JP2865205B2 - n-dimensional scanning advertising tower - Google Patents

Description

Description: TECHNICAL FIELD [0001] The present invention relates to a scanning display device such as an advertising tower.

[Conventional technology]

Conventional display devices such as signboards and outdoor advertising towers have been made by painting paint on an iron plate or cutting out plastic. In recent years, large TVs such as jumbotrons
Advertisement towers of new display systems, such as system, liquid crystal TV system, lightning news system with improved LED, and Q vision system, have been added to it.

[Problems to be solved by the invention]

The conventional display device of the advertising tower including the TV system is made so that the observer can correctly see when the observer is in a stationary state. Therefore, the display device of these advertising towers has a problem that it is difficult and difficult to read the contents of the display device of the signboard of a nearby advertising tower when an observer who gets on a vehicle moving at a high speed sees. .

Therefore, conventionally, two solutions for solving this problem have been adopted. One is a method in which the advertising tower is formed far away to reduce the viewing angle of the display device of the advertising tower viewed from the observer, thereby reducing the subjective movement amount of the moving observer. The other is a method of devising that the relative speed approaches zero by the observer shaking his head sideways according to the moving speed.

However, building an advertising tower far away requires an increase in the size of the advertising tower, which limits its installation space. On the other hand, building an advertising tower close to it requires a moving vehicle as the speed of the vehicle increases. It is necessary to take some measures to ensure that the display contents of the advertising tower are correctly read from the observer of the ride.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is easy for an observer of a ride to read a display content of an advertising tower formed relatively close to a fast-moving vehicle by moving his / her head. It is an object of the present invention to provide an advertising tower for displaying such an image without the need.

[Means for solving the problem]

In order to achieve the above object, the present invention is to provide a display device of an advertising tower in which an observer actively uses the movement of a vehicle (hereinafter, referred to as “observation moving object”),
The display of M columns of 1 × L pixels, in which pixels composed of three RGB pixels are arranged in an array, is used to switch the 1 × L pixels sequentially M times within a predetermined time. A display of L × M pixels relatively tuned is obtained.

The present invention relates to a display device for obtaining n-dimensional (n is 2 or 3) pixels, wherein a display unit is provided along a moving path of the observation moving body, It is configured by a sensor unit that detects passage and outputs movement information, a data generation unit that generates a display switching control signal based on movement information from the sensor unit and outputs display data, and a number of display elements. A display unit for inputting display data based on a display switching control signal from the data generating unit and sequentially switching and displaying n-1 dimensional pixel displays. In the n-dimensional scanning advertising tower device configured as described above, a plurality of the display units are provided in parallel with each other at predetermined intervals along a moving direction of the observation moving body.

The sensor section includes a sensor circuit section for detecting the observation moving body, and a judgment section for judging a moving state of the observation moving body based on a detection signal from the sensor circuit section. Is output to the data generating unit. That is, the sensor section includes a sensor circuit section including first and second sensors installed at a predetermined interval along the moving direction of the observation moving body, and which of the sensors has detected first. Discriminate and determine the moving direction of the observation mobile object,
Or a determination unit that measures the detection time of the two sensors and calculates the moving speed of the observation moving body based on the measured value, and outputs the moving direction and the moving information of the moving speed to the data generating unit. Be composed.

A latch circuit for latching movement information of the observation movable body from the sensor unit, a progromble oscillator for generating a clock signal of a predetermined frequency based on the movement information latched by the latch circuit, An address signal generating circuit for generating an address signal to the memory unit based on the oscillation clock signal of the progable oscillator, and data for generating a display data input control signal to the parallel-to-serial conversion unit also based on the oscillation clock signal of the progable oscillator An input control signal generation circuit, and a display drive control signal generation circuit that generates a display drive control signal to the display unit based on the oscillation clock signal of the progable oscillator as well. Address signals, display data input control signals, and An address signal generation circuit for generating various display switching control signals of a display drive control signal, a control signal generation means for a display data input control signal circuit and a display drive control signal generation circuit; A display unit that outputs display data based on the address signal generated by the unit; and a display drive control signal from the control signal generation unit that converts parallel display data output from the memory unit to serial display data. And a parallel-serial conversion unit for transferring the data to the display unit based on the data transfer signal.

The display unit has a plurality of display array columns in which the display array unit is smaller than the number of display pixels along the moving direction displayed along with the movement of the observation moving body, and receives data from the data generation unit. A serial-to-parallel conversion unit that inputs serial display data transferred from the parallel-to-serial conversion unit based on a control signal and converts the data into parallel display data; and data that is the display drive control signal from the data generation unit to a display driver unit. The parallel display data of the serial-parallel conversion unit is latched based on the latch signal, a display driver unit of a display driving unit that drives a display array unit, and the display data that is driven by the driving unit of the display driver unit and is latched. And a display array unit for displaying.

[Action]

The display device of the NTSC-TV system obtains one still image frame by operating in the electron beam x and y2 directions. However, in the present invention, in order to obtain a two-dimensional display, scanning is performed in one direction. Things. In order to obtain a two-dimensional display in the one-way scanning, the scanning is decomposed into temporal data changes and physical displacements, the former is electronically scanned by a display device, and the latter is a moving object for observation. This is realized by the movement of.

Therefore, in the two-dimensional display of the present invention, when viewed from a stopped state, the bar-shaped display device simply appears to flicker. However, a two-dimensional display can be obtained when a rider observes a fast-moving vehicle or the like.

Next, in order to obtain a three-dimensional display according to the present invention, a plurality of display devices of the display unit are installed at predetermined intervals also in the depth direction, and scan in the depth direction.

(Example of the invention)

 An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is an overall block diagram. The circuit shown in the overall block diagram is roughly composed of three blocks: a sensor unit, a data generation unit, and a display unit.

The sensor unit includes a sensor circuit unit 11 that detects a movement of a vehicle on which an observer rides (hereinafter, referred to as a “moving body”), and a movement direction of the moving body that receives movement information from the sensor circuit unit. And a determination unit 12 for calculating a movement speed and transmitting movement information for changing a timing signal in a timing generator 13.

The data generation unit includes a memory unit 14, a parallel-serial conversion unit 15 for converting parallel display data output from the memory unit into serial display data, and a timing for generating an address signal for the memory unit and generating a control signal for each unit. And a generator 13.

The display unit receives serial display data from the data generation unit, converts the serial display data into parallel display data, and latches the parallel display data.
A display driver 17 that drives and controls 18 display elements, and a LE
A display array unit 18 using an appropriate display element, such as D, EL, etc., capable of blinking at a predetermined scanning speed.

The basic operation will be described with reference to FIG. Here, it is assumed that one pixel is represented by two pixels of R and G, each of which is represented by one bit. It is assumed that a rider observes a display unit of about 128 cm in length and 256 × 1 pixel on a moving object. Assuming that the moving body is moving to the left in the traveling direction on the drawing at 40 km / h, the observer sees the display unit relatively move as shown in FIG. 2 (a). Assuming that the display period at this time is 100 msec, the user has moved to the right by about 111 cm during that period.

That is, a display of 128 cm × 111 cm can be obtained within 100 msec. (FIG. 2 (b)) When the display data of the display unit is further switched every 78 μsec, a display of 256 × 128 pixels can be obtained as shown in FIG. 2 (c).

78 μsec = 100 msec / 128 Next, referring to the timing chart of FIG.
The flow of display data will be described. When the moving object passes through the sensor circuit unit 11, the movement information is detected, the moving speed and the moving direction are calculated, and the decoded data and the start trigger are given to the data generating unit. As a result, the display data of the screen is successively read from the data generation unit, and the screens 0... Screen m... Are displayed as in this timing chart. One frame screen is composed of 128 columns of column data, and one column data is an 8-bit memory unit 14.
RG is composed of 32 pieces of read data. The read data is transferred between the data generation unit and the display unit in the form of serial display data.

 Therefore, basic timing information transfer will be described.

The memory address signal counted up by the address clock ADR-CK is loaded into the parallel-serial conversion unit 15 at the rise of the shift clock SCK signal when the load signal LDB is at the low level. Further, serial display data is transferred to the display unit by the rising conversion of the shift clock SCK signal,
The serial display data is taken into the serial-parallel converter 16 by a data shift clock DSCK which is an inverted clock of the shift clock SCK. When all data of 256 bits each of RG is shift clocked, it is latched by the display driver unit 17 by the data latch clock DLCK signal,
It is displayed as column data COLn.

Details of the timing generator 13 in the data generator will be described with reference to the block diagram of FIG. The latch circuit 41 stores display data obtained by decoding the movement information of the moving object transferred from the determination unit 12 of the sensor unit for the programmable frequency divider. The programmable oscillator 42 includes a voltage-controlled oscillator VCO 425 and a phase comparator 42 to obtain an oscillation frequency multiplied by the reference signal oscillator 422.
3 is the main configuration. The frequency oscillated by the VCO 425 is divided by the programmable frequency divider 421 to a predetermined frequency and enters the phase comparator 423. On the other hand, reference signal generator 4
The reference signal generated at 22 is also input to the phase comparator 423.
The phase comparator compares the phases of these two signals, and forms a PLL circuit that passes through the low-speed transfer filter LPF424 and serves as the control voltage of the VCO 425.

By using such a programmable oscillator, an oscillation frequency that is a multiple of the reference signal is obtained.
Needless to say, a method of dividing a proper frequency by a programmable dividing period to obtain a predetermined frequency may be used.

The oscillation clock CK signal obtained by the programmable oscillator in this manner creates an address clock ADR-CK signal by the counter 43, and further creates a load signal LDB by the condition circuit 45. The address counter 44 based on the ADR-CK signal is an address counter of the memory unit 14, and counts up when the ADR-CK signal rises. The outputs of the counter 43 and the address counter 44 further generate a data latch clock DLCK signal of the display driver unit 17 by a condition circuit 46. The SCK signal is for the parallel-serial conversion unit 15.

Now, when the moving speed of the moving object is 40 km / h, the display period is 100 msec, the number of pixels is 256 × 128 pixels, and 1 pixel = 2 picture elements of RG, 1 bit each, it is 65536 within 100 msec.
Since pixel = 256 × 128 × 2 × 1 is displayed, it is sufficient to operate the clock CK signal of the counter 43 at about 655 kHz.

By the way, what happens when the moving speed of the moving object passes at 30 km / h with respect to the display device set as described above. Since the moving amount of the moving object is about 83 cm in the display period of 100 msec on the display unit, the moving speed of the scanning on the display unit side is
If you do the same as in the case of 40 km / h, the display will be vertically long with a horizontal size of 128 cm x 83 cm. Further, when the moving speed of the moving object passes at 50 km / h, when the calculation is performed in the same manner as described above, the display becomes a horizontally long display of 128 cm × 139 cm.

Also, the moving speed of the moving object is detected, the scanning speed is changed, and the clock CK signal is output.When the moving speed of the moving object is 30 km, it is approximately 492 kHz.When the moving speed of the moving object is 50 km, it is approximately 818 kHz. Then, the display periods change to 133 msec and 80 msec, respectively, however, the same display screen of 128 cm × 111 cm can be obtained.

Further, the display unit will be described with reference to FIG. Since the display data signal transfer from the data generation unit to the display unit is serialized, if the display unit is, for example, one display unit with 32 dots for each picture element, FIG.
As described above, the number of pixels can be easily increased or decreased in units of a unit, while three wires are sufficient to connect the units.

In the display unit, as shown in FIG. 5B, the serial display data is used as the input Din of the G-side shift register 51 to perform the latch clock and the shift clock by the data shift clock DSCK. The display data signal shifted by 32 clocks is input to the R-side shift register 54, and the display data signal shifted by 32 clocks becomes the output Dout to the next display unit. When a display data signal for one column is shift clocked to all display units, the data latch clock DLCK
As a result, the display data signal latched and clocked by the drivers 52 and 55 is displayed under the previous column data.
Also, by inputting the inverted clock of the DSCK as the DLCK and displaying the display data in the shift clock, it is possible to perform various video expressions.

Next, another embodiment will be described with reference to FIG. Sixth
The figure is an explanatory diagram of the operation when displaying three-dimensional pixels. The first display units are arranged not on one dimension but on a plane to create a flat display device having L × M pixels.

When the moving object passes from the right side of the drawing as shown in FIG. 6 (a), it appears to the observer who has boarded the moving object that the display unit has moved relatively to the right. (FIG. 6 (b)).

Therefore, although the amount of data is large, if the data from the data generation unit similar to that in FIG. 1 is changed at a switching speed corresponding to the moving speed of the moving object, as shown in FIG. M ×
A three-dimensional display of N pixels is obtained.

For example, if the display of a sphere is described as a model, the slice data of the sphere is sequentially transferred to the two-dimensional display unit as shown in FIG. 6 (d).

At this time, as shown in FIG. 6 (d), the ring-section display data of the sphere may be transmitted at regular intervals, but the display data may be transmitted at different transmission timings as shown in FIG. 6 (e). .

Needless to say, the finer the transmission timing of the transfer display data, the smoother the spherical display image can be obtained.

By the way, when an LED is used as a display element, the viewing angle is considerably limited. Fig. 7 (a) is LE
9 shows the directivity characteristics of the D element.

In this case, in order to enlarge the display area, it is effective to arrange a plurality of LED elements and set them in different directions as shown in FIG.

FIG. 8 shows still another embodiment. A pseudo three-dimensional display is performed by arranging a plurality of one-dimensional display devices in the depth direction.

A case where three one-dimensional display devices are arranged in the depth direction as shown in FIG. 8A will be described.

When the moving body is moving from right to left in the drawing, the display device in FIG. 8A relatively moves rightward, and the observer who gets on the moving body sees FIG. ), It looks like three planes with depth.

For example, as shown in FIG. 8 (c), the background screen is on the innermost surface (C), the screen of a product or a person is on the second screen (A), and the product name or the item that you want to appeal especially is on the foreground (A) To display the screen. Then, an impressive advertisement display with a sense of depth is obtained as shown in FIG. 8 (d).

〔The invention's effect〕

As described above, according to the present invention, in a display device such as an advertising tower, it can be installed not only in a place where a viewer and a wall approach, such as a subway or a tunnel, which could not be installed conventionally, but also in one row. , It is possible to display in a small space and with low power consumption.

Further, a display of an arbitrary size can be easily formed by the moving speed of the moving body and the electronic scanning. However, since the afterimage effect of the eyes is used, it does not take much time to display one screen.

Further, by displaying characters or marks such as company names and product names or one scene of a television or poster in color according to the condition of the display, a visual advertisement effect can be obtained.

[Brief description of the drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a block diagram showing the overall circuit configuration, FIG. 2 is a diagram showing a configuration example of one screen, FIG. 3 is a timing chart showing the operation,
FIG. 4 is a block diagram showing details of a timing generator, FIG. 5 is a block diagram showing a configuration example of a display unit, and FIG.
FIG. 7 is a diagram showing a three-dimensional display unit, FIG. 7 is a diagram showing a three-dimensional display unit in an LED element, and FIG. 8 is a diagram showing a configuration of a pseudo three-dimensional display device. 11 ... Sensor part, 12 ... Determining part, 13 ... Timing generator part, 14 ... Memory part, 15 ... Parallel-parallel conversion part, 16 ... Serial-parallel conversion part, 17 ... Display driver part, 18 ... Display Array, 41 Latch circuit, 42 Programmable oscillator, 421 Programmable frequency divider, 422
…… Reference signal oscillator, 423 …… Phase comparator, 424 …… LP
F, 425 VCO, 43 counter, 44 address counter, 45, 46 condition circuit, 51, 54 shift register, 52, 55 driver, 53, 56 display element.

Claims (6)

(57) [Claims] 1. A display device for obtaining an n-dimensional (n is 2 or 3) image, wherein a plurality of display units are provided in parallel with each other at a predetermined interval along a movement path of an observation moving body. A sensor unit that detects the passage of the observation moving object and outputs the movement information, a data generation unit that generates a display switching control signal based on the movement information from the sensor unit and outputs display data, It has an n-1 dimensional display array unit composed of a number of display elements, and inputs display data based on a display switching control signal from the data generation unit to sequentially switch and display n-1 dimensional image display. And a display unit, wherein the sensor unit is provided at a predetermined interval along a moving direction of the observation moving body.
A sensor circuit unit including a sensor, a determination unit that measures a detection time of the two sensors, calculates a moving speed of the observation moving body based on the measurement, and outputs movement information of the moving speed to the data generation unit. A latch circuit for latching movement information of the observation movable body from the sensor unit, and a progable oscillator that generates a clock signal of a predetermined frequency based on the movement information latched by the latch circuit. An address signal generating circuit for generating an address signal to the memory section based on an oscillation clock signal of the progable oscillator; and a data for generating a display data input control signal to a parallel-serial conversion section based on the oscillation clock signal of the programmable oscillator. Based on the input control signal generation circuit and the oscillation clock signal of the prog A display drive control signal generation circuit for generating a display drive control signal to the display unit, and a control signal for generating various display switching control signals based on movement information of the observation moving body from the sensor unit. Generating means, a memory unit for storing image display data and outputting display data based on the address signal generated by the control signal generating means, and converting parallel display data output from the memory unit to serial display data And a parallel-to-serial conversion unit for transferring to a display unit based on a data transfer signal from the control signal generation unit. A serial-parallel conversion unit that inputs serial display data to be transferred and converts it into parallel display data;
A display driver unit of a display drive unit that latches parallel display data of the serial-parallel conversion unit based on a data latch signal that is the display drive control signal from the data generation unit to a display driver unit, and drives a display array unit; ,
A display array unit that is driven by a driving unit of the display driver unit and displays the latched display data. 2. An advertising tower device for obtaining a three-dimensional image, wherein said display unit is provided in plural at predetermined intervals in a depth direction. A shift register for latching and serially clocking the serial display data;
2. The n-dimensional scanning advertising tower device according to claim 1, wherein the display unit includes a driver of a display driving unit and a display element as a display array unit, and is configured by connecting a plurality of the display units. 4. The display device according to claim 1, wherein the display elements of the display array section are LEDs, and the LEDs have at least a red (R) light emitting element and a green (G) light emitting element.
3D scanning advertising tower device. 5. The display unit according to claim 1, wherein each of the R light emitting element and the G light emitting element is separately provided with a shift register.
The n-dimensional scanning advertising tower device according to claim 3, wherein the advertising tower device has a configuration including a driver and a display element. 6. The n-dimensional scanning advertising tower device according to claim 4, wherein one pixel of said display array section comprises one or more LEDs.