JPH0816666A - Radio order management system - Google Patents

Abstract

PURPOSE:To shorten the time to be occupied by radio from the line connection request of a handy terminal to the real transmission end of order information. CONSTITUTION:A host device 60 is provided with a first radio base station 40 for receiving the order information transmitted from respective handy terminals 70a to 70n and responding to it while using a first radio channel ch1 and a second radio base station 80 for transmitting stockout information to the respective handy terminals 70a to 70n while using a second radio channel ch2 not to be interfered with the first radio channel ch1. The respective handy terminals 70a to 70n transmit the registered order information to the host device 60 by using the first radio channel ch1. On the other hand, those terminals receive the stockout information transmitted from the host device 60 while using the second radio channel ch2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless order management system used in restaurants such as family restaurants and fast food restaurants.

[0002]

2. Description of the Related Art FIG. 14 shows a schematic diagram of a conventional wireless order management system for family restaurants. This system is an electronic cash register (E
CR) 1, customer printer (CP) 2 for printing and issuing order slips, kitchen printer (KP) 3 for printing and issuing cooking instruction sheets, wireless base station 4, etc. It is composed of a connected host device 6 and a plurality of handy terminals 7a, 7b, ..., 7n capable of wireless communication with the host device 6.

The electronic cash register 1 is installed at a checkout place, the customer printer 2 is installed at a waiting place for a customer service person called a waiter or a waitress, and the kitchen printer 3 is installed in a kitchen. The wireless base station 4 is installed on the ceiling of a passenger seat or the like. On the other hand, each of the handy terminals 7a, 7b, ... 7n is carried by a person in charge of customer service.

However, when the customer service representative receives an order for the menu product from the customer at the audience seat, the handy terminals 7a to 7a.
The contents of the order are registered by operating the keyboard provided in n. Then, the order information corresponding to the registered order contents is transmitted from the handy terminals 7a to 7n to the wireless base station 4.
To the electronic cash register 1,
Wired transmission to the customer printer 2 and kitchen printer 3.

As a result, the customer printer 2 prints and issues an order slip in a predetermined format based on the received order information. The kitchen printer 3 prints and issues a cooking instruction sheet in a predetermined format based on the received order information.

As a result, the person in charge of cooking in the kitchen cooks the menu product according to the cooking instruction sheet. In addition, the customer service person distributes the cooked food according to the order slip, and after completing the distribution of all the products ordered by the customer, delivers the order slip to the customer. Customer
After eating and drinking, go to the accounting place with the order slip and give the order slip to the accounting staff. The accountant inputs the customer identification information printed on the order slip from the keyboard provided in the electronic cash register 1. Then, the total amount of money is displayed based on the customer's order information, and the accountant requests payment from the customer.

By the way, in the conventional wireless order management system of this kind, when a menu item that is out of stock due to lack of food or the like occurs, the customer service representative does not take an order from the customer by mistake. In addition, even if an out-of-stock menu item is specified during the order content registration operation, the registration is invalidated.

That is, when a sold-out menu product is generated in the kitchen, the person in charge in the kitchen operates the keyboard provided in the kitchen printer 3 to input the sold-out information for designating the sold-out menu product. . Then, this out-of-stock information is transmitted to the wireless base station 4 by wire transmission.
Sent to

The radio base station 4 which receives the out-of-stock information stores the received out-of-stock information in the storage unit.
Then, each time a line connection request is received from one of the handy terminals 7a to 7n, it is determined whether or not the out-of-stock information has been transmitted to that handy terminal. Wirelessly transmit to the terminal.

On the other hand, in the handy terminal receiving the out-of-stock information, the received out-of-stock information is stored in the storage unit. Then, every time the customer operates the keyboard to specify the menu item ordered by the customer, it is checked whether the menu item is out of stock or not, based on the out-of-stock information, and if the item is out of stock, invalid registration is displayed. With such a configuration, it is possible to prevent the menu items that are out of stock from being received by mistake.

[0011]

However, each of the handy terminals 7a to 7n makes a line connection request to the radio base station 4 when transmitting the registered order information, and the line with the radio base station 4 is connected. The configuration is such that only one handy terminal that has been sent can transmit order information. That is, the order information and the out-of-stock information are transmitted using the same wireless channel, and one handy terminal makes a line connection request to transmit the order information and then the order information is actually transmitted. It took a long time to finish sending. And
During this time, other handy terminals were unable to perform wireless communication with the host device.

Therefore, when the store is busy, the order information may be registered in many handy terminals almost at the same time. At this time, the wireless base station 4 stores and manages the out-of-stock information that has not been transmitted to each handy terminal. If so, there is a problem that it takes a long time until all the order information from each handy terminal is transmitted to the wireless base station 4, and the order in the kitchen is delayed.

If the order in the kitchen is delayed, it naturally takes a long time from receiving the customer's order to completing the serving. This can lead to the release of customers at family restaurants and fast food restaurants, and the turnover of customers also deteriorates, resulting in lower sales.

Therefore, according to the present invention, it is possible to always shorten the wireless occupation time required from one handy terminal making a line connection request for transmission of order information to the end of actually transmitting the order information. Even if many handy terminals register order information at almost the same time, it aims to provide a wireless order management system that can prevent delays in order reception in the kitchen.

[0015]

According to the present invention, order information registered by a plurality of handy terminals is transmitted to a host device by wireless communication for storage management, and out-of-stock information registered by the host device is stored. In a wireless order management system for transmitting order information to each handy terminal by wireless communication and controlling registration of order information, the host device receives the order information transmitted from each handy terminal using the first wireless channel. Each of the handy terminals is registered with the order information receiving means for responding and the out-of-stock information transmitting means for transmitting the out-of-stock information to each handy terminal using the second wireless channel that does not interfere with the first wireless channel. Order information transmitting means for transmitting the ordered information to the host device using the first wireless channel, and using the second wireless channel from the host device It is obtained by a shortage information receiving means for receiving the out-of-stock information transmitted Te.

[0016]

According to the wireless type order management system of the present invention having such means, when the order information is registered in each handy terminal, the first handy channel is used from the handy terminal to the host device. The order information is wirelessly transmitted, received by the host device, and stored and managed. On the other hand, when the out-of-stock information is registered in the host device, the out-of-stock information is wirelessly transmitted from the host device to each handy terminal using the second wireless channel and is received by each handy terminal to register the order information. Controlled.

Here, the first used for transmitting the order information.
Second, used to transmit wireless channels and out-of-stock information
Since the wireless channels are selected so as not to interfere with each other, the transmission of the order information and the transmission of the out-of-stock information are appropriately performed without correlation.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a wireless order management system for restaurants will be described below with reference to the drawings.

FIG. 1 is a schematic diagram of the system of this embodiment.
This system includes an electronic cash register (ECR) 10 for performing financial transactions, a customer printer (CP) 20 for printing and issuing order slips, a kitchen printer (KP) 30 for printing and issuing cooking instruction slips, and a first printer. Wireless base station 40, second wireless base station 80, etc., which are connected by a wired transmission path 50, and a plurality of handy terminals 70a capable of wireless communication with the host device 60, , 70n.

The electronic cash register 10 is installed at a checkout place, the customer printer 20 is installed at a waiting place for service personnel called a waiter or waitress, and the kitchen printer 30 is installed in a kitchen. Therefore, the first wireless base station 40 and the second wireless base station 80 are installed on the ceiling of a passenger seat or the like. on the other hand,
Each of the handy terminals 70a, 70b, ..., 70n is carried by a person in charge of customer service.

In the system of this embodiment, the wireless channel used for wireless communication is the channel ch between the first wireless base station 40 and each of the handy terminals 70a to 70n.
1 and sets the second wireless base station 80 and each handy terminal 7
Between 0a to 70n, the channel ch2 is set so as not to interfere with the channel ch1.

Incidentally, in the wireless communication specifications in this embodiment system, the type is defined as specific low power wireless, the frequency band is defined as 400 MHz band, and the communication system is defined as simplex.
The channel access method is defined as the CSMA method, and the data communication speed is defined as 4800 bps.

FIG. 2 shows the electronic cash register 10 described above.
FIG. 2 is a block diagram showing the configuration of the main part of the electronic cash register 10, which is a CPU that constitutes the main body of the control unit.
(Central processing unit) 11, ROM (read only memory) 1 in which a control program of the CPU 11 and the like are stored
2. A RAM (random access memory) 13 for storing order information and the like, and a communication interface for controlling transmission / reception of data to / from other devices constituting the host device 60 via the wired transmission path 50. 14, a keyboard, a receipt / journal printer, a display, a cash register peripheral device 15a such as a drawer, and a peripheral device interface 15 to which the peripheral device interface 15 is connected.

This electronic cash register 10 is shown in FIG.
The electronic cash register 1 of the conventional system shown in FIG. 4 has the same configuration and operation, and outputs the total amount of money, calculates change, issues a receipt, etc. based on the order information stored in the RAM 13.

FIG. 3 is a block diagram showing the main structure of the customer printer 20.
Reference numeral 0 denotes a CPU 21 which constitutes the control unit main body, and this CPU 2
1. A ROM 22 storing a control program and the like of No. 1, a RAM 23 for storing order information and the like, and communication for controlling transmission and reception of data to and from other devices constituting the host device 60 via a wired transmission path 50. Interface 24,
Printer interface 2 to which the printer 25a is connected
It is composed of 5 etc.

This customer printer 20 has the same structure and operation as the customer printer 2 in the conventional system shown in FIG. 14, and an order slip is printed and issued in a predetermined format from the printer 25a based on the order information stored in the RAM 23. To do.

FIG. 3 is a block diagram showing the main configuration of the kitchen printer 30.
Is a CPU 31 that constitutes the main body of the control unit, and this CPU 31
ROM 32 in which the control program and the like are stored, and RAM 3 in which a memory area for storing order information and the like are formed
3. A communication interface 34 for controlling data transmission / reception to / from another device constituting the host device 60 via the wired transmission path 50, a printer interface 35 to which a printer 35a is connected, and a display device 36a are connected. The display device interface 36, the keyboard interface 37 to which the keyboard 37a is connected, and the like.

This kitchen printer 30 has substantially the same configuration and operation as the kitchen printer 3 in the conventional system shown in FIG. 14, and a cooking instruction sheet is prepared in a predetermined format from the printer 35a based on the order information stored in the RAM 33. Print and issue.

Further, the keyboard 37a is provided with keys and the like for inputting the product code or the like of the out-of-stock menu product as the out-of-stock information.
The display device 3 displays the content of the out-of-stock information input via 7a.
6a and transmits to the second wireless base station 80 via the communication interface 34.

FIG. 5 is a block diagram showing a main configuration of the first radio base station 40. In the radio base station 40, a CPU 41 constituting a control unit main body, a control program of the CPU 41, etc. are stored. ROM42, each handy terminal 7
The RAM 43 having the order information storage unit 43a for temporarily storing the order information received from 0a to 70n, and the transmission / reception of data performed via the wired transmission path 50 with other devices constituting the host device 60. And a wireless communication interface 45 to which the wireless control unit 45a is connected.

The radio control unit 45a has a radio channel setting unit 46a for setting a radio channel, a radio transmission unit 46b, a modulation unit 46c, a demodulation unit 46d, and a radio reception unit 4.
6e, etc., and controls transmission and reception of data wirelessly via the antenna 47.

Therefore, the CPU 41 in the first radio base station 40 makes the above-mentioned channel ch1 in the radio channel setting unit 46a of the radio control unit 45a as an initial setting.
Set the wireless channel of. After that, the program is configured to receive the order information wirelessly transmitted from each of the handy terminals 70a to 70n by repeatedly executing the processing shown in the flowchart of FIG.

That is, the CPU 41 controls the respective handy terminals 70a to 70n via the antenna 47 and the radio controller 45a.
Waiting for reception of a line connection request signal (hereinafter, abbreviated as ENQ signal) from any one of the above, and when the ENQ signal is received, an ACK for normal reception is returned to the handy terminal which is the source of the ENQ signal. The response signal is sent to the wireless controller 45.
wirelessly via a and the antenna 47.

Next, when the order information wirelessly transmitted from the corresponding handy terminal within a predetermined time is received via the antenna 47 and the radio control unit 45a, an ACK response signal to the corresponding handy terminal is sent to the radio control unit 45a and the antenna 47. The order information received by RAM is transmitted wirelessly via RAM.
It is temporarily stored in the order information storage unit 43a of 43. afterwards,
When the order information stored in the order information storage unit 43a is transferred to the electronic cash register 10, the customer printer 20, and the kitchen printer 30 via the communication interface 44 and the wired transmission line 50, respectively, E
The process returns to the standby for receiving the NQ signal. If the order information cannot be received within the predetermined time after transmitting the ACK response signal to the ENQ signal reception, the process returns to the ENQ signal reception standby again.

The order information receiving means in the host device 60 is composed of the first radio base station 40.

FIG. 6 is a block diagram showing a main configuration of the second radio base station 80. In the radio base station 80, a CPU 81 constituting a control unit main body, a control program of the CPU 81, etc. are stored. The ROM 82, the RAM 83 having the out-of-stock information storage unit 83a for temporarily storing the out-of-stock information registered via the kitchen printer 30, and the other devices constituting the host device 60 are performed via the wired transmission path 50. A communication interface 84 for controlling data transmission / reception, a wireless communication interface 85 to which a wireless control unit 85a is connected, and the like.

The radio control unit 85a includes a radio channel setting unit 86a for setting a radio channel, a radio transmission unit 86b and a modulation unit 86c, and controls the transmission of data wirelessly via the antenna 87. .

Therefore, the CPU 81 in the second radio base station 80 initializes the channel ch2 described above in the radio channel setting unit 86a of the radio control unit 85a.
Set the wireless channel of. After that, every time the out-of-stock information transmitted from the kitchen printer 30 is received via the communication interface 84, the out-of-stock information is stored in the RAM.
This is stored in the out-of-stock information storage unit 84. Further, the program is configured to execute the interrupt processing shown in the flowchart of FIG. 10 in response to an interrupt signal periodically generated at a predetermined time interval from an interrupt timer circuit (not shown).

That is, when the CPU 81 starts this interrupt processing, it first determines whether or not the out-of-stock information is stored in the out-of-stock information storage section 84 of the RAM 83. Then, if it is not stored, the interrupt processing this time is ended.

On the other hand, when the out-of-stock information is stored, the out-of-stock information is read out and the wireless control section 85a is read.
And each handy terminal 70a to 70n via the antenna 87.
If the simultaneous transmission is made to, the current interrupt processing is terminated. In this case, the out-of-stock information includes all handy terminals 70a.
A destination address that can be simultaneously received by ~ 70n is added and wirelessly transmitted.

The out-of-stock information transmitting means in the host device 60 is composed of the second radio base station 80.

FIG. 7 is a block diagram showing the main configuration of each of the handy terminals 70a to 70n.
Reference numerals 0a to 70n denote a CPU 71 that constitutes the main body of the control unit, and a ROM 7 that stores a control program for the CPU 71 and the like.
2, an RAM 73 having various memory areas such as an order storage unit 73a, an out-of-stock information storage unit 73b, a flag area 73c of the order flag F, and a keyboard interface 74 to which a keyboard 74a is connected, as shown in FIG.
Display device interface 7 to which the display device 75a is connected
5, a wireless communication interface 76 to which the wireless controller 76a is connected.

The keyboard 74a has a menu key for inputting a menu code for classifying various menu products, a customer service representative number, a table number,
Keys for inputting various data such as the number of customers and a transmission key for instructing transmission of order information registered by operating these keys are arranged.

The display device 75a displays a menu product name or the like corresponding to a menu code input by operating a menu key, and is used for confirmation of key input contents.

The radio control unit 76a has a radio channel setting unit 77a for setting a radio channel, a radio transmission unit 77b, a modulation unit 77c, a demodulation unit 77d, and a radio reception unit 7.
7e, etc., and controls transmission and reception of data wirelessly via the antenna 78.

Then, each handy terminal 70a-70n.
The CPU 71 in FIG. 11 is programmed so as to execute the interrupt processing shown in the flowchart of FIG. 11 in response to an interrupt signal periodically generated at a predetermined time interval from an interrupt timer circuit (not shown).

That is, when starting the interrupt processing, the CPU 71 first determines whether or not the order flag F is set in the flag area 73c of the RAM 73. Then, when the order flag F is set, the handy terminal is wirelessly transmitting the order information to the host device 60, and thus this interrupt processing is ended.

On the other hand, when the order flag F is reset, the handy terminal is not transmitting the order information, so the wireless channel setting unit 77a of the wireless control unit 76a is connected to the second wireless base station 80. Set the wireless channel of communicable channel ch2.

Next, it is determined whether or not the out-of-stock information transmitted from the second radio base station 80 to each of the handy terminals 70a to 70n has been received. Then, if the out-of-stock information cannot be received, after changing the wireless channel set in the wireless channel setting unit 77a to the wireless channel of channel ch1 capable of communicating with the first wireless base station 40, this time Ends the interrupt processing of.

On the other hand, as a result of setting the wireless channel to the channel ch2, if the out-of-stock information wirelessly transmitted from the second wireless base station 80 is received via the antenna 78 and the wireless controller 76a, the received out-of-stock information is received. Information is additionally registered in the out-of-stock information storage unit 73b. After that, the channel ch1 that allows the wireless channel set in the wireless channel setting unit 77a to communicate with the first wireless base station 40.
If the wireless channel is changed to, the interruption processing this time is ended.

Here, the out-of-stock information receiving means in the handy terminals 70a to 70n is the CPU 71, the ROM 72 storing the interrupt processing program and the wireless controller 76.
a.

The CPU 71 has a keyboard 74.
The customer contact number, table number,
When the order information such as the number of customers, the menu code of the menu item ordered by the customers, and the number of ordered items is registered, and then the transmission key is operated and input to instruct wireless transmission of the order information, the flow chart of FIG. The program is configured to execute the processing shown.

That is, the CPU 71 first determines the CPU 7
After initializing the retry counter RTC built in 1 to “0”, it is determined whether or not the wireless communication using the channel ch1 is being performed between the host device 60 and another handy terminal. Find out through.

If wireless communication is in progress, the retry counter RTC is incremented by "+1", and then it is checked again whether or not wireless communication using the channel ch1 is being performed. In this way, when the wireless communication state cannot be avoided even if the check is repeated a predetermined number of times n, the display device 7
If a message indicating a communication error is displayed on 5a, the current transmission key input process is terminated.

On the other hand, when the wireless communication using the channel ch1 is not performed, the order flag F is set in the flag area 73c of the RAM 73 to declare that the order information is being transmitted. Next, the wireless controller 7
The ENQ signal is transmitted to the host device 60 via 6a and the antenna 78. At this time, the wireless channel setting unit 77a
Is set to channel ch1.

In response to this, an ACK response signal indicating the normal reception is sent from the host device 60 to the antenna 78 and the radio control unit 7.
6a, the wireless control unit 76a receives the order information stored in the order storage unit 73a of the RAM 73.
And to the host device 60 via the antenna 78.

In response to this, an ACK response signal indicating the normal reception is sent from the host device 60 to the antenna 78 and the wireless controller 7.
6a, the flag area 73c
After resetting the order flag F and clearing the order storage unit 73a, the present transmission key input processing is ended.

If the ACK response signal from the host device 60 cannot be received after the ENQ signal or the order information is wirelessly transmitted to the host device 60, a communication error has occurred. When the order flag F is reset and the display device 75a indicates that there is a communication error, the current transmission key input process is terminated.

Here, the order information transmitting means in the handy terminals 70a to 70n is composed of a CPU 71, a ROM 72 storing a program for the transmission key input process, and a wireless controller 76a.

In the present embodiment configured as described above, the channel ch1 is preset as the radio channel in the first radio base station 40 in the host device 60, and the above-mentioned in the second radio base station 40. A channel ch2 that does not interfere with the channel ch1 is preset.

On the other hand, a channel ch1 is usually set as a wireless channel in each of the handy terminals 70a to 70n, and order information is wirelessly transmitted using this channel ch1. Also, the channel is changed to the channel ch2 temporarily while waiting for the order information transmission, and the host device 60
It becomes possible to receive the out-of-stock information wirelessly transmitted from.

Therefore, when the order information is registered in each of the handy terminals 70a to 70n and the transmission key is operated and input,
Order information is wirelessly transmitted sequentially from each of the handy terminals 70a to 70n using the channel ch1. The order information is stored in the first wireless base station 40 of the host device 60.
Received sequentially by electronic cash register 1
0, customer printer 20 and kitchen printer 30
Respectively.

As a result, each of the handy terminals 70a-70.
The order information from n is stored and managed in the electronic cash register 10 and is used for the payment settlement work of the corresponding customer. The customer printer 20 prints and issues an order slip based on each order information, and the kitchen printer 30 prints and issues a cooking instruction slip.

On the other hand, when the out-of-stock information is registered via the kitchen printer 30 of the host device 60, this out-of-stock information is given to the second radio base station 80. Then, from this second radio base station 80, all the handy terminals 70a to 70
It is simultaneously transmitted to channel n using channel ch2.
The batch transmission of the out-of-stock information is repeated at predetermined time intervals.

In each of the handy terminals 70a to 70n, the wireless reception channel is periodically switched from the channel ch1 to the channel ch2 when the order information transmission process is not in progress. As a result, the out-of-stock information repeatedly transmitted from the second wireless base station 80 of the host device 60 is appropriately received by all the handy terminals 70a to 70n, stored in the out-of-stock information storage unit 73b, and the ordered product is received. It is used as a judgment as to whether or not the product is out of stock when entering the menu code of.

Now, assume that the out-of-stock product is registered in the kitchen printer 30, and the out-of-stock information S is wirelessly transmitted from the second wireless base station 80 at time T0 in FIG. 13 using the channel ch2. At this time, when the five handy terminals HT1, HT2, HT3, HT4, HT5 are not transmitting the order information, the out-of-stock information S is received by all the handy terminals HT1, HT2, HT3, HT4, HT5 almost at the same time. To be done.

Subsequently, at time T1 in FIG. 13, the above-mentioned five handy terminals HT1, HT2, HT3, HT4, HT5.
Assuming that the transmission key is operated and input almost at the same time, the respective handy terminals HT1, HT2, HT3, HT4, HT5
From then on, order information is wirelessly transmitted using the channel ch1. In FIG. 13, the signal E is an ENQ signal, the signal O is order information, and the signal A is an ACK response signal.

In this case, in this embodiment, as shown in FIG.
As shown in (a) of the above, the transmission of the order information for five units is completed at time T2. On the other hand, in the conventional example of the system configuration as shown in FIG. 14, under the same conditions, as shown in FIG. 14B, at time T2 ′ which is almost twice as long as time T2, 5 Finish sending the order information for the unit.

As described above, according to the present embodiment, the host device 60 is provided with the first radio base station 40 for receiving order information and the second radio base station 80 for transmitting out-of-stock information, and each handy device is provided. Channel ch1 is used to transmit the order information from the terminals 70a to 70n to the host device 60, and the host device 6
Since the channel ch2 that does not interfere with the channel ch1 is used to transmit the out-of-stock information from 0 to the respective handy terminals 70a to 70n, the out-of-stock information registered in the host device 60 is sent to the respective handy terminals 70a to 70n. The order information can be transmitted while waiting for the transmission of the order information.

As a result, the wireless occupancy time related to the transmission of the order information from one handy terminal is such that the out-of-stock information is transmitted from the host device according to the ENQ signal transmitted from the handy terminal prior to the order information. It is possible to greatly reduce the time required until all the order information from each handy terminal is transmitted to the host device 60, even if the order information is registered in many handy terminals at the same time. It is possible to prevent delays in ordering in the kitchen.

The out-of-stock information is available for all handy terminals 70a.
Since ~ 70n are simultaneously transmitted from the second wireless base station 80 in a format that can be received almost at the same time, there is an effect that any handy terminal can quickly acquire the out-of-stock information.

In the above embodiment, the second radio base station 8
Although the wireless controller 85a in 0 is dedicated to transmission,
A wireless control unit 45a of the wireless base station 40 has a transmission / reception function, monitors the ACK response signals from the handy terminals receiving the out-of-stock information, and keeps the same until receiving the ACK response signals from all the handy terminals. The out-of-stock information may be repeatedly transmitted.

In addition, various modifications can be made without departing from the scope of the present invention.

[0074]

As described above in detail, according to the present invention, 1
It is possible to always shorten the wireless occupation time from when a single handy terminal makes a line connection request to send order information until when it actually finishes sending the order information. Even if the order information is registered, it is possible to provide a wireless order management system capable of preventing a delay in receiving orders in the kitchen.

[Brief description of drawings]

FIG. 1 is a schematic diagram of a wireless order management system according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a main configuration of an electronic cash register according to the embodiment.

FIG. 3 is a block diagram showing a main configuration of a customer printer according to the embodiment.

FIG. 4 is a block diagram showing a main configuration of a kitchen printer according to the embodiment.

FIG. 5 is a block diagram showing a main configuration of a first radio base station in the embodiment.

FIG. 6 is a block diagram showing a main configuration of a second radio base station according to the embodiment.

FIG. 7 is a block diagram showing a main configuration of a handy terminal according to the embodiment.

8 is a diagram showing main memory areas formed in a RAM of the handy terminal shown in FIG.

9 is a flowchart showing main processing executed by the CPU of the first wireless base station shown in FIG.

10 is a flowchart showing a timer interrupt process executed by the CPU of the second wireless base station shown in FIG.

11 is a flowchart showing a timer interrupt process executed by the CPU of the handy terminal shown in FIG.

12 is a flowchart showing a transmission key input process executed by the CPU of the handy terminal shown in FIG. 7.

FIG. 13 is a time chart showing an example of a wireless transmission situation in the embodiment, in comparison with a conventional example.

FIG. 14 is a schematic diagram showing a conventional example of a wireless order management system.

[Explanation of symbols]

 10 ... Electronic cash register 20 ... Customer printer 30 ... Kitchen printer 40 ... First wireless base station 60 ... Host devices 70a to 70n ... Handy terminal 80 ... Second wireless base station

Claims (1)

[Claims] 1. Order information registered respectively by a plurality of handy terminals is transmitted to a host device by wireless communication for storage management, and out-of-stock information registered by the host device is transmitted to each handy terminal by wireless communication. In a wireless order management system for transmitting and controlling registration of the order information, the host device receives order information transmitted from each handy terminal using a first wireless channel and receives an order information receiving unit. And out-of-stock information transmitting means for transmitting out-of-stock information to each handy terminal using a second wireless channel that does not interfere with the first wireless channel, and each of the handy terminals includes registered order information. The first
Order information transmitting means for transmitting to the host device using the wireless channel of No. 3, and out-of-stock information receiving means for receiving the out-of-stock information transmitted from the host device using the second wireless channel. A wireless order management system characterized by the following.