Patent Publication Number: US-5839958-A

Title: Voice synthesized bridge bidding module and method of using same

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     This invention relates to the game of contract bridge, and in particular, to a device and method for registering and expressing the bidding in a contract bridge game. 
     2. Description Relative to the Prior Art 
     Bridge is among the most popular of participant games in the United States as well as in many other countries. The Encyclopedia Britannica (15th edition) states: &#34;It has spread all over the world and constitutes a social phenomenon that in some respects is unparalleled in the history of games. It is estimated that there are 100 million bridge players throughout the world.&#34; Among these players the level of play ranges from relaxed, recreational play to intense, sophisticated play as exemplified by duplicate bridge competitions and tournaments. 
     It has long been a matter of concern among bridge enthusiasts that unauthorized information may possibly be transmitted between partners by voice intonation, inflection or other oral mannerisms during the critical verbal bidding process. In the prior art, this problem has been addressed by disclosure of non-verbal bidding devices such as player actuated visual mechanical or electrical displays which sequentially disclose the bidding in a visual, rather than a verbal manner. Such a mechanical device is disclosed in U.S. Pat. No. 5,482,275 issued to Grinoch et al., while an electrical display device is disclosed in U.S. Pat. No. 3,420,526 issued in the name of L. S. Berger. 
     It will be appreciated that such visual bidding devices introduce a new dimension into the game not present in the traditional verbal bidding process. That is, the time-honored orally spoken and aurally heard bids are replaced by a new and unfamiliar bidding regimen introducing an unanticipated and unforeseeable variation into the classical game. The present invention solves the problem of the unauthorized transmission of information during bidding while retaining the game&#39;s universally followed verbal expression of the bids. 
     SUMMARY OF THE INVENTION 
     Each of the four players of a game of contract bridge are provided with an identical battery operated module containing switches which a player uses to enter bids of from 1 to 7 in Spades, Hearts, Diamonds, Clubs or No-Trump, according to the rules of the game. Additionally there are switches for signalling, Pass, Double, and Re-Double. After entering a bid via the switches of a module, the bid is transferred to an internal microcontroller. The microcontroller converts the value of the bid to a digital representation, stores this digital value in the microcontroller&#39;s RAM, and inputs the digital value to an internal voice synthesizer. The voice synthesizer drives a small loudspeaker mounted in the module which outputs a verbal message audible to all the players which is the linguistic expression of the selected bid. If a player has made a mistake in manually entering his bid, the bid will have already been vocally output when the player actuated his selector switches. The player then actuates a &#34;Cancel&#34; button which erases his last bid from RAM, and he may then re-enter a corrected bid. The verbal messages&#39; expressions are free of all oral mannerisms, and are determined solely by the electromechanical characteristics of the voice synthesizer. The bidding is continued by the other players using their modules in a similar manner until a contract is reached. Each bidding sequence is stored in the microcontroller of each individual module allowing a review of the bidding at the conclusion of a hand. A &#34;Review&#34; button on each module, actuated in turn by each player, causes the sequential verbal readout of the hand&#39;s bidding. A &#34;Clear&#34; control on the module erases the bidding data from the microcontroller memory prior to the start of a new hand. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     The invention will be described with respect to the figures of which: 
     FIG. 1 is a drawing of a bidding module of the invention, 
     FIG. 2 is a block diagram of the elements of the module of FIG. 1, and 
     FIG. 3 is a block diagram of a second embodiment of the invention. 
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Referring to FIG. 1, each player is provided with a bidding module 10, containing push button switches, e.g. 12, for inputting the player&#39;s numerical bid value, or to &#34;Pass&#34;. The suit designation is also input by means of one of the suit switches, e.g. 14, or a &#34;No-Trump&#34; switch 15. There are also a &#34;Double&#34; switch 16, and a &#34;Redouble&#34; switch 18 mounted in the module 10. A bidder depresses the switches for a selected bid value and a selected suit, and the selections are digitally encoded and stored in the RAM of an internal microcontroller 22. If a player selects the &#34;Double&#34; switch 16 or &#34;Redouble&#34; switch 18 that information is also stored in the microcontroller. 
     Referring to FIG. 2, the keyboard 26 contains the switches described above in connection with FIG. 1. When data is input through the keyboard 26, the microcontroller 22 initiates a key scan program subroutine utilizing its internal CPU 23 to identify and digitize the value of the selected key. The digital representation of the keyed data is stored in RAM memory 28 (which may be a semiconductor device separate from the microcontroller 22), under control of the program of the microcontroller 22. This operating program is stored in an EPROM 30 which may be internal or external to the microcontroller 22. The digital representation of the keyed data is also transferred to a voice synthesizer 24. The voice synthesizer 24 is a self contained semiconductor device which accepts digital data representing voiced signals, and under control of an internal microcomputer and memory converts the digital signals to their analog equivalents. The analog output of the voice synthesizer 24 feeds a loudspeaker 20 via a volume control 21. It will be noted that the synthesized voice output is of uniform sound quality, and provides no information other than the spoken bid itself. 
     In the case of a bidding error, a &#34;Cancel&#34; switch actuates a subprogram to erase the last stored bid data from RAM. Other program subroutines in the microcontroller 22 memory allows the verbal replay of the bidding by actuation of the &#34;Review&#34; switch 25, and clearing of all stored bidding values from RAM by means of the &#34;Clear&#34; switch 27. 
     The vocalized bid may be expressed in a variety of languages, with English as the preferred language. 
     The microcontroller 22 is preferably a CMOS MC68HC705C8 unit containing 8 bit architecture, on-chip CPU (Central Processor Unit), RAM (Random Access Memory ) and EPROM (Erasable Programmable Read Only Memory), manufactured by Motorola Inc., Phoenix Ariz. Additional RAM and EPROM memory may be peripherally incorporated to provided expanded memory. The voice synthesizer is preferably a CMOS TMS50C20 synthesizer manufactured by Texas Instruments, Inc., Dallas, Tex., operated under program control of the microcontroller 22. Power is supplied by means of a battery unit 29. 
     In a second embodiment of the invention shown in FIG. 3, four bidding modules 34,36,38,40 are mounted on a conventional bridge table top, 33. The bidding modules 34,36,38,40 are identical to the bidding module 10 shown in FIG. 1, except the modules 34,36,38,40 do not have internal individual microcontrollers 22 and voice synthesizers 24 (FIG. 2). Instead, each module 34,36,38,40 is connected by digital data and address lines 42,44,46,48 to a central microcontroller 50 and by analog voice data lines 52,54,56,58 to a central voice synthesizer 60 mounted under the bridge table top, 33. The microcontroller 50 and the voice synthesizer 60 have interconnecting digital address lines, digital data lines and power buses, 62. 
     The interconnections between any one of the bidding modules 34,36,38,40 and the central microcontroller 50 and central voice synthesizer 60 are identical to that shown in FIG. 2. The microcontroller 60 is programmed to sequentially accept inputs from each of the bidding modules 34,36,38,40, and to activate the central voice synthesizer to transmit the voiced bid over the appropriate analog voice data line 52,54,56,58 to the speaker of the appropriate module, as previously explained. 
     The &#34;Review&#34;, &#34;Clear&#34; and &#34;Cancel&#34; switches also operate as described for the independent bidding module 10, as described above. 
     The invention has been described in detail with particular reference to preferred embodiments thereof, but it will be understood that variations and modifications can be effected within the spirit and scope of the invention. For example, the microcontroller and its associated memories may be incorporated into a single chip with the voice synthesizer.