JP2524661B2 - Wireless data receiver - Google Patents

Description

The present invention relates to a wireless data receiving device used in a wireless order receiving system in a large restaurant or the like.

[Prior Art] In recent years, for example, in restaurants such as large restaurants and fast food restaurants, a portable order terminal (hereinafter referred to as a handy terminal) in which a wireless circuit is incorporated in a customer service person called a waitress or a waiter, respectively. ) Is being held, and a system for accepting orders by entering the contents of orders received from customers at their seats into their own handy terminals is being established. In the case of this system, the order data input to the handy terminal is wirelessly transmitted from the antenna of the terminal and is received by, for example, the antenna of the wireless unit mounted on the ceiling of the passenger seat. Then, the data is sent from the wireless unit to the relay machine, processed into print data and the like, and printed out from the kitchen printer or the customer printer.

By the way, if we try to introduce this ordering system to a restaurant with a large seating area or a restaurant with a complicated arrangement of seats, one wireless unit cannot cover the entire seating area, so the wireless unit and the corresponding A plurality of repeaters to be used will be prepared respectively, and the wireless units will be distributed and arranged in various places. In this case, if the frequencies used by the wireless units are the same, the order data transmitted from one handy terminal will be received by the multiple wireless units and processed by the corresponding relays. It is necessary to use different frequencies for the parts. Therefore, the use area of the handy terminal is limited to the area that can be covered by the radio unit having the same radio frequency.

[Problems to be Solved by the Invention] As described above, even in a restaurant having a large seating area or a restaurant having an intricate arrangement of seats, a repeater as a master unit and a wireless unit connected thereto are respectively provided in the related art. It is possible to introduce a wireless ordering system by preparing multiple units, but in this case it is necessary to use different frequencies for each wireless unit. It was limited to the area that could be covered by the department. Therefore, it is difficult to use one handy terminal over a wide range.

Therefore, the present invention is to provide a wireless data receiving device that enables the use of one slave unit over a wide range by making the use frequencies of the wireless units connected to the plurality of master units the same. It is what

[Means for Solving the Problem] The present invention relates to a master master unit including a wireless unit that receives wireless data transmitted from a slave unit including a wireless circuit, and is connected to the master master unit via a transmission path. And one or more satellite master units each having a wireless unit for receiving wireless data transmitted from the slave unit, the master master unit validates the wireless data when it receives wireless data in its own wireless unit. When the normal response output means for outputting a normal response to the slave unit via its own wireless unit and the wireless data received by the wireless unit of the satellite master unit via the transmission line are taken in, the data is transmitted to its own wireless unit. Data judgment means for judging whether or not the data is already received by the department, and if this judgment means judges that the data is not already received, the acquired data is treated as valid and processed to the satellite master unit via the transmission path. response The satellite master unit is provided with a processing response output means for outputting the data. When the satellite master unit receives wireless data in its wireless unit, the satellite master unit transmits the data to the master master unit through the transmission path, and the master master unit transmits the data. A normal response output means for outputting a normal response to the slave unit via its own radio unit when the processing response is taken in through the transmission path is provided.

[Operation] According to the present invention having such a configuration, when the wireless data transmitted from the slave unit is received by the wireless unit of the master master unit, the data is validated and processed, and is transmitted to the slave unit. A normal response is output from the wireless unit of the master unit. on the other hand,
When received by the wireless unit of the satellite base unit, the received data is transmitted to the master base unit via the transmission path. Then, it is judged whether or not the master master unit has processed the data, only the unprocessed data becomes valid and processed by the master master unit, and the normal response to the slave unit is output from the wireless unit of the satellite master unit. It

Therefore, if the operating frequency of the wireless unit of the master master unit and the operating frequency of the wireless unit of the satellite master unit are the same, the wireless data transmitted from the slave unit will be transmitted between the wireless unit of the master master unit and the wireless unit of the satellite master unit. There is a possibility that they will be received by both, but in this case only the data on the master base unit side is valid and processed, so there is no duplication.

[Embodiment] An embodiment in which the present invention is applied to a wireless order receiving system in a restaurant will be described below with reference to the drawings.

Figure 1 is an overall view of the wireless ordering system.
(High-level data link control) Each device of master relay machine 12, satellite relay machine 13, kitchen printer 14, slip issuing machine 15, electronic cash register 16 is connected inline via transmission line 11 such as line Has been done. The master repeater 12 and the satellite repeater 13 are provided with radio units 17 and 18 having the same operating frequency.

Further, in FIG. 1, reference numeral 19 denotes a handy terminal possessed by each customer service person, which has a built-in microprocessor and wireless circuit, and a keyboard 19a,
It has a display 19b and an ante 19c. Then, when the code, quantity, etc. of the menu item are keyed in from the keyboard 19a, as shown in FIG. 2, the order data (code and quantity of each menu item) 21 has a recognition code 22 for identifying the message. The check bit 23 is added to create an order data message, and the antenna 19C is configured to wirelessly transmit at the frequencies used by the wireless units 17 and 18. Here, the identification code 22 is, for example, a two-digit identification code set in each handy terminal and a three-digit serial number that is incremented by "+1" each time an order data message is created. It is a 5-digit code that is a combination of.

FIG. 3 is a block diagram showing the circuit configuration of the master repeater 12, and 31 in the figure is a CPU (central processing unit) that constitutes the control unit main body. And to this CPU31, the bus line 32
Via each memory of ROM33 and RAM34, a clock circuit 35 for timing the date and time, an in-line interface 36 for controlling the transmission and reception of data between various devices via the transmission path 11, the wireless unit 17 and It is connected to each unit of the wireless unit interface 37 that controls the transmission and reception of data performed between them.

Since the satellite repeater 13 has the same circuit configuration as that shown in FIG. 3, the same reference numerals are used in the following description.

Then, in the RAM 34 of the master repeater 12, as shown in FIG. 4, a customer-specific table for storing the contents (order data) of the order menu ordered by the customer and the total price for each customer number for specifying the customer. 40 are provided. In addition, each RAM 3 of the master repeater 12 and the satellite repeater 13
Reference numeral 4 denotes a recognition code buffer for accumulating and holding a predetermined number of recognition codes 22 in the order data message transmitted from the handy terminal 9 as shown in FIG.
50 are provided.

The CPU 31 of the master repeater 12 is program-controlled so as to execute the processing shown in FIG. That is, when the order data message in the data format shown in FIG. 2 is input, the recognition code 22 in the message is taken out and compared with the contents of the own recognition code buffer 50 (data judging means). When the code matching the recognition code 22 extracted from the input message is already stored in the buffer 50, the order data 21 in the message is processed data, so the input data is discarded, The process ends.

If a code matching the recognition code 22 extracted from the input message is not stored in the recognition code buffer 50,
Since the order data 21 in the message is unprocessed data, it is valid and the new recognition code 22 is stored in the recognition code buffer 50.
To store. At this time, if the recognition code buffer 50 is full, the old data is discarded in order. Next, it is determined whether the input destination of the order data message is the in-line interface 36 or the wireless unit interface 37. And
In the case of the wireless unit interface 37, since it is the order data message received by its own wireless unit 17, it sends a normal response to the handy terminal 19 of the data transmission source via the wireless unit 17. At this time, since the first two digits of the identification code in the order data message are the identification code of the handy terminal 19 which is the data transmission source, the transmission address may be created based on this identification code. (Master side normal response output means) On the other hand, when the input destination of the order data message is the inline interface 36, it is received by the wireless unit 18 of the satellite repeater 13 connected via the transmission path 11. Since it is an order data message, it outputs a processing response to the satellite repeater 13. (Processing response output means) After that, the order data in the order data message is processed to create data stored in the customer-specific table 40, print data for the kitchen printer 14, print data for the customer printer 15, and the like. . Then, the stored data is stored in the customer-specific table 40, and each print data is sent to the kitchen printer 14 and the customer printer 15 via the transmission path 11, and this processing is ended.

On the other hand, the CPU 31 of the satellite repeater 13 is program-controlled so as to execute the processing shown in FIG. That is, when the order data message of the data format shown in FIG. 2 is input, the recognition code 22 in the message is taken out and compared with the contents of the own recognition code buffer 50. When the code matching the recognition code 22 extracted from the input message is already stored in the buffer 50, the order data 21 in the message is processed data, so the input data is discarded, The process ends.

If a code matching the recognition code 22 extracted from the input message is not stored in the recognition code buffer 50,
Since the order data 21 in the message is unprocessed data, the new recognition code 22 is stored in the recognition code buffer 50. Then, the input message is transmitted to the master repeater 12 via the transmission line 11. (Data transmitting means) After that, when the processing response is not sent from the master relay device 12 within a fixed time, the message is the master relay device.
Since the data has been received and has already been processed on the 12th side as well, this processing ends.

On the other hand, if a processing response is sent from the master relay device 12 within a certain period of time, the message is not received by the master relay device 12, so the wireless unit 18 of its own
A normal response is transmitted to the handy terminal 19 which is the data transmission source via the, and this processing is ended. (Satellite-side normal response output means) In a restaurant using the wireless order receiving system of the present embodiment configured as described above, at least one piece of wireless data transmitted from the handy terminal 19 can be sent from any place in the audience.
Radio section 17,1 so that one radio section 17 or 18 can receive
Install 8 on the ceiling of the audience. By doing this,
The wireless data (order data message) transmitted from the handy terminal 19 of the stand is the master relay device 12 depending on the location.
Side wireless unit 17 alone, the satellite relay unit 13 side wireless unit 18 alone receives both wireless units 17.
And 18 at almost the same time.

If only the wireless unit 17 on the master repeater 12 side receives the order data, the master repeater 12 processes the order data, and the wireless unit 17 outputs a normal response to the corresponding handy terminal 19.

In addition, even when the wireless unit 17 on the master repeater 12 side and the wireless unit 18 of the satellite repeater 13 receive at almost the same time,
The master repeater 12 processes the order data based on the reception result at the wireless unit 17, and the wireless unit 17 outputs a normal response to the corresponding handy terminal 19. At this time, the transmission path from the satellite repeater 13 to the master repeater 12
Although the message received by the wireless unit 18 is transmitted via 11,
The received data in the message is discarded because it has already been processed by the master repeater 12.

On the other hand, when received only by the wireless unit 18 on the satellite repeater 13 side, the received message is transmitted to the master repeater 12 via the transmission path 11 and processed by the master repeater 12. And from the master repeater 12 to the satellite repeater
A processing response is returned to 13. As a result, the wireless unit 18 of the satellite repeater 13 outputs a normal response to the corresponding handy terminal 19.

Therefore, even if only one wireless terminal 17 on the master repeater 12 side can receive one handy terminal 19,
It can be used even in a region where only the wireless unit 18 on the satellite repeater 13 side can be received, or even in a region where both wireless units 17 and 18 can receive substantially simultaneously.

As a result, even a restaurant with a large seating area or a restaurant with a complicated arrangement of seats can use a single handy terminal over a wide range by arranging radio parts of the same frequency in place. As a result, the efficiency of ordering work can be improved.

Although the satellite repeater 1 is one in the above-described embodiment, it can be implemented if a plurality of satellite repeaters 1 can be recognized in the master repeater so that the satellite repeater can recognize the data from the satellite repeater. is there. Further, the present invention can be applied not only to a wireless order receiving system but also as a non-war data receiving device in other wireless data transmitting / receiving systems. In addition, it goes without saying that various modifications can be made without departing from the spirit of the present invention.

[Effects of the Invention] As described in detail above, according to the present invention, the operating frequencies of the radio units connected to a plurality of base units are set to be the same.
It is possible to provide a wireless data receiving device that enables the use of one child device over a wide range.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment in which the present invention is applied to a wireless order receiving system. FIG. 1 is a block diagram showing the overall configuration of the system, and FIG. 2 is a data format diagram of an order data message wirelessly transmitted. , FIG. 3 is a circuit block diagram of the master repeater, FIG. 4 is a block diagram of a table for each customer, FIG. 5 is a block diagram of a recognition code buffer, and FIG. 6 is a master repeater side.
FIG. 7 is a flowchart showing the order data message input processing of the CPU, and FIG. 7 is a flowchart showing the order data message input processing of the satellite relay side CPU. 11 …… Transmission path, 12 …… Master repeater (master master), 13 …… Satellite repeater (satellite master), 1
7,18 ... Wireless section, 19 ... Handy terminal (slave unit).

Claims (1)

(57) [Claims] 1. A master master unit having a wireless unit for receiving wireless data transmitted from a slave unit having a built-in wireless circuit, and a master master unit connected to the master master unit via a transmission line and transmitted from the slave unit. 1 equipped with a wireless unit for receiving wireless data
Or, a plurality of satellite master units are provided, and when the master master unit receives wireless data in its wireless unit, it validates the data and outputs a normal response to the slave unit via its own wireless unit. Data for determining whether or not the response output means and the wireless data received by the wireless unit of the satellite master unit via the transmission path are already received by the wireless unit of the satellite. And a processing response output means for validating the acquired data and outputting a processing response to the satellite master unit through the transmission path when the determination means determines that the received data is not received data, The satellite master unit, when receiving wireless data in its wireless unit, transmits the data to the master master unit via the transmission path, and transmits the data from the master master unit. Wireless data reception apparatus characterized by the taking in processing response through to and a normal response output means for outputting a normal response to the handset via its own radio unit.