Abstract:
The present invention relates to a card game machine wherein a game player plays a card game such as poker or the like on a CRT image displaying screen while operating keys. For instance, in the conventional poker game machine, only five cards selected in the machine are displayed on the screen, while the present invention modifies this playing method in such a manner that all the cards are displayed in an aligned fashion in a turned-over state. In accordance with the present invention, selection of the cards is performed by the game player himself or herself, and therefore the game becomes more interesting and has the effect of eliminating a feeling of doubtfulness or distinct about the game machine.

Description:
SUMMARY OF THE INVENTION 
     The present invention relates to a card game machine wherein patterns of cards are displayed on a display screen, and the image is changed based on the player&#39;s operation of the keys, thereby card playing such as poker or the like is performed. 
     Conventionally, in this kind of game machine for a poker game, five cards are are displayed on the display screen simultaneously when starting the game. Then, when an unwanted card is specified by the key operation of the player, the specified card card is replaced, and then a new pattern is automatically displayed at the corresponding position. However, in this kind of system, the cards are automatically selected inside the machine, and therefore the game lacks interest and this is the cause of giving a feeling of doubtfulness or lack of trust to the player. 
     The present invention provides a card game which can completely eliminate a feeling of doubtfulness and distrust of the player by improving the method of displaying the card images on the screen. 
     In order to attain this objective, in the present invention, all cards are displayed in a turned down state and the cards required for that image row are specified and then the specified cards are turned up again in a normal state to be displayed, and also the cards are drawn out and the enlarged images of the card patterns are displayed. 
     In accordance with the present invention, selection of the cards can be made by the player himself or herself, so that interest in the game can be further enhanced and also a feeling of doubtfulness and distrust against the game machine can be eliminated, whereby an excellent effect is obtainable in attaining the purpose of the invention. 
    
    
     BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING 
     FIG. 1 is a perspective view of a poker game machine, 
     FIG. 2 is a plan view of key arrangement of a keyboard, 
     FIG. 3 is a circuit block diagram of a poker game machine, 
     FIG. 4 is a flow chart showing operation of the game, 
     FIG. 5 is an explanatory view showing a memory configuration of RAM, and 
     FIGS. 6(1) through 6(4) are plan views showing an embodiment of displayed contents. 
    
    
     DETAILED DESCRIPTION 
     FIG. 1 shows a poker game machine wherein a method of displaying an image in accordance with the present invention is embodied. 
     In a game machine exemplified by the drawing, a display screen of a CRT (Cathode Ray Tube) 2 is installed on the top surface of a table 1, and a coin inlet 3 and a keyboard 4 for playing the game are disposed on the front and rear surfaces of the table 1, respectively. As shown in FIG. 2, on the keyboard, various kinds of keys such as &#34;Hold&#34; keys 5a through 5e, a &#34;Cancel&#34; key 6, a &#34;Card operating&#34; key 7, a &#34;Set&#34; key 8, &#34;Line Specifying&#34; keys 9a through 9d and the like are disposed. 
     FIG. 3 shows an example of circuit configuration of the poker game machine. In the figure, a CPU (Central Processing Unit) 10 executes various operations and processings while performing write/read of data for a RAM (Random Access Memory) 12 based on the program stored in a ROM (Read only Memory) 11, and also controls input/output operations of a keyboard 15 and a coin operation mechanical part 16 through 1/0 ports 13 and 14. 
     Based on a graphic code written to a refresh memory 19 corresponding to the control operation of CPU 10, CRT controller 17 reads out the image pattern of the card corresponding to that code from a ROM 18 on a line or column basis and makes a data conversion into serial data. This data is transmitted to a video circuit 20 as video signals, and by the video circuit 20, a predetermined image is displayed on a CRT 21 based on the video signals. 
     Furthermore, an oscillation circuit 22 sends out clock signals determining the operation timings of the CPU 10 and the CRT controller 17. Also, a buffer 23 holds the key input information, and a drive circuit 24 performs operations such as lighting the set lamps in the keys and the like. Further more, a drive circuit 25 drives the coin operation mechanical part 16 to execute the coin detection and release operation. 
     FIG. 4 shows an operational flow of the poker game machine. To start with, an appropriate number of coins (for example, 10 pieces) are thrown into the coin inlet 3, and thereby Step 31 becomes &#34;Yes&#34;, and the number of coins thrown into is set in an area m 1  of the RAM 12 (illustrated in Fig. 5) also in step 32, the number of coins thrown, that is the numeral &#34;10&#34; is displayed on a numeric display part X at the side part of the display screen. Subsequently, by depressing the &#34;Set&#34; key repeatedly by the times equivalent to the multiplying factor (for example, 2) Step 33 becomes &#34;Yes&#34;, and the number of set coins is set in an area m 2  of the RAM 12. Furthermore, in Steps 34 and 35, the number of set coins &#34;3&#34; is displayed on the above-mentioned numeric display part X, and also, as shown in FIG. 6(1), all 52 cards are displayed in an alignment of 4 lines×13 columns in a turned-over state on a card alignment display screen 2. Each pattern of these aligned cards has been specifically fixed at the point of operation of the above-mentioned &#34;Set&#34; key 8, and the patterns of each line and each column have been set in an area of m 5  of RAM 12 with predetermined codes. 
     Subsequently, the operation of drawing five cards out of the above-mentioned card alignment is performed. For example, when the card on the first line and the eighth column is intended to be drawn, by depressing the &#34;Line specifying&#34; key 9a specifying the first line, the cards of the first line on the display screen 2 are illustrated in sequence. Then, when the position of illumination comes to the card on the eighth column, depressing of the &#34;Line specifying&#34; key 9a is released. Subsequently, when the &#34;card operating&#34; key 7 is depressed, Step 36 and 37 are &#34;YES&#34;, and in step 38, the specified card is turned-up and the pattern is displayed on the card is drawn out and the enlarged image of the drawn pattern is displayed on the drawn card display part Z at the lower part of screen 2. When the same operation is repeated five times, the number of cards specified is added to an area m 3  of RAM 12 each time, and consequently, as shown in FIG. 6(2), five cards are turned up at the card alignment display part Y, and the enlarged images of the card patterns are displayed on the drawn card display part Z according to the sequence of drawing the cards. Furthermore, in this state, the decision of &#34;Is specifying operation completed?&#34; in Step 39 is &#34;YES&#34;. 
     Now, noting the card patterns in FIG. 6(2), four cards are diamonds, and therefore, when the &#34;5&#34; of spades is changed to a diamond, the combination of &#34;flush&#34; in the poker game is established. Then, when the cards other than the &#34;5&#34; of spades are held by depressing the first &#34;Hold&#34; key 5a through the fourth &#34;Held&#34; 5d, Step 40 becomes &#34;YES&#34;, and the number of hold &#34;4&#34; is set in an area m 4  of RAM 12. Subsequently, by depressing the &#34;card operating&#34; key 7, Step 41 becomes &#34;NO&#34; and Step 42 becomes &#34;YES&#34;, and then the card replacing operation is performed. In this operation, for example, when the card on the first line and the third column is intended to be specified, like the above-mentioned case, the &#34;Line specifying&#34; key 9a specifying the first line is depressed and when the illuminated lamp moves to the card position on the third column, depressing of the &#34;Line specifying&#34; key 9a is released. Subsequently, when the &#34;Card operating &#34; key 7 is depressed, and Steps 43 and 44 are &#34;YES&#34;, and in Step 45, the specified card is turned up and the pattern is displayed on the card column, and also the fifth card is erased and the pattern of the card now specified is displayed anew in step at the same position. Assuming that this replaced card is, for example, as shown in FIG. 6(3), the &#34;9&#34; of diamonds, the above-mentioned combination of &#34;flush&#34; is established, and both decisions in Step 48, the display telling the establishment of the combination is displayed at an appropriate position on the display screen 2, and the prize rate equivalent to &#34;flush&#34; multiplied by the number of coins set is added to the present number of coins, and the display of the numeric display part X is renewed (Step 49). 
     Assuming that the replaced card is, for example, as shown in FIG. 6(4), the &#34;Jack&#34; of spades, no combination is established and Step 47 becomes &#34;NO&#34;. In this case, in Step 50, all the cards at the alignment display part Y are turned up to display their patterns, and thereby the player can make sure of the contents of the aligned cards afterward. Then, the number of coils set is subtracted from the coin number in Step 51 and the display at the numeric display part X is renewed likewise. 
     Furthermore, in the case where five cards constitute some combination from the beginning, any &#34;Hold&#34; key is immediately depressed, and the &#34;Set&#34; key 8 is immediately depressed. Thereby Step 52 becomes &#34;YES&#34;, and the display indicates an establishment of the combination is made in Step 53, and the number of coins is added in the next Step 54, the display being renewed.