1. Technical Field
The present invention relates to a display device or the like to be preferably implemented in a game machine such as a pinball machine, a slot machine, or a arcade game, and particularly to a display device for performing display, which an observer can view stereoscopically, a control method therefor, and a game machine implementing the display device.
2. Related Art
As a display device for offering a stereoscopic vision, there is a device in which each of images or equivalent images thereto obtained by taking pictures of an object in three dimensions using four cameras into sub-pixels is divided, the sub-pixels are repeatedly displayed on a flat panel display in accordance with the positions of the four cameras, and the flat panel display is observed through a step barrier (2004, SPIE-IS&T/Vol. 5291 (p 265-272), “Step barrier system multi-view glass-less 3-D display,” hereinafter referred to as first document).
Incidentally, as a game machine, there is a machine, which variably displays numbers or the like on a display disposed on a center section of a pachinko board in response to a pachinko ball entering a start-up hole to win a prize, and pays out corresponding prize balls when the same numbers or the like stop in a line as a bell ringer. As a display device for a game machine of this kind, for example, there is a display device having a pair of light sources, a pair of polarizing filters corresponding respectively to the pair of light sources, a Fresnel lens, a fine wave plate, a first polarization plate, a liquid crystal panel, and a second polarization plate sequentially disposed along the light path (JP-A-2005-52200, hereinafter referred to as second document). In this display device, an image for a right eye and an image for a left eye are formed in combination on the liquid crystal display panel in accordance with the pattern of the fine wave plate, the pop-up amount of the image is set by the difference in the pixel positions between the image for a right eye and the image for a lift eye.
Further, as another game machine, there is a machine, which implements a stereoscopic display device provided with an image splitter having transparent sections and opaque sections alternately to allow the player to view the game pictures stereoscopically using the binocular parallax method (JP-A-9-164263, hereinafter referred to as third document). In this stereoscopic display device, there are provided a left eye image signal switching circuit and a right eye image signal switching circuit to switch between a plane image and a stereoscopic image in accordance with an instruction form a display CPU.
However, regarding the display device (in the first document) for a stereoscopic vision mentioned above, there is an only disclosure that it can display a stereoscopic vision, but there is no other disclosure about a switching display between a stereoscopic image and a plane image, nor a stereoscopic display according to the proceeding of a game.
Further, although the game machines (in the second and third documents) with the stereoscopic display can display a stereoscopic image and a plane image by switching therebetween, if it is modified to be able to display various stereoscopic images, the load of the image processing system for realizing the stereoscopic vision becomes large in particular in displaying moving images. Namely, if the three-dimensional drawing process is performed in real time, a high performance image processing circuit is required, thus increasing the cost and restricting implementation in the game machine usage in view of a heat generation problem. Further, in the case in which the moving image is displayed by frame-by-frame advance using the result of the three-dimensional drawing process performed previously in the out side and stored in an image storing memory, if a high image quality needs to be assured, in view of the restrictions in the image compression method, a need for providing unfeasible amount of image storing memory arises, as a result.
Therefore, in view of the above, the invention has an advantage of providing a display device, which is low in price and can easily applied to the usage of the game machine or the like, a control method therefor, and a game machine implementing the display device.
A display device according to an aspect of the invention includes (a) a display panel having a planar image display area, (b) a barrier device having a barrier disposed opposing to the image display area, and switchable between an operative state for allowing stereoscopic viewing and an inoperative state for disabling stereoscopic viewing, wherein in the operative state, the barrier device can locally be set to a partial operative state in which a part of the image display area is covered by the barrier, and (c) a control device that outputs barrier control information to the barrier device to make the barrier device switch the state of the barrier including the partial operative state.
In the display device described above, since the barrier device is switchable between the operative state for allowing stereoscopic viewing and the inoperative state for disabling stereoscopic viewing, it becomes possible to perform display with enhanced seasoning by the stereoscopic viewing with necessary timing such as in the stage requiring warming up of the performance in view of the proceeding of the game. Further, since in the present display device, the barrier device can locally be set to a partial operative state in which a part of the image display area is covered by the barrier, the partial stereoscopic viewing becomes possible only by displaying the stereoscopic viewing image in the selective area covered by the barrier, thus the process of stereoscopic viewing, which requires relatively large amount of computation and relatively large amount of memory, can be limited to the selected area. Therefore, the load to the mage processing when displaying the stereoscopic viewing image can be reduced, thus an inexpensive display device suitable for implementation to the game machines can be provided.
According to the specific aspect or viewpoint of the invention, in the display device described above, the barrier device is divided into a plurality of partial areas, and in the partial operative state, each of the partial areas is set to either one of the operative state or the inoperative state. In this case, either of the operative state or the inoperative state is set for every partial area, thus various forms of stereoscopic viewing display can be realized by appropriately changing the display areas according to needs.
According to another aspect of the invention, the barrier device includes a drive circuit that switches each of the partial areas to one of the operative state and the inoperative state. In this case, by transmitting a predetermined control signal to the drive circuit belonging to the barrier device, each of the partial areas can be set either one of the operative state and the inoperative state.
According to still another aspect of the invention, the display panel operates in accordance with image data input to the display panel, and the control device includes the barrier control information in the image data, and the barrier device includes a barrier control device that separates the barrier control information from the image data. In this case, since the barrier control information can be included in the image data, and the barrier control information can be separated from the image data by the barrier device side, conventional data communication lines without accompanying the barrier control can be used, thus the partial stereoscopic viewing can be realized with relatively simple modification of the conventional circuit system.
According to still another aspect of the invention, the control device performs additional blending of a predetermined digit of a digital brightness signal forming the image data with a predetermined signal including the barrier control information in this case, the barrier control information can be overlapped with the image data, thus the output specification (e.g., number of bits or signal elements) of the image data can be used for the barrier control without changing the specification. It should be noted that if the image data and the predetermined signals are additionally blended, the image data is modified. However, by setting the condition not to degrade the stereoscopic viewing, no substantial problems are caused.
According to still another aspect of the invention, the control device replaces at least a part of a left vertical line of a digital brightness signal forming the image data with the barrier control information. In this case, the barrier control information can easily be overlapped with the image data, thus the output specification of the image data can be used for the barrier control without changing the specification.
According to still another aspect of the invention, the control device replaces at least a part of a left vertical line of a digital brightness signal relating to a predetermined color forming the image data with the barrier control information. In this case, the barrier control information can easily be overlapped with the image data, thus the output specification of the image data can be used for the barrier control without changing the specification. It should be noted that by selecting the predetermined color as visually indistinctive one, the modification of the stereoscopic viewing image becomes less sensible.
According to still another aspect of the invention, a communication cable for transmitting the barrier control information output from the control device to the barrier device. In this case, the state of the every partial area can be switched with a simple signal output without adding any modifications to the image data.
Further, a game machine according to another aspect of the invention includes (a) the display device according to above aspect of the invention that performs stereoscopic viewing in a display section, (b) a performance control device that makes the display device perform stereoscopic viewing display in accordance with status of the game.
According to the game machine, the display device is implemented therein, and since the game machine makes the display device perform the stereoscopic viewing display in accordance with the proceeding of the game, the game with enhanced seasoning becomes possible. In this case, in the display device, partial stereoscopic viewing becomes possible only by displaying the stereoscopic viewing image only in the selected area covered by the barrier, and the processing of the stereoscopic viewing image can be limited in the selected area. Therefore, the load of image processing in displaying the stereoscopic viewing image can be reduced, thus various forms of display become possible in the game machine having special restrictions.
Further, a method of controlling a display device according to another aspect of the invention is a method of controlling a display device switchable between an operative state for allowing stereoscopic viewing and inoperative state for disabling stereoscopic viewing including setting locally, in the operative state, the barrier device to a partial operative state in which a part of the image display area is covered by the barrier.
In the control method described above, partial stereoscopic viewing becomes possible only by displaying the stereoscopic viewing image only in the selected area covered by the barrier, and the processing of the stereoscopic viewing image can be limited in the selected area. Therefore, the load of image processing in displaying the stereoscopic viewing image can be reduced, thus an inexpensive display device suitable for implementation to the game machines can be provided.
Further, another control method of a display device controls the display device described above, thus the partial stereoscopic viewing of the display device becomes possible.
Further, a control method of a game machine according to another aspect of the invention controls the game machine described above, thus the partial stereoscopic viewing of the display device becomes possible.
The invention will now be described with reference to the accompanying drawings, wherein like numbers refer to like elements.
Hereinafter, a game machine and a display device implemented thereto according to a first embodiment of the invention will be explained with reference to the accompanying drawings.
On the surface of the game board 6, there is formed a game area surrounded by a guide rail, and in substantially the center of the game area, there is provided an image display device 8 as a device for displaying a special design. The image display device 8 can display an image, which can be viewed stereoscopically using the parallax effect in the left and right eyes by shifting the left-eye image and the right-eye image from each other to display them in the positions different from each other.
The image display device 8 includes a display screen formed of an LCD (liquid crystal display), namely an image display area IA. In the image display area IA, there can be provided a plurality of varying display areas, for example, each displaying images including identification information (the special design, a standard design), characters acting a game with varying display and so on. Namely, in the varying display areas respectively disposed on the left, center, and right in the center portion of the image display area IA, designs (e.g., fourteen kinds of designs composed of numbers of zero through nine and alphabetical characters off A through D) assigned as the identification information are displayed as varying images, thus the game with varying display is performed. Besides the above, in the image display area IA, in accordance with the proceeding, images corresponding to the present proceeding are displayed.
A game control device 50 is a main control device for integrally controlling the game. The game control device 50 corresponds to performance control means according to the invention, and is a central section for controlling the proceeding of the game such as detection of the prizewinning ball, paying out of the prize balls, and the game with the varying display. However, the device can be configured with typical device configuration, and accordingly the explanation of the specific configuration thereof will be omitted here.
A display control device 70 is a section for appropriately operating the image display device 8 by processing and operating the image control information (e.g., design display information, background screen information, the three-dimensional display image, and so on) for the game with the varying display in accordance with instructions from the game control device 50. The display control device 70 is provided with a CPU 71, an input interface 72, a video processor 73, a work RAM 74, a program ROM 75, a CGROM 76, an output interface 77, and a barrier control section 78 as shown in the drawing. The display control device 70 is basically configured as a processing circuit for a two-dimensional image, but is capable of performing various display control of, for example, displaying or moving two-dimensional images (i.e., plane images) such as a character or a lottery design, or three-dimensional images (i.e., stereoscopic images) on the background image.
It should be noted here that, the CPU 71 and the video processor 73 treat image data for stereoscopic viewing as, for example, a group of two-dimensional display data and function as control means for controlling the operational state of the image display device 8, and the video processor 73, the latter one, functions as an image processing circuit for two-dimensional display for driving the Image display device 8. Further, the CGROM 76 functions as storage means, which previously stores the image data for stereoscopic viewing and supplies the video processor 73 and so on with the data. The barrier control section 78 has a role, together with a barrier drive circuit 87 described later, of switching the state of the LCD barrier 83 of the image display device 8 to either one of operation state, non-operation state, and partial operation mode. It should be noted that the program ROM 75 stores permanent information for the operation of the display control device 70, the work RAM 74 is used as a work area for display control based on the instruction of the game control device 50.
The image display device 8 is a display section operating under control of the display control device 70, and performs various display operations relating to proceeding of the game including the varying display game and so on. The image display device 8 includes a lighting device 81, a display panel 82, and an LCD barrier 83. It should be noted here that the lighting device 81 evenly illuminates the display area of the display panel 82 from behind, the display panel 82 is capable of forming a desired color image by modulating the illuminated light, and the LCD barrier 83 is a mask capable of masking the display panel 82 with a fine cyclic pattern and of making the images formed on the display panel 82 as stereoscopic viewing images of four-viewpoints or two-viewpoints in cooperation with the display panel 82. Among these elements, the lighting device 81 is driven by a backlight drive device 85 under control of the CPU 71 provided to the display control device 70, and emits the illumination light with necessary intensity. The liquid crystal panel 82 is driven by an LCD drive device 86 under control of the video processor 73 of the display control device 70, and forms a color transfer image by modifying the illuminated light. The LCD barrier 83 is driven by the a barrier drive device 87 as a drive circuit under control of the video processor 73 and the barrier control section 78 of the display control device 70, and performs on/off operations, thereby switching between the two-dimensional display (i.e., the plane image display), the whole three-dimensional display (i.e., the whole stereoscopic display), and the partial three-dimensional display (i.e., the local stereoscopic display). It should be noted that in the case in which the LCD barrier 83 becomes the on state, a compositive image for stereoscopic viewing is formed on the display panel 82 for realizing the stereoscopic viewing through the LCD barrier 83. It should be noted here that in the case in which the LCD barrier 83 becomes the on state in whole, namely it becomes the whole operation state, the compositive image for stereoscopic viewing is formed on the display panel 82 all over the area thereof for realizing the stereoscopic viewing all over the area thereof through the LCD barrier 83 in the on state in whole. Further, in the case in which the LCD barrier 83 becomes the partial on state, namely it becomes the partial operation state, the compositive image for stereoscopic viewing is formed locally on the display panel 82 for realizing the stereoscopic viewing in a partial area through the LCD barrier 83 in the partial on state
In the above cases, the image display device 8 and the display control device 70 configure a display device capable of performing stereoscopic display of moving images relating to the proceeding of the game.
Hereinafter, a typical operation of the game machine 2 shown in
If the game ball enters the start-up hole 9 to win a prize, the game control device 50 performs a lottery, and a command for designating the display content is output to the display control device 70. The image display device 8, which operates under control of the display control device 70, displays a predetermined image in response to the command. If the result of the lottery described above is the bell ringer, in the image display area IA, the display stops in the condition (the bell ringer designs) in which the three designs displayed thereon are the same.
Hereinafter the detail of the image display device 8 will be explained. The image display device 8 allows the stereoscopic viewing in the whole area or the stereoscopic viewing in a partial area by the operation of the LCD barrier 83 as described above. If the LCD barrier 83 is in the off state (in a normal display mode, namely in a plane display mode), no light blocking pattern is formed on the LCD barrier 83 not to cause the light blocking operation in accordance with the light blocking pattern, thus all of the pixels arranged in a plane can be seen. On the contrary, if the LCD barrier 83 is in the on state in whole or in the partial on state, the light blocking with spatial distribution is preformed by the light blocking pattern formed on the LCD barrier 83, thus it becomes impossible to see all of the pixels. Specifically, when moving through the positions of the viewpoints of EY1 through EY4 as shown in
It should be noted that
If the target stereoscopic viewing image corresponds to a whole image of one frame, the data (a group of two-dimensional display data as shown in
It should be noted that by storing the stereoscopic viewing image (the composite image) composed of a plurality of sequentially varying frames in the CAROM 76 provided to the display control device 70 shown in
The foreground image FG is a varying display area in the varying display game named “reach” which is a part of the game. Namely, three digits of designs assigned as identification information are respectively displayed in the varying display areas FG1 through FG3 provided to the left, the center, and the right of the foreground image FG. In this case, the foreground image FG is for making the display of the stereoscopic figure possible, and is stored in the CGROM 76 provided to the display control device 70 shown in
On the other hand, the background image BG is typically a static or simple image, and can be an image including a character or the like. In this case, it is assumed that the background image BG is a two-dimensional image, and the image data for forming a two-dimensional image by being observed through the LCD barrier 83 in the off state is prepared. As such image data for two-dimensional display, the result of the operation conducted by an external computer can be stored in the CGROM 76 provided to the display control device 70 shown in
It should be noted that the partial areas PA shown in
The output interface 77 is provided with dot/clock terminal, Hsync terminal, DE terminal, Vsync terminal, and pixel data terminals. It should be noted here that the dot/clock terminal outputs a waveform as exemplified in
The barrier control section 78 is a section for branching a part of the pixel data to be output by the output interface 77 to the LCD drive device 86 to create a control signal output to the barrier drive device 87. The barrier control section 78 corresponds to a barrier control means according to the invention, and configures the barrier device according to the invention together with the barrier drive device 87 and the LCD barrier 83. Although there are various configurations of the barrier drive device 87, the case in which the mask judgment circuit is embedded will be explained here. In this case, the barrier control section 78, namely the mask judgment circuit creates the barrier control information regarding which of the number of the partial areas PA as exemplified in
It should be noted that the pixel data shown in
By performing aforementioned process, the load of the video processor 73 required for the on/off control of the stereoscopic viewing can dramatically be reduced, and in particular, in the video processor 73 in the present embodiment, which is the drawing system for performing the two-dimensional image processing by appropriately retrieving the two-dimensional display data stored in the CGROM 76, a large effect of load reduction can be exerted.
It should be noted that the pixel data shown in
In the modified example as described above, although the barrier control information is carried on the LSB of the blue pixel data, the barrier control information can be carried ob the LSB of the red pixel data or the LSB of the green pixel data if there are no objections in display.
In the first embodiment described above, although the pixel data terminals in the output interface 77 shown in
Further, in the above first embodiment of the invention, although the pixel position is specified, and the on/off state of the each of partial areas forming the barrier is specified using the outputs of the dot/clock terminal and the DE terminal, the Hsync terminal or other terminals can also be used, and the signal processing method can be changed accordingly.
Hereinafter, a game machine and a display device implemented thereto according to a second embodiment of the invention will be explained with reference to the accompanying drawings. It should be noted that the game machine and so on according to the second embodiment are modifications of the game machine and so on of the first embodiment, and accordingly, portions with no particular explanations are the same as those in the first embodiment, and the same sections are provided with the same reference numerals and any duplicated explanations will be omitted.
As described above, the barrier control information embedded in the vertical line in the left end of the display panel 82 is eighteen bits of parallel data, and can be decoded by a decoder circuit (not shown) embedded in the barrier control section 178 as the barrier control protocol signal. Such barrier control protocol information is output to the barrier drive device 87 as the matrix address signal directly or after processed by the barrier control section 178.
Meanwhile, the video processor 73 builds the barrier control information into the image data corresponding to the image to be displayed on the display panel 82 under control of the CPU 71. In this case, the video processor 73 embeds the barrier control information as the line data by sequentially writing the color and brightness data, which correspond to a signal to be decoded as the barrier control protocol, as a dot in one left end vertical line.
In the above process, although the barrier control information is embedded in the section corresponding to the left end vertical line in the image data to be output to the display panel 82, the barrier control information can be embedded in the section corresponding to the right end vertical line in the image data, or the section corresponding to the upper end of the lower end horizontal line in the image data, and the barrier control information can also be sent out to the barrier control section 178 and the barrier drive device 87.
Hereinafter, a game machine and a display device implemented thereto according to a third embodiment of the invention will be explained with reference to the accompanying drawings. It should be noted that the game machine and so on according to the third embodiment are modifications of the game machines and so on according to the second embodiment.
As described above, the barrier control information embedded in the vertical line in the left end of the display panel 82 is one bit of serial data, and can be decoded by a decoder circuit knot shown) embedded in the barrier control section 278 as the barrier control protocol signal. Such barrier control protocol information is output to the barrier drive device 87 as the matrix address signal directly or after processed by the barrier control section 278.
Meanwhile, the video processor 73 builds the barrier control information into the image data corresponding to the image to be displayed on the display panel 82 under control of the CPU 71. In this case, the video processor 73 embeds the barrier control information as the line data by sequentially writing the signal to be decoded as the barrier control protocol as the least significant bit of the blue brightness data as a dot in one left end vertical line.
Although in the above embodiment, the barrier control information is carried of the LSB of the blue pixel data in the left end vertical line, as a modified example, it is possible to handle the LSB of the blue pixel data in the upper horizontal line as the serial data. Further, if there are no objections in display, the barrier control information can be carried on the LSB of the red pixel data or the LSB of the green pixel data instead of the blue pixel data.
Further, in the above embodiment, although the barrier control information is embedded in the section corresponding to the left end vertical line in the image data to be output to the display panel 82, the barrier control information can be embedded in the section corresponding to the right end vertical line in the image data, or the section corresponding to the upper end or the lower end horizontal line in the image data, and the barrier control information can also be sent out to the barrier control section 278 and the barrier drive device
Hereinafter, a game machine and a display device implemented thereto according to a fourth embodiment of the invention will be explained with reference to the accompanying drawings. It should be noted that the game machine and so on according to the fourth embodiment are modifications of the game machine and so on according to the first embodiment.
In the embodiment described above, since the output interface 377 is for the LCD drive device 86 by nature, it is possible to provide an output interface dedicated to the barrier control signals independently from the output interface 377, and to intervene between the video processor 73 and the barrier control section 378, or the video processor 73 and the barrier drive device 87.
Although the invention is explained along the embodiments described above, the invention is not limited to the above embodiments. For example, although in the embodiments described above, the display panel 82 composed of the liquid crystal display device is built in the image display device 8, a rear projection type of projector, a CTR, or the like can be used instead of the liquid crystal display device. Further, the method of realizing the stereoscopic viewing is not limited to the method using a kind of parallax barrier as in the embodiments, but various stereoscopic viewing methods such as a lenticular lens array (e.g., JP-A-7-16351) or an image splitter (e.g., JP-A-9-164263).
Further, although in the above embodiments, the LCD barrier 83 and the display panel 82 for four viewpoints are used, those for two viewpoints can be used for the stereoscopic viewing by changing the design of the LCD barrier 83.
Further, although in the embodiments described above, the image display device 8 is built in the game machine 2, the image display device 8 and the display control device 70 can be built in other devices (e.g., a vehicle navigation system, and various home electric appliances including a TV game). In this case, the display position of the stereoscopic image can be set to a desired location and a desired area in the display screen by the control of the display control device 70.
The entire disclosure of Japanese Patent Application No. 2005-239402, filed Aug. 22, 2005 is expressly incorporated by reference herein.
Number | Date | Country | Kind |
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2005-239402 | Aug 2005 | JP | national |