JP3304965B2 - Remote control commander - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote control commander suitable for use when devices such as a video tape recorder, a camera-integrated video tape recorder, a television receiver, and an FM tuner are remotely controlled.

[0002]

2. Description of the Related Art Conventionally, in a wireless remote control system using a remote control commander in which various devices are operated by remote control, a transmission code is transmitted from a remote control commander to a device (for example, a video tape recorder, a television receiver, or the like). ).

As shown in FIG. 10, the transmission code generally has a predetermined signal format, and includes a guide pulse A for causing a device to recognize the start of data, and an operation key provided on a remote control commander. A command code B for causing the device to determine which operation key has been operated and a category code C for specifying the type of the device. Are transmitted in chronological order from the remote control commander to the device in this order (see FIG. 11), and on the device side, the codes are analyzed and processing for responding to the operation of the user is performed.

[0004] In this case, if a device operated in the same signal format is nearby, another device may malfunction due to interference with a transmission code transmitted to a certain device.

Therefore, as shown in FIG. 12, several bits of an ID code ID set by a predetermined switch are added to a transmission code, and the transmission code is transmitted in a time series. When the category code and the ID code match (the category code C1 and the ID code ID1 match,
(A match between the category code C2 and the ID code ID2, a match between the category code C3 and the ID code ID3) and other codes are analyzed, and a process for responding to a user operation is performed.

In this case, the order of the ID codes is determined by associating the category codes with the ID codes on a one-to-one basis.

In a wireless remote control system using a transmission code to which the ID code is added, when the remote control commander is used indoors, it is known that malfunction of the device is prevented to some extent ( See JP-A-63-26092.

On the other hand, when a remote control commander is used outdoors, several bits of ID are set by a switch.
In a configuration in which a code is set, the probability of duplication with another ID code is high, so it is necessary to increase the number of bits of the ID code. At this time, in a configuration in which the ID code is set by a switch for each bit, It has been pointed out that operability is poor for users due to the increase in hardware.

[0009] Therefore, a random code is set in the remote control commander and the device, so that the remote control commander and the device are remotely associated with each other in one-to-one correspondence (identification unique to the device to be operated). The signal is preset as a fixed code) has been proposed by the applicant (not disclosed).

[0010]

However, depending on the situation of use, the operability can be improved by using an arbitrary identification signal (random code) without a one-to-one correspondence between the remote control commander and the device. Sometimes it gets better.

An object of the present invention is to provide a remote control commander in which a fixed code and a random code can be used individually.

[0012]

In order to solve the above-mentioned problems, the present invention provides a remote control commander having the following means. That is, a guide pulse signal for causing the device to recognize the start of data, a command code signal for causing the device to determine which operation key has been operated among the operation keys provided on the remote control commander, and a type of the device. A category code signal for specifying, and a remote control commander for transmitting a transmission signal composed of an ID signal for corresponding the remote control commander and the device,
ID of random code according to operation of ID generation switch
An ID signal generating means for generating a signal, wherein the ID signal comprises a fixed code stored in a memory corresponding to a preset new category or an ID code generated by the ID signal generating means. ID code determining means for determining whether the ID code is within the range of the preset fixed code, and a condition that the ID code is determined to be within the range of the code by the ID code determining means. The present invention further provides a remote control commander provided with ID code replacement means for replacing the ID code outside the range of the fixed code.

In the remote control commander according to the present invention, the output time of the ID code generation signal is measured from the time when the ID code generation signal generation means is turned on and the time when the ID code generation signal generation means is turned off. The output time is determined as an ID code at the timing when the application signal generating means is turned off, and the determined ID is output.
It is determined whether the code is within a preset fixed code range, and desired data input in response to a predetermined operation is set as data for generating a transmission signal.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a remote control commander according to the present invention will be described below with reference to the drawings. FIG. 1 shows a circuit configuration of a main part of the remote control commander according to the present embodiment. An ID generation switch 1 (ID code switch) for generating and outputting an ID code generation signal for a desired time in response to a predetermined operation. The ID code generation signal output from the generation signal generation means) is input to the switch scan circuit 3 provided in the microcomputer 10 and recognized, and the output time of the recognized ID code generation signal is set to the timer 5. In this case, the time when the ID generation switch 1 is turned on is set as the output start time of the ID code generation signal, and the ID generation switch 1 is turned on. The time at which the state is turned off is set as the output end time of the ID code generation signal.

It is preferable that the ID generating switch 1 is designed to have a low height and to be designed to be pressed by a pen tip or the like in order to prevent malfunction.

The timer 5 starts counting from an initial value "0", and when a so-called "digit overflow" occurs,
The counting is repeated such that the counting is performed again from the initial value “0”.

The output signal (output time) of the timer 5
Is input to a latch circuit 7 (ID code determination means) and is temporarily stored therein. In the latch circuit 7, when the ID code generation switch 1 is turned on after being turned on, the stored output time is The determined ID code is determined, and the determined ID code (random code) is output from the latch circuit 7 and input / stored in the memory 9.

A fixed code set in advance is stored in the memory 9. The fixed code and the ID code output from the memory 9 are input to a fixed code check circuit 11. It is determined whether the determined ID code is within the range of the fixed code (see the flowchart of FIG. 2).
The teaching means such as the liquid crystal display 13 and the buzzer 15 instructs the user to that effect by letters or sounds.

Therefore, when the teaching is not performed, the ID code is set outside the range of the fixed code. As a result, the user can surely set the ID code different from the fixed code and set the ID code. Can be easily confirmed.

The microcomputer 10 receives desired data for generating a transmission signal from a key matrix circuit 17 (data input means), and the output data from the key matrix circuit 17 is recognized by a key scan circuit 19. Desired data for generating a transmission signal is set and transmitted according to the input data (category code, command code) and the ID code from the fixed code check circuit 11, which are input to the data setting circuit 21 (data setting means). The signal is input to the signal generation circuit 23, and the transmission signal generation circuit 23 generates a transmission signal (consisting of a guide pulse signal, a command code signal, a category code signal, and an ID code signal) transmitted from the transmission circuit 25 to the device. The signal is input to the transmission circuit 25.

In this case, the ID is added to the conventional transmission format.
Since the code is added and transmitted, there is no change in the transmission frame period and the amount of ID code data is limited. Therefore, in this embodiment, the ID code data is transmitted by being divided into several frames. The length of the ID code data is set so as not to be too limited. For example, when data with a 15-bit ID code is transmitted, the ID code data is transmitted in time series in three times. (See FIG. 13).

When the input ID code is within the range of the fixed code by the fixed code check circuit 11, the data setting circuit 21 does not set the transmission data.

As described above, in this embodiment,
The output time of the ID code generation signal is measured from the time at which the ID generation switch 1 is turned on and the time at which the ID generation switch 1 is turned off. It is determined as an ID code, it is determined whether or not the determined ID code is within the range of a preset fixed code, and desired data input in response to a predetermined operation is used for generating a transmission signal. Since it is set as data, the fixed code and the random code can be used separately, resulting in improved usability.In addition, it is possible to use the fixed code to support new categories. There is an effect that can be.

Next, another embodiment will be described. As shown in FIG. 3, in this embodiment, the output signal of the memory 9 is taken in the replacement circuit 27. As shown in the flowchart of FIG. When the input ID code input and set from 1 is within the range of the fixed code, the input ID code is automatically replaced with another value so that the transmitted ID code is out of the range of the fixed code. The processing is performed, and the following four procedures are given as the procedure of the replacement processing.

In this embodiment, as shown in FIG. 5, the transmission signal has 15 bits.
The ID code is 14 bits, the parity is 1 bit, and the fixed code is a value “0H” to a value “FH”.
Are used, and the random code (the input ID code or the ID code in which the input ID code is replaced) has the value “1”.
0H ”to the value“ 3FFFFH ”.

In the first procedure, as shown in FIG. 6, a predetermined specific value (fixed value) is added to the input ID code input from the ID code generation switch 1 (see FIG. 6). ID code = input ID code + fixed value), the input ID code is replaced with an ID code (random code).

In this case, when the fixed code has a value of “0H” to “FH”, the value of the fixed value is “10” which is at least 1 larger than the maximum value “FH” of the fixed code.
H ”(“ 0010H ”in 4-digit display) to the value“ 3FFF
H "(a value at which the fixed value is added to the input ID code and does not become a fixed code again due to carry). For example, when the input ID code is the value" 00H ",
When the fixed value is the value “10H”, “00H” + “10
H ”=“ 10H ”, the ID code has the value“ 10
H ".

Next, in the second procedure, as shown in FIG. 7, an appropriate random value (for example, the number of times the microcomputer 10 has entered the stop mode) and a fixed value are included in the value of the input ID code. The value added and replaced is set as an ID code, and ID code = (input ID code + fixed value +
(Random value).

In this case, the value obtained by adding the value of (random value + fixed value) to the fixed code is the maximum value of the ID code “3”.
FFFH ”, a range of fixed values is set in a range that does not fall within the range of the fixed code again. For example, when the range of random values is a value“ 00H ”to a value“ F0H ”,
If the minimum value of the input ID code is “00H” and the minimum value of the random value is “10H”, the maximum value of the input ID code is “0FH” from the minimum value “10H” that avoids the fixed code. When the maximum value of the random value is the value “F0H”, a fixed value is set within a range up to the maximum value “3F00H” where the fixed code is avoided, and the input ID code is the value “001H”, and the random value is the value “ 10H "and the fixed value is the value" 100H ", the ID code is (" 001H "+
“010H” + “100H”) = “111H”.

Next, in the third procedure, the I shown in FIG.
A process is performed in which one bit among the 5 bits to 14 bits of the D code is replaced from a low level “0” to a high level “1”.

In this case, if the input ID code is within the range of the fixed code (value “0” to value “FH”), 5 bits to
Since all 14 bits are “0”, if one of them is replaced from “0” to “1”, the input ID code is out of the range of the fixed code (random code).

Therefore, there are a case where the bit to be replaced with "1" is fixed and a case where the bit has randomness. Therefore, as shown in FIG. If it is selected and has randomness ("random value" is selected in step S1), the input I
D code (random value) is converted to decimal number,
The digit value is associated with the bit number (step S2, step S3).

For example, if the one digit value is "0", the fifth bit is replaced with "1" from "0", and if the one digit value is "1", the sixth bit is replaced with "0". "Is replaced with" 1 ", and if the value of one digit is" 2 ", the seventh bit is" 0 ".
To "1", and similarly, if the one-digit value is "9", the 14th bit is replaced from "0" to "1".

That is, when the random value is the value "0CH", its decimal number is the value "12", so that the one-digit value is "2" and the seventh bit "0" of the ID code is "1". ", The ID code has the value" 4CH "(= 10CH).
01100b).

On the other hand, when the bit to be replaced with "1" is fixed ("fixed" is selected in step S1), the fixed value is associated with the bit as in the case of the random value. (Step S4) The processing of step S5 is performed in the same manner.

Next, in the fourth procedure, the ID code input before the ID code is input (if the current input is the third input, the second input ID code; The sum of the input ID code and the fixed value is added to the current input ID code to replace the input ID code (step S10 in FIG. 9).
If the D code is out of the range of the fixed code (NO in step S20), the ID code is set. If the D code is in the range (YES in step S20), the process proceeds to step S30 and is obtained by the replacement. Step S until the fixed code is added to the ID code and the ID code is out of the range.
The loop of 20 → Step S30 → Step S20 is repeated.

For example, if the input ID code has the value "00H",
The value of the ID code before occurrence is “01H”, and the fixed value is the value “0”.
In the case of “8”, (value of input ID code) + (value of ID code before occurrence) + fixed value = value “00H” + “01H” + “0”
8 "=" 09H ", which is within the range of the fixed code, so that the fixed value" 08 "is further added (step S3).
0) ID code = “11H”, and since this ID code is out of the range of the fixed value, it is set as it is.

In this case, the fixed value is set within the range of the minimum value "01H" to the maximum value "3FFFH", and the reason that the minimum value is not set to "00H" is that the ID code before occurrence is the value "00H". This is because no matter how many times the fixed value is added, the added value becomes “00H” and does not become a value outside the range of the fixed code.

The pre-occurrence ID code may be a value in either range of the fixed code and the random code, and the value used as the fixed code is generated as a random code. This is because it is possible.

It should be noted that the values of the ID code and the like mentioned in the description of the above four procedures are different values corresponding to the number of fixed codes and the number of bits of the ID code.

As described above, in this embodiment,
On the condition that the ID code is determined to be within the range of the fixed code, the ID code is automatically replaced outside the range of the fixed code, so that the convenience is improved.

Further, by replacing "0" corresponding to each bit other than the bit indicating the fixed code with "1", the process of automatically replacing the ID code outside the range of the fixed code becomes faster. Has advantages.

It should be noted that the present invention is not limited to the above-described embodiment, but may be made within the scope of the present invention.
Other various configurations can be adopted.

[0044]

In the remote control commander according to the present invention, the output time of the ID code generation signal is measured from the time when the ID code generation signal generation means is turned on and the time when it is turned off. When the code generation signal generating means is turned off, the output time is determined as an ID code.
It is determined whether or not the D code is within the range of a preset fixed code, and desired data input in response to a predetermined operation is set as data for generating an output waveform. As a result of being able to use the random code individually, there is an effect that the usability is improved, and there is an effect that it is possible to use a fixed code to cope with a new category.

Further, the remote control commander according to the present invention teaches that the ID code is within the range of the fixed code on condition that the ID code is determined to be within the range of the fixed code. The user is I
There is an effect that the D code can be set reliably.

In the remote control commander according to the present invention, the ID code is replaced outside the range of the fixed code on condition that the ID code is determined to be within the range of the fixed code. There is an effect that setting can be performed reliably and easily.

Further, in the remote control commander according to the present invention, on condition that the ID code is determined to be within the range of the fixed code, a low level signal and a high level signal corresponding to bits other than the bit indicating the fixed code are provided. Since the level signal and the level signal are replaced with each other, there is an effect that the replacement process can be performed quickly.

[Brief description of the drawings]

FIG. 1 is a diagram of a preferred embodiment of a remote control commander according to the present invention.

FIG. 2 is a flowchart of an embodiment.

FIG. 3 is a circuit configuration diagram in another embodiment.

FIG. 4 is a flowchart in another embodiment.

FIG. 5 is a correlation diagram showing the relationship between bits and codes.

FIG. 6 is a flowchart in another embodiment.

FIG. 7 is a flowchart in another embodiment.

FIG. 8 is a flowchart in another embodiment.

FIG. 9 is a flowchart in another embodiment.

FIG. 10 is a diagram illustrating the configuration of a conventional signal format.

FIG. 11 is an explanatory diagram of a configuration of a signal format with an ID code.

FIG. 12 is an explanatory diagram showing a transmission example of a conventional signal format.

FIG. 13 is an explanatory diagram showing a transmission example of a signal format with an ID code.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... ID generation switch, 3 ... Switch scan circuit, 5 ... Timer, 7 ... Latch circuit, 9 ... Memory, 11 ... Fixed code check circuit, 13 ... Liquid crystal Display, 15 Buzzer, 17 Key matrix, 19
... key scan circuit, 21 ... data setting circuit, 2
3 ... transmission signal generation circuit, 25 ... transmission circuit, 27 ...
Replacement circuit

Claims (1)

(57) [Claims] A guide pulse signal for causing the device to recognize the start of data; a command code signal for causing the device to determine which of the operation keys provided on the remote control commander has been operated; A remote control commander for transmitting a transmission signal composed of a category code signal for specifying the type of the remote control commander and an ID signal for corresponding the device to the remote control commander. Code ID
ID signal generating means for generating a signal, wherein the ID signal comprises a fixed code stored in a memory corresponding to a preset new category or an ID code generated by the ID signal generating means, ID code determining means for determining whether the ID code is within the range of the preset fixed code; and a condition that the ID code is determined to be within the range of the code by the ID code determining means. As an ID whose ID code is replaced outside the range of the fixed code
A remote control commander comprising a code replacing means.