuration and cursor control part of the remote control receiver which concerns on Embodiment 1 of this invention. FIG. 5 is a waveform diagram illustrating waveforms of an optical signal emitted from the position detection light emitting unit illustrated in FIG. 3, a position detection reception signal and a position detection output signal received and detected by the receiver illustrated in FIG. 4, and FIG. (B) is a position detection reception signal, and (C) is a position detection output signal. FIG. 5 is a circuit diagram showing an embodiment of the output detection unit shown in FIG. 4. FIG. 5 is a schematic block diagram illustrating a schematic configuration block of an arithmetic processing unit illustrated in FIG. 4. It is explanatory drawing which shows the arrangement | positioning condition of the principal part of the remote control system which concerns on Embodiment 2 of this invention. It is a graph of the measured value which shows the relationship between the swing angle in the remote control system which concerns on Embodiment 2 of this invention, and the amplitude of a position detection output signal. 10 is a graph representing the amplitude ratio of the position detection output signal in the first axis direction in logarithm with respect to the measurement value of FIG. 9. 10 is a graph representing the amplitude ratio of the position detection output signal in the second axis direction as a logarithm for the measurement value of FIG. 9. It is a table | surface explaining the coordinate conversion aspect which makes the logarithm of the amplitude ratio of a position detection output signal correspond to the positional information on a cursor in the remote control system which concerns on Embodiment 2 of this invention. It is explanatory drawing explaining the relationship between the X-axis position information calculated | required in FIG. 12, and the position of a cursor. It is a graph which shows the relationship between the swing angle at the time of applying a linear approximation to the logarithm of the amplitude value of a position detection output signal in the remote control system which concerns on Embodiment 3 of this invention, and the logarithm of the amplitude ratio of a position detection output signal. . It is a graph explaining the coordinate conversion aspect which makes the logarithm which carried out the linear approximation correspond to the positional information on a cursor, when carrying out the linear approximation of the logarithm of the amplitude ratio of a position detection output signal with the remote control system which concerns on Embodiment 3 of this invention. It is explanatory drawing explaining the coordinate conversion aspect which changes the position of a cursor corresponding to the variation | change_quantity of a swing angle with the remote control system which concerns on Embodiment 4 of this invention. Schematic for schematically explaining the case where the remote control system according to the fifth embodiment of the present invention enables coarse adjustment and fine adjustment with two types of cursor movement amounts for the same swing angle of the transmitter. FIG. 4A is an explanatory diagram showing a movement state of a cursor displayed on a display screen, and FIG. 4B is a relationship between a swing angle of a transmitter corresponding to the movement of the cursor and a movement amount (position information) of the cursor. It is a chart which shows. FIG. 18 is a chart for explaining the setting status of X-axis position information as two types for coarse adjustment and fine adjustment for the swing angle of the transmitter in the resolution change control of FIG. 17. FIG. FIG. 18 is a schematic diagram illustrating a schematic configuration of a resolution switching unit in resolution change control in FIG. 17, (A) is an external view of a transmitter, and (B) is a schematic diagram illustrating a state in which the resolution switching unit is gripped with a strong force. FIG. 4C is a schematic diagram showing a state in which the resolution switching means is gripped with a light force. It is a schematic diagram which shows typically the operation condition at the time of performing rough adjustment and fine adjustment with the remote control system which concerns on Embodiment 6 of this invention, (A) shows the movement condition of the cursor displayed on the display screen. Explanatory drawing, (B) shows the operating state of the transmitter in the coarse adjustment indicated by arrow B in (A), and (C) shows the operating state of the transmitter in the fine adjustment indicated by arrow C in (A). . FIG. 21 is a schematic diagram schematically showing an operation situation when performing coarse adjustment and fine adjustment in the remote control system according to the sixth embodiment of the present invention, as in FIG. 20, and (A) is displayed on the display screen. Explanatory drawing showing the movement status of the cursor, (B) is the operation state of the transmitter in the coarse adjustment indicated by the arrow B in (A), (C) is the transmission in the fine adjustment indicated by the arrow C in (A). Indicates the operating status of the machine. It is a flowchart which shows the 1st example of a flow regarding the relation between ON / OFF operation | movement of the light emitting element control part in the remote control system which concerns on Embodiment 1 thru | or Embodiment, and cursor position determination. It is a flowchart which shows the 2nd example of a flow relevant to ON / OFF operation | movement of the light emitting element control part in the remote control system which concerns on Embodiment 1 thru | or Embodiment, and cursor position determination. 16 is a flowchart showing a first example of a flow related to an on / off operation of a light emitting element control unit and a fine adjustment alternative signal generating unit in the remote control system according to the sixth embodiment. 16 is a flowchart showing a second example of a flow related to the on / off operation of the light emitting element control unit and the fine adjustment alternative signal generating means in the remote control system according to the sixth embodiment. It is a top view which shows notionally the state which applied the spring type slide switch as a light emission control button. It is explanatory drawing which shows notionally the state which applied the touch-type switch as a light emission control button, (A) is a top view, (B) is a side view. It is explanatory drawing which shows the state which applied the pressure sensor as a light emission control button, (A) is a top view, (B) is a conceptual diagram which shows the state grasped with weak force, (C) is grasped with strong force It is a conceptual diagram which shows the state. It is explanatory drawing which shows notionally the state which applied the wire type switch as a light emission control button. It is explanatory drawing which shows notionally the state which applied the pistol trigger as a light emission control button, using the shape of a transmitter as a pistol type. It is a perspective view which shows the remote control transmitter made into the aspect which attaches to a support stand and controls a cursor. It is explanatory drawing which shows the conceptual diagram of a remote control transmitter provided with the button for commands. It is explanatory drawing which shows notionally the remote control system which provides a distance measurement means and controls a cursor three-dimensionally. It is a waveform diagram explaining the situation of the magnitude of the amplitude detected in FIG. 33, (A) is a waveform diagram when the communication distance is short, (B) is a waveform diagram when the communication distance is long.

Explanation of symbols

1 system (remote control system)
2 transmitter (remote control transmitter)
2d position detection light emitting unit 2dc light emitting element control unit 2rc command button 2sw light emission control button 3 receiver (remote control receiver)
3p light receiving unit 4 display device 4d display screen 4p cursor 21 pressure sensor 22 cross key 23 capacitance touch pad 24a spring type slide switch 24b touch type switch 24c pressure sensor 24d wire type switch 24e wire 24f trigger 31 light receiving signal processing unit 32 Displacement detection unit 33 Output detection unit 34 Noise filter 35 AD conversion unit 36 Arithmetic processing unit 36a Header detection unit 40 Cursor control unit 51 Support base Ax1 Optical axis Axc Central axis AL Approximate line CL Communication distance k Coordinate conversion constant LED1 First light emitting element LED2 Second light emitting element LED3 Third light emitting element LED4 Fourth light emitting element LEDs Start signal light emitting element LS Optical signal LS1 First optical signal LS2 Second optical signal LS3 Third optical signal LS4 Fourth optical signal LSp Position detection optical signal LSs detection Start light signal Sd Light reception signal Sop Calculation output Sr Position detection reception signal Sr1 First reception signal Sr2 Second reception signal Sr3 Third reception signal Sr4 Fourth reception signal Srs Detection start reception signal Sp Position detection output signal Sp1 First output signal Sp2 Second output signal Sp3 Third output signal Sp4 Fourth output signal Sps Detection start output signal Tc Light emission period, detection period Ts, Tss Light emission pulse width VL1, VL2, VL3, VL4, VLs Amplitude X First axis direction Y Second axis direction

Claims (5)

A remote control transmitter having a position detection light emitting unit for emitting a position detection light signal; a light reception signal processing unit for detecting a position detection reception signal from the received position detection light signal; and the remote control based on the position detection reception signal In a remote control system comprising a remote control receiver having a displacement detection unit for detecting displacement of a transmitter, and a cursor control unit for controlling the position of a cursor displayed on a display screen by coarse adjustment and fine adjustment,
The position detection light emitting unit includes a first light emitting element and a second light emitting element arranged symmetrically with respect to a central axis of the remote control transmitter in a first axis direction, and a second crossing the first axis direction. The third light emitting element and the fourth light emitting element, which are arranged symmetrically with respect to the central axis in the axial direction, and the first light emitting element to the fourth light emitting element are sequentially driven by a time division driving method by pulse position modulation. A light emitting element control unit for sequentially emitting the first optical signal to the fourth optical signal as the position detection optical signal,
The received light signal processing unit detects first to fourth received signals corresponding to the first to fourth optical signals as the position detection received signals, respectively.
The displacement detection unit converts the waveform of the position detection reception signal to obtain a first output signal to a fourth output signal corresponding to each of the first reception signal to the fourth reception signal as a position detection output signal. And calculating the displacement of the remote control transmitter in the first axis direction from the amplitude relative relationship between the first output signal and the second output signal, and the amplitude relative relationship between the third output signal and the fourth output signal. An arithmetic processing unit that calculates a displacement of the remote control transmitter in the second axis direction from
The cursor control unit is configured to control the position of the cursor based on the displacement of the remote control transmitter in the first axis direction and the displacement of the remote control transmitter in the second axis direction,
The coarse adjustment is performed based on the displacement of the remote control transmitter ,
In the fine adjustment, a fine adjustment optical code signal as position information for fine adjustment of the position of the cursor is transmitted from the fine adjustment alternative signal generating means included in the remote control transmitter to the remote control receiver, and A remote control system characterized by being configured to perform based on the fine adjustment optical code signal received by a control receiver. 2. The remote control system according to claim 1 , wherein the fine adjustment substitute signal generating means is configured to be driven and controlled by a cross key. The remote control system according to claim 1 , wherein the fine adjustment alternative signal generating means is configured to be driven and controlled by a capacitive touch pad. 4. The structure according to claim 1 , wherein the coarse adjustment function is disabled when the fine adjustment substitute signal generating means is driven and controlled. 5. Remote control system. In a display device configured to control the position of the cursor displayed on the display screen by a remote control system,
5. The display device according to claim 1 , wherein the remote control system is the remote control system according to any one of claims 1 to 4 .

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