JP2004312667A - Multichannel remote control, and transmitter/receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a multichannel remote control equipped with a plurality of transmitters and a plurality of receivers. <P>SOLUTION: A transmitter is provided with a command selector switch, an ID selector switch, a control signal-sampling-hold portion, an ID selector, a clock generating portion, a radio-frequency wave transmission circuit, and an output control portion for modulating a sequential data frame into a signal having a fixed sequence structure. Further, it has a coding portion for coding and a data frame package portion for packaging data into a data frame. A receiver has a clock-generating portion, a radio-frequency wave receiving circuit, ID selector switch, ID selector, a drive circuit and a reception logical controller.Further, it has a decoding portion for conducting decoding operation, a check portion for conducting checking operation and a comparison portion for conducting ID compare operation. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a multi-channel remote control device, and more particularly to a multi-channel remote control device employing different transmission sequences for transmitters having different IDs, and a transmitter / receiver constituting the same.

  In the currently known multi-channel remote control playground equipment, almost the following two types of control methods are employed.

1) Using Carriers of Different Frequencies In the method, the transmitters transmit data using different carrier frequencies, and the receivers are set to the corresponding frequencies and receive the data. Transmitters transmit continuously, but there is no mutual interference due to the different carrier frequencies. Since the structures of the transmitter and the receiver are required to correspond one by one, the versatility is relatively poor. If a carrier with multiple frequencies is required at the same time, the structure of the transmitter and the receiver is further complicated, and at the same time the cost is increased.
2) Using the same carrier frequency, with synchronization between the transmitters.
The method uses a single frequency carrier, each transmitter corresponds to one channel, the receiver structure is the same, and there is a synchronization operation between the transmitters. Based on the synchronization signal, different transmitters select different time slots to transmit data, thereby avoiding collisions between channels.

  FIG. 7 is a configuration diagram of a multi-channel remote control device using the method, in which Tx (1), Tx (2), Tx (3)... Tx (n) denotes a transmitter, and Rx (1) , Rx (2), Rx (3)... Rx (n) indicate receivers, and the transmitters are operated synchronously, so that a synchronous signal is supplied to each transmitter.

  FIG. 8 is a signal sequence diagram using this method. As shown in FIG. 8, after transmitting the same synchronization signal, the transmitters 1, 2, and 3 transmit data frames with different origins and time slots. However, the transmitted data frame may include ID information. The receiver receives data frames from all channels, ie, all transmitters. According to the figure, the data frames received by the receiver are continuous, but since they are from different transmitters, only the same data as the local ID is executed. Although the synchronization operation between the transmitters can effectively avoid the collision between channels, each transmitter must be connected in order to realize the synchronization operation. The additional structure thus accompanies the player during use.

  SUMMARY OF THE INVENTION It is an object of the present invention to provide a multi-channel remote control, which includes a plurality of transmitters and a plurality of receivers, each of which is assigned an ID, and an ID for each of the transmitter and the receiver. Corresponding control is realized through the transmitter, the transmitter uses the carrier of the same frequency, but there is no synchronization operation between them, and the transmitter uses a different transmission sequence based on the ID difference, so that the Interference is avoided.

  That is, each channel transmits several frames of data based on a shorter period within a fixed time period and selects a time point for data transmission. Therefore, in each period, at least one frame of data is subject to interference in each channel. Can be guaranteed without being received. In other words, the receiver is capable of receiving at least one frame of perfect data from each transmitter within each period of time.

To achieve the above object, a transmitter of a multi-channel remote control device according to the present invention includes a command selection switch for inputting a command, an ID selection switch for inputting an ID selection command, and an interconnecting connection with the command selection switch. A control signal sampling and holding section for sampling and holding the input command; an ID selector for interconnecting the ID selection switch for sampling and holding the ID selection signal; and generating a clock signal. A clock generation unit, a radio frequency transmission circuit for transmitting a radio frequency signal, and an output signal from the control signal sampling and holding unit, an output signal from the ID selector, and a clock signal from the clock generation unit. And the output signal is connected to the control signal sampling port. And a data frame package unit for packaging the encoded data into a continuous data frame, the encoding unit outputting an encoded signal to the control unit and performing an encoding operation on an output signal from the control signal sampling and holding unit. After receiving output signals from the central logic controller, the ID selector and the clock generator, a data frame from the central logic controller is set for each channel by an ID selection signal from the ID selector. An output control unit that modulates the signal into a signal having a transmission sequence of a constant large cycle having a different transmission cycle and outputs the signal to the radio frequency transmission circuit.
The receiver of the multi-channel remote control device according to the present invention includes a clock generator for generating a clock signal, a radio frequency receiving circuit for receiving a radio frequency signal, an ID selection switch for inputting an ID selection command, and the ID selection switch. An ID selector that is interconnected with a selection switch, samples and holds the ID selection signal, a driving circuit that drives a motor, the clock generator, the radio frequency reception circuit, and an output from the ID selector. A receiving logic control unit that receives an output signal and outputs the output signal to the driving circuit, the receiving logic control unit includes a decoding unit that performs a decoding operation, a checking unit that performs a checking operation, and an ID. And a comparing unit for performing the comparing operation of (1).

  Further, a multi-channel remote control device according to the present invention includes a plurality of the transmitters and a plurality of the receivers.

  The present invention provides a multi-channel remote control, which includes a plurality of transmitters and a plurality of receivers, each of which is assigned an ID, and which transmits to the transmitter and the receiver via the ID. Corresponding control is realized, and the transmitters use the same frequency carrier, but there is no synchronization operation between them, and the transmitter uses a different transmission sequence based on the ID difference, so that interference between channels is generated. Is avoided.

  That is, each channel transmits several frames of data based on a shorter period within a fixed time period and selects a time point for data transmission. Therefore, in each period, at least one frame of data is subject to interference in each channel. Can be guaranteed without being received. In other words, the receiver is capable of receiving at least one frame of complete data from each transmitter within each period of time. To this end, the transmitter performs coding on the control signals that need to be transmitted, and not only each data set or data frame includes control signals such as operation commands, IDs, etc. Since the auxiliary signals such as the frame head and the check code are also included, the accuracy of the data is guaranteed.

  The receiver receives and decodes the data frame, compares it with the local ID, and reserves only the data frame that is the same as the local ID. If not, discards the data frame and checks for the reserved frame. Is performed and executed if the result is correct, and discarded if the result is incorrect.

  Hereinafter, the best mode of the present invention will be further described with reference to the accompanying drawings and examples.

  FIG. 1 is a block diagram of a multi-channel remote control device according to the present invention. The multi-channel remote control device according to the present invention includes transmitters Tx (1), Tx (2), Tx of a plurality of multi-channel remote control devices. (3).. Tx (n) and receivers Rx (1), Rx (2), Rx (3)... Rx (n) of a plurality of multi-channel remote controllers, The control device includes three transmitters and three receivers.

  FIG. 2 is a block diagram showing a configuration of a transmitter of the multi-channel remote control device according to the present invention. As shown in FIG. 2, the transmitter of the multi-channel remote control device according to the present invention includes a command selection switch 7 for inputting an operation command and an ID for inputting an ID selection command for setting a local ID of the transmitter. A control signal sampling and holding section 3 for sampling and holding the input command and interconnecting with the ID selection switch 8; An ID selector 4 for sampling and holding an ID selection signal, a clock generation unit 2 for generating a clock signal, a radio frequency transmission circuit 6 for transmitting a radio frequency signal, and an output from the control signal sampling and holding unit 3 Signal and output signal from the ID selector 4 and the clock A coding unit that receives a clock signal from the raw unit 2, outputs an output signal to the control signal sampling and holding unit 3, and performs a coding operation on an output signal from the control signal sampling and holding unit 3; A central logic control unit 1 having a data frame package unit for packaging coded data into a continuous data frame, and receiving the output signals from the ID selector 4 and the clock generation unit 2, The data frame from the logical control unit 1 is modulated for each channel into a signal having a transmission sequence of a constant large cycle different from the transmission short cycle set by the ID selection signal from the ID selector 4 and the radio frequency transmission circuit 6 And an output control unit 5 for outputting to the

The player sends a command to the transmitter via the command selection switch 7. The control signal sampling and holding unit 3 performs sampling on the command selection switch 7 and holds the sampling result until the next sampling excitation signal arrives.
Central logic controller 1 provides the sampling excitation signal and periodically excites the sampling operation.

The local ID of the transmitter can be set via the ID selection switch 8, and sampling and holding are performed by the ID selector 4. All the sampling results are sent to the central logic controller 1 where they are coded and packaged in data frames. The coding operation includes addition of a frame head, function information, a check result of a “0” insertion position and a cyclic redundancy code (CRC), and Manchest coding for each bit data is performed. It is implemented in the department.
After the coding is completed, the central logic control unit 1 must form a further continuous data frame, and the operation is performed in the data frame package unit.

  The data frame is sent to the radio frequency transmission circuit 6 via the output control unit 5 and transmitted. The output control unit 5 receives a continuous data frame and generates an output sequence control signal based on the local IID. A typical data frame is modulated into an output signal having a certain sequence structure. Further, the clock generator 2 generates a clock signal required for the system.

  FIG. 3 is a diagram illustrating the transmission sequence control principle of the transmitter of the multi-channel remote control device according to the present invention. The output control unit 5 is responsible for providing a switch signal for controlling the output, and controls the continuous data frame. The data frame is transmitted only when the switch signal is "open", that is, at the high level, and the "open" position of the switch signal differs depending on the ID, so that a different transmission sequence is formed.

  FIG. 5 is an explanatory diagram of a data frame structure and data coding of the multi-channel remote control device according to the present invention. The data of each frame includes a frame head (framehead), an ID, a function code (functions), a CRC check code, a frame end space (space), and a portion such as "0" insertion. It is 23 bits long and can be adjusted based on actual needs. Before transmission, Manchester coding is performed on the data of each bit. If the data is “0”, it is displayed as low level + high level, and if the data is “1”, it is displayed as high high level + low. When the data is P3, the data is displayed at a high level + a high level. FIG. 5 shows a waveform diagram after performing Manchest coding on data “S10110”.

FIG. 4 is a block diagram showing the configuration of the receiver of the multi-channel remote control device according to the present invention.
As shown in FIG. 4, the receiver of the multi-channel remote control device of the present invention includes a clock generator 12 for generating a clock signal, a radio frequency receiving circuit 13 for receiving a radio frequency signal, and an ID selection command. ID selection switch 16, which is interconnected with the ID selection switch 16, samples and holds an ID selection signal, a driving circuit 15 for driving a motor, a clock generation module 12, A receiving logic control unit for receiving output signals from the frequency receiving circuit and the ID selector and connecting the output signals to the driving circuit; the receiving logic control unit further performs a decoding operation; Decoding unit for performing a check operation, and a comparison unit for performing an ID comparison operation (not shown in the figure) It is equipped with a.

  The radio frequency receiving circuit 13 receives the information transmitted by the transmitter, amplifies and filters, sends the information to the receiving logic control unit 11, performs decoding and checking work, and if the same as the transmitter, the ID selection switch 16 and the ID selection switch The device 14 provides a local ID to the reception logic control unit 11.

  The main functions of the reception logic control unit 11 of the receiver are decoding and checking, and the decoding operation includes frame head detection, Manchest decoding, and data access, and the work is performed by the decoding unit and accessed after decoding. A code head check, a "0" insertion position check, and a CRC check are performed on the data, and the check is performed by the check unit.

  If the check does not pass, the data of the frame is discarded, and finally, the ID in the received data frame is compared with the local ID, and the operation is performed by the comparison part. If they are the same, the data of the frame is reserved and executed, and if not, the data of the frame is discarded. The valid command drives the motor via the drive circuit 15 to execute a predetermined operation. The clock generator 12 generates a required clock signal.

  FIG. 6 is a sequence diagram of transmission signals of a three-channel embodiment of the multi-channel remote control device according to the present invention. Td indicates the time required to transmit one data frame, T indicates a large period of transmission, P1 indicates a small period of the first channel, and P2 indicates a second period of the second channel. , And P3 indicates the small cycle of the third channel, and so on.

  With three channels, each large cycle contains three data frames, and the receiver can receive at least one frame of complete data from each transmitter within each large cycle time Thus, the interference between the channels is overcome.

For a three-channel application, each large cycle contains three data frames. The specific parameters are as follows.
T = 32
P1 = 6
P2 = 8
P3 = 10

For a four-channel application, each large cycle contains four data frames. The specific parameters are as follows.
T = 64
P1 = 6
P2 = 8
P3 = 10
P4 = 14

  As described above, a plurality of transmitters and a plurality of receivers of the multi-channel remote control device according to the present invention are assigned their own IDs. For the transmitter, the corresponding parameters are selected based on the difference between the number of channels and the ID, and the data is transmitted using different transmission sequences.

  For the receiver, the received data is decoded and checked, only the data frame that is the same as the local ID is reserved and executed only after the check. In this way, one-to-one real-time control of a plurality of transmitters for a plurality of receivers can be realized on one carrier frequency band. The device can be used not only for controlling a remote control playground car, but also for other multi-channel remote controls.

  Further, since a single frequency carrier is used in the present invention, and it is not necessary to use a plurality of types of circuit structures for transmission and reception, the manufacturing cost is greatly reduced. The structure is further simplified since each channel uses a different transmission sequence and the ID design omits the synchronization operation. Further, since the data transmission is made uniform and stable by the transmission sequence structure provided with the large and small transmission periods, the data transmission efficiency is improved.

Using a method of this kind, on the one hand, reduces the cost since the carrier frequency is single and the structure of the transmitting and receiving part can be simplified.
On the other hand, since there is no synchronization operation, the player does not need to perform the synchronization correction at the start of the play, and can participate or leave at any time during the play process. Furthermore, since interference between channels can be effectively handled by designing the transmission sequence, data transmission can be made uniform and reliable by a method that combines long and short periods.

1 is a configuration diagram of a multi-channel remote control device according to the present invention. FIG. 3 is a block diagram of a transmitter of the multi-channel remote control device according to the present invention. FIG. 4 is a transmission sequence control principle diagram of a transmitter of the multi-channel remote control device according to the present invention. FIG. 3 is a block diagram of a receiver of the multi-channel remote control device according to the present invention. FIG. 3 is an explanatory diagram of a data frame structure and data coding of the multi-channel remote control device according to the present invention. FIG. 4 is a firing signal sequence diagram of a three-channel embodiment of the multi-channel remote control device according to the present invention. FIG. 2 is a configuration diagram of a multi-channel remote control device employing the same carrier in the related art and having a synchronous operation. FIG. 3 is a sequence diagram of a transmission signal of a multi-channel remote control device employing the same carrier according to the related art and having a synchronous operation.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 Central logic control unit 2 Clock generation unit 3 Control signal sampling / hold unit 4 ID selector 6 Radio frequency transmission circuit 7 Command selection switch 8 ID selection switch

Claims (9)

A command selection switch for inputting a command,
An ID selection switch for inputting an ID selection command;
A control signal sampling and holding unit interconnected with the command selection switch and sampling and holding the input command;
An ID selector interconnected with the ID selection switch, for sampling and holding the ID selection signal;
A clock generator for generating a clock signal;
A transmitter for a multi-channel remote control device comprising: a radio frequency transmission circuit for transmitting a radio frequency signal;
Receiving an output signal from the control signal sampling and holding unit, an output signal from the ID selector, and a clock signal from the clock generation unit, and outputting an output signal to the control signal sampling and holding unit; A central logic control unit having a coding unit for performing a coding operation of an output signal from the sampling and holding unit and a data frame package unit for packaging the coded data into a continuous data frame;
After receiving the output signals from the ID selector and the clock generation unit, the data frame from the central logic control unit is transmitted to the respective channels on a channel-by-channel basis with different transmission periods set by the ID selection signal from the ID selector. An output control unit that modulates a signal having a periodic transmission sequence and outputs the signal to the radio frequency transmission circuit,
A transmitter for a multi-channel remote control device, comprising: The coding operation performed by the coding unit of the central logic control unit includes addition of a frame head, insertion of "0", addition of a cyclic redundancy check code, and Manchest coding. The transmitter of a multi-channel remote control device according to claim 1. The transmitter according to claim 1, wherein a transmission sequence of the data frame by the output control unit is different for each channel having a different ID. A clock generator for generating a clock signal;
A radio frequency receiving circuit for receiving a radio frequency signal;
An ID selection switch for inputting an ID selection command;
An ID selector interconnected with the ID selection switch, for sampling and holding the ID selection signal;
A receiver of a multi-channel remote control device comprising a driving circuit for driving a motor,
The clock generation unit, a reception logic control unit that receives an output signal from the radio frequency reception circuit and the ID selector, and outputs the output signal to the drive circuit,
A receiver for a multi-channel remote control device, comprising: a receiving unit that performs a decoding operation; a checking unit that performs a checking operation; and a comparing unit that performs an ID comparing operation. . 5. The multi-channel remote control device according to claim 4, wherein the decoding operation performed by the decoding unit of the receiving logic control unit includes detection of a frame head, decoding of Manchest, and data access. Receiver. The check operation performed by the check unit of the reception logic control unit includes a check of a code head, a check of an insertion position of “0”, and a check of a cyclic redundancy code. The receiver of the multi-channel remote control as described. 5. The receiver according to claim 4, wherein the ID comparison operation performed by the comparison unit of the reception control unit compares the ID in the data frame with the local ID. A multi-channel remote control device comprising a plurality of transmitters according to claim 1 and a plurality of receivers according to claim 4. 9. The multi-channel remote control device according to claim 8, comprising three transmitters and three receivers.

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