JPH0767191B2 - Bar code remote control device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a barcode remote controller, and more particularly to a barcode remote controller configured to reliably and stably read a barcode.

[Conventional technology]

A barcode remote control device that reads a barcode to obtain 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. Many are equipped with an auto power-off circuit in order to prevent wasteful consumption.

FIG. 3 is a block diagram showing a conventional configuration of this type of barcode remote control device, which is an auto power-off circuit 103,
A power supply 21 that is composed of a read processing unit 101 and a transfer processing unit 102 and that supplies power to the read processing unit 101 and the transfer processing block 102 by turning on a power key (not shown).
Is connected to the auto power-off circuit 103.

The auto power-off circuit 103 is composed of a counter circuit 12, a constant memory 13, a comparator 14, a power key determination circuit 16, an OR circuit 19 and a switching device 15, and the OR circuit 11 is connected to the auto power-off circuit 103. The switch 15 is turned on by the operation of turning on the power key, and at the same time, the first reset signal v is input to the OR circuit 11, and the OFF signal u is output from the power key determination circuit 16 by the operation of disconnecting the power key. It is input to the switching device 15 via the OR circuit 19, and the switching device 15 is driven by this OFF signal u.
Is configured to be turned off. In addition, switch 15
By the ON operation of the reading processing unit 10 through the power line 35,
Power is supplied from the power supply 21 to the 1 and the transfer processing unit 102. The reading processing unit 101 is composed of a reading start key input circuit 1, a switching device 2, a reading start judgment circuit 3, a reading processing circuit 4 and an OR circuit 9. The reading start key SW1 is operated to read the reading start key. The operation signal a is connected from the input circuit 1 via the switch 2 so as to be input to the reading start determination circuit 3. 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 bar code and the data signal d.
Is obtained, and this data signal d is taken in and stored in the transfer processing circuit 8.

Further, when the reading processing of the bar code by the reading processing circuit 4 is completed, the second reset signal m from the reading processing circuit 4 is output as the output z of the OR circuit 11 and the OR circuit 9 and the reading start key input circuit 1 is transferred. The start key input circuit 5 and the switches 2 and 6 are connected so as to be input.

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 so 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
Thus, a remote control data signal h is created from the data signal d, and this remote control data signal h is transferred to the host device.

Further, 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 supplied to the OR circuits 10 and 11, and at the same time, the OR circuit 10
From the output i is input to the switches 2 and 6.

In the bar code remote controller having such a configuration, when the operator turns on a power key (not shown), the power key determination circuit 16 generates a first reset signal v, and the signal v causes the switch of the auto power off circuit 103 to switch. When 15 is turned on, the power supply 21 to the reading processing unit 101 and the transfer processing unit 102
The supply of power by is started.

At the same time, the first reset signal v is input from the power key judgment circuit 16 to the OR circuit 11, the counter circuit 12 is cleared to 0 and counting is started, and this count value p is preset in the constant memory 13 by a predetermined value. When the number q (eg 25 seconds) is reached,
The cutoff signal r from the comparator 14 is input to the switcher 15 via the OR circuit 19 to turn off the switcher 15 to cut off the power supply to the reading processing unit 101 and the transfer processing unit 102.

When the operator turns on the reading start key SW1 in the process of operating the barcode remote control device, the operation signal a indicates the switching device 2
Is input to the reading start determination circuit 3 via. 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 this data signal is stored in the transfer processing circuit 8. When the reading processing circuit 4 completes reading the bar code, the second reset signal m 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 starts counting from that point until the count value p newly reaches the 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
Then, the transfer processing circuit 8 is activated, the data signal d is encoded by the transfer processing circuit 8, and the remote control data signal h
Is created and this 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 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. 3, the first reset signal v and the second reset signal m
Of the third reset signal k and the reset signal finally input to the OR circuit 11, after a predetermined time (for example, 25 seconds), the power supply 21 from the power supply 21 to the read processing unit 101 and the transfer processing unit 102 is cut off. To be done.

Therefore, for example, a large number of reading processes and their transferring processes can be performed with a margin without repeatedly operating the power key, so that the barcode remote control device can be effectively and smoothly operated. .

[Problems to be Solved by the Invention]

In the above-mentioned conventional bar code device, when the power key is disconnected from the closed state, the power key determination circuit 16 inputs the cutoff signal u to the OR circuit 19, and the cutoff signal u turns off the switching device 15. Therefore, the power supply from the power source 21 to the reading processing unit 101 and the transfer processing unit 102 is cut off. However, since this type of barcode remote control device is used by sliding it on the barcode manually, it is easy for chattering to occur at the contact part of the power key, and the power key is disconnected during the reading of the barcode. There is. It is known that such a phenomenon that the power key is in a disconnected state often occurs when the contact portion of the power key is in a fatigued state due to aging.

In this way, when the power key is cut off during the reading of the barcode and the power supply from the power supply 21 is cut off, the reading process up to that point will continue even if this cutoff is temporary. It will be invalid, so you must turn the power key on again and read the barcode again.

The present invention has been made based on the current state of the barcode remote control device of this kind as described above, and an object thereof is to prevent the power source from being turned off by the blocking means even if the power key is disconnected during the reading of the barcode. It is an object of the present invention to provide a bar code remote control device in which the interruption of the electric power supply is blocked and the bar code can be read reliably and stably.

[Means for Solving the Problems]

In order to achieve the above object, the present invention provides a reading processing unit for reading a bar code, a data signal obtained by the reading processing unit, and encoding the data signal to create a remote control data signal. To the reading processing unit and the transfer processing unit by operating a power key, and a first reset signal that detects the power supply and issues a first reset signal. Detecting means, second detecting means for detecting the completion of the processing in the reading processing section and issuing a second reset signal, and detecting the completion of the processing in the transfer processing section for detecting the third reset signal. The third detecting means to be activated and the operation after a predetermined time from the input time point of the reset signal input last among the first reset signal, the second reset signal and the third reset signal A bar code remote control device having an automatic power-off circuit for cutting off the power supply by the power source, if the power key is in a disconnected state while the bar code is being read by the reading processing section, the power supply is cut off. It is characterized in that it has a blocking means for blocking until the blocking operation by the second reset signal.

[Action]

If the power key is released during the reading of the bar code by the reading processing unit, the blocking means is activated to block the interruption of the power supply by the auto power-off circuit until the interruption operation by the second reset signal. The second reset signal is issued at the completion of reading the bar code in the reading processing section, and the power supply is cut off after a predetermined time has elapsed since the second reset signal was input to the auto power-off circuit. Reading is reliable and stable.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a circuit diagram showing the configuration of an embodiment of the present invention, and the same parts as those in FIG. 3 are designated by the same reference numerals.

In the figure, 101 is a read processing unit, 102 is a transfer processing unit, 103 is an auto power-off circuit, 21 is a power supply, 16 is a power key determination circuit, 4 is a read processing circuit, 8 is a transfer processing circuit, and 17 is a switch. Is.

As shown in FIG. 1, in the embodiment of the present invention, as compared with the conventional bar code remote controller described in FIG. 3, the auto power off circuit 103, the OR circuit 18, and the switching unit 17 are provided.
Is added, the first reset signal v and the read error signal n from the read processing circuit 4 are input to the OR circuit 18, and the switch 17 is turned on by the output signal b of the OR circuit 18. The output terminal of the OR circuit 18 is connected to the switch 17.

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

In FIG. 1, the power supply key determining circuit 16 constitutes the first detecting means, the reading processing circuit 4 constitutes the second detecting means, and the transfer processing circuit 8 constitutes the third detecting means. Also, switch
17 constitutes a blocking means.

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

When the read start determination circuit 3 determines that the operation signal a is normal, the drive signal c from the read start determination circuit 3
Thus, the reading processing circuit 4 operates and the reading processing of the bar code is started. At the same time, the drive signal c is input to the switch 17, so that the switch 17 is turned off.

For this purpose, the read processing circuit 4 of the read processing unit 101
Even if the power key is disconnected and the OFF signal u is output from the power key determination circuit 16 during the barcode reading process in step 1, the switch 17 is still in the OFF state.
The output signal w is not input to the OR circuit 19. Therefore, in this case, the switch 15 is not turned off, and the power supply from the power supply 21 to the reading processing unit 101 and the transfer processing unit 102 is not interrupted.

In this way, the reading of the barcode by the reading processing circuit 4 proceeds without interruption even when the power key is in the disconnected state, and when the reading of the barcode is completed, the reading processing circuit 4 outputs the second reset signal. m is OR
Input to the circuit 11 and the power supply 21
Power supply is set.

In the reading of the barcode by the reading processing circuit 4 in this case, if the reading processing circuit 4 does not detect the reading input from the barcode for a certain period of time, it is determined that the reading of the barcode is completed, and the reading processing circuit 4
To output the second reset signal m. Therefore, a plurality of independent bar codes can be continuously read by the reading processing circuit 4, and in this case, after the reading of all the bar codes is completed, the reading processing circuit 4 outputs the second reset signal m. Is input to the OR circuit 11, and power supply by the power supply 21 is set for a predetermined time from the time of the input.

Further, when the reading processing circuit 4 malfunctions due to the reading of the barcode, the reading error signal n is input from the reading processing circuit 4 to the OR circuit 18, and the switch 17 is turned on by the output signal b of the OR circuit 18. Therefore, when the power key is in the disconnected state, the output signal w of the switch 17 is ORed.
It is given to the switch 15 via the circuit 19, the switch 15 is turned off, and the power supply from the power supply 21 is immediately cut off.

FIG. 2 is a timing chart for explaining the above-mentioned operation. As shown in FIG. 2 (i), in the conventional barcode remote control device, when the power key is turned on at time t ₁ , the power is turned on at time t ₂ after a minute time. Although the power supply from the is carried out, for example, when the power key becomes disconnected state at time t ₃ during the process of reading the bar code, the power supply from the power source at a time t ₄ after the minute time is interrupted. In this case, if the power key does not become disconnected during the operation, the auto power-off circuit operates at time t ₅ as shown in (ii) of the figure, and the power supply from the power supply is cut off after time T from the turning on of the power key. It

On the other hand, in the bar code remote control device according to the present invention, when reading and transferring one bar code, as shown in (iii) of the same figure, after the bar code reading is started at time t ₆ , , Even if the power key is disconnected at time t ₇ , the power supply from the power supply is not cut off.
Then, reading of the bar code is completed at time t _8, when it is determined that reading error has occurred, the power supply from the power source to the time t ₉ after a very short time is interrupted ChokuChii.

However, the power supply is not shut off unless a reading error occurs, and when the transfer start key is turned on at time t ₁₀ , the transfer processing circuit 8 creates a remote control data signal,
Time t ₁₁ transfer to the host device of the remote control data signal is started at, the transfer is completed at time t _12. Then, at time t ₁₃ , the second reset signal issued from the reading processing circuit 4 cuts off the power supply from the power source at time t ₁₃ .

In the barcode remote control device according to the present invention,
When reading is continuous multiple independent bar code, as shown in FIG. (Iv), the reading of the start bar code at time t ₆ is the power key at time t ₇ is Te summer and disconnected state It continues without being relayed, and the barcode reading is completed at time t ₈ . In this case, when it is determined that the reading error has occurred, the power supply from the power supply is immediately cut off at time t ₉ after a minute time.

But unless this read error occurs, time t
_{At 13} , the reading of other bar codes can be started continuously. Then, the reading of the bar code is completed at time t _14, at time t ₁₅ when the read error occurs, the power supply from the power source is cut off.

When the reading processing circuit 4 completes reading the bar code at the time t ₁₄ , the second reset signal m issued from the reading processing circuit 4 causes the second reset signal to be input to the OR circuit 11. The power supply for the predetermined time T is set: At time t ₁₆ , the power supply from the power supply is cut off. During this time, the transfer start key SW2 may be operated to cause the transfer processing circuit 8 to perform a transfer process, or the read start key SW1 may be operated to cause the read processing circuit 4 to perform a new bar code reading process. I can.

As described above, according to the above-described embodiment, even if the power key is disconnected during the reading of the bar code, the power supply from the power source 21 is not shut off and the bar code and the reading are continued as they are. The code can be read reliably and stably.

〔The invention's effect〕

As described above, according to the present invention, even if the power key is disconnected during the reading of the bar code, the reading of the bar code is completed without cutting off the power supply from the power source. Efficient processing can be performed without interruption.

[Brief description of drawings]

FIG. 1 is a circuit diagram showing the configuration of an embodiment of a barcode remote control device according to the present invention, and FIG. 2 is a timing chart of the operation of the barcode remote control device for explaining the operation of the embodiment of the present invention. FIG. 1 is a circuit diagram showing the configuration of a conventional barcode 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, 15 …… Switcher, 16 …… Power key judgment circuit, 17 …… Switcher, 18 …… OR circuit, 19 …… OR circuit, 21…
… Power supply, 101 …… Read processing section, 102 …… Transfer processing section,
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,
A transfer processing unit that encodes a remote control data signal and transfers the remote control data signal to a host device; a power supply that supplies power to the reading processing unit and the transfer processing unit by operating a power key; First detecting means for detecting supply and issuing a first reset signal; second detecting means for detecting completion of processing in the reading processing section and issuing a second reset signal; and the transfer processing section. Of the first reset signal, the second reset signal and the third reset signal, which is the last input reset signal, for detecting the completion of the processing in step 3 and issuing a third reset signal. In a bar code remote control device including an auto power-off circuit that operates after a predetermined time from the input time of, and shuts off the power supply by the power source,
If the power key is disconnected during reading of the bar code by the reading processing unit, the bar code has a blocking means for blocking the interruption of the power supply until the interruption operation by the second reset signal. Remote control device.