JP3295829B2 - POS system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a POS system.
Particularly, the present invention relates to a price inquiry process using a PLU (Price Look Up) memory in a POS (Point Of Sales) system.

[0002]

2. Description of the Related Art Conventionally, in a price inquiry process, a POS
When a parity error occurs in the inquiry data read from the PLU memory provided in the POS terminal device in the system, unless the POS system is restarted,
The PLU memory of the POS terminal cannot be used.

In this case, in order to execute the price inquiry processing without executing the restart processing of the POS system, a PC (POS Controller) for controlling the POS terminal device every time the inquiry data in which the parity error has occurred is searched. )
Inquiry data is read out from the PLU memory via the serial bus and price inquiry processing is continued.

[0004]

In the above-described conventional price inquiry processing, when a parity error occurs in the inquiry data read from the PLU memory of the POS terminal, the POS processing is performed.
When executing the system restart processing, it takes a lot of time to suspend the processing and execute the POS system restart processing.

When a parity error occurs in the inquiry data read from the PLU memory of the POS terminal and the inquiry processing is continued by reading the inquiry data from the PLU memory in the PC, a parity error occurs. Every time the inquiry data is searched, the search in the PLU memory in the PC must be performed, so that it takes time to read the inquiry data.

Therefore, an object of the present invention is to solve the above-mentioned problems and to continue the price inquiry processing without executing the restart processing of the POS system even if a parity error occurs in the inquiry data read from the PLU memory. It is an object of the present invention to provide a POS system that can reduce the read time of inquiry data after a parity error has occurred in the inquiry data.

[0007]

A POS system according to the present invention comprises a host device and a POS connected to the host device.
A POS system comprising a terminal device, an execution unit for executing a price inquiry process, a storage unit for storing inquiry data used for the price inquiry process, and presence or absence of an error in the inquiry data read from the storage unit. Detecting means for detecting the error; a search request sending means for sending a search request for the inquiry data to the host device when the detecting means detects the error; and a search request sent from the host device in response to the search request. The POS terminal device includes: a supply unit that supplies the inquiry data to the execution unit; and a writing unit that writes the inquiry data sent from the higher-level device to the storage unit in response to the search request. .

In another POS system according to the present invention, in addition to the above configuration, the storage means for storing the same inquiry data as the inquiry data stored in the storage means, and the search request transmission means have transmitted the same. The host device includes a search unit that searches the inquiry data of the storage unit based on a search request, and an inquiry data sending unit that sends the inquiry data searched by the search unit to the POS terminal device.

In another POS system according to the present invention, in addition to the above-described configuration, when an error is detected in the inquiry data sent from the higher-level device, writing of the inquiry data into the storage means is suppressed. And a means for notifying the execution means of an error when an error is detected in the inquiry data sent from the host device, in the POS terminal device.

[0010]

When a parity error is detected in the inquiry data read from the PLU memory, a search request is output from the parity error check control unit to the POS controller. In response to the search request, the search data read from the PLU memory in the POS controller is supplied to the requesting application program.
Overwrites the LU memory.

As a result, even if a parity error occurs in the inquiry data read from the PLU memory, the price inquiry processing can be continued without executing the POS system restart processing, and a parity error occurs in the inquiry data. It is possible to reduce the time required for reading the inquiry data later.

[0012]

Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of one embodiment of the present invention. In the figure, a POS terminal device 1 is connected to a POS controller (PC) 3 via a serial bus 100, and is connected to a PLU memory 2 provided corresponding to the own device.

The POS terminal 1 includes an application program 10, a data search unit 11, a read area 12, a parity error check control unit 13, a return area 14, a search request control unit 15, and a SIF (Ser).
ial Interface) control section 16.

The POS controller 3 has a PLU memory 30
, A SIF control unit 31, a search request receiving unit 32, and a search data sending unit 33.

The application program 10 is a POS
It operates on the terminal device 1 and includes a price inquiry process. When a price inquiry request from the application program 10 is output, the data search unit 11 searches the PLU memory 2 for inquiry data corresponding to the price inquiry request.

The read area 12 stores search data read from the PLU memory 2 in the data search by the data search unit 11 and search data input from the POS controller 3 via the SIF control unit 16 and the search request control unit 15. Hold each.

The parity error check control unit 13 performs a parity error check on the search data held in the read area 12, and if no parity error is detected, returns the search data from the read area 12 to the return area 1.
4 The parity error check control unit 1
When the parity error is detected, 3 outputs a search request for inquiry data corresponding to the search data to the search request control unit 15.

The return area 14 holds search data from the parity error check control unit 13, and the search data is P
If the data is read from the LU memory 2, the search data is passed only to the application program 10. If the search data is data from the POS controller 3, the search data is passed to the PLU memory 2 and the application program 10.

When the search request controller 15 receives a search request from the parity error check controller 13, it sends it to the POS controller 3 via the SIF controller 16 and the serial bus 100. When search data is sent from the POS controller 3 in response to the search request, the search request control unit 15 sends the search data to the read area 12.

The PLU memory 30 of the POS controller 3
Have the same inquiry data stored in the PLU memory 2. The search request receiving unit 32 receives the P via the SIF control unit 31
When a search request is sent from the OS terminal device 1, the query data in the PLU memory 30 is searched based on the search request.

The search data sending unit 33 is a search request receiving unit 3
The search data read from the PLU memory 30 in the data search by the SIF 2 and the serial bus 100
Is transmitted to the POS terminal device 1 that has output the search request.

FIG. 2 is a flowchart showing the operation of one embodiment of the present invention. The operation of the embodiment of the present invention will be described with reference to FIGS.

When a price inquiry request is issued from the application program 10 (step S1 in FIG. 2), the data search unit 11 sends the inquiry data corresponding to the price inquiry request to P.
A search is made from the LU memory 2 (step S2 in FIG. 2).

When the data retrieval unit 11 retrieves the relevant inquiry data, it reads the inquiry data from the PLU memory 2 into the read area 12. At this time, the parity error check control unit 13 performs a parity error check on the inquiry data held in the read area 12 (Step S3 in FIG. 2), and returns the inquiry data from the read area 12 if no parity error is detected. It is set in the area 14 (step S7 in FIG. 2), and the inquiry data is passed to the requesting application program 10 (step S7 in FIG. 2).
9).

The parity error check control unit 13
Detects a parity error, outputs a search request for the inquiry data to the search request control unit 15, and sends the search request from the search request control unit 15 to the POS controller 3 via the SIF control unit 16 and the serial bus 100. .

Search request receiving unit 3 of POS controller 3
When a search request is sent from the POS terminal device 1 via the SIF control unit 31, a PL is sent based on the search request.
Search the inquiry data in the U memory 30 (step S in FIG. 2)
4).

In the data search by the search request receiving unit 32, P
The search data read from the LU memory 30 is sent from the search data sending unit 33 to the SIF control unit 31 and the serial bus 10.
0 to the POS terminal device 1 that has output the search request. The search request control unit 15 of the POS terminal 1
When search data is sent from the OS controller 3,
The search data is sent to the read area 12.

At this time, the parity error check control unit 13 performs a parity error check on the search data held in the read area 12 (step S2 in FIG. 2).
5), if no parity error is detected, read area 1
2 is overwritten on the position of the inquiry data where the parity error has occurred in the PLU memory 2 via the return area 14 (step S6 in FIG. 2), and the search data is set in the return area 14 (FIG. 2). Step S
7), the search data is passed to the requesting application program 10 (step S9 in FIG. 2).

The parity error check control unit 13
When the parity error is detected, the error information is set in the return area 14 (Step S8 in FIG. 2), and the error information is passed to the requesting application program 10 (Step S9 in FIG. 2). At the same time, the parity error check control unit 13 sends the error information from the search request control unit 15 to the PIF via the SIF control unit 16 and the serial bus 100.
Send it to the OS controller 3.

As a result, if no parity error is detected in the search data read from the PLU memory 30 in the POS controller 3, the search data is passed to the application program 10 and overwritten in the PLU memory 2, so that When a price inquiry for the same product occurs, the POS terminal device 1 can continue the price inquiry process using the inquiry data stored in the PLU 2.

In the above description, the POS controller 3
Has been described in connection with one POS terminal device 1, but the same processing can be performed in the case where a plurality of POS terminal devices are connected to the POS controller 3.

As described above, when a parity error is detected in the inquiry data read from the PLU memory 2, the parity error check control unit 13 sends the POS controller 3
And outputs the search data read from the PLU memory 30 in response to the search request to the application program 10 that executes the price inquiry process, and overwrites the PLU memory 2 with the search data. , Even if a parity error occurs in the inquiry data read from the PLU memory 2, the price inquiry processing can be continued without executing the restart processing of the POS system, and the inquiry after the occurrence of the parity error in the inquiry data Data read time can be reduced.

[0034]

As described above, according to the present invention, P
When an error of the inquiry data read from the PLU memory of the OS terminal device is detected, a search request for the inquiry data is sent to the POS controller, and P is sent in response to the search request.
By supplying the inquiry data sent from the OS controller to the application for executing the price inquiry processing, and by writing the inquiry data sent from the host device to the PLU memory in response to the search request, the PL
Even if a parity error occurs in the inquiry data read from the U memory, the price inquiry processing can be continued without executing the POS system restart processing, and the inquiry data after the parity error occurs in the inquiry data Has the effect of reducing the time required for reading.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

FIG. 2 is a flowchart showing the operation of one embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 1 POS terminal device 2, 30 PLU memory 3 POS controller 10 application program 11 data search unit 12 read area 13 parity error check detection unit 14 return area 15 search request control unit 16, 31 SIF control unit 32 search request reception unit 33 search data Sending section

Claims (3)

(57) [Claims] 1. A POS system comprising a host device and a POS terminal device connected to the host device, wherein the POS terminal device executes execution means for executing a price inquiry process; Storage means for storing inquiry data obtained from the storage means, detection means for detecting an error in the inquiry data read from the storage means, and a request for a search for the inquiry data to the host device when the detection means detects the error. Search request sending means for sending the query data, supply means for supplying the query data sent from the higher-level device in response to the search request to the execution means, and search data sent from the higher-order device in response to the search request. Inquiry data
Error in the inquiry data stored in the storage means
Have a writing means for overwriting the detected reference data
And the host device transmits the inquiry data stored in the storage unit.
Storage means for storing the same inquiry data as the search request;
Based on the search request sent from the request sending unit.
Inquiry data search means for searching the inquiry data of the storage means
And the inquiry data searched by the inquiry data search means.
A POS system comprising: an inquiry data transmitting unit that transmits the inquiry data to the POS terminal device . 2. The POS terminal according to claim 2 , wherein
Inquiry data sent from the inquiry data sending means is incorrect.
Is detected, the inquiry data is stored in the storage means.
Means for suppressing overwriting of data, and an error notification to the execution means
And means for performing:
POS system. 3. When the POS terminal detects an error in the inquiry data sent from the inquiry data sending means of the host device, the POS terminal suppresses overwriting of the inquiry data in the storage means. 2. The POS system according to claim 1, further comprising: an execution unit and a unit that notifies the host device of an error.