JPH0332956B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention supports multiple functions and performs complex operations, such as a hand-held wireless keyboard or a remote control for an AV (audio/visual) compatible system. This invention relates to a remote control circuit for a wireless remote control, which reduces the time it takes for an operator to make a decision after noticing a malfunction and takes corrective action, and improves the reliability of the operating state of the main device in response to the operation. .

[Conventional technology]

2. Description of the Related Art Remote controllers are increasingly being used as wireless remote controllers for personal computers and other household electrical appliances. Further, personal computers are highly expected to serve as information terminals for general household use in the future.

By the way, input devices for personal computers for general home use are easy for operators to operate.
Moreover, it is required to be easy to use so that it can be operated from any position in the room.

A conventional example of a personal computer using a remote control will be explained below with reference to FIGS. 3 and 4.
FIG. 3 is a block diagram showing a remote control circuit of a conventional personal computer, and FIG. 4 is a diagram showing the state of signal codes of each part.

In the figure, 20 is a remote control, 21 is an operation input section, 22 is a transmission control circuit, 23 is a transmission circuit, and 24
25 is a main device, 25 is a reception circuit, 26 is a reception control circuit, 27 is an operation section, 28 is an operation detection circuit, 29 and 31 are display circuits, and 30 is an operation detection circuit.

The operation input section 21 outputs a predetermined digitally encoded operation signal by selectively operating the main device 24, such as a personal computer, in response to each operating function. Figure 4 a is the output 8
An example of a bit manipulation signal is shown. This operation signal is then input to the transmission control circuit 22. A transmission circuit 23 and an operation detection circuit 30 are connected to the transmission control circuit 22 . Based on the input operation signal, this transmission control circuit 22 generates 16-bit data consisting of an operation signal as shown in FIG. 4b and an inverted operation signal in which "1" and "0" of the operation signal are inverted. At the same time as the code is generated, a 16-bit custom code consisting of a limited code and an inverted limited code to prevent interference with signals from other devices is also generated.
The non-inverted code and the inverted code are compared and determined by the main unit 24, and when they are found to correspond to each other, the non-inverted code and the inverted code are provided to prevent malfunctions to enable subsequent operations. These 16-bit custom code and data code are combined into 32 bits and input to the transmitting circuit 23 as an operation data signal. At this time, the input operation signal is sent from the transmission control circuit 22 to the display circuit 3 via the operation detection circuit 30.
Display the contents operated in step 1. The transmitter circuit 23 emits an infrared light operation command signal based on the input operation data signal, and transmits it to the main device 24 . In the receiving circuit 25 of the main device 24, the remote control 20
The light-receiving element detects an operation command signal of infrared light transmitted from the sensor. The operation command signal detected by the light receiving element is outputted from the reception circuit 25 as a code having the same content as the operation data signal, inputted to the reception control circuit 26, and subjected to malfunction prevention processing as follows.

That is, first, the limited code of the custom code and the inverted limited code are added, and it is determined whether all 8 bits are "1". As a result of the addition, if "0" is detected in at least one bit, no further operation is performed. When all the bits are "1", the limited code is then compared with the limited code preset in the main device 24, and if they match, the data code is subjected to malfunction prevention processing in the same way as the custom code. If it is normal, the operation signal will be decoded. Here, if an abnormality is detected and the process is interrupted midway, the system is reset by an operation signal that is input again and the same process is performed.
The decoded operation signal is outputted from the reception control circuit 26 to the operation section 27 based on the content of the operation signal, and the operation section 27 causes the remote control 20 to perform the selected operation. Further, the operating state of the operating section 27 is converted into a display signal via the operation detection circuit 28 and displayed on the display circuit 29.

[Problem that the invention seeks to solve]

However, the conventional remote control circuit as described above has the following problems.

That is, in the past, it was impossible to know what was ordered due to a malfunction unless the command was executed by the main unit 24 and the result of the operation was displayed, and even if the operator noticed the malfunction midway through and took corrective action. Depending on the contents of the command, it takes time for the processing to be completed, and the user has to wait for this period. Furthermore, even if the operation is correct, if the reception condition is unstable due to noise or transmission distance, the operator can judge whether the desired command is being executed and change the transmitting position of the remote control. It took a long time to complete the process, and when the operation result was undesirable, it was impossible to determine whether the result was an erroneous operation or an erroneous operation. For this reason, the operation was performed while monitoring the operation results of the main device 24 before and after the operation.

As described above, conventional remote control circuits have poor operating efficiency and are unreliable as input devices for terminals, making it difficult to support devices that require a large number of commands.

Therefore, it is a technical object of the present invention to provide a remote control circuit that allows an operator to quickly determine the reception status of various and complex operation commands, and that improves the reliability of the operation based on the command contents. Take it as a challenge.

[Means for solving problems]

In order to solve the above technical problem, the present invention includes an operation input section 2 that outputs an operation signal a, a first storage circuit 6 that stores the operation signal a, and transmits a light signal based on the operation signal a. a transmitting section; a receiving section that receives a signal from the transmitting section in the first receiving circuit 8 and stores it in a second storage circuit; and a receiving section that transmits light to the second receiving circuit 16 based on the signal from the receiving section. and a reply unit that transmits a signal, and compares the signal received by the second receiving circuit 16 with the signal stored in the first storage circuit 6, and if they match, based on the signal stored in the second storage circuit. a command control circuit 4 that outputs a signal for operating the actuating device 12 to the transmitting section, and outputs a signal for displaying an error to the display section 18 when they do not match;
It is characterized by having the following.

[Effect]

The above technical means works as follows.

The signal received by the second receiving circuit 16 is the command control circuit 4, which is the operation signal a stored in the first storage circuit 6.
If the contents match, the operating device 1 is sent to the transmitter.
2, the second storage circuit outputs a signal to output the stored signal, and when they do not match, outputs a signal to display an error to the display section 18. The operator then performs the next operation while monitoring the error display displayed on the display section 18 of the remote controller 1.

〔Example〕

The present invention will be explained in detail below based on the drawings. FIG. 1 is a block diagram showing one embodiment of the present invention, and FIG. 2 is a diagram showing custom codes and data codes of each part.

In the figure, 1 is the remote control, 2 is the operation input section,
3 and 14 are transmission control circuits, 4 is a command control circuit, and 5
and 15 are transmitting circuits, and 6 is, for example, a latch circuit or
A memory circuit such as RAM, 7 a main device such as a personal computer, 8 and 16 a receiving circuit,
9 and 17 are reception control circuits, 10 is a control output circuit,
Reference numeral 12 indicates an operating device, 13 indicates an operation detection circuit, and 18 indicates a display section.

Next, the operation will be explained. The operation input section 2 is composed of, for example, a touch panel, and outputs an 8-bit operation signal a as shown in FIG. 2 _a1 to the transmission control circuit 3 in response to the operation. When the operation signal a is input to the transmission control circuit 3, the operation signal a is first combined as an 8-bit custom code and data code to prevent interference with other devices.

A 16-bit operation data signal b, as shown in FIG. _2b1 , composed of the custom code and data code, is transmitted to the main device 7 via the transmission circuit 5 as an infrared light operation command signal. Also, at this time, the transmission control circuit 3 outputs a synchronization pulse to the command control circuit 4, and the operation signal a to the storage circuit 6. The synchronization pulse is output in synchronization with the operation signal a input to the transmission control circuit 3, causes the command control circuit 4 to start a predetermined operation, and the next synchronization pulse is not output until the transmission control circuit 3 is reset. .

The operation signal a is once stored in the storage circuit 6, and is not output from the transmission control circuit 3 to the storage circuit 6 until the transmission control circuit 3 is reset.

Next, when the transmission control circuit 3 receives the feedback signal c from the command control circuit 4, it performs the following operation regardless of whether the operation signal a is input. First, when the feedback signal c is an 8-bit data code for executing the operation of the main unit 7 shown in FIG. _{2 c1} , the 16-bit operation data signal b shown in FIG. is output from
An operation command signal is transmitted from the transmission circuit 5 to the main device 7. Next, the feedback signal c is sent to the memory circuit 6.
When the 8-bit data code shown in Fig. 2 _c2 is used to reset the memory circuit provided in the reception control circuit 9 of the main device 7, the 16-bit operation data signal shown in Fig. ₂ b3 is used. b is transmitted as an operation command signal to the main device 7 via the transmission circuit 5, and the transmission control circuit 3 is reset to a state in which it can output the synchronization pulse and the operation signal a to the command control circuit 4 and the memory circuit 6. Ru. Finally, when the feedback signal c is to command the main device 7 again the contents of the operation signal a based on the signal input from the storage circuit 6 to the command control circuit 4, the operation data shown in b ₁ of the same figure is input. Signal b is transmitted via the transmission circuit 5 as an operation command signal. The transmitting circuit 5 transmits and outputs pulse-modulated infrared light based on the input operation data signal b as an operation command signal.

The receiving circuit 8 of the main device 7 receives receivable infrared light and converts it into an electrical signal. If this infrared light is an operation command signal from the remote control 1, the same digital code symbol as the operation data signal b is the command signal. It is output to the receiving circuit 9 as d.

The command signal d input to the reception control circuit 9 is first compared in its custom code portion with a value previously set in the main device 7 to prevent interference.

If this setting value and the custom code part of the input command signal d do not match even by one digit, the subsequent operation will be stopped, and the operation will start again from the process to prevent interference with the next input command signal d. do.

If all digits of the custom code section match, then the data code section of the command signal d is processed as follows. When the purpose is to select the operation of the actuating device 12 as shown in _FIG . 1
4, outputs the same signal as the command signal d shown in FIG. _2b1 . When the purpose is to execute the operation of the actuating device 12 of the main device 7 as shown in Fig. 2 b ₂ ,
b ₁ in the same figure from the memory circuit provided in the reception control circuit 9.
The data code portion is output to the control output circuit 10. Further, when the purpose is to reset the reception control circuit 9 as shown in FIG. _2b3 , the memory circuit provided in the reception control circuit 9 is brought into a memorizable state.

The control output circuit 10 decodes the signal from the reception control circuit 9 and outputs a signal for causing the operating device 12 to perform a predetermined operation selected by the remote control 1. The operating device 12 executes an operation based on the signal from the control output circuit 10 and outputs a state signal for this operation to the operation detection circuit 13. Operation detection circuit 1
3 outputs to the transmission control circuit 14 as an 8-bit data code as shown in FIG. 2 e ₁ based on the signal input from the operating device 12 .

The transmission control circuit 14 performs the following operations based on signals input from the reception control circuit 9 and the operation detection circuit 13.

First, when the signal shown in FIG. _2b1 is input from the reception control circuit 9 to the transmission control circuit 14, the operation detection circuit 1
The following operation is performed regardless of the signal from 3.

That is, as in the custom code part of the code shown in FIG. _2b11 , the signs of "1" and "0" are inverted and output to the transmitting circuit 15 together with the data code part. On the other hand, when there is no input signal from the reception control circuit 9, the transmission control circuit 14 operates as follows using the signal e input from the operation detection circuit 13. When an 8-bit data code as shown in _FIG . A 16-bit signal as shown in Figure _e2 is output to the transmitting circuit 15.

The receiving circuit 16 of the remote control 1 receives infrared light of receivable intensity, converts it into an electrical signal, and outputs it to the receiving control circuit 17.

When this infrared light is a status signal from the main device 7, it is output to the reception control circuit 17 as a signal with the same digital code as the signal output from the transmission control circuit 14.

In the reception control circuit 17, the input reception circuit 16
The following operations are performed in response to the signals from: First, the custom code portion of the signal is compared with a value preset in the remote controller 1 to prevent interference, and if even one digit does not match, no further operation is performed. Then, when the next signal is input, the process for preventing interference is started again. On the other hand, if all digits of the custom code part match, the signal will be processed and operated as follows. The main device 7 whose input signal is as shown in Fig. 2 b ₁₁
When the custom code is output from the reception control circuit 9 to the transmission control circuit 14 and is inverted and sent back to the remote control 1, this custom code is recognized and the data stored in the storage circuit 6 from the reception control circuit 17. At the same time, the data code section is outputted as is from the reception control circuit 17 to the instruction control circuit 4.

In addition, the input signal may be input to the main device 7 as shown in Figure 2 e ₂ .
When the code is returned to the remote controller 1 with a custom code dedicated to the operating state of the operating device 12 generated by being inputted from the operation detection circuit 13 of the controller 13 to the transmission control circuit 14, this custom code part is recognized. The data code portion is output from the reception control circuit 17 to the display section 18. The command control circuit 4 starts the following operations in response to the synchronization pulse input from the transmission control circuit 3. The command control circuit 4 compares the stored data from the memory circuit 6 and the data code from the reception control circuit 17, and when both codes match in all digits, the command control circuit ₄ outputs the data from the 8-bit main device 7 shown in FIG. Outputs a feedback signal c for executing the operation,
After a predetermined period of time, the transmission control circuit 3 and the reception control circuit 9 of the main device 7 are reset as shown in FIG _.
A feedback signal c shown in is output to the transmission control circuit 3. If the two codes do not match even by _one digit, the stored data outputted by the storage circuit 6 as shown in FIG. This operation is repeated a predetermined number of times when both codes do not match, and when they do not match the set number of times, the command control circuit 4 switches the transmission control circuit 3 and reception control circuit 9 shown in _FIG . While outputting a feedback signal c to the transmission control circuit 3 to reset the
A signal for displaying an error on the display unit 18 is output.

The display unit 18 uses signals input from the reception control circuit 17 and the command control circuit 4 to display the operating equipment 1 of the main device 7.
2, and when the main device 7 does not correctly receive the contents commanded by operating the remote controller 1, an error message is displayed.

The storage circuit provided in the storage circuit 6 and the reception control circuit 9 of the present invention can be constructed of a latch circuit, a RAM, etc. depending on the amount of data to be stored.

〔Effect of the invention〕

As explained above, the configuration is such that the operating status of the main device 7 is displayed on the display section of the remote controller 1, and the content of instructions from the remote controller 1 and the content received from the main device 7 are compared and an error message is displayed when there is a difference. Therefore, in the past, it was necessary to monitor the operating status of the main device before and after inputting an operation, but according to the present invention, inputting operations can be simplified by simply monitoring the display section provided on the remote control 1 at hand. Moreover, there is an effect that reliability can be improved.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing an embodiment of the present invention, Fig. 2 is a diagram showing the state of signal codes of each part according to the invention, Figs. 3 and 4 show a conventional example, and Fig. 3 is a diagram of a remote control. The block diagram in FIG. 4 is a diagram showing signal codes of each part. 1... Remote control, 2... Operation input section, 3, 14
...Transmission control circuit, 4...Command control circuit, 5,1
5... Transmission circuit, 6... Memory circuit, 7... Main device, 8, 16... Receiving circuit, 9, 17... Reception control circuit, 10... Control output circuit, 12... Operating equipment, 18... ...Display section.

Claims (1)

[Claims] 1: an operation input section that outputs an operation signal; a transmitter that stores the operation signal in a first storage circuit and transmits a light signal based on the operation signal; and a first receiver that receives the signal from the transmitter. a receiving section that receives an optical signal in a circuit and stores it in a second storage circuit; a reply section that transmits an optical signal to a second receiving circuit based on the signal from the receiving section; signal and said first
compare the signals stored in the second storage circuit, and if they match, output a signal to the transmitting section to operate the operating device based on the signal stored in the second storage circuit, and if they do not match, display an error on the display section. A remote control circuit comprising a command control circuit that outputs a signal for.