JP5172389B2 - Control circuit - Google Patents

Description

  The present invention relates to a control circuit for a money handling machine, and more particularly to automatic recognition of an expansion board.

Conventionally, in a personal computer (hereinafter simply referred to as a PC) or a product incorporating PCs, an expansion slot is attached to the motherboard, a communication board, a memory expansion board, etc. The expansion board having various functions is configured to be connectable, so that the cost of the PC main body can be reduced and the degree of freedom of function addition according to the purpose of use is improved.
In addition, for products incorporating PCs or PCs, for example, a data transmission method between a motherboard and an expansion board, such as an ISA (Industrial Standard Architecture) bus or a PCI (Peripheral Components Interconnect) bus, has been defined. There is a standard, and the connection between the motherboard and the expansion board designed according to this standard is guaranteed regardless of the type of expansion board that is connected to one motherboard. .
By the way, as a technique for further developing general-purpose technology such as the above-mentioned standard in recent years, there is a technique for recognizing the position of an expansion slot and the type of the expansion board when the expansion board is coupled to a plurality of expansion slots. (For example, refer to Patent Document 1).
Furthermore, by mounting a plurality of bus system connectors on one expansion board, when the expansion board is coupled to the motherboard, the type of bus coupled on the side of the expansion board is discriminated and the transmission system is switched. An expansion board that supports a plurality of bus systems has been proposed (see, for example, Patent Document 2).

By the way, when handling very sensitive items such as money identification processing software and money identification log data, the conventional general connection method and transmission method cannot secure a sufficient security level. In some cases, the motherboard and the expansion board are combined with an original design with low versatility.
More specifically, the above-described money identification processing software and money identification log data will be described as an example. For example, in the case of money identification processing software, the upgraded identification processing software is stored when performing maintenance work. The ROM cassette expansion board is coupled to the motherboard, and the identification processing software stored in the ROM cassette is uploaded to the storage unit of the motherboard. On the other hand, in the case of identification log data, the flash ROM cassette is coupled to the motherboard, and the identification log data stored in the storage unit of the motherboard is downloaded to the flash ROM cassette. Since these identification processing software and identification log data are not deciphered when they reach an outsider's hand, it is desirable not to adopt a file format and a data format such as a general DOS format. The original transmission method was used without adopting general-purpose technology.
JP-A-7-182081 JP-A-10-326134

  However, when the unique transmission method described above is adopted, when connecting the expansion board to the motherboard, the setting according to the type of the expansion board to be combined in advance is performed by operating a switch or the like, which makes the work complicated. End up. In addition, there is a problem that when a maintenance person or the like who joins expansion boards makes a setting error, it may not operate normally or the mother board or expansion board may break down.

  Therefore, the present invention provides a control circuit that facilitates work when a mother board and an expansion board that employ a unique transmission method are combined, and that prevents misconfiguration and improves reliability.

In order to solve the above problems, the invention described in claim 1 is an expansion board (for example, an expansion board in the embodiment) coupled to a mother board (for example, the mother board 100 in the embodiment) constituting the money handling machine. 200A to 200G), and the expansion board outputs a recognition code for identifying a type of the electric circuit mounted on the expansion board (for example, The first recognition code output unit 220, the second recognition code output unit 230, and the third recognition code output unit 240 in the embodiment are provided, and the motherboard has an input means (for example, an implementation) to which the recognition code is input. In the form of the input side terminals 120a, 120b, 120c) and the recognition code input to the input means. The expansion board that performs coupling control between input determination means (for example, the output select control unit 120 in the embodiment) that determines the type of the electric circuit mounted on the board and the electric circuit mounted on the expansion board A plurality of coupling means provided for each type (for example, the coupling dedicated control units 130A to 130G in the embodiment) and output delay means for delaying the output of the coupling means (for example, the output delay control unit in the embodiment) 140A to 140C), and the recognition code output means of the expansion board outputs a recognition code when the expansion board is coupled to the motherboard, and the input determination means outputs the recognition code to the input means. When a recognition code is input from the output means, the coupling means corresponding to the recognition code is switched to active to switch the expansion board. There line dynamic recognition, the recognition code output means and said coupling means and two-way capable single output signal lines (e.g., identification code signal line 220S in the embodiment, 230S, 240S) to be connected with It is characterized by.

  According to a second aspect of the present invention, in the first aspect of the invention, the electric circuit mounted on the expansion board is an electric circuit for uploading money identification processing data or for downloading identification log data ( For example, the ROM 300 and the flash ROM 350 in the embodiment are characterized.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the motherboard outputs the main control means for executing various programs related to the operation function of the extension board and the recognition code output means. And second input determining means for determining the type of the electric circuit mounted on the expansion board based on the recognition code input to the second input means. The main control means executes a program corresponding to the determination result of the second input determination means.

According to the first aspect of the present invention, the type of electric circuit mounted on the expansion board by the input determination unit on the mother board side of the money handling machine based on the recognition code output from the recognition code output means of the expansion board. Therefore, when connecting an expansion board to a motherboard, the connection means can be automatically switched to active, especially in the case of a uniquely designed motherboard and extension board such as a money handling machine. Compared with manual setting changes in advance when boards are combined, this setting change is made easier, and the type of electrical circuit is automatically recognized, preventing incorrect settings. Thus, the reliability can be improved.
Further, by delaying the output of the coupling means by the output delay means, the output signal of the coupling means and the signal of the recognition code can be transmitted via one signal line, so that the output of the coupling means is recognized. Compared with the case where the signal of the code is transmitted through the individual signal lines, the circuit portion related to the connection between the mother board and the extension board can be miniaturized as much as the signal lines can be omitted. There is an effect that can be done.

  According to the invention described in claim 2, in addition to the effect of claim 1, in particular, the electric circuit mounted on the extension board is an electric circuit for uploading money identification processing data or downloading identification log data. In this case, there is an effect that the expansion substrate can be easily joined while sufficiently securing confidentiality.

According to the invention described in claim 3 , in addition to the effect of any one of claims 1 and 2 , the determination result of the second input determination means, that is, the determination result of the type of electric circuit mounted on the expansion board Can be executed by the main control means, so that it is possible to prevent the main control means from executing a program for an electric circuit different from the electric circuit mounted in the extension circuit, and further improve the reliability. There is an effect that can be achieved.

Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a mother board 100 used as a control circuit board or the like of a money handling apparatus according to an embodiment of the present invention, and an expansion board 200A coupled to the expansion slot 110 of the mother board 100 by fitting of the expansion slot 210. It is shown. Here, there are a total of seven types of expansion boards 200A to 200G ranging from A to G types having different functions. In this embodiment, the A type expansion board 200A is mainly described as an example. To do. For the sake of illustration, the extension boards 200B to 200G, the ICs such as the CPU and the input / output IOs, and the signal lines such as the address bus and the data bus are omitted in FIG.

  As shown in FIG. 1, the motherboard 100 includes an expansion slot 110, whereas the expansion board 200A includes an expansion slot 210. Each of the expansion slots 110 and 210 has a pair of male and female shapes, for example, The male expansion slot 210 is inserted into the female expansion slot 110 to be coupled. When the expansion slot 110 and the expansion slot 210 are in the fitted state, the first to seventh pins of the respective expansion slots 110 and 210 come into contact with the same numbered pins and become conductive. Yes.

  The A-type extension board 200A includes a first recognition code output unit 220, a second recognition code output part 230, a third recognition code output part 240 provided in common to all of the extension boards 200A to 200G, and the extension board 200A. Only for coupling, a recognition code signal line 220S extending from the first recognition code output unit 220 to the first pin of the expansion slot 210, and a second recognition code output unit 230 to the expansion slot 210, respectively. A recognition code signal line 230S extending to the 2nd pin and a recognition code signal line 240S extending from the third recognition code output unit 240 to the 3rd pin of the expansion slot 210. Further, a signal line 250S is branchedly connected to the recognition code signal line 220S, and the signal line 250S is connected to the coupling dedicated circuit unit 250A.

Here, the differences between the B to G type expansion boards 200B to 200G (not shown) and the A type expansion board 200A will be described. First, the A type expansion board 200A mounts only the coupling dedicated circuit portion 250A for the A type expansion board, whereas the B type expansion board 200B has a coupling dedicated circuit for the B type expansion board. The unit 250B is mounted, and the coupling dedicated circuit unit 250B is branched and connected to the recognition code signal line 230S via the signal line.
The C type expansion board 200C is mounted with a dedicated circuit unit for coupling C type 250C, and the dedicated circuit unit for coupling 250C is branched and connected to the recognition code signal line 240S via a signal line. .
On the other hand, the D type expansion board 200D is mounted with a coupling dedicated circuit section 250D for the D type expansion board, and this coupling dedicated circuit section 250D is connected to the 4th pin of the expansion slot 210. It is connected to the. Similarly, a coupling dedicated circuit unit 250E is mounted on the E type expansion board 200E, and the coupling dedicated circuit unit 250E is connected to a signal line 265 connected to the fifth pin of the expansion slot 210. Further, the F type expansion board 200F is mounted with a dedicated circuit unit 250F for the F type expansion board, and the signal line 266 is connected to the 6th pin of the expansion slot 210. It is connected to the. The G type expansion board 200G is mounted with a dedicated circuit unit 250G for the G type expansion board. The signal line 267 is connected to the 7th pin of the expansion slot 210. It is connected to the.

  The first recognition code output unit 220, the second recognition code output unit 230, and the third recognition code output unit 240 are for generating a recognition code for recognizing the type of the extension boards 200A to 200G. When any one of ~ 200G is coupled to the mother board 100, it is connected to a power source (Vcc) via a resistor (not shown) according to the type of the dedicated circuit sections 250A to 250G mounted on the expansion boards 200A to 200G. Is simply pulled up, or is in an open state in which neither pull-up nor pull-down is applied. That is, from the first recognition code output unit 220 to the third recognition code output unit 240, either a Hi level signal or an open signal set in advance according to the type of the mounted extension board is output. It will be. Of the first recognition code output unit 220 to the third recognition code output unit 240, the recognition code output unit that outputs an open signal may be omitted.

  Here, for example, when no expansion boards 200 </ b> A to 200 </ b> G are inserted into the expansion slot 110 of the motherboard 100, open signals are input to all the first to third pins of the expansion slot 110. That is, if a recognition code in which an open signal is input to all the first to third pins is assigned as a recognition code of any expansion board, it cannot be distinguished from the case where no expansion boards 200A to 200G are inserted. End up. Therefore, the recognition codes assigned to the extension boards 200A to 200G are set so that at least one of the output signals of the first recognition code output unit 220 to the third recognition code output unit 240 becomes a Hi level signal. Is set.

  Since each output signal of the first recognition code output unit 220 to the third recognition code output unit 240 is a Hi level signal or an open signal, any one of the recognition code signal lines 220S to 240S from which the Hi level signal is output. In the configuration in which the enable input portions (described later) of the coupling dedicated circuit portions 250A to 250C for the extension boards from the A type to the C type connected to the active type are made active Hi by the pre-pulled Hi level signal itself. This is not possible, and there is a restriction that the active low is configured. It should be noted that the above limitation is imposed on the enable input units of the dedicated coupling circuit units 250D to 250G connected to the signal lines 264 to 267 to which the first recognition code output unit 220 to the third recognition code output unit 240 are not connected. Alternatively, an active high configuration may be used.

  The recognition codes generated by the third recognition code output unit 240 from the first recognition code output unit 220 of the extension boards 200A to 200G are set in advance in a pattern as shown in Table 1, for example. In Table 1, “Hi” indicates a Hi level signal, and “−” indicates an open signal.

  As shown in Table 1, the recognition codes generated from the first recognition code output unit 220 to the third recognition code output unit 240 are set in advance with a unique pattern for each of the expansion boards 200A to 200G, and an example thereof. In the case of a C type expansion board, the output of the first recognition code output unit 220 is set to Hi level, the output of the second recognition code output unit 230 is set to Hi level, and the output of the third recognition code output unit 240 is set to open. Is done. In Table 1, “unconnected” means a state in which none of the expansion boards 200A to 200G is coupled to the mother board 100. In this state, a pattern in which all signals for generating the recognition codes are in an open state is assigned. It has been.

  FIG. 2 is an example of the configuration of the coupling dedicated circuit unit 250A of the expansion board 200A, and shows a case where the ROM 300 (electric circuit) is mounted on the A type expansion board 200A. In the A-type expansion board 200A, the dedicated circuit unit 250A has an A-coupled output signal (and an A-coupled output delay signal output from a later-described output delay control unit 140A on the motherboard 100 side) that is active low. When output, the CE (chip enable) terminal 310 of the ROM 300 is enabled. Here, identification processing data for identifying money is installed in the ROM 300 in advance, and this identification processing data is uploaded to a storage unit (not shown) of the motherboard 100.

  FIG. 3 shows an example of the configuration of the coupling dedicated circuit unit 250B of the extension board 200B, and shows a case where the flash ROM 350 (electric circuit) is mounted on the B type extension board 200B. This B type expansion board 200B has a B coupling output signal (and a B coupling output delay signal output from a B coupling output delay control unit 140B on the mother board 100, which will be described later), which is output subsequently, in the coupling dedicated circuit unit 250B. When output is Low, the CE (chip enable) terminal 360 of the flash ROM 350 is in an operation enable state. Here, in the flash ROM 350, identification log data, which is a result of identifying money, is downloaded from a storage unit (not shown) of the motherboard 100 and stored. For convenience of illustration, the C-G type coupling dedicated circuit units 250C-250G are omitted. For example, when the C-type expansion board 200C outputs a C-coupled output signal from the motherboard 100 in an active low state, The input terminal of the coupling dedicated circuit unit 250C of the type expansion board 200C is configured to be enabled for operation. The D to G type coupling dedicated circuit units 250D to 250G may be configured in the same manner as the A to C type coupling dedicated circuit units 250A to 250C, except that there is no active Low output limitation. In addition, as the functional configuration of each of the coupling dedicated circuit units 250A to 250G, an electrical circuit that satisfies a required expansion function may be mounted. For example, a UART (Universal Receiver Transmitter) for communication port expansion, SIO, An electric circuit configuration such as (Serial Input / Output) may be mounted.

  The mother board 100 constitutes a main control board of the money handling machine, and is mounted with a CPU, a memory and the like (not shown) so that various programs can be executed. The motherboard 100 includes a gate circuit 180 for automatically recognizing the types of the A to G type expansion boards 200A to 200G and coupling the motherboard 100 and the extension boards 200A to 200G in a circuit. .

  The gate circuit 180 includes an output selection control unit 120 (input determination unit), a coupling dedicated control unit 130A (coupling unit) that controls the A type expansion board 200A, and a coupling dedicated unit that controls the B type expansion board 200B. A control unit 130B (coupling unit), a coupling-dedicated control unit 130C (coupling unit) that controls the C-type expansion substrate 200C, and a coupling-dedicated control unit 130D (coupling unit) that controls the D-type expansion substrate 200D. , A coupling dedicated control unit 130E (coupling means) for controlling the E type expansion board 200E, a coupling dedicated control unit 130F (coupling means) for controlling the F type expansion board 200F, and a G type expansion board 200G. Dedicated control unit 130G (coupling unit) that performs control, output delay control unit 140A (output delay unit), and output delay control unit 140 (Output delay means), and an output delay control section 140C (output delay means).

  The output select control unit 120 selects any one of the coupling dedicated control units 130A to 130G based on the recognition code received from the expansion boards 200A to 200G coupled to the expansion slot 110. More specifically, the first pin of the expansion slot 110 is connected to the input side terminal 120 a of the output select control unit 120 via the resistor 121, and the expansion slot 110 is connected to the input side terminal 120 b via the resistor 123. The second pin of the expansion slot 110 is connected to the input side terminal 120c via the resistor 125. The input side terminal 120a connected to the 1st pin is pulled down to GND through the resistor 122, the input side terminal 120b connected to the 2nd pin is pulled down to GND through the resistor 124, and The input side terminal 120c connected to the pin is pulled down to GND through a resistor 126. That is, when a Hi level signal is input to each of the first to third pins of the expansion slot 110, the input side terminals 120a to 120c of the output select control unit 120 are at the Hi level, and the first pin of the expansion slot 110 When an open signal is input to each of the third to third pins, the input side terminals 120a to 120c of the output select control unit 120 are at a low level. The output select control unit 120 is configured to be able to determine whether each input signal at the input side terminals 120a to 120c is Hi or Low.

  Further, a system reset signal as a latch trigger is input to the output select control unit 120. When the system reset ends after the power is turned on, the output select control unit 120 is, for example, the case of the input side terminals 120a to 120c. A configuration for respectively determining the output levels of seven types of output signals from the A select output signal to the G select output signal required at the output destination when the input level is stable and the determination of Hi or Low is determined It has become. The A select output signal to the G select output signal output from the output select control unit 120 is set so that only one of the output signals becomes an active output.

  The output select control unit 120 includes a decoder 400 as shown in FIG. 4, and an active low / RESET that is a system reset signal is input to an enable input terminal G1 of the decoder 400. Further, each of the first input terminal 400a, the second input terminal 400b, and the third input terminal 400c has an input to the input side terminals 120a to 120c, that is, the recognition code signal a of the first recognition code output unit 220, The recognition code signal b of the second recognition code output unit 230 and the recognition code signal c of the third recognition code output unit 240 are input. Also, the decoder 400 is provided with “/ Y0” to “/ Y7” as output terminals, from “/ Y1” to an A select output signal, from “/ Y2” to a B select output signal, “/ Y3”. "" From the C select output signal, "/ Y4" from the D select output signal, "/ Y5" from the E select output signal, "/ Y6" from the F select output signal, "/ Y7" from the G select output Each signal can be output. Note that “/ Y0” is a signal that is output when no expansion board is coupled, and is not used in this embodiment. Also, a common GND is connected to the terminals of “/ G2A” and “/ G2B” of the decoder 400.

Here, the input process is performed by the decoder 400 on the recognition code signals a to c inputted to the three terminals of the first input terminal 400a to the third input terminal 400c, and inputted to these three terminals. Depending on whether the recognition code signals a to c are a Hi level signal or a Low level signal, one of the seven output signals of the A select output signal to the G select output signal is selected as a Low level signal, and the remaining 6 One is a Hi level signal.
Table 2 shows the correspondence between the input conditions of the decoder 400 and the selection results.

  As shown in Table 2, for example, when the recognition code signals a, b, and c of the input condition are “Hi, Hi, Low”, the C select signal is selected, and the output result is that the A select signal is “ "Hi", B select signal is "Hi", C select signal is "Low", D select signal is "Hi", E select signal is "Hi", F select signal is "Hi", G select signal is "Hi" It becomes. When the recognition code signals a, b, and c are “Low, Low, Low”, that is, when none of the expansion boards 200A to 200G are coupled, all select signals from the A select signal to the G select signal are displayed. “Hi”. This means that it is not necessary to select a circuit to be connected subsequently.

  When the A select output signal of the output select control unit 120 described above becomes an active output (Low), the coupling dedicated control unit 130A outputs an A coupling output signal and controls the coupling dedicated circuit unit 250A mounted on the expansion board 200A. It comes to function as a part. Similarly, when the B select output signal becomes an active output (Low), the coupling dedicated control unit 130B outputs a B coupling output signal and functions as a control unit of the coupling dedicated circuit unit 250B. The coupling dedicated control unit 130C When the C select output signal becomes active output (Low), it outputs a C coupling output signal and functions as a control unit of the coupling dedicated circuit unit 250C. Further, the coupling dedicated control unit 130D functions as a control unit of the coupling dedicated circuit unit 250D by outputting the D coupling output signal when the D select output signal becomes active output (Low), and the coupling dedicated control unit 130E When the output signal becomes an active output (Low), an E-coupled output signal is output and functions as a control unit of the dedicated coupling circuit unit 250E. When the F select output becomes an active output (Low), the coupling dedicated control unit 130F outputs an F coupling output signal and functions as a control unit of the coupling dedicated circuit unit 250F. The coupling dedicated control unit 130G Becomes an active output (Low), outputs a G-coupled output signal, and functions as a control unit for the coupling-dedicated circuit unit 250G.

  As shown in FIG. 5, a logic circuit 500 is mounted in the coupling dedicated control unit 130A. The logic circuit 500 receives the A select output signal and the output signals A14 and A15 of A0 to A15 which are address buses. For example, when the A select output signal is an active output and the CPU designates a range from address 0000 to BFFF to access the ROM 300 of the expansion board 200A, the A coupling output signal becomes an active output. The CE (chip enable) terminal of the above-described ROM 300 to be coupled is enabled.

  As shown in FIG. 6, a logic circuit 550 is mounted on the coupling dedicated control unit 130B. The coupling-dedicated control unit 130B has a circuit configuration similar to that of the above-described coupling-dedicated control unit 130A. The logic circuit 550 includes a B select output signal and A14 and A15 of the address buses A0 to A15. Each output signal is input. For example, when the B select output signal is an active output and the CPU designates a range of address space C000 to FFFF to access the flash ROM 350 of the expansion board 200B, the B coupled output signal becomes an active output. As a result, the CE (chip enable) terminal of the aforementioned flash ROM 350 to be coupled is enabled. The expansion boards 200C to 200G have the same configuration as the expansion boards 200A and 200B described above, and the coupling dedicated control units 130C to 130G can be used when the CPU accesses the expansion boards 200C to 200G. The C-coupled output signal to the G-coupled output signal are output so that the CE terminals of the electric circuits mounted on the extension boards 200C to 200G are in an operation enable state. In the present embodiment, the electric circuit mounted on the extension board is shown as an example in which the ROM 300 is used for the extension board 200A and the flash ROM 350 is used for the extension board 200B, and the CE (chip enable) terminal is set in the operation enable state. However, for the other extension boards 200C to 200G, depending on the type of electric circuit to be mounted, the CE (chip enable) terminal is not limited to the operation enable state, but the electric circuit to be coupled is active. It only needs to be combined as a state. Similarly, in the present embodiment, the expansion board 200A and the expansion board 200B have been described as an example on the condition that the CPU accesses due to the relationship of memory access. However, the other expansion boards 200C to 200G are accessed by the CPU. It is not limited as a condition.

  The output delay control unit 140A delays the A-coupled output signal output from the above-described coupling-dedicated control unit 130A and outputs it as an A-coupled delay output signal. The output A-coupled delay output signal is an expansion slot. 110 is input to the expansion board 200A via the first pin. Similarly, the output delay control unit 140B delays the B coupling output signal output from the coupling dedicated control unit 130B and outputs it as a B coupling delay output signal. The B coupling delay output signal is output from the expansion slot 110. The signal is input to the expansion board 200B via the second pin. Further, the output delay control unit 140C delays the C coupled output signal output from the coupling dedicated control unit 130C and outputs it as a C coupled delay output signal. The signal is input to the expansion board 200C via a pin. Here, the delays of the A-coupled output signal to the C-coupled output signal using the output delay control units 140A to 140C, respectively, are each connected to the 1st to 3rd pins of the expansion slot 110 and the expansion slot 210. This is because signals are exchanged bidirectionally using a single signal line. The reason for this is explained by taking the pin as an example. The A-coupled output signal is directly input to the dedicated circuit section 250A. In this case, since the A-coupled output signal and the recognition code signal a output from the first recognition code output unit 220 collide and interfere with each other, the recognition code signal a is input to the input side terminal 120a of the output select control unit 120. Until the determination is made and the output of the output delay control unit 140A is prohibited as a high impedance state, the recognition code signal a is given priority. The A combined output signal delayed after the determination of the identification code after a fixed and definite time has to stabilize output as A coupling delayed output signal. The output delay control unit 140B and the output delay control unit 140C are also provided for the same reason as the output delay control unit 140A.

As shown in FIG. 7, the output delay control units 140 </ b> A to 140 </ b> C are configured by two flip-flop circuits of a first flip-flop 600 and a second flip-flop 610 and one buffer (BUF) 630. . The input signals of the buffer 630 may be an A-coupled output signal, a B-coupled output signal, and a C-coupled output signal, respectively.
Next, the delay mechanism in the output delay control units 140A to 140C will be described with reference to FIG.

  In FIG. 8, “CLK” indicates a system clock signal input to the first flip-flop 600, and “/ RESET” indicates a system reset signal input to the first flip-flop 600. As shown in FIGS. 7 and 8, “output Q1” indicates the output signal Q1 that is determined and output by the first flip-flop 600 based on the system clock signal and the system reset signal. “Output Q2” indicates the output signal Q2 that is determined and output by the second flip-flop 610 based on the above-described system reset signal and output signal Q1, and is input to the enable input unit 620 of the buffer 630. “BUF input signal” indicates an input signal input to the input unit 640 of the buffer 630. For example, an A-coupled output signal, a B-coupled output signal, and a C-coupled output signal are input. Further, “BUF output signal” indicates an output signal output from the buffer 630 based on the output signal Q 2 and the input signal input to the buffer 630. In FIG. 8, the state of each signal is indicated by “H”, “Z”, “L”, “H” means Hi, “Z” means high impedance, and “L” means Low state. doing.

  According to the output delay control units 140A to 140C, as shown in FIG. 8, after the system reset signal (/ RESET) becomes Hi, the output signal Q1 (at the timing when the system clock signal (CLK) changes from Low to Hi. The output Q1) is set to Hi, and after the output signal Q1 (output Q1) becomes Hi, the output signal Q2 (output Q2) is set Hi when the system clock signal (CLK) changes from Low to Hi again. That is, the output signal Q2 (output Q2) becomes Hi after the time T1 has elapsed since the system reset signal (/ RESET) input to the output delay control units 140A to 140C becomes Hi, and the system reset is performed in the buffer 630. The high impedance state is maintained until the time T1 elapses after the period until the signal (/ RESET) changes from Low to Hi, and in addition to the period until the time T1 elapses, and the output signal Q2 ( When the output Q2) is input, the A-coupled output signal, the B-coupled output signal, and the C-coupled output signal, which are "BUF input signals", are respectively converted into the A-coupled delay output signal, B-coupled, which are "BUF output signals" Output as a delay output signal and a C-coupled delay output signal. That is, the output delay control units 140A to 140C cause the A-coupled output signal, the B-coupled output signal, and the C-coupled output signal to start at the time when the system reset ends (when the system reset signal becomes Hi), respectively, for the time T1. Delayed signals are output as an A-coupled delay output signal, a B-coupled delay output signal, and a C-coupled delay output signal.

The money handling apparatus according to this embodiment has the above-described configuration. Next, an operation of this money handling apparatus, particularly, an operation for automatically recognizing the types of the expansion boards 200A to 200G in the mother board 100 will be described.
First, when the expansion slot 210 of the expansion board 200A is inserted and fitted into the expansion slot 110 of the motherboard 100 and the power is turned on, the first recognition code output unit 220, the second recognition code output unit 230 of the expansion board 200A, the first 3 Recognition code signals a to c (for example, “Hi, −, −” shown in Table 1) corresponding to the type of the extension board are output from the recognition code output unit 240. The recognition code signals a to c are respectively input to the input side terminals 120a, 120b, and 120c of the output select control unit 120 when the system reset is completed after the power is turned on (when the system reset signal becomes Hi). The output select control unit 120 determines the type of expansion board corresponding to the recognition code signals a to c.

  Based on the determination result, in the output select control unit 120, any one of the select output signals from the A select output signal to the G select output signal corresponds to any one of the combination dedicated control units 130A to 130G. Active output (Low) is performed for .about.130G. That is, when the expansion board 200A is connected, the output select control unit 120 determines that the expansion board 200A is based on the recognition code signal a. The output signal is active output (Low).

  When the A select output signal is actively input (Low) to the coupling dedicated control unit 130A, an A coupling output signal for coupling the circuit with the coupling dedicated circuit unit 250A of the expansion board 200A is output from the coupling dedicated control unit 130A. Active output (Low).

  When an A-coupled output signal is input to the output delay control unit 140A, the A-coupled output signal is delayed by a time T1 starting from the end of system reset after the power is turned on (when the system reset signal becomes Hi). The A-coupled delay output signal is output from the output delay control unit 140A. Then, the A coupling delay output signal output from the output delay control unit 140A reaches the CE terminal of the coupling dedicated circuit unit 250A of the expansion board 200A via the expansion slots 110 and 210, and the coupling dedicated circuit unit 250A enables the operation. State. As a result, the mother board 100 and the expansion board 200A are coupled in a circuit. Although the case where the expansion board 200A is coupled is described as an example, the same operation is performed for the expansion boards 200B and 200C, and it is only necessary to replace “A” in the above description with “B” or “C”. Therefore, detailed description here is omitted. When the extension boards 200D to 200G are coupled, the configuration corresponding to the output delay control unit 140A described above is omitted, and the output from the coupling dedicated control unit is not limited to the active output (Low). It is only an active output (Low or Hi). For other operations, it is only necessary to replace “A” with “D”, “E”, “F”, and “G”. As with the substrates 200B and 200C, detailed description here is omitted.

  Therefore, according to the above-described embodiment, based on the recognition code signals a to c output from the first recognition code output unit 220 to the third recognition code output unit 240 of the extension boards 200A to 200G, Since the type of the electric circuit mounted on the expansion boards 200A to 200G can be specified by the output select control unit 120 on the mother board 100 side, when the expansion boards 200A to 200G are coupled to the mother board 100, the coupling dedicated circuit section 250A is automatically added. ˜250G can be switched actively, especially in the case of the mother board 100 and the extension boards 200A to 200G that are uniquely designed like a money handling machine, manually set in advance when the extension boards 200A to 200G are coupled to the motherboard 100 Compared to making changes, this setting change can be omitted. Amount corresponding work is facilitated, also automatically to prevent erroneous setting Since the type of the electric circuit is recognized can be improved reliability.

  Further, when the electric circuit mounted on the extension boards 200A to 200G is an electric circuit for uploading money identification processing data or downloading identification log data, the extension boards 200A to 200G are sufficiently secured. Can be easily coupled to the mother board 100.

  Further, by delaying the outputs of the coupling dedicated control units 130A to 130C by the output delay control units 140A to 140C, transmission of the output signals of the coupling dedicated control units 130A to 130C and the recognition code signals a to c is performed one by one. Since it can be performed via the signal lines 220S, 230S, and 240S (connected by a single bidirectional input / output signal line), the output signal of the coupling dedicated control units 130A to 130C and the signal of the recognition code are transmitted. Compared with the case where transmission is performed via individual signal lines, the circuit portion for coupling the mother board 100 and the expansion boards 200A to 200G can be reduced by the amount that the signal lines can be omitted.

[Other aspects]
In the above-described embodiment, the recognition code signals a to c are input to the input side terminals 120a, 120b, and 120c of the output select control unit 120 through the resistors 121, 123, and 125, respectively, and the pull-down resistors 122, The input selection by the decoder of the output select control unit 120 is possible by being pulled down to GND by 124 and 126. However, the present invention is not limited to this configuration. For example, in the mother board 100 described above, Separately from the output select control unit 120, an input determination unit (not shown) is added as second input determination means for determining the type of electric circuit mounted on the combined expansion boards 200A to 200G. First recognition codes of the extension boards 200A to 200G are input to the input section (second input means) of the determination section. The recognition code signals a to c output from the power unit 220 to the third recognition code output unit 240 are input, respectively, and the output select control unit 120 expands based on the input recognition code signals a to c. The type of the electric circuit mounted on the boards 200A to 200G is determined, and in accordance with the type of the electric circuit mounted on the extension boards 200A to 200G determined by the added input determination unit in the CPU as the main control means. The various programs may be automatically executed. As the input determination unit provided separately from the output select control unit 120 as described above, for example, a general-purpose input port built in the CPU can be used.

  By configuring as in the other embodiment described above, for example, the expansion board 200B is coupled to the motherboard 100, and the currency ROM stored and managed in the storage unit of the CPU is stored in the flash ROM 350 mounted on the expansion board 200B. When the operation of downloading the identification log data, which is the result of performing the above, is performed by the CPU recognizing the coupling state of the expansion board 200B, the download operation program can be executed safely and reliably. Further, for example, even when an extension board other than the extension board 200B is mistakenly joined due to an operator's mistake or nothing is joined to the extension boards 200A to 200G, the CPU can join the extension boards 200A to 200G. Since the status is recognizable, it is possible to perform a control process for stopping the program execution of the download work and displaying guidance for prompting the worker to join the expansion board 200B on a display unit such as a liquid crystal display. Therefore, it becomes possible to prevent work mistakes and secondary failures thereof, and as a result, it is possible to further improve the reliability.

  In the above-described embodiment, the case of seven types of expansion boards 200A to 200G each mounted with a different electric circuit has been described. However, the present invention is not limited to this, and the types of expansion boards may be reduced. For example, when six types of expansion boards are used, the above-described coupling dedicated control unit 130G mounted on the mother board 100 may be omitted. Similarly, when there are five or fewer types of expansion boards, the coupling dedicated control unit 130F is similarly used. , 130E, and 130D may be deleted as appropriate. On the other hand, when the number of extension boards is eight or more, the recognition code output unit is added as appropriate, the input system and the output system of the decoder 400 used in the output select control unit 120 are added, and this extension is further added. A coupling-dedicated control unit and an output delay control unit may be added to the output system.

Further, the case where the first recognition code output unit 220 to the third recognition code output unit 240 are provided as the recognition code output unit has been described. However, in the case where N recognition code output units are provided, the output select control unit 120 is the maximum. (2 ^N −1) types of select output signals can be output, and similarly, it is possible to provide a maximum of (2 ^N −1) coupling dedicated control units that are output destinations of select output signals. Automatic switching of the circuit can be realized by (2 ^N −1). In such a configuration, if the gate circuit 180 (see FIG. 1) is configured by, for example, a PLD (programmable logic device), the logic circuit can be appropriately programmed and written at the time of circuit design. A gate array circuit can be easily realized.

  When N recognition code output units are provided, the recognition code signal is output from N signal lines for inputting the recognition code signal to the motherboard 100 when the motherboard 100 and the expansion board 200X are coupled. After being input to the select control unit 120, it can be used as a bidirectional input / output signal line that can be used for the purpose of transmitting a combined delay output signal from the motherboard 100 to the expansion board 200X.

  In the above-described embodiment, the pin assignments of the expansion slot 110 and the expansion slot 210 have been described by assigning the numbers 1 to 7 for the sake of convenience. However, this pin assignment is an example, and is not limited to this pin assignment. Absent.

It is a block diagram which shows the control circuit which performs the automatic recognition of the expansion board which concerns on the money processor of embodiment of this invention. It is a block diagram of the circuit only for coupling | bonding of the A type expansion board in embodiment of this invention. It is a block diagram of the circuit only for coupling | bonding of the B type expansion board in embodiment of this invention. It is a block diagram of the output select control part in embodiment of this invention. It is a block diagram of the joint exclusive control part for A type expansion boards in an embodiment of the invention. It is a block diagram of the joint exclusive control part for B type expansion boards in an embodiment of the invention. It is a block diagram of the output delay control part in embodiment of this invention. It is a timing chart which shows operation | movement of the output delay control part in embodiment of this invention.

Explanation of symbols

100 Motherboard 200A Expansion board 220 First recognition code output unit (recognition code output means)
230 2nd recognition code output part (recognition code output means)
240 3rd recognition code output part (recognition code output means)
120a, 120b, 120c Input side terminal (input means)
120 output select control unit (input determination means)
130A-130G Coupling dedicated control unit (joining means)
300 ROM (electric circuit)
350 Flash ROM (electric circuit)
220S, 230S, 240S Recognition code signal line (input / output signal line)

Claims (3)

A control circuit for automatically recognizing an expansion board coupled to a mother board constituting a money handling machine,
The extension board comprises a recognition code output means for outputting a recognition code for specifying the type of electric circuit mounted on the extension board,
The motherboard includes an input unit for inputting the recognition code, an input determination unit for determining a type of an electric circuit mounted on the expansion board based on the recognition code input to the input unit, and the expansion A plurality of coupling means provided for each type of the expansion board for performing coupling control with an electric circuit mounted on the board, and an output delay means for delaying the output of the coupling means ,
The recognition code output means of the expansion board outputs a recognition code when the expansion board is coupled to the motherboard,
Wherein the input determination means, when the identification code from the ID code output means to the input means is input, have line automatic recognition of the extended substrate by switching the coupling means in accordance with the identification code is activated,
The control circuit characterized in that the recognition code output means and the coupling means are connected by a single input / output signal line which can be bidirectional .   The control circuit according to claim 1, wherein the electric circuit mounted on the extension board is an electric circuit for uploading money identification processing data or downloading identification log data. The mother board has main control means for executing various programs related to the operation function of the expansion board, and second input means for inputting the recognition code output from the recognition code output means, and inputs to the second input means. Second input determination means for determining the type of the electric circuit mounted on the expansion board based on the recognized code,
It said main control unit, a control circuit according to claim 1 or 2, characterized in that executes a program corresponding to the determination result of the second input determination unit.

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