JPH0667616A - Swing type display device - Google Patents

Abstract

PURPOSE:To stably display images without requiring skill by detecting the swing in the prescribed direction of a device body having many light emitting cells which are arrayed in a line form at an exact point and correctly synchronizing the swing motion of this body and display control in the swing type display body which swings the above-mentioned body back and forth by a manual operation, etc., flatly scanning the light emitting cell array and uses the after-image effect by this scanning and the time series light emission control of the light emitting cell array. CONSTITUTION:This swing type display device has a swing detecting means which detects the swing of the body in a prescribed direction by sensing the acceleration of the swing body of the body, a means for controlling reading out of display data by obtaining a trigger signal from the detection signal and a timing control means for controlling the timing of the operation of a driving means. This swing detecting means is constituted of a moving body 7 which moves back and forth within the prescribed range regulated by a guide mechanism 6 when the body is sung back and forth and a position sensor 8 which detects the passage of this moving body in the prescribed intermediate position of the moving range thereof without contact.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a swing type display device for displaying an image due to an afterimage effect on the swing surface by reciprocating swing by hand-held operation or the like.

[0002]

2. Description of the Related Art First, a schematic form and a basic method of using a swing type display device which is the object of the present invention will be described. FIG. 1 shows a use state of a swing type display device according to an embodiment of the present invention, showing a person holding the body 1 of the swing type display device by hand, holding it upright and repeatedly swinging left and right. ing. The device main body 1 has an elongated rod shape, and a light emitting cell array 3 in which a large number of light emitting cells 2 are linearly arranged along the longitudinal direction of the main body 1 is provided in a portion corresponding to the front surface thereof. Light emitting cell 2
Usually consists of light emitting diodes.

When the user grips the grip portion 4 at the base end portion of the apparatus main body 1 by hand and swings as shown in FIG. 1, the light emitting cell array 3 is scanned in a plane. By the combination of this manual scanning and the time-series light emission control of the individual cells 2 of the light emitting cell array 3, an image due to the afterimage effect can be displayed on the scanning surface. In the example of FIG. 1, the character string "STOP" is displayed.

That is, the display control circuit which functions as follows is built in the apparatus main body 1. The bit-mapped display data is stored in a memory, the display data is sequentially read out in a predetermined order at an appropriate speed, and the data is aligned for each line and used as a drive signal for each light emitting cell 2, and each light emitting cell 2 Drive on and off. When this display control and the swing operation of the main body 1 are synchronized by some means, an afterimage is formed on the moving surface (scanning surface) of the light emitting cell array 3 in the space as if an image was printed on a sheet by a moving head serial printer. The image resulting from the effect is displayed as if it were floating.

[0005]

The swing type display device of this kind has the following problems basically. Since a person holds the apparatus body 1 by hand and swings, unlike the electrically and mechanically controlled stable movement, the scanning speed and the scanning length (swing speed and swing width) of the light emitting cell array 3 are controlled by a person who operates. It is very difficult to repeat scanning with the same movement even if the same person operates it. Due to these instability factors, it is difficult to properly synchronize the swing operation of the main body 1 with the display control, and thus it is not possible to stably display an image as intended.

As a means for synchronizing the swing operation and the display control, for example, it may be considered that an electronic buzzer emits a notification sound immediately before the display control is started. In this case, the operator starts the swing of the main body 1 with a buzzer sound. A buzzer sound is generated each time the display control is repeated, but if the repeated sound and the phase of the reciprocating swing are in good phase, the image is displayed correctly. However, if you do not practice enough and you are not skilled, you cannot perform the correct swing operation. If the operation cannot be performed normally in synchronization, the beginning of the image may be missing, a part of the image may be reversed, or the size of the image in the scanning direction may be significantly large or small.

As another synchronizing means, a movable weight and a mechanical switch mechanism which operates by the movement of the weight are built in the apparatus main body 1, and the start timing signal of the display control is obtained from the switch mechanism. It is possible to do it. That is, when the main body 1 that is stationary or shakes in the negative direction is shaken in the positive direction and a certain amount of acceleration acts on the weight at that time, the weight collides with the switch mechanism at the end of its movable range. The circuit is configured to operate this and to start the display control in response to the switch signal. However, even with this configuration, practice thoroughly while checking the display status by your own operation with a mirror, and the relationship between the amount of swing operation of the main body 1 and the movement of the internal weight, the strength of the weight movement and the operation of the switch mechanism. It was difficult to perform the correct display operation without understanding the relationship with the condition. When operated by an unfamiliar person, the switch mechanism often does not operate even if the swing direction is reversed, and the switch mechanism may operate at an unexpected swing phase point. As a result, a part of the image is missing or inverted, and the display is not performed as intended.

The present invention has been made in view of the above-mentioned conventional problems, and an object thereof is to detect at a proper point that the main body of the swing type display device is swung in a predetermined direction, Based on the detection signal, the swing operation of the main body and the display control are correctly synchronized so that the expected image can be stably displayed even if one is not very skilled in the swing operation.

Another object of the present invention is to repeatedly display a stable and easily visible image even when the speed and swing width of the swing operation are not constant when the swing operation of the main body of the apparatus is repeated or the swing operation is different from person to person. Is to be able to.

Another object of the present invention is to change the swing mode of the main body of the apparatus with reference to the direction of gravity so that the image to be displayed can be switched without any other selection operation or switching operation. To provide a swing type display device.

[0011]

In the swing type display device according to each of the following inventions, an elongate device main body in which a large number of light emitting cells are linearly arranged is reciprocally swung by hand-held operation or the like to emit the light. A cell array is scanned surface-wise, and an image due to an afterimage effect is displayed on the scanning surface by a combination of this manual scanning and time-series emission control of the light-emitting cell array, and as a common basic configuration,
Display data storage means for storing bit-mapped display data, display data read control means for sequentially reading the display data from the storage means in a predetermined order at an appropriate speed, and the display sequentially read by the read control means. In synchronization with this, data is aligned by the number of bits corresponding to the light emitting cell array and is used as a drive signal for each light emitting cell, and driving means for turning on and off each light emitting cell and sensitive to the acceleration of the swing operation of the main body. Swing detection means for detecting that the main body is swung in a predetermined direction, and timing control means for obtaining a trigger signal from the detection signal of the swing detection means and controlling the timing of the operation of the read control means and the drive means. It has and.

In the first invention, the swing detecting means is an acceleration sensor that generates an output corresponding to the acceleration of the swing motion of the main body, and the output waveform of the acceleration sensor is processed to detect the swing motion of the main body. And a signal processing means for detecting a specific operation point.

In the second aspect of the invention, the swing detecting means has a movable body which reciprocates within a predetermined range regulated by a guide mechanism when the main body is reciprocally swung, and the movable body has a range of movement. A position sensor for non-contact detection of passage of a predetermined intermediate position.

In the third invention, when the reciprocating swing of the main body is repeated, the read control means reads the display data after the detection signal of the swing detection means is generated in the timing control means. A display start timing adjusting means is added to variably adjust the delay time until the start based on one or both of the instantaneous speed of the appropriate point of the swing motion and the repetition period.

In the fourth invention, when the reciprocating swing of the main body is repeated, in the timing control means, the read speed of the display data by the read control means is set to an instantaneous speed at an appropriate point of the swing operation. A data output speed adjusting means for variably adjusting based on one or both of the repeating cycles is added. In the fifth invention, both the display start timing adjusting means and the data output speed adjusting means are added.

According to a sixth aspect of the present invention, swing mode discriminating means for discriminating which one of a plurality of modes the reciprocating swing operation mode of the main body belongs to is preset based on the direction of gravity, and the swing. A data selection means for selectively designating which of the plurality of display data stored in the storage means is to be read by the read control means according to the output of the mode discrimination means is added.

[0017]

In the first aspect of the invention, since a signal that reflects the acceleration of the swinging body relatively faithfully is obtained from the acceleration sensor, the signal processing means can perform relatively simple processing on the sensor output. By performing this, a specific motion point in the swing motion can be accurately captured. Since the trigger signal of the timing control means is obtained from the output of the signal processing means, the swing operation of the main body and the start timing of the display control can be properly synchronized.

In the second aspect of the invention, during the swing motion of the main body, the movable body moves from one end to the other end in response to the reversal of the acceleration direction.
Since the intermediate position of the stroke of the movable body is the detection point of the position sensor, a detection signal is generated from the position sensor with high probability in the middle of the swing range of the main body, regardless of the force of the swing operation of the main body. can get. Since the trigger signal of the timing control means is obtained from the output of the position sensor, the swing operation of the main body and the start timing of the display control can be properly synchronized.

The swing speed and swing width of the main body are not constant depending on a person or in some cases, but when the same image (character string) is repeatedly displayed by repeating the swing operation, it is displayed and disappears so as to float in the space. Obviously, it is easier to see if the images are aligned. According to the third aspect, the start positions of the display images can be aligned. According to the fourth aspect, the length of the display image in the swing direction can be adjusted. Furthermore, according to the fifth aspect, it is possible to align the head positions of the display images and adjust the lengths.

There are various means for changing the image to be displayed. For example, the display data of the storage means may be rewritten by using a data writing means such as a keyboard, or some display data may be stored in the storage means in advance and output by using a selection input means such as a switch. Just specify the data. On the other hand, in the sixth aspect, the image displayed is automatically changed depending on the swing mode of the main body. Swing modes are classified and set based on the direction of gravity, for example,
A mode that swings symmetrically so as to intersect the direction of gravity (vertical line) and a mode that swings vertically along the direction of gravity are distinguished, and different images are displayed in each mode.

[0021]

EXAMPLE A slender rectangular printed wiring board 5 shown in FIG. 2 is incorporated in a slender cylindrical rod-shaped body 1 shown in FIG. The light emitting cell array 3 is formed on the substrate 5 by 3
Two light emitting diodes (LEDs) 2 are arranged in a straight line at regular intervals, and a control circuit for image display, which will be described in detail below, is mounted. Also,
A slider 7 mounted on a guide rail 6 and a position sensor 8, which are the main components of the swing detecting means according to the second aspect of the invention, are arranged at the lower end of the substrate 5. When the substrate 5 is built in the device body 1, the LED arrays 3 are arranged in a slit-shaped transparent window portion as shown in FIG.
A power supply battery is built in the grip portion 4 of the main body 1.

The structure of the display control circuit mounted on the printed wiring board 5 is shown in FIG. 4, and the timing of its operation is shown in FIG.

In FIG. 4, bitmapped display data is stored in the memory 9. As will be described later, in synchronization with the swing operation of the main body 1, the display data in the memory 9 is read out in 1-bit units in a predetermined order at an appropriate speed, input to the shift register 10, and stored in the shift register 10.
Every time 2 bits of data are prepared, the 32 bits of data (display data for 1 line) are arranged in parallel in the line buffer 1.
Forwarded to 1. The 32-bit data of the line buffer 11 is transferred to the 32 LEDs 2 via the driver 12, respectively.
Is turned on and off, and each LED 2 is turned on / off (turned on or off). The address of the memory 9 at the time of reading the display data is given from the address counter 13. Further, the head address is preset in the address counter 13 from the register 14 at the start of reading the display data.

The CPU (microprocessor) 15 controls the timing of the series of operations for displaying an image. The CPU 15 synchronizes the swing operation of the main body 1 with the display control as follows based on the output of the swing detection means.

The structure of the swing detecting means in the embodiment of FIG. 2 is shown enlarged in FIG. 2, 3, and 4, the slider 7 is a cylindrical body having an appropriate mass, and the guide rail 6 penetrates the center hole 7a of the slider 7 so that the slider 7 can move smoothly along the guide rail 6. it can. Both ends of the guide rail 6 are bent at a right angle and soldered and fixed to the board 5. The linear portion at the center of the guide rail 6 is the movement range of the slider 7. In this embodiment, the stroke of the slider 7 is set to be substantially equal to the total length of the slider 7.

Further, as shown in the figure, the guide rail 6
Are attached to the substrate 5 in such a direction that they intersect with the arrangement direction of the LED array 3 (longitudinal direction of the main body 1) at an angle of about 60 degrees. Therefore, when holding the grip portion 4 of the main body 1 by hand and holding the grip portion 4 in an almost vertical direction, the slider 7 is in contact with the lower left end portion of the slanted guide rail 6. The position of the slider 7 in this state is called the left end position, and the state in which the slider 7 moves along the guide rail 6 from here and contacts the opposite end is called the right end position.

The position sensor 8 detects the movement of the slider 7 along the guide rail 6 in a non-contact manner, and is particularly set so as to detect this during the stroke of the slider 7. The position sensor 8 of this embodiment is composed of a reflection type photo interrupter, and as can be seen from FIG. 4, the relationship between the stroke of the slider 7 and the position sensor 8 is adjusted so as to have the following operation characteristics.

When the slider 7 is at the left end position, in the position sensor 8, the reflection of light from the light emitting portion does not enter the light receiving portion, and the output becomes low level.

When the slider 7 moves a little (set distance) from the left end position to the right end side, in the position sensor 8, the light from the light emitting portion hits the slider 7 and is reflected, and a part of the light enters the light receiving portion and the output is high. Become a level. Note that, transiently, the output of the position sensor 8 increases in an analog manner at a rate of change proportional to the moving speed of the slider 7.

Even when the slider 7 reaches the right end position, in the position sensor 8, the reflection of light from the light emitting portion enters the light receiving portion and the output is at a high level.

Next, the swing motion of the main body 1 and the slider 7
The relationship between the above operation and the output of the position sensor 8 will be described with reference to FIG.

As shown in FIG. 1, when holding the grip portion 4 of the main body 1 by hand and holding it upward and swinging back and forth substantially symmetrically, the change in the position of the tip of the main body 1 is graphed as shown in FIG. It becomes like A). The zero reference line in this graph is the tip position when the main body 1 is in the vertical state. When the main body 1 swings back and forth, the slider 7 inside moves back and forth along the guide rail 6. Guide rail 6
(B) is a graph in which the position change of the upper slider 7 is plotted and superimposed on the time axis of the characteristic (A). When the main body 1 is reciprocally swung by hand, the swing speed increases from one end to almost the middle point and decreases from there to the other end. That is, the direction of the swing acceleration changes at approximately the midpoint of the swing width. The internal slider 7 moves from one end (left end position) to the other end (right end position) in response to the reversal of the swing acceleration direction. Moreover, the moving speed of the slider 7 corresponds to the swing speed at the almost midpoint of the swing width. The above relationships are represented by characteristics (A) and (B).

The output change of the position sensor 8 corresponding to the movement characteristic (B) of the slider 7 is shown in FIG. 5 (c). As described in detail above, when the slider 7 slightly moves from the left end position, the output (c) of the position sensor 8 changes from the low level to the high level (the rate of change is proportional to the swing speed) and the left end position. Just before returning to, it changes from high level to low level.

The output (c) of the position sensor 8 is made large and small by the two comparators 8b and 8c of the preprocessing circuit 8a.
The threshold value E1 and E2 are binarized respectively, and the two binarized outputs (d) and (e) are processed by the gate 8d to obtain the trigger signal St. As is clear from FIG. 5, the trigger signal St rises when the slider 7 slightly moves from the left end position (that is, rises when the main body 1 passes in the predetermined direction at approximately the midpoint of the swing width) and its pulse width. Tv is the body 1 at approximately the midpoint of the swing width
The signal is inversely proportional to the swing speed of. The cycle Tf of the trigger signal St is equal to the swing cycle of the main body 1.

Based on the trigger signal St and the reference clock signal CK having a sufficiently high frequency from the oscillator 16, the CPU 15 executes timing control for image display as follows. An outline of the control procedure of the CPU 15 is shown in FIG.
Is shown in.

As shown in FIG. 4, the CPU 15 has two counters 15a and 15b which are incremented by the reference clock signal CK, and the reference clock signal CK which is incremented by one.
A frequency divider 15c that divides the frequency into / N to generate a line synchronization signal LCK described later is set.

Each time the trigger signal St rises, the count value Tf of the counter 15a is transferred to the register 15d,
After resetting the counter 15a, the counting operation is restarted (steps 611 and 612 in FIG. 6). That is, the counter 15a measures the cycle Tf of the trigger signal St (hereinafter referred to as the swing cycle), and stores the measured value Tf in the register 15d every time.

The other counter 15b also has a trigger signal S.
A process of resetting at the rise of t and restarting (step 612), stopping the count when the trigger signal St falls, reading the count value Tv at that time, and determining the frequency division ratio N as follows. (Step 62)
1). That is, the counter 15b measures the pulse width Tv of the trigger signal St (hereinafter referred to as the swing speed inversely proportional value), and sequentially updates the frequency division ratio N based on the measured value Tv.

The line synchronization signal LCK generated by dividing the reference clock signal CK into 1 / N also serves as a latch signal RCK for updating the data of the line buffer 11 (see It also serves as a reference signal for measuring the delay time from the generation of the trigger signal St to the start of display output).

In step 621, the swing speed inversely proportional value Tv obtained by the counter 15b when the trigger signal St falls is multiplied by an appropriate constant n, and the value is set as the frequency division ratio N in the register 15e. Frequency divider 15c
Is the reference clock signal CK according to the value N of the register 15e.
To generate a line synchronization signal LCK. Therefore, as the swing speed inversely proportional value Tv is larger (the actual swing speed 1 / Tv is smaller), the frequency division ratio N is larger and the cycle Tl of the line synchronization signal LCK is larger (the frequency Fl of the line synchronization signal LCK is smaller). Become). When the cycle of the reference clock signal CK is Δt, the cycle Tl of the line synchronization signal LCK is (Δt × N).

Each time the line synchronizing signal LCK is generated, the line counter 15f is incremented (step 63).
3), the line counter 15 is provided every time the trigger signal St rises.
f is reset (step 612). That is, the line counter 15f counts the number of pulses of the line synchronization signal LCK from the time when the trigger signal St is generated. Hereinafter, the count value of the line counter 15f is referred to as the line number L.

From the generation of the trigger signal St until the number of lines L reaches Ls, the display permission signal ENB applied to the driver 12 is turned off and all LEs of the array 3 are turned on.
D2 is turned off (step 632 → 633). When the number of lines L reaches Ls, a predetermined start address is set in the register 14, a predetermined data transfer signal SCK is generated, and the data of the first one line of the predetermined display data is read from the memory 9, It is latched in the line buffer 11 by the latch signal RCK, and further the display enable signal ENB
Is turned on (steps 634 → 635 → 637). As a result, 32 LEDs are displayed according to the 1-line data (32 bits) at the beginning of the bit-mapped display data.
2 is turned on or off.

Next, each time the line synchronization signal LCK is generated, the display data read line is updated in order until the number of lines L reaches (Ls + Ld), and the LED array 3 is driven by each line data. (Step 636
→ 637). Here, Ld is the number of lines of display data.

When the number of lines L becomes (Ls + Ld) or more, the display permission signal EN is reached until the value Lz is large enough to determine that the main body 1 is not swung.
B is turned off to turn off all the LEDs 2 of the array 3 (steps 638 → 639). When the number L of lines becomes equal to or more than Lz, it is assumed that the main body 1 is not swung, and the operation mode shifts to an appropriate number of LEDs 2 simultaneously blinking (steps 638 → 640). The trigger signal S
When t occurs, the flashing mode returns to the normal display mode.

In the above display control process, the number of lines Ls at which the display data is read and the display is started is not fixed, but is a value variably set in step 622 executed at the falling edge of the trigger signal St.

As described above, the frequency division ratio N is determined according to the swing speed inversely proportional value Tv, but the display start line number Ls is determined according to this N and the swing cycle Tf. Since the signal obtained by dividing the reference clock signal CK by 1 / N is the line synchronization signal LCK, the reference clock signal CK
Is Δt, the period T of the line synchronization signal LCK is
l is (Δt × N). The swing cycle Tf is (Δt ×
The value divided by N) is the total number of lines in one cycle, and a value obtained by multiplying the value by an appropriate constant of 1 or less is set as the display start line number Ls. For example, the total number of lines in one cycle is 100
, The display start line number Ls is, for example, 40.
To In step 622, m is a constant, and (Tf /
Ns × (m / Δt) is calculated to determine Ls.

The relation between the display control performed as described above and the swing motion of the main body 1 is schematically shown in FIG.

Here, the cycle of the line synchronization signal LCK is Tl.
= Δt × N, the delay time Tdelay from the generation of the trigger signal St to the start of display output is: Tdelay = Tl × Ls = Δt × N × Ls = Δt × N × (Tf / N) × (M / Δt) = Tf × m, and (m × 100)% of the swing period Tf becomes the delay time. That is, the delay time changes in proportion to the swing time Tf. Further, since the display speed is inversely proportional to the cycle (Tl = Δt × N = Δt × Tv × n) of the line synchronization signal LCK, the larger the actual swing speed 1 / Tv is (the swing speed inversely proportional value Tv obtained by the counter 15b is Tv). The smaller is), the faster the display speed.

As shown in FIG. 7, swing end points X to Y
Up to the swing width Ws, from the swing end point X to the display start line Ls to the non-display width W1, and from the display start line Ls to the display end line (Ls + Ld) to the display width W
2, the non-display width W3 is from the display end line to the swing end point Y. When the delay width Wd is a value (Tdelay / Tv) obtained by multiplying the delay time Tdelay by the swing speed 1 / Tv, the non-display width W1 is substantially proportional to the delay width Wd.

A case where a certain swing width Ws is repeatedly swung at a certain speed is compared with a case where the same swing width Ws is swung at a double speed. In the case of, the swing speed 1 / Tv becomes twice and the swing cycle Tf becomes half. The delay time Tdelay is halved by halving the swing cycle Tf, but the main body 1 moves at a speed almost twice as fast as the delay time Tdelay.
Will be the same. Therefore, the non-display width W1 does not change.
Similarly, when the swing speed 1 / Tv is doubled, the display speed is doubled (the time width of the display section is halved), but since the main body 1 moves at a speed almost twice, The width W2 does not change. As described above, if the swing width Ws is constant, the non-display width W
1, the display width W2, and the non-display width W3 hardly change, and the position and size of the image that is displayed so as to float up in the space by repeating the swing and disappears are kept almost constant.

Further, a case where a certain swing width Ws is repeatedly swung in a certain swing cycle Tf and a case where a double swing width 2 × Ws is swung in a double swing cycle 2 × Tf are compared. . In the case of, the swing speed 1 / Tv is the same as. Swing cycle is 2
By doubling, the delay time Tdelay also doubles, and since the main body 1 moves at almost the same speed, the delay width Wd doubles. Therefore, the non-display width W1 is almost doubled. Similarly, since the swing speed 1 / Tv is the same, the display speed is the same, and therefore the display width W2 is almost the same. That is, even if the swing width Ws becomes large, the display width W2 (image size) hardly changes, and the non-display width W1 becomes large to reduce the position variation of the image.

Further, a case where a certain swing width Ws is repeatedly swung in a certain swing cycle Tf and a case where a double swing width 2 × Ws is swung in the same swing cycle Tf are compared. In the case of, the swing speed 1 / Tv becomes almost twice. Swing cycle Tf
Is the same, the delay time Tdelay is the same, and the main body 1 moves at a speed almost twice that of the delay time Wd.
Is almost doubled. Therefore, the non-display width W1 is almost doubled. Similarly, when the swing speed 1 / Tv is doubled, the display speed is doubled (the time width of the display section is halved), but since the main body 1 moves at a speed almost twice, The width W2 is almost unchanged. That is, similarly to the above example, even if the swing width Ws becomes large, the display width W
2 (image size) is almost unchanged, no display width W1
Is increased to reduce the image position variation.

When the reciprocating swing of the apparatus body 1 is manually repeated as shown in FIG. 1, the swing cycle and swing speed fluctuate irregularly, but the fluctuation amount is not large as in the example of the above-mentioned operation, Does not change so rapidly. Therefore, the above-mentioned automatic adjustment mechanism of the delay time and the display speed works in combination, so that the position and size of the image that is displayed and disappears as if it floats up in space by repeated swings is extremely stable, and A continuous display that is easy to visually recognize can be performed.

In the embodiment described in detail above, both the automatic adjustment of the delay time and the automatic adjustment of the display speed are performed in a composite manner. However, by performing the automatic adjustment of only one of them, the repeated display is performed. The improvement effect of stabilizing the image formed is obtained. Also, the swing width W of the device body 1
If it is assumed that the variation amount of s is small enough to be ignored in practical use, the swing period Tf and the swing speed inversely proportional value Tv can be regarded as parameters that are substantially proportional to each other. By automatically adjusting one or both of the time and the display speed as described above, a sufficient effect can be obtained in terms of displaying a stable image. What kind of automatic adjustment method should be adopted may be determined in consideration of the specific purpose and usage of the device and the cost of the device.

Another modification of the above embodiment will be described. In the control method described with reference to FIGS. 4, 5, and 6, the frequency division ratio N of the frequency divider 15c is set to the swing speed inversely proportional value Tv.
It is changed according to, but change it as follows. As described above, the swing cycle is Tf, and the cycle of the reference clock signal Ck is Δt. In addition, the total number of lines in one cycle is adjusted to Lmax set appropriately by the following control.

Therefore, the frequency division ratio N is determined as follows based on the swing cycle Tf detected by the counter 15a. N = Tf / (Lmax × Δt) When controlled in this way, the display start line number Ls
Is constant (thus, the process of changing Ls according to Tf is unnecessary).

According to the above control method, when the swing width Ws in FIG. 7 is changed, the non-display width W1, the display width W2, and the non-display width W3 are changed in proportion thereto. That is, the width of the display image expands and contracts according to the swing width Ws. Such an automatic adjustment method is also useful depending on the purpose and method of use of the device.

The important factors that affect the basic performance of this type of swing-type display device are the accuracy, reliability, and stability of the swing detection means. The swing detecting means of the embodiment shown in FIGS. 2, 3 and 4 is a non-contact type when it passes through a predetermined position in the middle of the stroke of the slider 7 and the slider 7 which reciprocates slightly along the guide rail 6. And a position sensor 8 for detecting. The slider 7 moves in response to the high-sensitivity response to the reversal of the acceleration direction of the swing motion of the main body 1, and the position sensor 8 accurately detects the movement of the slider 7 at a fixed position without obstructing the movement. . As a result, the swing of the main body 1 in the predetermined direction can be detected with high accuracy at a stable operation point. Therefore, even if the automatic adjustment as described above is not performed, the swing operation of the main body 1 and the display start timing can be appropriately synchronized, so that the expected image can be stably obtained even if you are not very skilled in the swing operation. Can be displayed.

The position sensor 8 is a reflection type photo interrupter, but a non-contact position detecting means of another system such as a magnet provided on the slider 7 side to detect the slider 7 by a position sensor using a Hall element is used. Can be adopted.
Further, in the above embodiment, the analog output of the position sensor 8 is binarized by two different threshold values E1 and E2, and the swing speed information Tv is obtained from the time difference between the two binarized signals. However, when using a position sensor that cannot obtain such an appropriate analog output, it is necessary to provide two position sensors with their detection points close to each other and obtain the swing speed information Tv from the time difference between the detection signals of both sensors. Good.

Next, the invention using the acceleration sensor as the swing detecting means will be described in detail.

FIG. 8 shows a concrete example of the mechanical structure of the swing detecting means using an acceleration sensor. As described above, the acceleration sensor 2 is attached to the tip of the elongated rectangular printed wiring board 5 on which the LED array and the display control circuit are mounted.
0 is attached. The base of the acceleration sensor 20 is formed by bending the base end of a strip-shaped leaf spring 21 at a right angle, and the base end is fixed to the substrate 5 with a screw 22. Leaf spring 2
1 is arranged such that its longitudinal direction is parallel to the arrangement direction of the LED array and is orthogonal to the substrate 5. An appropriate weight 23 is fixed to the tip of the leaf spring 21, and the strain gauges 2 are attached to both sides of the middle portion of the leaf spring 21.
4 is fixed.

When the main body 1 swings back and forth, the leaf spring 21 bends left and right in response to the swing acceleration.
The deflection is converted into an electric signal by the strain gauge 24. The strain gauge 24 is incorporated in the sensor circuit 25 shown in FIG. 9, and from this sensor circuit 25 to the main body 1 as shown in FIG.
A detection signal (F) that corresponds to the acceleration of the swing motion of is approximately linearly output. In FIG. 10, (A) is shown in FIG.
The change in the position of the tip of the main body 1 due to the swing motion described in 1 above, and the output of the acceleration sensor 20 corresponding to this is (F).

Since the output (F) of the acceleration sensor 20 reflects the swing motion of the main body 1 very faithfully, its use for processing and display control is easy. In the embodiment of FIG. 9, the sensor output (F) is processed by the digital processing unit 26 as follows. The sensor output (F) is digitized by the A / D conversion unit 26a and input to the maximum value detection unit 26b and the polarity determination unit 26c. As shown in FIG. 10, the maximum value detection unit 26b detects both the maximum value Amax of the sensor output (F) and the maximum timing (g). Polarity determination unit 2
At 6c, a signal (h) obtained by binarizing the sensor output (F) with zero reference is obtained. Next, the speed calculator 26d obtains a time difference ΔT between the maximum timing (g) and the fall of the polarity determination signal (h), and outputs a value Vs obtained by multiplying the ΔT by the maximum value Amax as swing speed data. . Further, the trigger signal St synchronized with the maximum timing or the minimum timing of the sensor output (F) or the falling timing or the rising timing of the polarity determination signal (h) is created and output. If the pulse width of the trigger signal St is set to be inversely proportional to the swing speed data Vs, the display control can be performed as in the embodiment described with reference to FIG. Of course, the cycle of the trigger signal St becomes the swing cycle.

The function of the digital processing section 26 described above is a microprocessor (C in FIG. 4) for controlling display.
(Corresponding to PU15) can be easily realized. Further, as the processing method of the sensor output (F), various algorithms different from those in the above-described embodiment can be easily considered.

Next, the invention for discriminating the swing mode of the apparatus body 1 and automatically switching the display image will be described in detail.

First, a swing mode classification method and a discrimination method will be described. In the description so far, as shown in FIG. 1, the grip portion 4 of the main body 1 is held by hand and held upward, and swings substantially symmetrically with respect to the vertical line. This swing method is the upper swing mode in FIG. Figure 8
In the device using the acceleration sensor 20 described with reference to FIG. 9, the sensor output (F) in the upper swing mode is as shown in FIG.
The waveform becomes relatively symmetrical with respect to the zero reference line such as 0. The duty ratio of the polarity determination signal (h) of this sensor output (F) is within the range of 35 to 60%.

The right swing mode in FIG. 11 is a mode in which the grip portion 4 of the main body 1 is held by the hand and held on the right side and swings up and down substantially along the vertical line. When swinging in this way, gravitational acceleration is superimposed in the swing direction, and the output (F) of the acceleration sensor 20 in this case is
As shown in FIG. 12, the waveform is such that the whole slides downward with respect to the zero reference line. Therefore, the duty ratio of the polarity determination signal (h) of the sensor output (F) is 35% or less.

The left swing mode of FIG. 11 is a mode in which the grip portion 4 of the main body 1 is held by the hand and held on the left side, and swings up and down substantially along the vertical line. When swinging in this way, the gravitational acceleration is superimposed in the swing direction in the opposite direction to the right swing mode, and the output (F) of the acceleration sensor 20 in this case is on the zero reference line as shown in FIG. On the other hand, the whole is a waveform that slides up. Therefore, the duty ratio of the polarity determination signal (h) of the sensor output (F) is 60% or more.

As described above, the upper swing mode, the right swing mode, and the left swing mode can be easily discriminated from each other based on the duty ratio of the polarity determination signal (h) of the output (F) of the acceleration sensor 20. In order to switch the display image according to the discrimination result of the swing mode, in the configuration of FIG. 4, the display data for each mode is stored in the memory 9 in advance, and the start address of the corresponding display data at the start of the display output is registered in the register 14. You can preset it to. Such processing can be easily performed by the CPU 15.

Even in the case of a device which employs a swing detecting means consisting of the slider 7 and the position sensor 8 as shown in FIGS. 2, 3 and 4, the gravitational acceleration is caused in the upper swing mode, the right swing mode and the left swing mode. Influences the movement characteristics of the slider 7, and the duty ratio of the output (c) of the position sensor 8 shown in FIG. Therefore, it is possible to discriminate the three swing modes as described above.

The lower swing mode shown in FIG.
This is a mode in which the user grips the grip portion 4 with his / her hand and holds it downward, and swings substantially symmetrically with respect to the vertical line. In order to discriminate the lower swing mode as well, it is desirable to separately provide a sensor that detects whether the main body 1 is held upward or downward. For example, a weight that moves in the vertical direction of the main body 1 and a position sensor that detects whether the weight is above or below may be built in the main body 1.
Further, in the device employing the acceleration sensor 20 described with reference to FIGS. 8, 9, and 10, it is possible to distinguish between the upper swing mode and the lower swing mode based on the vertical asymmetry of the waveform of the sensor output (F). is there.

In the embodiment described with reference to FIGS. 4 and 6, the electronic buzzer is configured to be leveled at the time when the display data for one time is output or when the output of the display data is completed (when the number of lines L becomes Ls + Ld). By doing so, it is possible to make the operator aware of whether or not the swing is performed with a required swing width, which is effective in facilitating the operation.

By the way, in the above embodiment, even if the main body 1 is reciprocally swung, the display output is performed only when the main body 1 is swung in one direction. On the other hand, the display output can be performed even when the swing is returning. In that case, change the output order of the display data (reverse the output line order) and start the output again so that the display image during the forward swing and the display image during the backward swing appear to overlap in space. Automatically adjust the timing of. The above-described technique of the present invention is extremely effective for round-trip display.

The light emitting cell array 3 is not limited to the LED array, and other devices such as a liquid crystal shutter array and backlight combination, a PLZT shutter array and backlight combination, and a fluorescent display tube can be used.

[0075]

As described in detail above, according to the first aspect of the present invention, since a signal that reflects the acceleration of the main body of the apparatus being swung relatively faithfully is obtained from the acceleration sensor, the sensor output is relatively simple. By performing such processing, it is possible to accurately capture a specific motion point in the swing motion. Since the display control trigger signal is obtained from the output of the signal processing means, the swing operation of the main body and the display control start timing can be appropriately synchronized.

In the second aspect of the invention, during the swing motion of the main body, the movable body moves from one end to the other end in response to the high sensitivity although the direction of the acceleration is reversed. Since the intermediate position of the stroke of this movable body is the detection point of the non-contact type position sensor, regardless of the force adjustment of the swing operation of the main body, there is a high probability from the position sensor in the middle of the swing range of the main body. A detection signal is obtained. Since the display control trigger signal is obtained from the output of the position sensor, the swing operation of the main body and the display control start timing can be appropriately synchronized.

The swing speed and swing width of the main body are not constant depending on the person or in some cases, but when the same image (character string) is repeatedly displayed by repeating the swing operation, it is displayed and disappears so as to float in the space. It is very easy to see if the images are aligned. According to the third aspect, the start positions of the display images can be aligned. According to the fourth aspect, the length of the display image in the swing direction can be adjusted. Furthermore, according to the fifth aspect, it is possible to align the head positions of the display images and adjust the lengths.

In the sixth invention, the image displayed is automatically changed depending on the swing mode of the main body. The swing modes are classified and set based on the gravity direction. For example, a mode in which the swing mode is symmetrically crossed so as to intersect the gravity direction (vertical line) and a mode in which the swing mode vertically swings along the gravity direction are distinguished. Then, different images are displayed in each mode. This device is very convenient and extremely useful as a signal light for traffic control personnel, for example.

[Brief description of drawings]

FIG. 1 is a diagram showing a schematic form and a basic usage state of a swing type display device according to an embodiment of the present invention.

FIG. 2 is an internal configuration diagram of the first embodiment of the present invention.

FIG. 3 is a detailed view of a swing detection sensor portion of the first embodiment.

FIG. 4 is a block diagram showing a configuration of a signal processing system according to the first embodiment.

FIG. 5 is a timing chart showing the operation of the first embodiment.

FIG. 6 is a flowchart showing a signal processing procedure of the first embodiment.

FIG. 7 is an explanatory diagram schematically showing the operation of the above-described first embodiment.

FIG. 8 is a configuration diagram of a swing detection sensor portion of a second embodiment of the present invention.

FIG. 9 is a schematic diagram of a signal processing circuit of a swing detection sensor system according to the second embodiment.

FIG. 10 is a timing chart showing the operation of the swing detection sensor system of the second embodiment.

FIG. 11 is an explanatory diagram showing distinction of swing modes of the display device body.

FIG. 12 is a waveform diagram showing a method of discriminating a swing mode in the swing detection sensor system of the second embodiment.

[Explanation of symbols]

 1 Device Main Body 2 Light Emitting Cell (LED) 3 Light Emitting Cell Array 4 Grip Part 5 Printed Wiring Board 6 Guide Rail 7 Slider (Movable Body) 8 Position Sensor 20 Acceleration Sensor 21 Leaf Spring 23 Weight 24 Strain Gauge 25 Sensor Circuit

Claims (17)

[Claims] 1. A light-emitting cell array is planarly scanned by reciprocally swinging an elongated device body in which a large number of light-emitting cells are linearly arranged by hand-holding operation, etc. A swing type display device for displaying an image by an afterimage effect on the scanning surface in combination with time-series light emission control, comprising: display data storage means for storing display data that has been bit-mapped; and the display from the storage means. Display data read control means for sequentially reading data in a predetermined order at an appropriate speed, and each light emitting cell by synchronizing the display data sequentially read by the read control means by the number of bits matched with the light emitting cell array. Drive signal for driving each light-emitting cell to turn on / off, and to respond to the swing motion acceleration of the main body. Swing detection means for detecting that the main body has been swung in a predetermined direction, and timing control means for obtaining a trigger signal from a detection signal of the swing detection means to control the timing of operations of the read control means and the drive means. The swing detection means detects the specific operation point in the swing motion of the main body by processing the acceleration sensor that generates an output corresponding to the acceleration of the swing motion of the main body and the output waveform of the acceleration sensor. A swing-type display device, comprising: 2. The swing type display device according to claim 1, wherein the signal processing means of the swing detection means detects timing of a maximum point or a minimum point of an output waveform of the acceleration sensor. 3. The swing type display device according to claim 1, wherein the signal processing means of the swing detection means detects a timing of a zero cross point of an output waveform of the acceleration sensor. 4. The swing-type display device according to claim 1, further comprising swing cycle detection means for detecting a repetition cycle of the swing motion from an output of the acceleration sensor. 5. The swing type display device according to claim 1, further comprising swing speed detecting means for detecting an instantaneous speed at an appropriate point of the swing motion based on an output of the acceleration sensor. 6. The configuration according to claim 1, wherein the operation mode of the reciprocating swing of the main body is classified and set in advance based on the direction of gravity based on the symmetry and asymmetry of the output waveform of the acceleration sensor with respect to the amplitude reference line. The swing type display device is provided with a swing mode discriminating means for discriminating to which one of the plurality of modes it belongs to. 7. The light emitting cell array is planarly scanned by reciprocally swinging a long and narrow device body in which a large number of light emitting cells are linearly arranged, and the manual scanning and the light emitting cell array A swing type display device for displaying an image by an afterimage effect on the scanning surface in combination with time-series light emission control, comprising: display data storage means for storing display data that has been bit-mapped; and the display from the storage means. Display data read control means for sequentially reading data in a predetermined order at an appropriate speed, and each light emitting cell by synchronizing the display data sequentially read by the read control means by the number of bits matched with the light emitting cell array. Drive signal for driving each light-emitting cell to turn on / off, and to respond to the swing motion acceleration of the main body. Swing detection means for detecting that the main body has been swung in a predetermined direction, and timing control means for obtaining a trigger signal from a detection signal of the swing detection means to control the timing of operations of the read control means and the drive means. The swing detection means includes a movable body that reciprocates within a predetermined range regulated by a guide mechanism when the main body is reciprocally swung, and the movable body passes a predetermined position in the middle of the movement range. A swing-type display device comprising a position sensor that detects a contact without contact. 8. The swing type display device according to claim 7, further comprising a swing cycle detecting means for detecting a repeat cycle of the swing motion from an output of the position sensor. 9. The swing type display device according to claim 7, further comprising a swing speed detecting means for detecting an instantaneous speed of the movable body at a detection point from an output of the position sensor. 10. The structure according to claim 7, wherein the output of the position sensor is processed, and the reciprocating swing of the main body is determined based on the symmetry or asymmetry of the reciprocating motion of the movable body with respect to the position detected by the position sensor. A swing type display device comprising swing mode discriminating means for discriminating which one of a plurality of modes the operation mode belongs to is preset based on the direction of gravity. 11. The second position sensor for detecting, in a non-contact manner, that the movable body has passed a second detection point which is in close proximity to the detection point of the position sensor, and the second position sensor according to claim 7. 2. A swing type display device comprising swing period detection means for detecting the repetition period of the swing motion from the output of the second position sensor. 12. The second position sensor for detecting, in a non-contact manner, that the movable body has passed a second detection point which is very close to the detection point of the position sensor, and the position according to claim 7. A swing type display device comprising swing speed detecting means for detecting an instantaneous speed of the swing motion from a time difference between a sensor and a detection signal of the second position sensor. 13. The second position sensor for detecting, in a non-contact manner, that the movable body has passed a second detection point, which is in close proximity to the detection point of the position sensor, in the configuration of claim 7. Processing the output of the second position sensor or the output of the position sensor and the output of the second position sensor;
One of a plurality of modes in which the operation mode of the reciprocating swing of the main body is classified and set in advance based on the direction of gravity based on the symmetry or asymmetry of the reciprocating motion of the movable body with respect to the position detected by the position sensors. A swing-type display device, which is provided with a swing mode discriminating means for discriminating whether or not it belongs to. 14. The light emitting cell array is planarly scanned by reciprocally swinging a device body having an elongated shape in which a large number of light emitting cells are linearly arranged, by hand-held operation,
A swing type display device for displaying an image due to an afterimage effect on the scanning surface by a combination of the manual scanning and time-series light emission control of the light emitting cell array, and display data storage means for storing bit map display data. A display data read control unit that sequentially reads the display data from the storage unit in a predetermined order at an appropriate speed; and a bit of the display data that is sequentially read by the read control unit in synchronization with the display data to match the light emitting cell array. A driving signal for driving each light emitting cell is turned on / off by aligning the light emitting cells for several minutes, and it is detected that the main body is swung in a predetermined direction in response to the acceleration of the swing motion of the main body. Swing detection means, the read control means for obtaining a trigger signal from the detection signal of the swing detection means, Timing control means for controlling the timing of the operation of the driving means; and, when the reciprocating swing of the main body is repeated, in the timing control means, after the detection signal of the swing detection means is generated, the read-out control means Display start timing adjusting means for variably adjusting the delay time until the reading of the display data is started based on one or both of the instantaneous speed of the appropriate point of the swing motion and the repeating cycle. Swing type display device. 15. The light emitting cell array is planarly scanned by reciprocally swinging an elongated device body in which a large number of light emitting cells are arranged in a line by hand-holding operation,
A swing type display device for displaying an image due to an afterimage effect on the scanning surface by a combination of the manual scanning and time-series light emission control of the light emitting cell array, and display data storage means for storing bit map display data. A display data read control unit that sequentially reads the display data from the storage unit in a predetermined order at an appropriate speed; and a bit of the display data that is sequentially read by the read control unit in synchronization with the display data to match the light emitting cell array. A driving signal for driving each light emitting cell is turned on / off by aligning the light emitting cells for several minutes, and it is detected that the main body is swung in a predetermined direction in response to the acceleration of the swing motion of the main body. Swing detection means, the read control means for obtaining a trigger signal from the detection signal of the swing detection means, Timing control means for controlling the timing of the operation of the driving means, and when the reciprocating swing of the main body is repeated, in the timing control means, the read speed of the display data by the read control means is set to an appropriate value for the swing operation. A swing-type display device, comprising: a data output speed adjusting unit that variably adjusts based on one or both of an instantaneous speed of points and a repeating cycle. 16. The light emitting cell array is planarly scanned by reciprocally swinging a device body having an elongated shape in which a large number of light emitting cells are linearly arranged, by hand-held operation,
A swing type display device for displaying an image due to an afterimage effect on the scanning surface by a combination of the manual scanning and time-series light emission control of the light emitting cell array, and display data storage means for storing bit map display data. A display data read control unit that sequentially reads the display data from the storage unit in a predetermined order at an appropriate speed; and a bit of the display data that is sequentially read by the read control unit in synchronization with the display data to match the light emitting cell array. A driving signal for driving each light emitting cell is turned on / off by aligning the light emitting cells for several minutes, and it is detected that the main body is swung in a predetermined direction in response to the acceleration of the swing motion of the main body. Swing detection means, the read control means for obtaining a trigger signal from the detection signal of the swing detection means, Timing control means for controlling the timing of the operation of the driving means; and, when the reciprocating swing of the main body is repeated, in the timing control means, after the detection signal of the swing detection means is generated, the read-out control means Display start timing adjusting means for variably adjusting the delay time until the reading of display data is started based on one or both of the instantaneous speed and the repetition cycle of the appropriate point of the swing operation, and the reciprocating swing of the main body is repeated. At this time, the timing control means variably adjusts the read speed of the display data by the read control means on the basis of one or both of an instantaneous speed and a repetition cycle of an appropriate point of the swing motion. , Equipped with Display device. 17. The light emitting cell array is planarly scanned by reciprocally swinging an elongated device body in which a large number of light emitting cells are linearly arranged, by hand-holding operation,
A swing type display device for displaying an image due to an afterimage effect on the scanning surface by a combination of the manual scanning and time-series light emission control of the light emitting cell array, and display data storage means for storing bit map display data. A display data read control unit that sequentially reads the display data from the storage unit in a predetermined order at an appropriate speed; and a bit of the display data that is sequentially read by the read control unit in synchronization with the display data to match the light emitting cell array. A driving signal for driving each light emitting cell is turned on / off by aligning the light emitting cells for several minutes, and it is detected that the main body is swung in a predetermined direction in response to the acceleration of the swing motion of the main body. Swing detection means, the read control means for obtaining a trigger signal from the detection signal of the swing detection means, Timing control means for controlling the operation timing of the drive means, and swing mode discrimination for discriminating which one of a plurality of modes the reciprocating swing operation mode of the main body belongs to is preset based on the gravity direction. Means, and data selection means for selectively designating which of the plurality of display data stored in the storage means is to be read by the read control means according to the output of the swing mode discrimination means. Swing type display device characterized by.