Note: Descriptions are shown in the official language in which they were submitted.
CA 02233646 1998-04-01
DESCRIPTION
BILL VALIDATOR OF MASTER-SLAVE TYPE AND METHOD FOR
DOWNLOAD OF VALIDATOR
Technical Field
This invention relates to a bill validator, in particular to a method
for download of a validator and a bill validator of master-slave type having
a memory in which software control program can easily be updated.
Background Art
Bill validators of many types have been used for vending machines,
dispensers, ticket vending machines or money exchangers to discriminate
authenticity of bills inserted therein. A typical bill validator includes a
conveyer for transporting a bill inserted from an inlet to an outlet along a
passageway formed in the validator; sensors positioned in vicinity of the
passageway for detecting magnetic or optical features of the bill during
transportation of the bill; a discriminating circuit for receiving signals
from the sensors and deciding whether the bill is genuine or false; and a
stacker for storing bills which are decided genuine by the discriminating
circuit and forwarded by the conveyer.
During transportation of the bill toward the outlet by the conveyer,
the sensors detect optical or magnetic features of the bill and forward
outputs to the discriminating circuit which then compares the detected
optical or magnetic features with predetermined patterns stored in the
validator. When they are coincident, the discriminating circuit decides
that the bill is genuine, and subsequently the bill is continuously
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transported by the conveyer through the outlet to the stacker. Adversely,
when they are incoincident, the bill is returned to the inlet by driving the
conveyer in the reverse direction.
A current bill validator utilizes a discriminating circuit of a micro-
computer which includes software control program for effectively
validating genuine or false bill according to the electric signals from the
sensors. The microcomputer also contains software control program for
controlling drive of the conveyer to decide whether the bill is transported
to the stacker or returned to the inlet. The software control program also
controls a stacking operation of the genuine bill in the stacker.
To install the software control program in the microcomputer of the
bill validator, it is connected with an external computer such as a personal
computer including necessary software control program. Then, the bill
validator is switched to a slave mode, and an operating program is carried
out in the external computer switched to a master mode. Subsequently,
an indication "DOWNLOADING" is selected from menu on display of the
external computer so that files of the control program are electrically
forwarded to and installed in the bill validator. After the installation of
the control program, the bill validator is electrically disconnected from the
external computer, and then another bill validator is connected to the
computer for next installation of the control program.
In this way, the prior art installing operation for writing software
control program in bill validators requires a specified personal computer or
dedicated hardware for downloading. Also, when software control
program are updated or upgraded in bill validators of the field, a plurality
of personal computers must be prepared and transported to the field,
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thercby resulting in troublesome downloading operation. Alternatively,
it is possible to write new control program for bill validation in a PROM
(Programmable Read Only Memory) which is then substituted for old one
in a bill validator. However, in this case, the old ROM must be removed
from a printed board of the bill validator to exchange the old ROM for new
one which then must be mounted on the printed board. This operation is
complicated and time-consuming. Moreover, in some cases, a new ROM is
irretrievably broken down because it is electrically or mechanically
damaged by contact with a some object during this operation.
An object of the present invention is to provide a method for
download of a validator and a bill validator which can easily perform
download operation of updating software control program in a writable
memory for update.
Another object of the invention is to provide a method for download
of a bill validator and a bill validator capable of updating software control
program without any specified personal computer or dedicated hardware
for download.
Still another object of the invention is to provide a method for
download of a bill validator and a bill validator used for master-slave
system for download of software control program to be installed therein.
A further object of the invention is to provide a method for
download of a bill validator and a bill validator which can easily be
converted into a master.
Disclosure of Invention
The bill validator (10) of master-slave type according to the present
invention includes a frame (28); a passageway (13) provided within the
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frame (28); conveyer means (16) for transporting a bill inserted from an
inlet (12) through the passageway (13) to an outlet (14) along the
passageway (13); sensor means (20 to 26) positioned in vicinity of the
passageway (13) for detecting magnetic or optical feature of the bill; and
discriminating means (40) for deciding based on signals from the sensor
means (20 to 26) whether the bill is genuine or false to control drive of the
conveyer means (16). The bill validator (10) comprises a download input
terminal (46) and a download output terminal (44) provided in the
discriminating means (40) which include download information; master
mode setting means (48) for switching the discriminating means (40) from
a validating mode to a master mode; slave mode setting means (49) for
switching the discriminating means (40) from the validating mode to a
slave mode; and a writable memory (43) provided in the discriminating
means (40) to write therein the download information including a
download program. The discriminating means (40) is switched from the
validating mode to the master mode by operation of the master mode
setting means (48) to forward the download information to a slave
discriminating means (40) according to the download program. The
slave discriminating means (40) is switched from validating mode to a
slave mode by operation of the slave mode setting means (49) so that the
download information from the master discriminating means (40) is
written in the writable memory (43) of the slave discriminating means (40)
via the download output terminal (44) of the master discriminating means
(40) and the download input terminal (46) of the slave discriminating
means (40).
In accordance with the present invention, the download operation
.
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of the invention does not require any specified personal computer or
dedicated hardware for downloading. Therefore, the download operation
for bill validators in particular in the field is very easy in a timesaving way.Also, it is very easy to provide a master validator because the validator can
be utilized as either of a master and a slave for download operation.
In an embodiment of the present invention, the download
information starts to be written in the slave discriminating means (40)
when trigger means (47) of the master discriminating means (40) is
switched to a download mode after the slave discriminating means (40) is
switched to the slave mode. The discriminating means (40) includes a
CPU mask ROM (45) for storing slave mode setting program, and the
writable memory (43) comprises a flash memory or an EPROM for storing
the download program. The master mode setting means (48), slave mode
setting means (49) and trigger means (47) respectively include a master
mode switch (48), download mode switch (49) and trigger switch (47). The
writable memory (43) includes a flash memory or an EPROM for storing
necessary information of download program for download and software
control programs for validating bills and driving the conveyer. A ROM
(45) is provided which includes a writable or memorizable and calculable
or computable CPU mask ROM or hybrid IC for storing and executing a
slave mode setting program.
The method for download of a validator according to the present
invention comprises the steps of: electrically connecting download outpu
terminal (44) of a discriminating circuit (40) of a master validator with
download input terminal (46) of a discriminating circuit (40) of a slave
validator; switching the discriminating circuit (40) of the master validator
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to a master mode and also switching the discriminating circuit (40) of the
slave validator to a slave mode; reading out download information
including a download program from a writable memory (43) of the master
discriminating circuit (40) to operate the download program; forwarding
the download program from the master writable memory (43) through the
master download output terminal (44) and slave download input terminal
(46) to a ROM (45) of the slave discriminating circuit (40); and writing the
download information in the slave writable memory (43). The
discriminating circuit (40) of the master validator is switched to a master
mode by operating a master mode switch (48), and the discriminating
circuit (40) of the slave validator is switched to a slave mode by operating a
slave mode switch (49). A trigger switch (47) may be operated to start the
download operation.
Brief Description of Drawings
Fig. 1 is a sectional view of a bill validator according to the present
invention;
Fig. 2 is a plan view of the bill validator removing an upper frame
of Fig. l;
Fig. 3 is an electric circuit of the bill validator of Fig. 1;
Fig. 4 is a block chart indicating two discriminating circuits
connected with each other in master and slave relation for download
operation; and
Fig. 5 is a flow chart indicating an operating sequence for download
operation in the discriminating circuits shown in Fig. 4.
Best Mode for Carrying Out the Invention
An embodiment of a bill validator according to the present
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invention is described hereinafter in connection with Figs. 1 to 5 of the
attached drawings.
As shown in Figs. 1 and 2, a bill validator 10 of the present
invention comprises a magnetic sensor 20 such as a magnetic head or Hall
IC mounted in vicinity of the passageway 13, a pusher roller 27 for urging
an inserted bill or document toward the magnetic sensor 20, and optical
sensors 21 to 26 such as photocouplers each including a light emitting
diode (LED) and a light receiving transistor (LRT). The magnetic sensor
20 detects ferrous ink printed in predetermined positions of bills. The
inlet sensors 21 to 23 are positioned adjacent to the inlet 12 to detect
permeation pattern of infrared ray through bills. For example, the inlet
sensor 22 of Fig. 2 is composed of a LED 22a secured to a lower frame 30 of
the validator 10 and a LRT 22b secured to an upper frame 31. The
magnetic sensor 20 and the optical sensors 21 to 26 compose validating
sensors.
The upper frame 31 is pivotally attached to the lower frame 30 by a
shaft (not shown) to open the upper frame 31 and easily remove jammed
bills within the passageway 13. The lower frame 30 and the upper frame
31 compose a general frame 28 to define the passageway 13 between the
lower frame 30 and upper frame 31 as shown in Fig. 1. Each of the
optical sensors 24 and 25 has a structure of parallel arrangement of a LED
and a LRT in a case, and respectively receives the light beam reflected on
the front and back surfaces of bills. The optical sensor 26 has a LED 26a
secured to the lower frame 30 and a LRT 26b secured to the upper frame 31
to detect a position and passage of a bill by permeation pattern of infrared
ray through a bill.
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A conveyer 16 includes a pair of conveyer belts 15 wound around a
pair of drive pulleys 17. Rollers 32, 33 are rotatably mounted on the
upper frame 31 to urge the bill or document toward the conveyer belts 15
wound around the drive pulleys 17 attached to the lower frame 30. A
lever 34 is rotatably mounted by a shaft 35 to the lower frame 30 at the
rear of the optical sensor 25 to detect passage of the bill or document.
One end of the lever 34 is connected with a tension spring 36 attached to
the lower frame 30 so that the other end of the lever 34 is protruded within
the passageway 13. Traveling along the passageway 13, the bill or
document forces the other end of the lever 34 to rotate the lever 34 in a
clockwise direction against resilient force of the spring 36 so that the bill
or document can override the lever 34. A lever sensor 37 of a
photocoupler optically detects one end of the rotated lever 34 when the bill
passes the lever 34. As the passageway 13 is communicated at the outlet
14 with an extended passageway formed in a stacker 11 mounted on the
bill validator 10, the bill is discharged from the outlet 14 by the conveyer
16 and further transported along the extended passageway.
As shown in Fig. 3, the magnetic sensor 20, the optical sensors 21
to 26, and lever sensor 37 are connected via an amplifier circuit 39 with
corresponding input termin~l.s of the discriminating circuit 40 which has
output termin~l~q respectively connected with a motor control circuit 41 of
the conveyer 16. The motor control circuit 41 produces outputs to
energize a conveyer motor 42 which is drivingly connected with the drive
pulleys 17.
The discriminating circuit 40 is composed of a one-chip-
microcomputer or a programmed central processing unit (CPU), discrete
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ICs or circuits which can be switched to any one of a validating mode
wherein the discriminating circuit 40 can validate a bill based on outputs
of the validator sensor, a master mode wherein the discriminating circuit
40 is in a readout condition, a slave mode wherein the discriminating
circuit 40 is in a writable condition and a download mode wherein the
download operation can be performed. Not shown but, the
discriminating circuit 40 includes an optical detector for receiving outputs
of the optical sensor 21 to 26 to scan optical patterns on a surface of the
bill; an optical pattern memory for storing predetermined optical patterns;
and a first comparator for detecting whether there is a coincidence
between the outputs from the optical detector and the optical patterns
stored in the optical pattern memory; a ferrous detector for receiving
outputs of the magnetic sensor 20 to detect ferrous component of ink
printed in predetermined positions of the bill; a magnetic pattern memory
for storing predetermined magnetic patterns; and a second comparator for
detecting whether there is a coincidence between the outputs from the
ferrous detector and the magnetic patterns stored in the magnetic pattern
memory. If the first and second comparators detect coincidences between
the outputs from the optical detector and optical patterns and between the
outputs from the ferrous detector and magnetic patterns, the
discriminating circuit 40 generates a coincident signal to supply a drive
signal to the motor control circuit 41 of the conveyer 16 in order to
transport the bill to the outlet 14. In this way, the discriminating circuit
40 of the validating mode decides whether the document inserted into the
validator 10 is a genuine or false bill in response to output signals from the
validating sensors, and generates outputs to drive the conveyer 16.
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.
As shown in Fig. 3, the discriminating circuit 40 comprises a
writable memory 43 and a ROM 45 connected with the writable memory 43.
The writable memory 43 includes a flash memory or an EPROM for storing
necessary information of software control program and a download
program. The ROM 45 includes a writable or memorizable and calculable
or computable CPU mask ROM or hybrid IC for storing and executing a
slave mode setting program. The ROM 45 has a plurality of outputs
separately connected with the writable memory 43, a download output
terminal 44, a download input terminal 46, a trigger switch 47 for
switching the discriminating circuit 40 to the download mode wherein the
download operation can be performed, a master mode switch (master mode
setting means) 48 for switching the discriminating circuit 40 to the master
mode wherein the discriminating circuit 40 is in a readout condition, and a
slave mode switch (slave mode setting means) 49 for switching the
discriminating circuit 40 in accordance with the slave mode setting
program of the ROM 45 to a slave mode wherein the discriminating circuit
40 is in a writable condition. Without operation of these master mode
switch 48 and slave mode switch 49, the ROM 45 is usually in the
validating mode wherein the discriminating circuit 40 can validate a bill
based on outputs of the validator sensor. Accordingly, the trigger switch
47 switches the ROM 45 of the discriminating circuit 40 between one of
modes for example the validating mode and the download mode wherein
the download operation can be performed. In the present invention,
provision of the trigger switch 47 is optional. The master mode switch
48 is operated to switch the discriminating circuit 40 between the
validating mode or another mode and master mode wherein the
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discriminating circuit 40 is in a readout condition. The slave mode switch
49 is operated to switch the discriminating circuit 40 between the
validating mode or another mode and a download mode wherein the
discriminating circuit 40 is in a writable condition.
The discriminating circuit 40 of master side is switched to the
master mode by operation of the master mode switch 48 to then forward
after operation of the trigger switch 47 necessary information including
download programs to a slave discriminating circuit 40 of slave side
switched to the download mode by operation of the slave mode switch 49 in
accordance with the download program. The download program is
executed in the slave discriminating circuit 40 which writes in the writable
memory 43 download information forwarded from the discriminating
circuit 40 of master side through the download input terminal 46. The
download information includes download program and control programs
for validating bills and driving the conveyer 16.
New programs are previously installed in the writable memory 43
of master side for later download operation on the slave discriminating
circuit 40, utili7.ing a personal computer connected with the master
discriminating circuit 40. Otherwise, new programs are installed in a
new EPROM for the writable memory 43 which is then mounted on a
circuit board of the discriminating circuit 40. In other words, the master
discriminating circuit 40 already includes new programs because the
download operation is completed thereon. In the instant invention, the
discriminating circuit 40 of master side in the validator 10 is connected at
the download output terminal 44 with the download input terminal 46 of
the slave discriminating circuit 40 so that the download operation is
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performed to write new programs in the latter discriminating circuit 40.
Therefore, the latter discriminating circuit 40 of slave side can be used as a
master side after completion of the download operation. The writable
memory 43 and ROM 45 of the discriminating circuit 40 of slave side are
same as those of the discriminating circuit 40 of master side.
Specifically, in actual download operation, as shown in Fig. 4, the
download output terminal 44 of the discriminating circuit 40 of master side
is connected with the download input terminal 46 of the discriminating
circuit 40 of slave side so that a validator 10 as a master can be connected
with another validator 10 as a slave through a communication line
including the download output terminal 44 and download input terminal
46. If this is a first time of download operation, in lieu of the
discriminating circuit 40 of master side, download output terminal of an
exterior CPU board may be connected with the download input terminal 46
of slave side. When decision is made on download operation after the
master and slave are connected, the master mode switch 48 of the master
discriminating circuit 40 is turned ON to switch it to the master mode.
Simultaneously, the slave mode switch 49 in the slave discriminating
circuit 40 is turned ON to switch it to the slave mode. At the same time,
the trigger switch 47 of master side is turned ON, the download
information is read out from the writable memory 43 of master side in
accordance with the download programs stored in the master
discriminating circuit 40 so that the download information is transmitted
through the master download output terminal 44 and slave download
input terminal 46 to the slave discriminating circuit 40. Subsequently,
the download information is written in the slave writable memory 43 in
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accordance with the download program of the master discriminating
circuit 40. In this case, all information including the download program
is downloaded from the master to the slave and stored in the slave writable
memory 43 through the master download output terminal 44 and slave
download input terminal 46 SO that the slave validator 10 can be utilized
later as a master. Also, upon download operation, the information stored
in the slave writable memory 43 iS deleted or erased, and new information
is stored in the slave writable memory 43 by installation of new software
control program in the slave writable memory 43 through the slave ROM
45.
In use, the discriminating circuit 40 iS operated in accordance with
an operating sequence shown in a flow chart of Fig. 5.
A processing moves from Step 50 "START" to Step 51, the
discriminating circuit 40 decides whether it is in the validating mode or
master mode. When the discriminating circuit 40 decides that it is in the
validating mode, the process advances in Step 52 where the discriminating
circuit 40 determines whether the inlet sensors 21 to 23 detect a bill or
document inserted into the inlet 12. When the discriminating circuit 40
does not determine the detection of the bill by the inlet sensors 21 to 23,
the process is returned to Step 50. When the bill is inserted into the inlet
12, the inlet sensors 21 to 23 generates detection signals to the
discriminating circuit 40. Then, the discriminating circuit 40 decides the
detection of the bill, and supplies the motor control circuit 41 with drive
signals to rotate the conveyer motor 42 in the forward direction as shown
in Step 53 of Fig. 5. Thus, the drive pulleys 17 of the conveyer means 16
are driven in the clockwise direction in Fig. 1 so that the conveyer belt 15
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14
is driven and the bill is moved toward the magnetic sensor 20.
Next, in Step 54, the discriminating circuit 40 decides whether or
not the magnetic sensor 20 detects the ferrous component on the bill.
When the magnetic sensor 20 detects the ferrous component on the bill, the
discriminating circuit 40 determines that the paper inserted into the inlet
14 is a bill. Then, in step 55, the discriminating circuit 40 receives
outputs as data of the inserted bill from the magnetic sensor 20 and inlet
sensors 21 to 23. The magnetic sensor 20 forwards a plurality of signals
derived from the ferrous material of the bill to the ferrous detector of the
discriminating circuit 40 which then stores these data.
Subsequently, in Step 58, the discriminating circuit 40 ceases drive
signals to the conveyer motor 42 to stop operation of the conveyer motor 42,
and the first and second comparators of the discriminating circuit 40
compares the received optical and magnetic detection signals with the
predetermined optical and magnetic patterns stored in the optical and
magnetic pattern memories to determine whether or not these patters are
coincident with the detection signals and thereby to determine whether
the inserted bill is genuine or not (Step 57). After detection of the
genuine bill in Step 57, the discriminating circuit 40 also decides a kind of
bills or money amount from the detected magnetic pattern in Step 58.
In Step 58, the discriminating circuit 40 determines whether or
not the bill is a predetermined one of money kinds. When the bill is one
of the predetermined money kinds, the conveyer motor 42 is further driven
in the forward direction in Step 59. When the bill passes through the
lever 34, the lever sensor 37 detects the end of the rotated lever 34 and in
Step 60 generates an output which the discriminating circuit 40 receives.
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After the bill has passed through the lever 34, the discriminating circuit 40
ceases outputs to stop operation of the conveyer motor 42 from Step 61 to
71.
When ferrous component is not detected from the inserted bill in
Step 54, when the inserted bill is not genuine in Step 57 or when the bill is
not any one of the predetermined money kinds in Step 58, the processing is
moved to Step 62 wherein the discriminating circuit 40 drives the conveyer
motor 42 in the reverse direction, and the bill is returned to the inlet 14.
When the inlet sensors 21 to 23 detect nothing in Step 63, operation of the
conveyer motor 42 is stopped in Step 61, and then the processing moves to
Step 71.
In Step 51, when the discriminating circuit 40 decides that it is not
in the validating mode, the processing moves to Step 64 where it judges
whether it is in the master mode. If it is not in the master mode, the
processing is returned to Step 50. If the master discriminating circuit 40
decides the master mode in Step 64 by the master mode switch 48 turned
to ON, in Step 65, the slave mode switch 49 is turned ON to switch the
slave discriminating circuit 40 to the slave mode. After that, in Step 66,
the trigger switch 47 of the master is turned ON so that the download
program is operated in the writable memory 43 (Step 67). Successively,
in Step 68, the master discriminating circuit 40 forwards the download
information from the master writable memory 43 through the master
download output terminal 44 and slave download input terminal 46 to the
ROM 45 of the slave discriminating circuit 40. Then, the download
information is downloaded on and written in the slave writable memory 43
in Step 69. Thus, the download operation is finished (Step 70).
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16
The mode of the present invention may be varied apart from the
foregoing embodiment. The trigger switch 47, master mode switch 48 and
slave mode switch 49 may be sensors for detecting some signals or
electronic means provided by programmed control.
Industrial Applicability
Accordingly, the present invention is advantageous in various
aspects. Firstly, the download operation of the invention does not require
any specified personal computer or dedicated hardware for downloading.
Therefore, the download operation for bill validators in particular in the
field is very easy in a timesaving way. Secondly, it is very easy to provide
a master validator because the validator can be utilized as either of a
master and a slave for download operation. Also, a master validator can
be used to convert a plurality of slave validators into masters for self-
duplication of software control program. To this end, the master
validator can be simultaneously or independently connected with a
plurality of the slave validators. In other words, the validators can
easily be updated or upgraded for software control program by the
download operation to modify or substitute the operational sequence or
modes.
