JPH0767190B2 - Bar code remote control device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bar code remote control device, and more particularly to a bar code remote control device configured to perform stable operation with low power consumption.

[Conventional technology]

A barcode remote control device that reads a barcode and obtains a data signal, creates a remote control data signal based on this data signal, and transfers this remote control data signal to a host device such as a TV or VTR is equipped with a battery for power supply. In many cases, an auto power off circuit is provided to prevent wasteful consumption.

FIG. 2 is a block diagram showing a conventional configuration of this type of barcode remote control device. This barcode remote control device is composed of an auto power-off circuit 103, a reading processing unit 101, and a transfer processing unit 102. battery
21, a power switch 20 and a power detector 16 for detecting an ON operation of the power switch 20 are connected.

The auto power-off circuit 103 includes an OR circuit 11 and a counter circuit 1.
2, composed of a constant memory 13, a comparator 14 and a switch 15,
When the power switch 20 is turned on, the switching device 15 is turned on, and the power reset detector 16 outputs the first reset signal u to the OR circuit 11.
It is supposed to be input to. When the switching device 15 is turned on, the auto power off circuit 10 is turned on via the power line 35.
3. The reading processing unit 101 and the transfer processing unit 102 are connected so that power is supplied from the battery 21.

The reading processing unit 101 is composed of a reading start key input circuit 1, a switch 2, a reading start judgment circuit 3, a reading processing circuit 4 and an OR circuit 9, and a reading start key SW.
The operation 1 is connected so that the operation signal a is input from the read start key input circuit 1 to the read start determination circuit 3 via the switch 2. Then, by inputting the drive signal c from the reading start determination circuit 3 to the reading processing circuit 4, the reading processing circuit 4 reads the barcode and obtains the data signal d. It is adapted to be stored in the reading processing circuit 4.

Further, when the reading processing circuit 4 completes the reading processing of the bar code, the second reset signal 1 from the reading processing circuit 4 is connected so as to be inputted to the OR circuit 11 and the OR circuit 9.

The transfer processing unit 102 includes a transfer start key input circuit 5, a switch 6, a transfer start determination circuit 7, a transfer processing circuit 8, and an OR circuit 10.
Are connected to each other such that the operation signal e is input from the transfer start key input circuit 5 to the transfer start determination circuit 7 via the switch 6 by the operation of the read start key SW2. . When the drive signal g is input from the transfer start determination circuit 7 to the transfer processing circuit 8, the transfer processing circuit 8
Then, the data signal d is read from the read processing circuit 4, the remote control data signal h is created by the transfer processing circuit 8, and the remote control data signal h is transferred to the host device.

When the transfer processing circuit 8 completes the transfer of the remote control data signal h, the third reset signal k from the transfer processing circuit 8 is connected to the OR circuit 11 and the OR circuit 10.

In the barcode remote control device having such a configuration, when the operator turns on the power switch 20, the switch 15 of the auto power-off circuit 103 is turned on, and power is supplied from the battery 21 to the reading processing unit 101 and the transfer processing unit 102. Is started.

Then, the first reset signal u from the power detector 16 is OR
When the counter value 12 is input to the circuit 11 and the counter circuit 12 starts counting, and the count value p reaches a predetermined count value q (for example, 25 seconds) preset in the constant memory 13, the cutoff signal r is output from the comparator 14.
Is output, the switch 15 is turned off, and the reading processing unit 101
The power supply to the transfer processing unit 102 is cut off.

However, when the operator turns on the reading start key SW1 in the process of operating the barcode remote control device, the operation signal a is input to the reading start determination circuit 3 via the switch 2.

Then, when the reading start judging circuit 3 judges that the operation signal a is normal, the reading processing circuit 4 is actuated by the driving signal c from the reading start judging circuit 3, and the reading processing circuit 4 causes the bar. The code is read to obtain the data signal d, and the data signal d is stored in the reading processing circuit 4. When the reading processing circuit 4 completes reading the bar code, the second reset signal l is input from the reading processing circuit 4 to the OR circuit 11, so that the counter circuit 12 is reset and the counter circuit 12 Counting is started from the time point until the count value p newly reaches a predetermined count value q (for example, 25 seconds).

Next, when the operator turns on the transfer start key SW2, the operation signal e is input to the transfer start determination circuit 7 via the switch 6.

When the transfer start determination circuit 7 determines that the operation signal e is normal, the drive signal g from the transfer start determination circuit 7
Thus, the transfer processing circuit 8 operates, and the transfer processing circuit 8 takes in the data signal d from the reading processing circuit 4. The transfer processing circuit 8 encodes this data signal d to create a remote control data signal h, and transfers this remote control data signal h to the host device.

When the transfer processing circuit 8 completes the transfer of the remote control data signal h, the third reset signal k is input from the transfer processing circuit 8 to the OR circuit 11, so the counter circuit 12 is reset and the counter circuit 12 is reset. Starts counting from that point until the count value p newly reaches a predetermined count value q (for example, 25 seconds).

As described above, in the bar code remote controller shown in FIG. 2, of the first reset signal u, the second reset signal l and the third reset signal k, the reset input to the OR circuit 11 is finally input. After a predetermined time (for example, 25 seconds) from the signal, the power supply from the battery 21 to the reading processing unit 101 and the transfer processing unit 102 is cut off.

Therefore, for example, a large number of reading processes and their transfer processes can be performed with a margin without repeatedly operating the power switch 21, so that the barcode remote control device can be operated efficiently and smoothly. I can.

[Problems to be Solved by the Invention] In the above barcode remote control device, the data signal d is already output to the transfer processing circuit 8 when the transfer processing circuit 8 creates the remote control data signal h and transfers it to the host device. Read processing circuit 10 that has completed processing
Power is still being supplied from the battery 21 to 1 and wasteful power consumption is being performed.

When the reading start judging circuit 3 judges that the operation signal a is normal, the drive signal c is immediately inputted to the reading processing circuit 4, and the reading processing circuit 4 reads the bar code. But the power switch
When 20 and the reading start key SW1 are simultaneously operated, the reading operation is started before the reading processing circuit 4 is sufficiently warmed up, so that the reading operation may be unstable and erroneous reading may be performed.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems in a barcode remote control device, and its purpose is to prevent power consumption of a battery by stopping power supply to an unnecessary portion, thereby improving battery replacement intervals. The present invention provides a bar code remote control device capable of reliably transmitting a remote control data signal to a host device even with a battery that is being replaced, and eliminating erroneous bar code reading due to unstable operation at startup. Especially.

[Means for Solving the Problems]

To achieve the above object, the present invention provides a reading processing unit for reading a barcode and a data signal, a data signal obtained by the reading processing unit, and encoding the data signal to generate a remote control data signal. A transfer processing unit for creating and transferring the remote control data signal to the host device, a power supply for supplying power to the reading processing unit and the transfer processing unit, and a supply of the power to detect the first reset signal. A first detecting means, a second detecting means for detecting completion of processing in the reading processing section and issuing a second reset signal, and a third detecting means for detecting completion of processing in the transfer processing section. Third detecting means for issuing a reset signal,
The first reset signal, the second reset signal and the third reset signal
Of the reset signals, the bar code remote controller having an automatic power-off circuit which is activated last a predetermined time after the reset signal is input or shuts off the power in the applied state. A power supply control that causes the reading processing unit to start a reading process after a certain time from the input of a signal, and cuts off the supply of power to the reading processing unit during the transfer process by starting the processing in the transfer processing unit. It is configured to have means.

[Action]

In the present invention, the power supply switch is turned on to supply power to the device, and a predetermined time after the first reset signal is issued from the first detection means, the power supply control means causes the reading processing unit to Reading of the bar code starts. In this way, the reading processing section which is sufficiently warmed up during the fixed time after the supply of the electric power from the battery operates stably, and the bar code is read without malfunction.

Further, when the transfer processing unit takes in the data signal from the reading processing unit and starts the processing of creating the remote control data signal and transferring the remote control data signal to the host device, the power supply control means reads the data during the transfer processing. The power supply to the department is cut off. Therefore, useless consumption of the power source is completely prevented.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a circuit diagram showing the configuration of an embodiment of the present invention.
In the figure, the same parts as those in FIG. 2 are designated by the same reference numerals.

As shown in FIG. 1, in this embodiment, a power line 35 is connected to the reading processing unit 101 via a switching unit 17 with respect to the barcode remote control device described in FIG. The drive signal g from the transfer start determination circuit 7 is input.

An OR circuit 18 is provided, and the first reset signal u and the third reset signal k are input to the OR circuit 18,
The output terminal of the OR circuit 18 is the switching device 17 and the reading processing unit 101.
It is connected to the counter circuit 19 and the switch 23 provided in the. Further, the reading processing unit 101 is provided with a constant memory 20 and a comparator 22, and the output terminal of the counter circuit 19 and the output terminal of the constant memory 20 are connected to the input terminal of the comparator 22. The output terminals of 22 are connected to the switch 23.

The drive signal c is input to the switch 23 from the read start determination circuit 3, and the output terminal of the OR circuit 18 is connected to the switch 23.
The output terminal of the switch 23 is connected to the input terminal of the reading processing circuit 4.

The configuration of the other parts in this embodiment is the same as that of the bar code remote controller already described with reference to FIG.

In the figure, the power supply detector 16 constitutes the first detecting means, the read processing circuit 4 constitutes the second detecting means, and the transfer processing circuit 8 constitutes the third detecting means. Also, the OR circuit
18, switching device 17, counter circuit 19, constant memory 20, comparator
The switch 22 and the switch 23 form a power supply control means.

Next, the operation of the above configuration will be described.

When the power switch 20 is turned on, the
Reset signal u is output, and the first reset signal u is input to the OR circuit 11, the OR circuit 18, and the switch 15. The first reset signal u turns on the switching device 15 and the OR circuit 11 issues the drive signal D. The drive signal D causes the auto power-off circuit 103 to count the predetermined count value. Start. Then, the first reset signal u passes through the OR circuit 18 to become the driving signal v, the switching signal 17 is turned on by this driving signal v, power supply to the reading process 101 is started, and the switching device 23 is turned off. (Reading processing circuit 4 is not activated) and the counter circuit 19 is activated.

In this way, the counter circuit 19 starts counting the clock signal, and after a certain time when the count value w reaches the constant count value x set in the constant memory 20, the drive signal y is issued from the comparator 22. Since the drive signal y is input to the switch 23, the switch 23 is turned on. The fixed time in this case is set to a time sufficient for the read processing circuit 4 to warm up after the battery 21 supplies power to the read processing circuit 101.

Therefore, even if the read start determination circuit 3 determines that the operation signal a is normal, the switch 23 is turned on after the read processing circuit 4 has been sufficiently warmed up after a certain period of time. Since the barcode reading process is started, the reading processing circuit 4 operates stably and the barcode reading error does not occur.

When the transfer start determination circuit 7 determines that the operation signal e is normal, the transfer processing circuit 8 is activated by the drive signal g from the transfer start determination circuit 7, and the data signal d is output from the read processing circuit 4. Then, the switching signal 17 is turned off by the driving signal g, and the power supply from the battery 21 to the reading unit 101 is cut off. Then, the transfer processing circuit 8 encodes the data signal d to create a remote control data signal h, and this remote control data signal h is transferred to the host device. When the processing of the transfer processing circuit 8 is completed, the transfer processing circuit 8 is completed. From 8 a third reset signal k is emitted.

This third reset signal k is sent to the switching device via the OR circuit 18.
Since it is input to 17, the power supply from the battery 21 to the reading processing unit 101, which was interrupted during the processing by the transfer processing circuit 8, is restored. Therefore, continuous reading of the barcode by the reading processing unit 101 can be performed without any trouble.

As described above, in this embodiment, since the power supply from the battery 21 to the reading processing unit 101 is cut off during the processing of the transfer processing circuit 8, reliable transfer can be performed even with a battery that has been depleted to some extent. In addition, it is possible to extend a transfer distance of the barcode remote control device by supplying more current to the LED for transmission by using the power. Alternatively, it is possible to extend the usage period of the battery 21 while keeping the transfer distance.

〔The invention's effect〕

As described above, according to the present invention, the barcode reading operation is performed stably and without error, and the power consumption is reduced. Therefore, the transfer distance to the host device can be lengthened accordingly. Can provide a barcode remote control device having an excellent function such as extending the battery life.

[Brief description of drawings]

FIG. 1 is a circuit diagram showing the configuration of an embodiment of the present invention, and FIG. 2 is a circuit diagram showing the configuration of a conventional bar code remote control device. 3 ... Read start determination circuit, 4 ... Read processing circuit, 7 ... Transfer start determination circuit, 8 ... Transfer processing circuit, 11
... OR circuit, 12 ... Counter circuit, 13 ... Constant memory,
14 …… Comparator, 16 …… Power detector, 17 …… Switcher, 19…
… Counter circuit, 20… Constant memory, 21… Battery, 22…
… Comparison device, 23 …… Switching device, 101 …… Reading processing unit, 102
...... Transfer processing unit, 103 …… Auto power-off circuit.

Claims (1)

[Claims] 1. A reading processing unit for reading a barcode,
Capture the data signal obtained by this reading processing unit,
It encodes a remote control data signal, transfers the remote control data signal to a host device, a transfer processing unit, a power supply that supplies power to the reading processing unit and the transfer processing unit, and detects the supply of power. First detecting means for issuing a first reset signal, second detecting means for detecting the completion of processing in the reading processing section and issuing a second reset signal, and completion of processing in the transfer processing section. And a first detecting means for detecting a third reset signal and issuing a third reset signal.
Of the reset signal, the second reset signal, and the third reset signal, the autopower-off circuit is activated after a predetermined time has elapsed from the input time point of the last reset signal input, and shuts off the power supply in the applied state. In the barcode remote control device described above, the reading processing unit is caused to start the reading processing after a predetermined time has elapsed from the input of the first reset signal, and the power supply to the reading processing unit is started by the start of the processing in the transfer processing unit. A bar code remote control device having a power supply control means for cutting off the supply of power.