JPH0110715Y2 - - Google Patents

Description

[Detailed explanation of the idea]

This invention relates to a service call that connects customers at tables in restaurants, cooks in the kitchen, and waitresses at the counter. To provide a service call system in which it is possible to easily identify whether the call is a call for a service or a notification indicating the completion of a dish. The present invention will be explained below with reference to embodiment figures. 1st
In the figure, 1 ₁ ... 1 _o are transmitting units, which are arranged at each table in a restaurant, for example, to which addresses are individually assigned, and from which display set signals consisting of identifiable channel information unique to each transmitting unit are sent. This radio wave is transmitted through a predetermined transmission channel, and is received by a receiving unit 2 provided in a counter section, for example, and an address indicating the table is displayed on a display section 3 of this receiving unit 2. 4 is a channel setting unit for setting a predetermined transmission channel and a channel for a unique display set signal;
5 is a display mode changeover switch. Here, a pair of channels are assigned to each display set signal for the address assigned to the table, one channel being assigned to the transmitting units 1 ₁ . . . 1 _o and the other channel being assigned to the centralized transmitting unit 6. The centralized transmission unit 6 is installed in a kitchen, etc., and is capable of selectively transmitting a channel display set signal corresponding to the address display of each table. This is done using the set buttons 7 provided separately. Then, the address is displayed on the display section 3 of the receiving unit 2 according to the display set signal corresponding to the transmitted predetermined address. Incidentally, the centralized transmitting unit 6 and the receiving unit 2 may be connected by wire. Figure 2 shows a circuit diagram of the transmitting unit ₁₁ ... _1o , in which the channel setting section 8 is formed of something like a pinboard, and the modulation section is formed of an arithmetic processing LSI such as a microcomputer. A wave generating circuit 9, a reference signal generating circuit 10 with an oscillation frequency of about 300 KHz that supplies a reference clock signal to the modulated wave generating circuit 9, a carrier wave generating circuit 11 having an oscillating frequency of about 300 MHz, and this carrier wave generating circuit 11. The modulation circuit 12 is connected in series and is controlled by the output of the modulated wave generation circuit 9. The modulated wave generating circuit 9 is connected to each terminal in the 4th row and 6th column of the channel setting section 8, and selects each modulation frequency in each of the 4th row and 6th column of the channel setting section 8, and selects each modulation frequency in each of the 6th column. It specifies each timing in the time series, and sequentially specifies the readout timing of each of the six columns by the output of the modulated wave generation circuit 9, and reads the channel set row in the specified column (i.e., the timing (Specification data of the modulation frequency to be generated) is read into the modulation wave generation circuit 9, and based on this read data signal, the reference clock signal output from the reference signal generation circuit 10 is divided, and a predetermined modulation frequency signal is output. do. The modulated frequency signal, which is obtained as the output of the modulated wave generation circuit 9 and which changes moment by moment at each time point in the time series, is input to the modulation circuit 12, and the 300MHz carrier wave generated by the carrier wave generation circuit 11 is It is modulated by a modulation frequency signal obtained by combining and arranging six modulation frequencies in time series, and is emitted into space from an antenna that also serves as the oscillation coil 13. Therefore, the transmitted radio waves are the first in the time series as shown in Figure 3.
It is transmitted as a signal modulated with one of the four modulation frequencies at each of the sixth to sixth time timings. The combination of the first four signals sets the transmission channel, and the combination of the remaining two signals sets the display set signal channel. FIG. 4 shows a circuit diagram of the receiving unit 2, which includes a front end 14 composed of a super regeneration circuit,
A gain amplifier 15 whose gain is set to about 80 dB,
Four band-pass filter circuits 16 ₁ ... 16 4 whose center frequencies are set to f ₁ to f ₄ , and comparators 17 ₁ ... _{17 4 that} respectively discriminate the outputs of these filters 16 ₁ ... 16 ₄ , A channel setting unit 4 formed of something like a pin board, and a channel determination unit which inputs the outputs of the four groups of comparators 17 ₁ ... ₁₇ and the output of the channel setting unit 4 formed of an arithmetic processing LSI such as a microcomputer. A circuit 18, a sound generation circuit 19, and a display element 20 provided corresponding to the address of each table of the display section 3.
₁ , and an output control circuit 22 consisting of a microcomputer that controls the drive unit 21. The channel discrimination circuit 18 stores the input signal in an internal memory and distinguishes between the transmission channel data and the self-setting channel. If they match, the channel of the display set signal (data corresponding to _S5 and _S6 ) is discriminated from the built-in setting channel, and the display element 20 corresponding to the channel is
₁ ... lights up to display the address, and also determines whether the channel of the display set signal is assigned to the transmitter unit 1 or the centralized transmitter unit 6, and outputs the sound of the tone corresponding to each channel. An announcement is made from the speaker 25 of the sound generation circuit 19. The output control circuit 22 has a binary decimal evolution decoder function, an R/S latch function, and an output state change function. It can be changed as a 5 minute timer, a 1 minute timer, or an R/S latch. By the way, the channel setting section 8 of the transmitting unit ₁₁ ... _1o is a 1-circuit 4-contact switch _S1 as shown in Fig. 5.
~ _S5 and a 1-circuit, 2-contact switch _S6 , the transmission channel, that is, the transmission system of the transmitting unit ₁ , the centralized transmitting unit ₆ , and the receiving unit 2, is controlled by the combination of turning on the switches S1 to S4. Switches S ₅ and S ₆ are used to set channels in which display set signals can be individually identified. Here, if we take out only the switches S ₅ and S ₆ and look at the code signal of the modulated wave generation circuit 9, we get the following.

[Table] Here, since Switch S ₆ uses a 1-circuit 2-contact switch as described above, the code signal
0000, 0010, 0100...1110 are obtained, but code signals 0001, 0011, 0101,...1111 are not obtained. Therefore, the channel code of the display set signal of the transmitting unit 1 is assigned to 0000, 0010, 0100...1110,
These channels have a one-to-one correspondence with the addresses of each table. On the other hand, the centralized transmitting unit 6 is constructed in the same manner as the transmitting unit 1 except for the channel setting section 18, and the switch _S6 is connected as shown in FIG. 6 so that the signals of _f2 and _f4 can be taken out. In addition, all combinations of the contacts of switch S ₅ and each contact of switch S ₆ are made, and all combinations can be turned on using the corresponding set buttons 7, and the code signal 0001,
0011, 0101...1111 can be selected and set individually, and each code signal 0001, 0011, 0101...1111 is made to correspond to the address of each table. In other words, the addresses of each table can be displayed either by the centralized transmission unit 6 or by the transmission units 1 ₁ . . . 1 _o provided separately. Now, when the display set signal is transmitted from the transmitter unit 1 installed on an appropriate table, the display set signal is sent to the receiver unit 2.
The modulated carrier wave signal received by the receiving antenna 26 is amplified and demodulated by the front end 14, and then sent to each filter circuit 16 ₁ ...1 via the gain amplifier 15.
6 Input in parallel to ₄ . Filter circuit 16 ₁ ...1
6 ₄ corresponds to each of the four modulation frequencies f ₁ ...f ₄ , and produces an output from the filter circuit 16 ₁ ... 16 ₄ that matches the frequency of the demodulated signal received at that time,
The comparators 17 ₁ ... 17 ₄ determine whether an output has occurred in each of the corresponding filter circuits 16 ₁ ... 16 ₄ , and therefore, depending on the frequency of the demodulated signal received at that time, one of the comparators 17 ₁ ...
An output is generated at ₁₇₄ and is input to the channel discrimination circuit 18. Channel discrimination circuit 18
inputs each output of the comparators 17 ₁ ... 17 ₄ as described above, and sequentially specifies signals to the pinboard matrix of the channel setting section 4, and outputs signals from the row where the channel setting in the specified column is performed. The output is read in, and if the first demodulated signal in the time series generates an output in one of the comparators 17 ₁ ... 17 ₄ , then the comparator 17 ₁ that generated this output
...17 Number ₄ and number 1 as the first in the time series
When the column read command signal is given to the channel setting section 4, the channel discriminating circuit 18 compares and discriminates the row number for which the channel is set in the first column, which is read into the channel discriminating circuit 18, and if they match. While waiting for the comparators 17 ₁ ... 17 ₄ to operate according to the next second demodulated signal, a second column read command signal is given to the channel setting section 4, and an output is generated at this second time timing as well. Comparator 17 ₁ ...17 ₄
If the number matches the number of the channel-set row in the second column, the third reception waiting state is entered in the same manner. In this way, the numbers of the activated comparators 17 ₁ ... 17 ₄ at the first to fourth time timings are all the numbers of the rows in which channels are set in the first to fourth columns of the channel setting section 4, respectively. When they match, it is determined that the reception channel of the reception unit 2 has been called, and the numbers of the comparators 17 ₁ ... 17 ₄ activated at the fifth to sixth time timings are combined with the number combination stored in the built-in memory. A code signal corresponding to the matched combination is output to the output control circuit 22, and it is determined whether the display set signal is from the transmitting unit 1 or the central transmitting unit 6, and the code signal corresponding to the matched combination is output to the output control circuit 22. When it _is determined _that
The audio signal generated by the audio output circuit 24 consisting of a DN825] is given a unique tone, and the speaker 25 emits a voice with that unique tone to confirm the transmission from the transmitting unit 1. inform. The output control circuit 22 determines the display element 20 corresponding to the address in the table of the transmitting unit 1 based on a predetermined code signal, and controls the drive circuit 21 to cause the display element 20 to light up. Therefore, the waiter or waitress who sees the display element 20 illuminated and who opens the voice notification knows that the customer at the table at the predetermined address corresponding to the channel display is calling. If the address display is reset by operating the built-in timer set by the display mode switching unit 5 or by operating the reset unit using the R/S latch, the address display will be reset. Now, when the food ordered by the customer heard by the waiter or waitress is served, the cook in the kitchen presses the set button 7 for the address of the table in the central transmission unit 6 of the kitchen, and the message is sent to the receiving unit 2 in the same way as described above. , the transmission channel and the channel of the display set signal are discriminated in the same way as described above, and if the channel of the display set signal is the channel assigned to the centralized transmission unit 6, the channel discrimination circuit 8 selects the NAND gate 26B.
outputs a signal to turn on the transistor Tr ₂ , gives the audio signal of the audio output circuit 24 a different timbre from that received from the transmitting unit 1, and emits audio with that unique timbre from the speaker 25. The transmission from the centralized transmission unit 6 is notified by sound. At the same time, similarly to the above, the corresponding code signal of the channel of the display set signal is output from the channel discrimination circuit 18 to the output control circuit 22, and the output control circuit 22 selects the display element 20 at the address of the table corresponding to the channel of the display set signal. lights up. Therefore, the waiter or waitress can tell from the voice notification and the address display that the food at a given table is ready. This display is reset in the same manner as the display by the transmitting unit 1 described above.
Furthermore, although one display element 20 is provided for the same address, a display element may be provided for each channel of the display set signal assigned to the same address so that display can be performed on the same display section. 27 is a driving circuit for this purpose. Furthermore, in the above-described embodiment, the tones are different to distinguish whether the transmission is from the transmitting unit 1 side or the centralized transmitting unit 6 side, but one may be made silent and only the display element 20 is lit. Furthermore, 28 and 29 in the figure are constant voltage circuits. 30 is a power supply circuit. Further, 31 is a clock generation circuit, and 32 is a tone color switching circuit. Furthermore, each terminal is connected to a terminal with the same symbol. In the service call system configured as described above, the present invention allocates a plurality of channels to the same address and changes the tone including silence of the voice notification depending on the channel information of the signal transmitted from the transmitting unit. Since the receiving unit is equipped with a voice notification control function, it is possible to identify information related to the same address by tone color. For example, by setting up a transmitting unit in the kitchen with the same address as the transmitting unit installed at the table, it is possible to send a call from the table side, or to send a call from the kitchen side indicating that the food corresponding to the table at that address is ready. This system has the advantage that customers can be identified by voice notification, and as a result, in addition to displaying their address, it is possible to quickly respond to customers and improve service.

[Brief explanation of drawings]

FIG. 1 is a front view of an embodiment of the reception display system of the present invention, and FIG. 2 is a circuit diagram of the same transmitting unit.
Fig. 3 is a waveform diagram of the transmission signal shown above, Fig. 4 is a circuit diagram of the receiving unit shown above, Fig. 5 is a configuration diagram of the channel setting section of the sending unit shown above, and Fig. 6 is a channel setting section of the central transmission unit. FIG. 1 ₁ ...1 _o is the transmitting unit, 2 is the receiving unit,
3 is a display section, 6 is a central transmission unit, 18 is a channel determination circuit, and 19 is an audio generation circuit.

Claims (1)

[Scope of utility model registration request] The receiving unit receives the radio signal emitted from the transmitting unit, which transmits signals with channel information unique to each address from multiple locations to which addresses are assigned separately, and displays the installed address of the transmitting unit on the receiving unit. In a service call system that displays a message on a call unit and provides an audio notification of reception, a voice notification system that assigns multiple channels to the same address and changes the tone, including silence, of the audio notification depending on the channel information contained in the signal transmitted from the transmitting unit. A service call system in which the receiving unit is equipped with a notification control function.