Computer graphics processing and selective visual display system – Display peripheral interface input device – Cursor mark position control device
Reexamination Certificate
1998-05-29
2001-10-16
Brier, Jeffery (Department: 2672)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Cursor mark position control device
Reexamination Certificate
active
06304248
ABSTRACT:
BACKGROUND THE INVENTION
1. Field of the Invention
The present invention relates to a coordinate input device, a pad used with the coordinate input device and a communication method for the coordinate input device, and particularly relates to a coordinate input device for inputting coordinates pointed to by a pointer displayed on a screen of a personal computer, a pad used with such coordinate input device and a communication method for such coordinate input device.
2. Description of the Related Art
Recently, electronic money is coming into practical use. Accordingly, experiments involving various types of electronic money are being carried out worldwide. Amongst the various types of electronic money, IC card-type electronic money is one of the types of electronic money which is expected to become of greater use in the near future. The IC card-type electronic money is formed of an IC card having various information stored therein and money is deposited and withdrawn based on the information stored in the IC card.
Further, a number of personal computers and data communications using the personal computers is rapidly increasing. Accordingly, when using the IC card-type electronic money, there is plan to connect home personal computers to a bank host computer for depositing and withdrawing money.
However, in order to access the IC card via personal computers, a dedicated IC card reader/writer is required.
FIG. 1
shows a schematic diagram of an IC card-type electronic money system of the related art. In an IC card-type electronic money system
100
, a bank host computer
102
is connected, via a network
101
, to an ATM
104
accessible to an IC card
103
, to an IC card dedicated terminal
105
and to a personal computer (PC) system
107
having an IC card reader/writer
106
connected thereto. Thus, it is possible to deposit and withdraw money using the IC card-type electronic money system
100
.
In the above system
100
, in order to access the IC card
103
from the PC system
107
, there is a need for the IC card reader/writer
106
connected to the PC system
107
.
FIG. 2
is a block diagram showing an IC card reader/writer of the related art. The IC card reader/writer
106
is connected to a personal computer (PC) main body
111
of the PC system
107
. The IC card reader/writer
106
includes an interface
112
for interfacing with buses (ISA, PCI), an MPU
113
executing processes according to commands from the PC main body
111
, a card interface
114
for interfacing with the IC card
103
and a card unit
115
for connecting with the IC card
103
.
The IC card reader/writer
106
accesses the IC card
103
upon receipt of a command from the PC main body
111
and then reads information on the IC card
103
such as the balance of an account.
FIG. 3
is a diagram showing an operation of the IC card reader/writer of the related art. When the power is supplied to the PC main body
111
or an application is started, the PC main body
111
sends an OPEN command to the IC card reader/writer
106
(step S
6
-
1
). When the OPEN command is provided in step S
6
-
1
, the IC card reader/writer
106
detects whether the IC card
103
has been inserted, and if so, the IC card reader/writer
106
returns a response indicating OK (step S
6
-
2
). If not, the IC card reader/writer
106
returns a response indicating NG (step S
6
-
2
).
When the PC main body
111
receives the NG response from the IC card reader/writer
106
, a message is indicated on the display
112
shown in
FIG.1
instructing the insertion of the IC card
103
. When the PC main body
111
receives the OK response from the IC card reader/writer
106
, an ACCESS command produced during the step of processing an application is sent to the IC card reader/writer
106
(step S
6
-
3
).
When the ACCESS command is received in step S
6
-
3
, the IC card reader/writer
106
accesses the IC card
103
and executes a process according to the command supplied from the PC main body
111
(step S
6
-
4
). The IC card
103
executes a process according to the access from the IC card reader/writer
106
and returns a response (step S
6
-
5
).
When the response from the IC card
103
is received in step S
6
-
5
, the IC card reader/writer
106
sends a response to the PC main body
111
, which response corresponds to the response from the IC card
103
(step S
6
-
6
).
The above-described steps S
6
-
3
to S
6
-
6
are repeated so as to read and rewrite information stored in the IC card
103
.
The IC card reader/writer
106
may be attached. to the PC system
107
using a built-in file bay of the PC main body
111
or by externally connecting, for example, a special purpose card to an ISA bus slot and to a PCI bus slot.
However, when attached to the PC system
107
, the IC card reader/writer
106
occupies input/output ports and bus slots of the PC system
107
. Further, by attaching the IC card reader/writer
106
to the built-in file bay, the extensibility of the PC system
107
is reduced.
Also in case where the IC card reader/writer
106
is externally connected to the PC system
107
, the input/output ports and the bus slots are occupied as in the above case. In addition, a space is required around the PC system
107
for the IC card reader/writer
106
to be placed.
Further, in the system described above, the IC card
106
is only accessible when the PC system
107
is operating. Thus, if a user wishes to make a balance inquiry when the PC system
107
has been turned off, there is a need to turn the PC system
107
on only for making a balance inquiry. Therefore, there are problems such as bad operational efficiency.
SUMMARY OF THE INVENTION
Accordingly, it is a general object of the present invention to provide a coordinate input device which can easily introduce an IC card into a personal computer system, a pad used with such a coordinate input device and a communication method for such a coordinate input device.
It is another and more specific object of the present invention to provide a coordinate input device which can input coordinates pointed to by a pointer displayed on a screen of a personal computer, a pad used with such a coordinate input device and a commuication method for such a coordinate input device.
In order to achieve the above objects, a coordinate input device includes coordinate detecting elements for detecting input coordinates, information inputting elements, a communication element for transmitting data of the input coordinates detected by the coordinate detecting elements and information generated by the information inputting elements to a processing device and an IC card access element for allowing an access to an IC card.
In the device described above, an IC card is accessible via a coordinate input device such as a mouse. Therefore, when using a personal computer, it is possible to check and modify the content of the IC card without providing a dedicated IC card reader/writer.
It is still another object of the present invention to provide a coordinate input device which can achieve improved security characteristics.
In order to achieve the above object, the coordinate input device further includes a display element for displaying information thereon.
In the device described above, a display element is provided, so as to make it possible to check the content of the IC card without sending the content of the IC card to the personal computer.
Also, in order to achieve the above object, the IC card access element controls an access to the IC card according to information input by the information inputting elements.
In the device described above, an input key element is provided, so as to make it possible to modify the content of the IC card without sending the content of the IC card to the personal computer.
Also, in order to achieve the above object, the IC card access element compares data input by the information inputting elements and data read from the IC card, so as to allow an access to the IC card when the input data and the read data match.
In the device described above, an ID is pre-stored
Hirashima Takeo
Niwata Tsuyoshi
Shiobara Tomomi
Armstrong Westerman Hattori McLeland & Naughton LLP
Brier Jeffery
Fujitsu Limited
Yang Ryan
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