JPS62247729A - Data input apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention is a method for enabling an information provider (consumer) to select a desired product from product information provided using an information transmission medium such as a catalog. Enter the item number and order quantity,
The present invention relates to a data input device used to inform a product information provider. More specifically, data input devices are provided that include improved circuitry for powering analog signal processing circuitry included in such devices.

[Conventional technology] As a method of selling products without a store, catalogs with external photos of the products, or leaflets with only the product name for products whose appearance is well-known, are distributed to consumers' homes, and then posted there. The customer selects the desired item from the listed product group, receives the requested quantity via postcard, telephone, or OCR (optical character reader) paper, and then sends it by post or courier. There is a method of delivering products to each household.

Among these communication methods, postcards are limited in the number of products that can be handled due to the small amount of information that can be transmitted, the slow transmission speed, and the high cost of transmission. In other words, we have no choice but to limit ourselves to products that have a high unit price and do not require freshness. Further, the communication method by telephone has disadvantages such as the possibility of trouble between the supplier and the consumer because there is no recordability.

A method to improve these shortcomings is to print the product name on OCR paper, write the order quantity as a number in the same field as the product name, collect the number after writing it, and have it read by OCR. There is. This method more than makes up for the shortcomings of postcard or telephone communication means in terms of recordability, amount of information transmitted, transmission speed, and reading speed.

However, when numbers are written by hand and read by a machine, many numbers are unreadable, and great care must be taken to prevent stains and deformation of the paper surface. In addition, the OCR paper size is due to physical limitations of OCR (
It is determined by the number of reading sensors, entrance dimensions),
Even if you try to increase the number of listed product items, it cannot be changed easily.

Therefore, in order to solve these problems, a numeric keypad was created, which was converted into a 2] - code and stored in a storage means such as a semiconductor memory, and used to confirm the entered number.
It is conceivable that the device is equipped with a display section that converts and displays the - code into a readable character pattern.

In such a device, numbers are entered using numeric keys, so there are no individual differences. Furthermore, if a semiconductor memory is used as a storage means, it is small and has a large capacity of 1q, so it does not have the same limitations as OCR paper.

One way to collect manually-generated information is to put the above-mentioned semiconductor memory in a case (hereinafter referred to as a memory card) and then manually transport it.
There is a method in which the semiconductor memory is fixed in the device and its contents are transmitted using a communication line.

The method using a memory card is a method that digitizes OCR paper, and does not require major changes to the conventional non-store sales management method. On the other hand, the method of using communication lines is completely different from conventional methods and is superior in terms of speed and reliability of information transmission.

The device described above has significant advantages in terms of both mass and mass in transmitting information, but there are also problems that need to be solved in operation.

[Problems to be Solved by the Invention] The environment in which the above device is used must be almost the same as the working environment when writing numbers on OCR paper. That is, it is desirable that the electric wire for power supply or the electric wire for communication line connection be unnecessary during the above-mentioned work. Therefore, since the electric wire for connecting the communication line is not needed during data input work, the connector is installed so that it can be attached and detached, and the power supply is provided by a battery (hereinafter referred to as the main battery).

). Other advantages of supplying power from the main battery include the ability to use communication lines even during commercial power outages, the ability to use it as a portable input terminal, and the ability to detect battery depletion during operation, so you can quickly For example, the main battery can be prepared.

On the other hand, the modulation/demodulation circuit that transmits signals during communication processes not only digital signals but also analog signals, so the circuit that processes digital signals requires a high voltage power supply (for example, 12μ). , it is impossible to supply this high voltage power directly from the battery (main battery) due to the increased storage volume and weight, so it is necessary to supply it through a circuit that converts the voltage, that is, a step-up power supply circuit. is common.

Although the advantages of using the main battery as a power source are as described above, on the other hand, there is a problem in that it becomes necessary to provide a step-up power supply circuit.

When using a main battery as a power source, an important issue is how to reduce consumption of the main battery.

[Means for Solving the Problems] The present invention has been made to solve these problems, and it is necessary to provide an efficient boost power supply circuit and to solve the problem that is a major factor in power consumption in data input processing. This is intended to significantly reduce reactive power when power is supplied to the modulation/demodulation circuit.

For this purpose, means for monitoring the voltage supplied from the main battery and boosting means capable of selecting either double boosting or triple boosting are provided.

[Function] When the output voltage of the main battery is high, the voltage boosting means is made to boost the voltage twice, and when the output voltage of the main battery is low, the voltage monitoring means causes the voltage boosting means to boost the voltage three times, Improved efficiency of voltage conversion.

Furthermore, for the modulation/demodulation circuit, which consumes a large amount of power, it was decided that power from the main battery would be supplied to the step-up power supply means only during communications that require the operation of this circuit. The time required for energizing the modulation/demodulation circuit is shortened, and the operating time of the data manipulator powered by batteries can be significantly lengthened.

[Embodiment] FIG. 1 shows the overall configuration of a first embodiment of a data input device according to the present invention. 140 and 141 are signal lines connected to communication lines such as telephone lines. Reference numeral 101 denotes a polarity reversal detection circuit for detecting whether exchange connection has been made to a communication partner (center device). Reference numeral 102 is a full-wave rectifier circuit for fixing the DC polarity of circuits to be connected later. Signal lines 142 and 143 transmit the output of the full-wave rectifier circuit 102, with 142 being a positive signal line and 143 being a negative signal line (common signal line of the circuit).

Reference numeral 103 denotes a line use detection circuit for detecting whether or not the communication line is being used by a telephone or the like connected in parallel to the communication line outside the present data input device. 104
is a contact circuit equivalent to a knock switch in a telephone.

Reference numeral 105 denotes a dial/pulse sending circuit for sending a pulse signal to an exchange (installed in a telephone office, hereinafter simply referred to as an exchange) which requires a pulse signal as a dial signal. Reference numeral 106 is a connection circuit for disconnecting the circuits connected thereafter while the pulse signal is being sent out. 107 is an MF for outputting an MF low signal to an exchange that requires a frequency modulation signal (hereinafter referred to as MF low signal) as a dial signal.
This is a signal sending circuit. Reference numeral 108 denotes a DC closed circuit that exhibits high impedance for AC signals and functions to allow a current of a certain level or more to flow for DC signals.

110 is an amplifier circuit for amplifying the audio band signal on the signal line 182. A speaker 111 converts the output signal of the amplifier circuit 110 transmitted through the signal line 183 into an audible signal sound, and allows the user to monitor the communication sound during communication to check the operation.

Reference numeral 109 is a connection circuit for connecting/disconnecting the signal supplied to the amplifier 110. 184 and 185 are capacitors for blocking direct current and passing only alternating current signals.

112 dials a dial signal outputted from a main control circuit 118 to an information line 150, which will be described later. This is a dial signal generation circuit that converts and outputs the signal to 149.

114 receives the transmission data output from the main control circuit 118 during transmission via the signal line 153 and modulates the carrier wave.
Function to send to signal line 152 and signal line 15 when receiving
This modulation/demodulation circuit has a function of demodulating two modulated signals and supplying received data to the main control circuit 118 via a signal line 153.

Reference numeral 115 is a boosting power supply circuit that characterizes the present invention and boosts and supplies power from the output of a power supply circuit 117 (described later) only when necessary to operate the modulation/demodulation circuit 114. Reference numeral 116 denotes a connection circuit for connecting/disconnecting the supply of power to the modulation/demodulation circuit 114, which is different from the one described above. 117 is a power supply circuit that can use a replaceable battery (main battery) when the data input device is carried and operated, or a power source obtained by step-down rectification of a commercial power source when it is operated stationary. It is.

118 is a main control circuit that comprehensively controls this data input device. Reference numeral 119 is a power supply circuit that supplies the main power to the data input device and includes an output voltage stabilizing circuit and a voltage reduction monitoring circuit that characterizes the present invention.

Reference numeral 158 denotes a power line for supplying the stabilized output of the power supply circuit 119. In addition, 169 and 170 are the power supply circuits 11
This is a signal line for transmitting the voltage drop monitoring output from the voltage drop monitoring circuit included in 9.

120 is a user of the data input device (consumer who makes an order) to instruct the main control circuit 11B to start operation;
This key is used for instructions by the user (hereinafter referred to as the user), and is a control key equivalent to a general power ON key. 121 is an input key circuit for the user to instruct the main control circuit 118 to operate. 122 has a function of converting and displaying symbols, numbers, and character codes outputted by the main control circuit 118 via the signal line 161 into readable patterns in order to display information necessary for the user to operate this data input device. This is a display circuit with a

123 is a cherry blossom mochi circuit that is controlled by the main control circuit 118 via a signal line 162 to disconnect the power line 163 from the power line 158 in order to cut off the power to the display circuit 122 when unnecessary.

127 is the guide information used when the user inputs the data handled by this data input device and the control information necessary for the main control circuit 11B to operate (information distributed from the center side to each user; (hereinafter referred to as downstream information. Also, the center refers to a business that provides product information and sells products, hereinafter referred to as the center), or information newly generated after input (transferred from individual users to the center side). This is a memory circuit (hereinafter referred to as a memory card) that has the function of storing information (hereinafter referred to as upstream information), and whose stored contents do not disappear even if it is removed from the data input device. .

Reference numeral 124 denotes an information line 1 for specifying the reading position and writing position in the memory card 127 and inputting data.
This is an interface circuit that enters between 76 and 165 and performs a buffering operation.

−11= 125 is a means for storing control information of the downstream information stored in the memory card 127, storing upstream information, or storing information necessary for the main control circuit 118 to operate, This is a memory circuit (hereinafter referred to as RAM) that can be read and written at any time via an information line 166 from the main control circuit 118 that is fixedly installed inside the data input device.

126 is a clock circuit that also has a built-in calendar function. 1
Reference numeral 28 denotes an auxiliary battery provided to realize a backup function in order to continue supplying current to some circuits when the power supply circuit 117 is no longer able to supply a desired voltage. Diodes 173 and 174 form a circuit for smoothly switching the power supply when the output voltage of the power supply circuit 117 becomes lower than the output voltage of the auxiliary battery 128.

171 is a signal line from the power supply circuit 119, and the power supply line 1
When the voltage at 58 falls below a predetermined value, a standby signal is issued to cause the interface circuit 124, RAM 125, and clock circuit 126 to shift from the operating state to a standby state in which they do not respond to external signals.

172 outputs the output of the diode 173 or 174 to a clock circuit 126 whose operation cannot be stopped, a RAM 125 which needs to retain memory, or a memory card 127 which has a built-in battery. interface circuit 124 that performs control so as not to suck power from the built-in battery when the
This is a power line for constantly supplying voltage.

177 provides operating power to the memory card, and when the voltage on the power supply line 158 decreases, the memory card 1
This diode is inserted between the power line 15B and the power line 178 in order to prevent the built-in battery 27 from being exhausted.

Although not shown in FIG. 1, the power supply for the dial signal generation circuit 112 and the amplifier circuit 110 uses a DC current superimposed on the signal line 180, with only the DC component separated by a reactance circuit. . Also, some common lines (so-called GND lines) are omitted.

The configuration of one embodiment of the present data input device has been explained above in accordance with FIG.
This will be explained along with the drawings below.

Figure 2 shows a polarity reversal detection circuit 101 and a full-wave rectification circuit 102.
, a circuit diagram showing a specific example of a line use detection circuit 103 and a contact circuit 104. FIG.

When the light emitting diode D2 and the phototransistor Q1 are optically coupled and the signal line 140 is at a positive potential with respect to the signal line 141, a current flows to the light emitting diode D2 through the resistor R1 and the diode D1, and the phototransistor Q1 becomes conductive. In addition, the signal line 140 is the signal line 1
When the potential is negative with respect to 41, the diode D1 blocks the current flowing to the light emitting diode D2, and the photo
detecting whether the polarity of the signal lines 140 and 141 is reversed due to the transistor Q1 becoming non-conductive;
The circuit outputs the detection signal via the signal line 144 or the polarity reversal detection circuit 101.

Diode D3. D4. Signal line 1 by D5 and D6
42 is always at a positive potential, and the signal line 143 is always at a negative potential, or is a full-wave rectifier circuit 102.

By dividing the potential difference between signal lines 142 and 143 with resistors R2 and R3 and connecting it to the base terminal of transistor Q2, the potential difference is kept at a constant value (the potential difference when the DC circuit is closed with respect to the exchanger and open). In other words, when the DC circuit to the exchange is open, the reference voltage (in this case, the voltage drop between the base and emitter of transistor Q2 is approximately 0.7 V)
Since the transistor Q2 is set to exceed the current value, the transistor Q2 becomes conductive, and otherwise it becomes non-conductive, thereby detecting whether or not the communication line is being used elsewhere, and connecting the signal line 14.
5 is a line use detection circuit 103.

Figure 3 shows the dial/pulse sending circuit 105 and the contact circuit 1.
06, M “Signal sending circuit 107 and DC closing circuit 1
FIG. 2 is a circuit diagram showing a specific example of No. 08.

The dial pulse sending circuit 105 includes a transistor Q3.
．． A high voltage (l) is applied to the base terminal of the transistor Q4, that is, the signal line 148.
-liqh) is applied, the transistor Q3 becomes conductive and the signal line 180→transistor Q3→R4→signal line 1
43, and when a low voltage (LOW) is applied to the signal line 148, the transistor Q3 becomes non-conductive and opens (turns off) the route.
Generates a dial pulse. The contact circuit 106 is turned off under the control of the main control circuit 118 only while the dial pulse sending circuit 105 is operating. MF signal sending circuit 1
07 is the transistor Q5 and the resistors R7, R8, R9
The amplified MF signal applied to the signal line 149 is amplified and outputted to the signal lines 181 and 143.

The DC connection circuit 108 includes an inductance L1 and a resistance R1.
0, and only a constant DC current flows.

FIG. 4 is a block diagram showing a specific example of the dial signal generation circuit 112.

Reference numeral 113 denotes a dial type setting circuit for externally setting the dial type to be a pulse signal or an MF multiplied signal according to the type of exchange of the subscribed communication line.

Reference numeral 201 indicates that the signal line 150b that transmits a control signal included in the information line 150 that transmits a dial signal is in an active state (H>
This mode storage circuit stores the output of the dial type setting circuit 113 and outputs the state to the signal line 202.

203 outputs the state of the signal line 202 as it is to the signal line 204 when the signal line 150C that transmits the control signal included in the information line 150 that transmits the dial signal is not in the valid state (L), and the signal line 150C When the control signal is in the valid state (hl), regardless of the state of the signal line 202, the mote control circuit outputs a mode signal that is output as an MF multiplier signal dial signal.

20b temporarily stores the dial number signal from the information line 15Oa that transmits the dial number signal among the signal lines 150 that transmit the dial signal, and controls the dial intermittent time, pause time, etc. to match the specifications of the exchange. This is a dial control circuit that performs the following.

A dial 207 generates a dial pulse train according to the dial number on the information line 206 outputted from the dial control circuit 205 and sends it out through the signal line 212, and controls the contact circuit 106 through the signal line 209.・It is a pulse generation circuit.

Reference numeral 208 is an MF signal generation circuit that generates a dial signal based on an MF multiplied signal in accordance with the dial number on the information line 206. 211 outputs the dial pulse train on the signal line 212 to the signal line 148 according to the control information on the signal line 204, and at the same time, the signal line 209 outputs a signal indicating that the dial pulse train is being outputted via the signal line 147. This is a dial signal output selection circuit that selects whether to apply the signal to the contact circuit 106 or to output it to the MF multiplied signal signal line 149 on the signal line 210.

FIG. 5 is a block diagram showing a specific example of the modulation/demodulation circuit 114.

301 transmits transmission data, reception data, and control signals (transmission request, transmission enable, carrier detection output, etc.) to the information line 1.
This is a control circuit for communicating with the main control circuit 118 via 53.

302 is a modulation circuit for sending out transmission data sent via the signal line 311. 303 is the signal line 31
This is a filter circuit for limiting the frequency band of the transmission signal sent from the modulation circuit 302 via the modulation circuit 2.

304 is an amplification circuit for amplifying the transmission signal sent via the signal line 313. R20 is signal line 140
, 141 is a resistor for impedance matching with the communication line to which it is connected.

307 is a received signal amplification circuit. 306 is a signal line 317 for attenuating out-of-band noise included in the received signal.
This is a filter circuit inserted between and 316. 3
05 is a demodulation circuit, and a demodulation signal output from the demodulation circuit is applied to the control circuit 301 via a signal line 315. 30
A carrier detection circuit 8 applies its carrier detection signal to the control circuit 301 via a signal line 318.

In the case of transmission, the modulation/demodulation circuit 114 receives a transmission request signal from the main control circuit 118 by the control circuit 301, returns a transmission enable signal if the transmission is possible, and sends the next transmission data to the modulation circuit via the signal line 311. Pass it to 302. In the case of reception, the control circuit 301 passes the carrier detection signal received from the carrier detection circuit 308 via the signal line 318 to the main control circuit 118 when it is not in the transmission request state, and
A demodulated signal received from subsequent demodulation circuit 305 via signal line 315 is passed to main control circuit 118 as received data.

Signal transmission at this time is performed via the information line 153. Further, 155 is a power line (for example, 5Vl) that supplies current to the control circuit 301. 154 is a power line that supplies current to the control circuit 301.
This is a power line for supplying power to circuits other than the control circuit 301 among the constituent circuits of No. 4, and is used to handle analog signals.
55 supply voltage (eg, 12V). Note that the modulation/demodulation circuit 114 in FIG. 5 has a configuration assuming half-duplex communication, but it goes without saying that even if it is a high-performance modulation/demodulation circuit capable of full-duplex communication. , does not interfere with the operation of this data input device.

FIG. 6 shows the operating portion of this data human-powered device. 401 is a screen that displays patterns such as characters generated by the display circuit 122, 402 is a key for instructing the main control circuit 118 to communicate (hereinafter referred to as communication key), and 403 is a screen for displaying this data. A menu display instruction key (hereinafter referred to as menu key) is used before sequentially displaying the operation names of a plurality of operations prepared on the input device, and 404 is a menu display instruction key (hereinafter referred to as menu key), which is used when the main control circuit 11B stops displaying ( This is a key (hereinafter referred to as the OFF key) that instructs the user to enter the low power consumption state.
is a control key that activates the main control circuit 118 to become active.

406 is a key used to input numerical data or a telephone number (hereinafter referred to as numeric key), and 407 and 408 are keys used to return or advance the displayed content on the screen (hereinafter referred to as scroll key). 409 is a correction key for numerical data on the screen, 410 is a key for returning from a data input state to a menu selection state (hereinafter referred to as a return key), 4
Reference numeral 11 denotes a key (hereinafter referred to as an execution key) for instructing writing of displayed data into the RAM 125 and memory card 127.

The input key circuit 121 in FIG.
The circuit corresponds to 71 to Rix array and is key-scanned by the main control circuit 11B.

FIG. 7 is a circuit diagram showing a specific example of the interface circuit 124 and the memory card 127.

501.502. and 503 are respectively an address signal buffer circuit for specifying the address (data storage location) of the memory card 127, an input/output data signal buffer circuit for the memory cart 127, and an input/output control circuit for the memory card 127. This is a control signal buffer circuit.

504 is a storage circuit built into the mail card 127. 505 is a backup battery when the memory card 127 is removed from the data input device. 506 is the power supply line 17 to the backup battery 505
This is a diode for blocking current from flowing from 8 to 8. A connector 507 allows the memory card 127 to be inserted into and removed from the data input device.

Next, to explain the operation of the circuit shown in FIG. GND line), the main control circuit 118 makes the control signal sent via the signal line 512 inactive (l-),
For this purpose, three types of buffer circuits 501, 502. and 50
3 is the information line 52 regardless of the state of other control signals.
1° Information line 522 for data signal. and a signal line 523 for read control. The input control signal line 524 is disconnected, thereby preventing the operation of the circuit on the main control circuit 118 side from being disturbed by noise etc. mixed in from the connector 507.

When the memory card 127 is inserted into the connector 507, the detection line 164 for detecting whether or not the memory card is installed is connected to the common signal line 526, and the main control circuit 11B sets the control signal on the signal line 512 to a valid state ( H>, information lines 511 and 521 for address signals, information lines 513 and 522 for data signals, and signal line 51 for read control signals indicating data read timing of main control circuit 11B.
5 and 523. And signal lines 516 and 524 for write control signals indicating data write timing are connected, respectively. Furthermore, regarding the input/output data signal buffer circuit 502, depending on the state of the signal line 514, the main control circuit 11
8 is in the read state, the data signal is directed from the data signal information line 522 to the data signal information line 513, and when the main control circuit 118 is in the write state,
The data signal is controlled to be transmitted in the opposite direction to that when reading.

The interface circuit 124 is powered by the auxiliary battery 1.
Power line 172 backed up by 28 (Figure 1)
Even when the power supply 117 (Fig. 1) is out of power and the signal line 512 becomes inactive (L),
The operation continues in the same manner as when the memory card 127 is not inserted into the connector 507 as described above, and the backup battery 505 built into the memory card 127 is connected to the resistor R3.
0, R31 (in order to put the memory circuit 504 into the memory retention state, it is necessary to pull up the read or write control terminal to the power supply potential), or discharge through the information line 521 for the address signal or the data signal. This prevents discharge from occurring through the information line 522.

Note that if a read-only storage circuit (hereinafter referred to as ROM) is used as the storage circuit 504 in the memory card 127, the battery 505 becomes unnecessary, and therefore the power supplied to the interface circuit 124 is backed up by the battery. There's no need to be there. Further, as a matter of course, since there is no write operation from the main control circuit 118, the signal lines 516 and 524 for write control and the signal line 514 for control signals that control the direction of data signals are no longer necessary.

FIG. 8 is a circuit configuration diagram showing a specific example of the clock circuit 126.

550 is a clock oscillation circuit, 551 receives the clock output of the clock oscillation circuit 550 via a signal line 560,
A counter circuit that generates the year, month, day, hour, minute, and second; 552 is a control circuit that exchanges time data with the main control circuit 11B via the information line 168; 553 is a control circuit that has a time data comparison function and is connected to the main control circuit 11B; An alarm circuit provides an activation signal through a signal line 167, and 172 is a power line for supplying power without power outages.

To explain the operation of the time cutting circuit 126, first, the main control circuit 1
A real time data signal received from 1B via the information line 168 is applied via the information line 561 to the counter circuit 55.
1 is reset, and based on that time, the counter circuit 551 counts up and generates time data of year, month, day, hour, minute, and second. The time data is supplied to the control circuit 552 via the information line 562 so that the main control circuit 118 can refer to it as needed, and is also supplied to the alarm circuit 553. On the other hand, the alarm circuit 553 is given alarm time data in advance from the main control circuit 118 via the information line 563, and when the alarm time data and the time data applied via the information line 562 match, a start signal 167 is sent to the alarm circuit 553.
is in the valid state (H).

FIG. 9 is a circuit configuration diagram showing a specific example of the power supply circuit 119.

601 is a comparison reference voltage generation circuit; VRI is its output;
02 is a voltage comparison circuit that outputs to the signal line 169. 603
604 is a voltage comparison circuit which outputs to the signal line 170. 606 is a voltage stabilization circuit that outputs to the power supply line 158. 607 is a comparison reference voltage generation circuit, and VR3 is the output thereof. 608 is a voltage comparison circuit that outputs to the signal line 171. Reference numeral 605 is a contact circuit for controlling the current supplied to the voltage stabilizing circuit 606.

Next, the operation of the power supply circuit 119 will be explained.

The comparison voltage VR1 is set to be a voltage slightly higher than the battery end voltage when a battery is used as the power supply circuit 117. This indicates that the battery is in a state (one week before the end of its life). Comparison voltage V
R2 is set to be equal to the battery final voltage,
The output of the voltage comparator circuit 604 on the signal line 170 is a battery life end warning to the main control circuit 118, and this signal causes the main control circuit 118 to enter a standby operation and continue in that state thereafter. Comparison voltage VR3 is auxiliary battery 12B
The output voltage of the voltage comparator circuit 608 on the signal line 171 is applied to the contact circuit 605 to cut off the power supply and act to prevent the power supply line 158 from being supplied with power. Then, switch to power supply from the auxiliary battery.

The sakuramochi of this power supply line 158 will be further explained. The contact circuit 605 consists of a contact portion that performs cherry mochi between the power supply line 156 and the power supply line 610, and a control portion that controls the contact portion. and the output of the voltage comparator circuit 608 applied via the signal line 171. Therefore, if a battery (main battery) that can output an output higher than the final voltage is installed as the power supply 117, the signal line The output of the voltage comparison circuit 604 of 170 becomes high level, and the contact circuit 605 becomes conductive. Therefore, the voltage comparison output of the voltage comparison circuit 608 outputted via the signal line 171 also becomes high level.

After that, when the battery voltage of the power supply 117 drops below the final voltage VR2, the voltage comparison output of the signal line 170 becomes low level, but since the battery voltage does not drop suddenly at that point, the voltage of the signal line 171 The output of comparison circuit 608 remains at a high level, and contact circuit 605 maintains a conductive state.

Furthermore, the battery voltage of the power supply 117 drops and the voltage stabilizing circuit 6
When the output of 06 becomes lower than the comparison voltage VR3, the signal line 17
Since the voltage comparison output outputted to the terminal 1 becomes low level and the contact circuit 605 becomes non-conductive, the power supply line 158 quickly becomes a non-output state.

The reason why the power supply line 158 must be brought into a non-output state quickly is that in FIG.
The power source is a power line 1 backed up by an auxiliary battery 128.
72, and these three types of buffer circuits use 0MO8 (D complementary metal oxide semiconductor) logic elements as actual circuit elements, and the high level of their inputs is near the power supply voltage. , 0N10FF operation is performed at the low level near the common signal line (so-called GND) level, and if the input signal level is at an intermediate level, a large through current will flow.

If the power line 158 were to drop slowly as the battery wears down, the voltage on the power line 172 would keep the input signal level of the interface circuit 124 at the intermediate level for an extended period of time, causing the backup The auxiliary battery 128 (FIG. 1) will quickly become exhausted.

Note that the common line 612 in FIG. 9 is omitted and not shown in FIG. 1. Further, the input of the interface circuit 124 is connected to the GND line through a pull-down resistor, and is fixed at the GND level when the power line 158 is in a non-output state.

FIG. 10 is a circuit configuration diagram showing a specific example of the boost power supply circuit 1]5 that characterizes the present invention.

660 is a power supply contact circuit controlled by the main control circuit 118 through the signal line 157, and only during communication.
By connecting the power lines 156 and 661, unnecessary power consumption is prevented, and this is particularly effective when a battery is used as the power supply circuit 117. 650 is a comparison reference voltage generation circuit, 651 is a voltage comparison circuit, 652 is a square wave oscillation circuit, 653 is a logic inversion circuit, 654 is an AND circuit, 655, 656, 657 and 658 are junction circuits,
659 is a voltage stabilization circuit. The operation of these circuits will be explained below.

The main operation of the boost power supply circuit 115 shown in FIG.
59 outputs a constant voltage to the power supply line 154, and in order to further increase the voltage conversion efficiency, the input power supply line 6
The purpose is to select whether to boost the voltage twice or three times depending on the voltage of 61. The output VR4 of the comparison reference voltage generation circuit 650 is set to a voltage value that allows the voltage comparison circuit 651 to detect the input voltage when the output voltage during the double boost operation becomes lower than the desired output voltage. The contact circuit 655 is conductive when the input signal of the signal line 664 is at a low level, and becomes non-conductive when the input signal is at a high level. When the input signal of 664 is low level, it is non-conductive and when it is high level, it is conductive. Contact circuit 6
57 operates similarly to 655, and contact circuit 658 operates similarly to 656.

In the three-way boost operation, when the contact circuits 656 and 657 are first conductive and the contact circuits 655 and 658 are non-conductive, the power supply line 66
1 → diode D50 → capacitor C50 → disconnection circuit 6
56→common line 662, capacitor C50 is charged. Next, when the contact circuits 655 and 658 are conductive and the contact circuits 656 and 657 are non-conductive, the path is the power line 661 → disconnection circuit 655 → capacitor C50 → diode D51 → capacitor C51 → disconnection circuit 658 → common line 662. The capacitor C51 is charged to twice the voltage of the input terminal (more precisely, the voltage after subtracting the voltage drop in the junction circuit and the diode). Next, when the state of each contact circuit returns to the same state as the beginning, the power supply line 661→
Connection/disconnection circuit 657 → Capacitor C51 → Diode D52
→ Capacitor C52 → Charge the capacitor C52 to a voltage three times the input voltage via the common line 662 path (more precisely, the voltage after subtracting the voltage drop in the Sakuramochi circuit and the diode). Thereafter, the above operation is repeated.

The double boost operation is performed when the input of the AND circuit 654 (output of the voltage comparator circuit 651) applied via the signal line 663 becomes low level, and the sakuramochi circuits 657 and 658 are controlled to a static state. , was carried out first, Sakuramochi circuit 655
When C50 is non-conductive and 656 is conductive, capacitor C50
Charge up to the input voltage. Next, when the Sakuramochi circuit 655 is conductive and 656 is non-conductive, the capacitor C50 is connected to the input voltage.
The voltage obtained by adding the voltage accumulated in
is the voltage of diodes D51 and D52 during double boost operation.
(This is a bypass diode to halve the voltage dropped by two diodes.) This operation is repeated thereafter.

Next, the efficiency of the boost power supply circuit 115 will be explained using a specific example. Input voltage is Vi1 Desired output voltage is V. , the diode forward drop voltage is Vd, and the Sakuramochi circuit 655~
Ignoring the voltage drop of 658, the above-mentioned comparison voltage VR
4 is the desired output voltage V when the output voltage 2Vi-2Vd is doubled. The value of Vi when it becomes equal to (Vo +2 Vd) / 2. Here Vi
=5~10VXvo=12V.

When vd = 0.6V, VR4 is 6.6V, so when the 2-fold boost is Vi = 6.6 to 10V, the 3-fold boost is Vi
=5 to 6.6V.

If the load current is ■, the output efficiency is Vo-1 when the load is doubled.
/ (2V・-1) -v. / (2Vi),
V when boosting the voltage by 3 times. /(3Vi), so the maximum output efficiency of this circuit is 12/(2X6.6) when the voltage is doubled.
-0,9,When increasing the voltage by 3 times, 12/ (3x5)-0,8
Therefore, the minimum efficiency is 12/ (2x10) = 0.6.3 times 12/ (
3X6.6>-0.6.

By the way, as a method for realizing the function of the boost power supply circuit 115,
A switching type power source using an inductance element is considered, but this method controls the switching time by negative feedback control, and the efficiency is said to be limited to about 0.7. In addition, power supplies using this type of switching generally involve sudden and large current changes, which generates large noise from the wiring, and it is difficult to remove spike noise contained in the output. Modulation/demodulation circuit 114 (Figure 1) that handles signals such as
It is unsuitable as a power supply circuit.

In the step-up power supply circuit explained in FIG. 10, by inserting a resistor (not shown) in series with capacitor C50 or capacitor C51, the charging current can be changed smoothly, and the noise level can be controlled by the modulation/demodulation circuit. This can be suppressed to a level that does not interfere with the operation of 114. In reality, the resistors are unnecessary because the sakura mochi circuits 655 to 658 have a resistance force when they are conductive.

Furthermore, the reason why the system is configured to switch between double boosting and triple boosting will be described. The data input device according to the present invention uses +5V stabilized by a series regulator as the power supply voltage of the main control circuit 118 (the series regulator is used because it consumes less power during standby). Therefore, the output voltage of the power supply 117 must be +5V or higher, and the
Use one with an output voltage of ゜5V, and set the final voltage to 0゜9V.
Therefore, 6 batteries are required. The initial output voltage when using 6 units is approximately 10V at maximum, so 5
．． Regarding the range of 4V to 10V, as in the specific example above,
In order to obtain maximum output efficiency, it is best to switch between double boost and triple boost. Further, if selected in this manner, whenever the main control circuit operates in the range of 5.4 to IOV, +12V power is supplied to the modulation/demodulation circuit 114, thereby guaranteeing the operation of the present data input device. Here, VR2 in FIG. 9 is 5
．． It is selected as 4V.

FIG. 11 is a circuit configuration diagram showing a specific example of the main control circuit 118.

701 is a timer circuit that periodically outputs a key scan signal to the signal line 720. 702 reads the key press state of the input key circuit 121 (FIG. 1) every time the key scan signal applied through the signal line 720 becomes valid (H), and the signal is applied through the signal lines '169 and 170. This is an input monitoring section that reads the state of the voltage drop monitoring output of the power supply or the mounting state of the memory card 127 via the detection line 164.

703 receives a press signal of the control key 120 (FIG. 6) via the signal line 159, or receives a start signal output from the clock circuit 126 via the signal line 167,
When it is in the valid state (H>), it is a starting section that sends out a starting signal to the signal line 747 for starting the operation of the overall control section 708 included in the main control circuit 118.

708 is based on the control input signal including the key press signal sent by the information line 721 from the input monitoring unit 702.
This is a general control unit that starts various control units described below, performs post-processing after the various control units complete their operations, and performs control to return to a standby state.

704 is a signal line 146 according to instructions from the general control unit 208.
The Sakuramochi circuit 104 is turned on through the signal line 146 to close the DC circuit of the communication line, and at the same time, the Sakuramochi circuit 1 is turned on through the signal line 146.
29 is turned on, the polarity reversal detection circuit 101 is operated, a dial signal is output via the information line 150, and the communication sound is supplied to the speaker 111 (FIG. 1) for monitoring the communication sound. This is the line control unit that performs this control.

70b is connected to the signal line 157 according to instructions from the general control unit 708.
After controlling via the stomach power supply circuit 115 and the Sakuramochi circuit 116 and supplying power to the modulation/demodulation circuit 114, the RAM
125 through the information line 166, outputs it to the modulation/demodulation circuit 114 through the information line 153, performs communication control according to a predetermined communication procedure, and completes sending of the transmission data. After that, the real time data is received from the center side and stored in RAM1.
This is a communication control unit that performs writing operations to the 25.

706 corrects the counter circuit 551 (FIG. 8) included in the clock circuit 126 according to the instructions from the general control unit 708, if there is new real time data, and also corrects the counter circuit 551 (Fig. 8) included in the clock circuit 126 if there is new alarm time data. 553
(FIG. 8) is a time setting unit that sets the time via an information line 168.

707 is the general control unit 7 to which the signal is applied via the signal line 729.
In accordance with the activation signal from 08, the downstream control information stored in the memory card 127 is retrieved via the information line 165, and is copied to the RAM 125 via the information line 166.
This is a transfer control unit that outputs a return signal indicating completion of copying via a signal line 730.

709 is used to receive instructions from the general control unit 708 via the signal line 731 and write initial data to the RAM 125 via the information line 166, and to instruct the user on input procedures when starting the operation of this data human-powered device. This is an initial setting section that performs display control and initial data change control when a memory card 127 having special control information for changing initial data is inserted.

710 receives instructions from the general control unit 708, retrieves the guidance information stored in the memory card 127, displays it through the display circuit 122, and transfers data input based on the guidance information to the RAM 125 and the memory card 1.
This is a registration control unit that registers in the upstream data storage section of No. 27.

711 performs a search for uplink data already registered and stored in the RAM 125 in the input order or a direct search by specifying a number, regardless of whether it has been sent or sent, under the instructions of the general control unit 708, and displays the data, and performs a confirmation operation. This is a search control unit that performs operations for the purpose of.

712 reads the expiration date control information stored in the currently installed memory card 127 via the information line 165 according to instructions from the general control unit 708, and also reads the current time from the clock circuit 126 via the information line 16B. read through,
If the current time is within the validity period, it is considered valid, and if it is not, it is invalidated.
This is a card matching unit that performs an operation to notify the user via the signal line 740.

713 not only passes symbols, numbers, and character codes to the display circuit 122 via the information line 161, but also receives operational warnings and voltage drop monitoring outputs applied via the signal lines 169 and 170. The display control section receives a warning or a warning in the communication state as a control code through the information line 745, and transmits a warning message corresponding to the control code to the display circuit 122 through the information line 161.

721 is an information line that transmits key press information or a voltage start signal, and 741 is an information line that transmits symbols, numbers, and character codes to be displayed. 168 is an information line for transmitting time data; 165 is an information line for inputting and outputting data to and from the memory card 127; 166 is a RAM 125
This is an information line for inputting and outputting data.

FIG. 12(a) shows the internal configuration of the RAM 125.

801 is a control memory for temporarily storing control information (so-called flags) when inputting and outputting information between each control unit in the main control circuit 118; 802 is a control memory for temporarily storing control information (so-called flags) for transmitting information through the modulation/demodulation circuit 114; A communication buffer 803 is used to temporarily store data and send the same data again in the event of a retransmission request from the center due to an error during communication. 804 is a temporary memory part for the alarm time; ε305 is a permanent memory part for the user number input at the time of initial setting;
06 is a temporary storage part of the communication center telephone number stored in the memory card 127, and 807 is the item configuration (
The portions 808 and 809 that temporarily store the data in FIG. 12(b) are backup information storage portions that store registered transmission data.

Hereinafter, to further explain the backup information storage section, the data for transmission created by referring to the currently installed memory card 127 will be referred to as the current backup information, and the data created last time will be referred to as the previous backup information. For example,
The backup information storage part 808 stores the backup information this time, and the storage part 8
09 stores the previous backup information, and if the memory card 127 whose content is information with a new deadline (current backup information) is inserted, the storage part 8
08 is the storage part for the previous copy information, and the storage part 809 is the storage part for the current copy information, and the previous and previous copy information stored in the storage part 809 is erased.

In other words, the latest information storage portions are alternately replaced.

Conventionally, this backup information was recorded and output on paper using a printer, but compared to expensive and consuming printers, this system uses a RAM 125 made up of semiconductor memory and a display circuit 122 with no moving parts. The method of outputting backup information is superior in terms of durability and cost and volume.

FIG. 12(b) shows the storage structure of individual items stored as backup information 808 or 809.
1 is the product number (hereinafter referred to as the product number), 822 is the specific product name (hereinafter referred to as the product name), 823 is the unit price of the product, and these are data obtained by referring to the memory card 127. 824 is the user's The number of ordered items entered by (hereinafter referred to as the input number).

>, 825 is the communication control unit 70 to identify whether the transmission has been completed (that is, whether it has been received by the center side or not).
This is an identification symbol written by 5.

FIG. 13(a) explains the internal structure of the memory cart recess 27.

841 is a part that distinguishes whether the storage circuit 504 of the memory card 127 is readable or only readable; 842
843 is a part that stores the expiration date, that is, the start date and end date of use, and 843 is a part that specifies the sending time when this data input device automatically sends data to the center (see Fig. 12). a) Wake-up time 804 is a copy of this data), and 844 is a part where the telephone number of the center to which the transmission data is sent is stored.

845 is item configuration information 8 that defines the following three types of information, namely, the number of digits in the product number 821, the number of characters in the product name 822, the number of digits in the unit price 823, and the number of digits in the manual quantity 824.
07 and the storage start number of the product menu (which will be explained next).
846, 847, 848, and 846, 847, 848, and 8.
49 is a part for storing a product menu, and 851 stores upstream manpower information including the number of items to be ordered, that is, information consisting of a product number 871 and an input number (number of items to be ordered) 872 as shown in FIG. 13(C). This is the part for.

852 is the old number permanently stored in RAM 125 @
It is a copy of 805, and the part used as an identification number for uplink information, and 853 stores information indicating that the battery in use is near the end of its life (the detection means is explained in Fig. 9). This is the part to do.

Here, the parts 846, 847.
848 and 849 will be further explained. Each item on the product menu is numbered 8 as shown in Figure 13(b).
61, product name 862, single (i11i863).One variety includes many items, and each item is stored by type, such as vegetables, fish, meat, juice, and daily necessities. , electrical appliances, books, etc.
Within each variety name, for example, in the case of vegetables, each item is listed, such as cabbage, carrot, lettuce, green pepper, and onion, and each item is numbered (product number) and labeled in order. The product name 846 or product name 884B in FIG. 13(a) is the part C where the product name is stored.
゛, Type menu 8847 or type menu B84
9 is a part C' where each of the above items is stored.

In addition, in FIG. 13(a), only two products A and B are shown, or the structure is actually configured to be able to store many more products. As the menu head address, for example, the address where product name 846 or product name B 848 is stored is stored, and the number of items for each product type is also stored.

As can be seen from the above description, the product name storage address and the number of items for each product type can be changed, and the configuration of the product menu is changed every time the memory card 127 is changed.

Above, the overall configuration is shown in Figure 1, and Figures 2 to 13.
Although we have explained the operation and function of each circuit using the diagram,
Next, the functions of this data input device that organically combine these operations will be explained.

The basic functions of this data input device are the memory card 12
The user inputs the order quantity for each item while referring to the product menu (downward guide information) stored in 7, and when the input operation is completed, the user presses the communication key 402 to transmit the data to the center.

The functions required in these processes are:
8-1 is an initial setting function for registering a user number, and secondly, while referring to the product menu stored in the memory card 127, the scroll keys 407 and 408 (
6), the card reference input function is used to input the order quantity after calling up the screen 401. Thirdly, after learning the product number by referring to a printed matter such as a catalog, directly inputting the product number and entering the desired number on the screen 401. A catalog reference input function to call up the product name and enter the order quantity; fourth, a current confirmation function to check the current copy of the entered copy information; and a previous confirmation function to check the previous copy. 5, the communication function consists of a function to dial the center, a function to send only unsent information among the recorded information and mark it as a sent symbol, and a function to receive real time data.
04 and automatically starts the communication function at that time. Seventhly, although it is not an essential function of the data input device, an amplifier circuit 110 for monitoring the signal sound. There is also a manual communication function in which dialing is performed manually using a means consisting of a speaker 111 and a numerical value is input while listening to the response voice of the other party. This manual communication function can be used for checking deposit balances, which is one of the banking services.

FIG. 14(a) explains how to select each of the above functions (excluding the communication function).
When you press 3, a screen 911 is displayed, and when you press the scroll key 408, operation menus 912 and 913 are displayed in sequence.
, 914 and 915 are displayed. If the scroll key 407 is pressed at this time, the images are displayed in the reverse order.

While the desired operation menu is displayed, press the execution key 4.
Pressing 11 moves to each function operation.

If the memory card 127 is not installed or if the memory card 127 whose expiration date has expired is installed, the screen 916 or 917 is displayed for a short time as shown in FIG. 14(b), and then the screen 918 is displayed. Below, functions that do not require the installation of a memory card are displayed.

To select the initial setting function, press the menu key 403, then press menu number 1, as shown in FIG. 14(C).
(Menu numbers are M2 and M3 at the bottom left of each screen.)
... and is configured so that not only the initial setting function but also each operation menu can be directly selected by pressing the menu key 403 and the menu number) 1. These controls are performed by the general control section 70B. (FIG. 11), and when the operation menu is selected, a start signal is sent to the control section that executes each function. Immediately after the menu key 403 is pressed, the general control unit 708 checks whether a memory card is installed or not, and if it is installed, the card verification unit 712 checks whether the expiration date of the memory card 127 has been added. is activated via a signal line 739 to perform a confirmation operation, and upon completion of the operation, the card verification section 712 outputs a return signal via a signal line 740.

The initial setting function is a function that is controlled by the initial setting unit 709 when a starting signal is output from the general control unit 708 via the signal line 731. ) screen 921 will be displayed to prompt you to enter your user number. Next screen 922, 923
When the user number is input, it will be displayed in order, as shown in
Next, when the execution key 411 is pressed, it is stored in the RAM 12.
5 in the storage location 805. Thereafter, even if an activation signal is input via the signal line 731, a warning message indicating that the initial settings have been completed is displayed and the user number cannot be changed. After the operation is completed, a return signal is output via the signal line 732, and control is returned to the general signal section 708.

The card reference manual function is carried out by the signal line 7 from the general control unit 708.
The function is controlled by the registration control unit 710 that receives the activation signal via the signal line 733, and when the activation signal is received via the signal line 733, the downlink control information 845 of the memory card 127 is
(Fig. 13(a)), the location where the product name is stored is known, and the content stored in that location is used as the product name as it is and is passed through the display control wholesaler 713 as shown in Fig. 15(a).
The screen 930 is displayed. Next, when the Sufloror key 408 is pressed, the location where the next product name is stored is found by referring to the down control information 845, and the screen 931 is displayed in the same manner as above. Similarly, if a product name storage location exists, screens 932, 933, and 934 are displayed.

Next, the desired product type is displayed, and when the execution key 411 is pressed in screen 930, for example, the display moves to each item, and individual item information is displayed as shown in screen 935 (FIG. 15(b)). be done. Thereafter, when the scroll key 408 is pressed, individual items are sequentially displayed as shown in screens 938 and 939.

Next, when the desired item is displayed and the numerical key 406 is pressed, the numerical value is displayed at the order quantity display position 943 (FIG. 15 (C)) and at the same time the total amount display position 944 (
The total amount is displayed in FIG. 15(C)). Next, when the execution key 411 is pressed, all the information except the total amount displayed on the screen is written into the current copy information storage section (80B or 809) of the RAM 125. Next, the type 841 of the memory card 127 is generated, and if the memory card 27 is readable/writable (RAM), the product number and order quantity are stored in the upstream information storage section 85 of the memory card 127.
Written to 1. When the writing is completed, the next item is displayed, that is, the screen 937 in FIG. 15(b) is displayed.

To return from the individual item display state to the product type display state, the return key 410 may be pressed. Thereafter, by displaying another product type and pressing the execution key 411 to display other individual items, it is possible to enter the order quantity in the same manner as above.

FIG. 15(C) shows the screen configuration for item display, where 940 is the product number, 941 is the product name, 942 is the unit price,
943 is the number of ordered items, 944 is the total amount, and 945 is a part for displaying whether or not it has been sent during the confirmation function operation, which will be explained later. The registration control unit 710 uses the menu key 40
When 3 is pressed, a return signal indicating the end of the operation is outputted via the signal line 735.

The catalog reference input function is a function controlled by the registration control unit 710 that receives an activation signal from the general control unit 708 via the signal line 734. When the activation signal is received via the signal line 734, the catalog reference input function ) is displayed on the screen 946 to prompt the product number manual.

When a product number is input, a product number that matches the product number is searched from the product menu and displayed.

Thereafter, the RA is
M125 and memory card] 27 can be read and written (RA
M), the order data is written in the memory cartco 27, and when the process is finished, the screen returns to the screen 946.

The confirmation function for this time is from the general control circuit 708 to the signal line 73.
This is a function controlled by the search control unit 711 that receives a start signal via the signal line 736, and when the search control unit 711 receives the start signal via the signal line 736, The information at the beginning of .> stored in either the valve reserve information storage section 80B or 809 is displayed as shown in screen 951 in FIG. 16, for example.

= 55 Next, when the scroll key 408 is pressed, screens 952, 953 and 954 are displayed in the order in which they were stored. Furthermore, when the user presses one of the numerical keys 406 and inputs the product number of the item to be confirmed, items that match the product number are directly displayed as shown in a screen 955.

Sent display part 945 in Fig. 16 (Fig. 15 (C))
Mark as sent! Items marked with are already sent to the center and marked as sent! Items on screen 954 without a mark indicate that they have not yet been sent to the center for some reason (for example, they were only stored in the RAM 125 but not sent, or could not be sent due to a communication error, etc.). .

This sent mark! 12(b) Identification symbol 82
5, and the communication control unit 705 manages the identification symbol 825. In addition to displaying the sent mark while the communication control unit 705 stores it as described above, if the item has already been sent, the product number of the item can be highlighted (
It may be displayed in a way that is easy for the user to understand, such as by displaying white characters.

The previous confirmation function is a function that performs the same operation as the current confirmation function regarding the previous copy information, and
8, the search control unit 711 receives an activation signal via the signal line 737. When the search is completed and the menu key 403 is pressed, the
Search control section 711 outputs a return signal.

As already explained, the manual communication function is used when receiving a bank's deposit balance inquiry service, etc.
In FIG. 4 (a), when the execution key 411 is pressed while the screen 915 is displayed, the overall control unit 708 outputs a start signal to the line control unit 704 via the signal line 723.The line control unit 704 Next, the contact circuit 104 is brought into conduction through the signal line 146, and the contact circuit 109 is brought into conduction through the signal line 151 to monitor the signal sound.

Next, the output of the input monitoring section 702 sent via the information line 721 is checked, and if there is a numerical key input, the numerical value is passed to the dial signal generation circuit 112. The dial signal generation circuit 112 outputs a dial signal to the communication line to which the signal lines 140 and 141 are connected by operating as described above.

Thereafter, the line control unit 704 monitors the output state of the polarity reversal detection circuit 101 that is output to the signal line 144, and when the polarity reversal occurs, the line control unit 704 sends a dial signal to the mode control circuit 203 of the dial signal generation circuit 112 by multiplying the MF by MF. Instructs to fix the mode to signal output. After that, speaker 1
If you follow the voice guidance from 11 and press the numerical keys, you can perform tasks such as checking your balance.

In the communication function, when the communication key 402 is pressed, an activation signal is sent from the general control unit 708 to the line control unit 704 via the signal line 722, and a dial signal is sent and the response of the other party (center) is confirmed. This is then performed by outputting an activation signal to the communication control unit 705 via the signal line 725.

However, if the alarm time (FIG. 12 (a>804>) is set to valid, the general control unit 708
I don't accept.

First, when the activation signal is output via the signal line 722,
The line control unit 704 looks at the output 145 of the line use detection circuit '103 sent out via the signal line 145, and if the communication line is not in use, makes the contact circuit 104 conductive.
If it is being used, subsequent work will be interrupted, a warning message will be displayed on the screen 401, and the process will return to normal. After the contact circuit 104 is made conductive, the contact circuit '109 is made conductive so that the user can monitor the communication sound, and then the center telephone number 806 stored in the RAM 125 (FIG. 12(a)) The telephone number is passed to the dial signal generation circuit 112 with reference to the .

After sending the dial signal, it is determined whether the other party (center) has responded by looking at the output sent from the polarity reversal detection circuit '101 via the signal line 144, and if it has responded, a return signal is sent via the signal line 724. , control authority is given to the general control unit 70
Return to 8. The overall control unit 708 continues to function as the communication control unit 7.
05 via the signal line 725. The communication control unit 705 first energizes the power lines 154 and 155 of the modulation/demodulation circuit 114 via the signal line 157, and then
Only the items that do not have the sent mark (in Figure 16) of the AM125's current receipt information are moved to the communication buffer 802 (Figure 12 (a)), and once the transfer is completed, the predetermined communication procedure is executed. Then, the contents of the communication buffer 802 are transmitted to the center through the modulation/demodulation circuit 114.

After that, when receiving a response signal from the center indicating that the reception has been completed, a sent mark is stored in the identification symbol storage section 825 of the item in the current copy information storage section corresponding to the item pulled out to the communication buffer 802. Furthermore, it receives real time data from the center and stores it in RAM12.
5, and a flag indicating that a new time has been received is stored in the control memory 801 (FIG. 12).
a)), a return signal is output via the signal line 726, and the control right is returned to the general control unit 708.

The overall control unit 708 continues to output a start signal to the time setting unit 706 via the signal line 727, corrects the counter circuit 551 of the clock circuit 126 to the real time (contents of the RAM 125 reception time storage section 803), and sets the time setting unit 706. 706 outputs a return signal via a signal line 728.

The automatic communication function copies the transmission time storage part 843 (FIG. 13(a)) of the memory card 127 and stores it in the RAM 125.
This is a function that refers to the wake-up time 804 above and automatically performs transmission at that time. The reason why the wake-up time is stored in the RAM 125 is to prevent the memory card 127 from being removed. Also, if the alarm time is stored in an invalid data format (for example, a time that does not exist), the automatic communication function will not work. The alarm time is always set by the integrated control unit 708 to the time setting unit 7, except when the integrated control unit 708 sets another time in the alarm circuit 553 for other purposes (for example, when using it as a timer).
06.

When the actual time and the alarm time match in the alarm circuit 553 and an activation signal is outputted via the signal line 167, the activation unit 703 operates and the overall control unit 708 is activated as described above. The overall control unit 708 receives the activation signal from the control key 120.
After confirming that the communication key 402 is not
The same operation as the communication function described above is performed, omitting the press monitoring. However, in this case, since the line control circuit 704 is activated by the activation signal applied via the signal line 746, the contact surface circuit 109 is not made conductive and no monitor sound is emitted from the speaker 111. Further, the operation does not start if all copy information has been transmitted.

The first embodiment according to the present invention described above is for the case where the memory card 127 is used, but similarly to the RAM 125 instead of the memory card 127,
A method (second embodiment) is conceivable in which a fixed storage means (hereinafter referred to as 2RAM) is provided inside the device and the downlink control information, product menu, etc. are received through a communication line. This second embodiment will be described below.

In the second embodiment, the second RAM includes the memory card 127 and the interface circuit 1 in FIG.
24, and the main control circuit 118 is connected to the signal line 1.
65. As a power source, there is no power outage 1
72 is connected.

The internal configuration is shown in FIG. 13(a) as downstream input information 85]
, except for the user number 852 (the same information is stored in the RAM 125). The battery information 853 is sent together when the copy information in the RAM 125 is transmitted to the center, and the type 841 stores discrimination information indicating that it is read-only. To receive downstream information such as product menus, press the menu key 403 and then press the communication key 402 to send the information to the general control unit 7.
08 activates and dials the line control unit 704 in the same manner as previously described, and activates the communication control unit 705. This is different from the activation signal applied via the signal line 725 in FIG. 11 (not shown). (activated by another activation signal), and is performed according to a predetermined reception procedure.

Note that in the case of the second embodiment, downlink information is also transmitted in addition to uplink information using a communication line, so when the number of users increases, the traffic burden on the communication line increases. Therefore, the transmission time 843 in FIG. 13(a) should be set for each user at a time during a time period (for example, at night) that will not be a burden on the traffic. If this time is set, the communication key 402 will not be accepted. ), reducing the above burden.

[Effects of the Invention] As explained above, according to the present invention, power is supplied to the step-up power supply means immediately before the start of communication, so there is no unnecessary power consumption and battery life is reduced. Since the voltage is switched between double pressure and triple pressure depending on the voltage state, efficiency is improved.

Furthermore, since the current change can be made gradual, there is also the effect of reducing the amount of noise generated.

[Brief explanation of drawings]

FIG. 1 shows one embodiment of a data input device according to the present invention 64
- A circuit configuration diagram showing the entire example; FIG. 2 is the polarity reversal detection circuit shown in FIG. 1]01. Full-wave rectifier circuit 102, line use detection circuit 103. 3 is a circuit diagram showing a specific example of the contact circuit 104, and FIG. 3 is a circuit diagram showing a specific example of the contact circuit 104. Contact circuit 106. MF signal sending circuit 1
07 and a circuit diagram showing a specific example of the DC closing circuit 108,
FIG. 4 shows the dial signal generation circuit 112 shown in FIG.
and dial type setting circuit ] 13, FIG. 5 is a circuit diagram showing a specific example of the modulation/demodulation circuit 1 ] 4 shown in FIG. 1, and FIG. Control keys 120 . FIG. 7 is an external view showing an example of the arrangement of keys and display screens in the input key circuit 121 and display circuit 122; FIG. 7 is a circuit configuration diagram showing a specific example of the interface circuit 124 and memory card 127 shown in FIG. 1; 8 is a circuit diagram showing a specific example of the clock circuit 126 shown in FIG. 1, FIG. 9 is a circuit diagram showing a specific example of the power supply circuit 119 shown in FIG. 1, and FIG. 1 is a circuit configuration diagram showing a specific example of the boost power supply circuit 115 shown in FIG. 1, FIG. 11 is a circuit configuration diagram showing a specific example of the main control circuit shown in FIG. FIG. 13 is an internal configuration diagram of the RAM 125 shown in FIG.
7, FIG. 14, FIG. 15, and FIG. 16 are diagrams for explaining various functions of the device shown in FIG.
FIG. 3 is a functional explanatory diagram showing the relationship between various key operations and contents displayed on the screen. 101... Polarity reversal detection circuit 102... High wave rectification circuit 103... Line use detection circuit 104, 106, 109° 116.123... Sakuramochi circuit 105... Dial/pulse sending circuit 107...・M
F signal sending circuit 108...DC closing circuit 110...Amplification circuit 111...Speaker 112
... Dial signal generation circuit 113 ... Dial type setting circuit 114 ... Modulation/demodulation circuit 115 ... Shoko power supply circuit 1
17...Power supply circuit 11B...Main control circuit 119
...Power supply circuit 120...Control key 121...
Human key circuit 122...Display circuit 124...Interface circuit 125...RAM 126...Clock circuit 12
7... Main card 12B... Auxiliary battery 173.174, 177... Diode 184.18
5... Capacitor 140-149, 151° 152.157, 159° 162.167.169-171° 180-183... Signal line 150.153, 160° 161.165, 166° 168.176...・Information lines 154 to 156, 158° 163.172, 175° 17B...Power line 164...Detection line 201...Mode storage circuit 203...Mode control circuit 205...Dial control circuit 207 ...Dial pulse generation circuit 208...M
F signal generation circuit 211...Dial signal output selection circuit 202.204
, 209° 210.212...Signal line 206...Information line 301...Control circuit 302
...Modulation circuit 303.306...Filter circuit 304.307...Amplification circuit 305...Demodulation circuit 308...Carrier detection circuits 311 to 318...Signal line 401...Screen 402...・Communication key 403
...Menu key 404...OFF key 406...Numeric key 407
, 408... Scroll key 409... Correction key 410... Return key 411... Execution key 501... Address signal buffer circuit 502... Input/output data signal buffer circuit 503... Control signal Buffer circuit 504...Memory circuit 505...Backup battery 506...Diode 507...] Connector 511
．． 512,514~516°523.524,526...Signal line 513.521,522...Information line 550...Clock oscillation circuit 551...Counter circuit 552...Control circuit 553...Alarm circuit 56
0... Signal lines 561 to 563... Information lines 601, 603, 607... Comparison reference voltage generation circuit 6
02.604,608... Voltage comparison circuit 605...
Sakuramochi circuit 606...Voltage stabilization circuit 610...
Power line 611.612...Common line 650...
Comparison reference voltage generation circuit 651... Voltage comparison circuit 652... Square wave oscillation circuit 653... Logic inversion circuit 654... AND circuit 655-658... Junction circuit 659... Voltage stabilization Circuit 660...Power supply disconnection circuit 661...Power line 662...Common line 663~
665...Signal line 701...Timer circuit 702...Input monitoring unit 703...Starting unit 704...
...Line control section 705...Communication control section 706...
Time setting unit 707... Transfer control unit 708... General control unit 709... Initial setting unit 710... Registration control unit 7]1... Search control unit 712... Card matching unit 713... -Display control unit 720.722-~740°746.74.7...Signal line 721.741.745...Information line.

Claims (2)

[Claims] (1) In a data input device for transmitting input data including at least a modulation/demodulation circuit and a main control circuit, which may be operated by receiving power supply from a main battery, the output voltage of the main battery is at a predetermined level. A battery voltage detection means for detecting that the voltage has fallen below the specified value, and a voltage boosting operation of 2 times when receiving power from the main battery, and 3 times when receiving a detection output from the battery voltage detection means. 1. A data input device comprising a step-up power supply means for performing a step-up operation. (2) The data input device according to claim 1, wherein the boosted power supply means receives power from the main battery only during communication.