JPH0767188B2 - Bar code remote control device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bar code remote controller, and more particularly to a bar code remote controller adapted to perform an automatic power-off operation according to an operation.

[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 automatic power-off circuit is provided to prevent wasteful consumption.

FIG. 2 is a block diagram showing the configuration of a conventional bar code remote control device of this type. This reading processing unit 101 performs a bar code reading process.
A transfer processing unit 102 is connected which creates a remote control data signal based on the data signal obtained in step (3) and transfers the remote control data signal to the host device. Then, the power from the battery 21 is supplied to the reading processing unit 101 and the transfer processing unit 102 through the auto power-off circuit 103, and the detection signal u of the power detector 16 for detecting the ON of the power switch 20 and the reading processing unit. The operation signal a of the reading start key SW1 of 101 and the operation signal e of the transfer start key SW2 of the transfer processing unit 102 are input to the auto power-off circuit 103.

In the above-mentioned reading processing unit 101, the output terminal of the reading start key SW1 is connected to the input terminal of the reading start key input circuit 1, and the output terminal of the reading start key input circuit 1 starts reading through the switching unit 2. It is connected to the input terminal of the judgment circuit 3 and the output terminal of the reading start judgment circuit 3 is connected to the control terminal of the reading processing circuit 4.

In the transfer processing unit 102, the transfer start key S
The output terminal of W2 is connected to the input terminal of the transfer start key input circuit 5, and the output terminal of the transfer start key input circuit 5 is connected to the input terminal of the transfer start determination circuit 7 via the switch 6 to start the transfer. The output terminal of the judgment circuit 7 is connected to the control terminal of the transfer processing circuit 8.

Then, the read start key input circuit 1, the switch 2, the transfer start key input circuit 5, and the switch 6 are controlled by the processing completion signal z of the read processing circuit 4, and the switch 2 and the switch 6 perform the transfer processing. The circuit 8 is also controlled by the processing completion signal i.

Further, in the auto power-off circuit 103, an OR circuit 11 is provided, the output terminal of this OR circuit 11 is connected to the control terminal of the counter circuit 12 that counts the clock CLK, and the output terminal of this counter circuit 12 and the constant memory 13 The output terminal is connected to each input terminal of the comparator 14, and the output terminal of the comparator 14 is connected to the switching unit 15.

Then, the power of the battery 21 is applied to the switch 15 via the power switch 20, and when the power switch 20 is turned on, the switch 15 causes the power of the battery 21 to be read by the above-mentioned reading processing unit.
It is configured to supply to the 101 and the transfer processing unit 102.

Further, a power supply detector 16 for detecting ON of the power supply switch 20 is provided, and a detection signal u of the power supply detector 16, an operation signal a of the reading start key SW1 obtained at the output terminal of the reading start key input circuit 1 and a transfer The operation signal e of the transfer start key SW2 obtained at the output terminal of the start key input circuit 5 is input to the OR circuit 11 described above.

When the logical value of the signal at the output terminal of the OR circuit 11 becomes "1", the counter circuit 12 is reset and the clock CLK
When the count value reaches a predetermined count value q set in the constant memory 13, the cutoff signal r is issued from the comparator 14, and the switch 15 is activated by the cutoff signal r. The power supply of the battery 21 to the reading processing unit 101 and the transfer processing unit 102 is cut off, and at the same time, the power switch 20 is turned off.

In the conventional barcode remote control device having such a configuration,
When the power switch 20 is turned on, the switching device 15 causes the battery 21
Is supplied to the read processing unit 101 and the transfer processing unit 102.

At the same time, the power detector 16 detects that the power switch 20 is ON,
Since the detection signal u is input to the OR circuit 11, the counter circuit
12 is reset and starts counting the clock CLK.

When the count value p of the counter circuit 12 reaches the preset count value q of the constant memory 13, a cutoff signal is output from the comparator 14, so that the switch 15 is switched and the read processing unit 101 and The supply of the voltage of the battery 21 to the transfer processing unit 102 is cut off.

In the normal operation, after turning on the power switch 20, the reading start key SW1 and the transfer start key SW2 are operated to perform the bar code reading process and the remote control data signal transfer process.

In this case, when the transfer start key SW2 is operated later, the time from the count start of the counter circuit 12 by the input of the operation signal e to the OR circuit 11 until the set count value q of the constant memory 13 is reached (for example, 25 seconds). ) And the time from when the power switch 20 is turned on to when the transfer start key SW2 is operated, the power is supplied from the battery 21 to the read processing unit 101 and the transfer processing unit 102.

In the barcode remote control device, the processing completion signal i
The operation signal a is input from the reading start key input circuit 1 to the reading start determination circuit 3 via the switch 2 that is turned on, and the driving signal c is input to the reading processing circuit 4, whereby reading is performed. A barcode is read by the processing unit 101 to obtain a data signal d, and the data signal d is stored in the reading processing circuit 4.

In this way, when the reading processing unit 101 completes the barcode reading processing, the switch 6 is turned on by the processing completion signal z issued from the reading processing circuit 4, and the operation signal e is transferred from the transfer start key input circuit 5. The transfer processing unit 102 starts the transfer operation in response to the input to the start determination circuit 7 and the drive signal g to the transfer processing circuit 8.

Then, the data signal d is taken into the transfer processing circuit 8,
The transfer processing circuit 8 creates a remote control data signal h based on the data signal d, and the remote control data signal h is transferred to the host device.

[Problems to be Solved by the Invention]

In the above-described conventional barcode remote control device, the power supply from the battery 21 to the reading processing unit 101 and the transfer processing unit 102 is cut off within a predetermined time after the operation of the reading start key SW1 and the transfer start key SW2.

Therefore, for example, if it takes time to select a required barcode, the voltage of the battery 21 is supplied during the reading process in the reading processing unit 101 or during the transfer process in the transfer processing unit 102. May be cut off.

In this way, if the supply of the voltage of the battery 21 is cut off during the reading process or during the transfer process, the power switch 20
It becomes necessary to turn ON again and to repeat the apparatus, which complicates the operation and reduces the efficiency of the operation of the barcode remote control.

The object of the present invention is to provide stable and efficient reading and transfer processing without interruption of power supply for a predetermined time after completion of the reading and transfer processing for the operated reading start key and transfer start key. It is to provide a barcode remote control device to be carried out.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the present invention reads a barcode to obtain a data signal, a reading processing unit, takes in the data signal obtained by the reading processing unit, encodes the data signal, and outputs 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 read processing unit and the transfer processing unit, and a first power supply for detecting the application of the power supply.
To the bar code remote control device having a first detecting means for issuing a reset signal, and an automatic power-off circuit which operates after a predetermined time from the input of the first reset signal and performs an operation of shutting off the power supply in the applied state, Second detecting means for detecting the completion of the processing in the reading processing section and issuing a second reset signal, and third detecting means for detecting the completion of the processing in the transfer processing section and issuing a third reset signal. A detecting means is provided, and when at least one of the second reset signal and the third reset signal is input to the auto power-off circuit during the application of the power source, a predetermined reset signal is input from the input of the reset signal input later. The automatic power-off circuit is configured so that the interruption operation is performed after a lapse of time.

[Action]

In the present invention, when the reading start key is operated within a predetermined time after the power is applied to the device, the reading processing unit reads the bar code to obtain and store the data signal. When the reading process by the reading processor is completed,
The second reset signal is input from the second detecting means to the auto power-off circuit.

If the transfer start key is operated within the above-mentioned predetermined time,
The transfer processing unit operates to take in a data signal from the reading processing unit, a remote control data signal is created based on this data signal, and this remote control data signal is transferred to the host device. When the transfer processing in the transfer processing unit is completed, the third reset signal is input to the auto power-off circuit from the third detecting means.

The counter circuit of the auto power-off circuit is reset by the second reset signal and the third reset signal to count up to a preset count value. The power is cut off after a certain time from the input.

Therefore, when performing normal operation, the power is shut off after a certain period of time after the reading process in the reading processing unit and the transfer process in the transfer processing unit are completed. Stable read processing and transfer processing are performed efficiently and smoothly.

〔Example〕

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

FIG. 1 is a block diagram showing the configuration of the essential parts of an embodiment of the present invention, in which the same parts as those in FIG.

As shown in FIG. 1, in the embodiment of the present invention, the processing completion signal z of the reading processing circuit 4 is input to the OR circuit 11 in the conventional bar code remote controller described above.
The reading processing circuit 4 is connected to the OR circuit 11 in place of the conventional reading start key input circuit 1.

Further, the transfer processing circuit 8 is connected to the OR circuit 11 instead of the conventional transfer start key input circuit 5 so that the processing completion signal k of the transfer processing circuit 8 is input to the OR circuit 11.

Then, the inactive terminal of the reading start determination circuit 3 and the processing completion signal terminal of the reading processing circuit 4 are connected to the OR circuit 9
The output terminal of the OR circuit 9 is connected to the input terminals of the read start key input circuit 1, the transfer start key input circuit 5, the switching device 2 and the control terminal of the switching device 6, respectively.

Similarly, the inactive terminal of the transfer start judgment circuit 7 and the processing completion signal terminal of the transfer processing circuit 8 are connected to the input terminal of the OR circuit 10, and the output terminal of the OR circuit 10 is connected to the switching device 2 and the switching device 6. It is connected to the control terminal of.

The structure of the other parts in this embodiment is the same as that of the conventional bar code remote controller described in FIG.

In one embodiment of the present invention thus configured, the power supply detector 16 constitutes the first detecting means, and the reading processing circuit 4
Constitutes the second detecting means, and the transfer processing circuit 8 constitutes the third detecting means.

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

In this embodiment, when the power switch 20 is turned on, the switching device is switched, as in the conventional bar code remote controller described above.
15 is switched and the power from the battery 21 is read
It is supplied to 101 and the transfer processing unit 102.

At the same time, the detection signal u which is the first reset signal from the power supply detector 16 is input to the OR circuit 11, so that the counter circuit 12
Counts the clock CLK, and the count value p reaches the count value q set in the constant memory 13 for a predetermined time, for example,
Counting continues for 25 seconds.

During this time, the reading start key SW1
When W2 is operated, as described in the conventional bar code remote controller with reference to FIG.
The reading process in 1 and the transfer process in the transfer processing unit 102 are performed.

In these processing steps, when the reading processing in the reading processing unit 101 is completed, the reading processing circuit 4 outputs the processing completion signal z, and the processing completion signal z which is the second reset signal is input to the OR circuit 11. Therefore, the counter circuit 12 is reset and restarts counting the clock CLK anew.

In the counting of the counter circuit 12, the count value p is a constant memory 13
It is continued for 25 seconds, for example, until it reaches the count value q set in 1. However, since the transfer processing by the transfer processing unit 102 is completed in the middle of the counting, the processing completion signal k from the transfer processing circuit 8 becomes the third value. The reset signal is input to the OR circuit 11.

Therefore, the counter circuit 12 is reset again, the counter circuit 12 newly starts counting the clock CLK, and the count value p of the counter circuit 12 is stored in the constant memory after a predetermined time, for example, 25 seconds, from the input of the third reset signal. The count value q set in 13 is reached, the cutoff signal r is input from the comparator 14 to the switch 15, and the switch 15 is read by the read processing unit 101 and the transfer processing unit 102.
The supply of the voltage of the battery 21 to the battery is cut off.

As described above, in the embodiment of the present invention, the count of the counter circuit 12 is updated by the completion of the read processing in the read processing unit 101 or the completion of the transfer processing in the transfer processing unit 102, and the new counting is started. The power is not cut off for a predetermined time.

Moreover, since the count of the counter circuit 12 is updated by successive interrupts, stable reading processing and transfer processing can be performed by an operation with a margin without repeatedly operating the power switch 20, and for example, a large number of times. The reading process and its transfer process can be performed smoothly and efficiently.

〔The invention's effect〕

As described in detail above, according to the present invention, it is possible to stably perform a barcode reading process and a transfer of a remote control data signal based on a data signal obtained by this reading to a host device by a simple operation. Thus, it is possible to provide a barcode remote control device that performs smoothly and efficiently.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of the essential parts of an embodiment of a bar code remote control device according to the present invention, and FIG. 2 is a block diagram showing the configuration of the essential parts of a conventional bar code remote control device. 1 ... Reading start key input circuit, 2, 6 ... Switching device, 3
...... Read start determination circuit, 4 ... Read processing circuit,
5 ... Transfer start key input circuit, 7 ... Transfer start determination circuit, 8 ... Transfer processing circuit, 12 ... Counter circuit, 15 ...
Switching device, 16 ... Power supply detector, 101 ... Read processing unit, 1
02 …… Transfer processing unit, 103 …… Auto power off circuit.

Claims (1)

[Claims] 1. A reading processing section for reading a bar code to obtain a data signal, a data signal obtained by the reading processing section, taking in the data signal, encoding the data signal to create a remote control data signal, and outputting the remote control data signal. A transfer processing unit for transferring to the host device, a power supply for supplying electric power to the reading processing unit and the transfer processing unit, first detecting means for detecting application of the power supply and issuing a first reset signal, In a barcode remote control device having an automatic power-off circuit which operates after a predetermined time has elapsed from the input of the first reset signal and shuts off the power supply in the applied state, the completion of the processing in the reading processing unit is detected, and Second detecting means for issuing a second reset signal, and a third detecting means for detecting the completion of the processing in the transfer processing section and issuing a third reset signal. Means for inputting at least one of the second reset signal and the third reset signal to the auto power-off circuit during an application period of the power supply, a predetermined reset signal is input from a later input reset signal. The bar code remote control device, wherein the auto power-off circuit is configured so that the breaking operation is performed after a lapse of time.