Abstract:
A system for remote controlling a drive in accordance with data transmitted to the drive includes a data generator, for generating data, including identification information data, for distinguishing the transmitter from among a plurality of transmitters, and drive-specifying information data, for distinguishing the drive from among a plurality of drives; operation control information data, and discrimination information data; a transmitter, for transmitting the data; a receiver, for receiving the transmitted data; a data storage, for storing identification information data assigned to the drive; a first discriminator, for discriminating whether received data is operation control information data or identification information data; a second discriminator, for discriminating whether the received data is the data transmitted to the drive; a controller, for executing operation control in accordance with the operation control information data; and an identification-information changer.

Description:
BACKGROUND OF THE INVENTION 
   1. Field of the Invention 
   The present invention relates to a system for remote-controlling a drive, such as an automobile, a robot, or the like. 
   2. Description of the Prior Art 
   When remote-controlling a plurality of drives at the same place by infrared radiation or radio waves, it may be difficult to accurately control the drives because signals sent from a transmitter to the drives interfere with each other. As a remote control system for solving the above problem, a system is studied in which identification information is set to a transmitter and a drive respectively to separate relations between the transmitter and the drive from each other in accordance with match or mismatch between these pieces of identification information. In the case of the system, the transmitter is provided with device for transmitting the data including identification information for designating a drive to be controlled and control information for controlling the drive and the drive is provided with device for discriminating the control information for the device or not by comparing the identification information included in received data with the identification information set to the drive. Moreover, when the above pieces of identification information match with each other, the controller of the drive discriminates the control information as the control information for the controller and performs the operation control based on the control information. 
   The above remote control system makes it possible to accurately control a purposed drive for each transmitter even under an environment in which a plurality of transmitters are present by changing identification information for each transmitter. Moreover, by making it possible for one transmitter to use a plurality of pieces of identification information in an alternate way, it is also possible to selectively control a plurality of drives by one transmitter. 
   However, when separating relations between a transmitter and a drive from each other in accordance with identification information, it is necessary that pieces of identification information for drives to be simultaneously controlled at the same place are different from each other. In this case, if the identification information for a drive is fixed and therefore, the information cannot be changed, a user has to purchase a new drive so that the drive identification information the user already has does not overlap with the fixed identification information but this is troublesome. Moreover, when a plurality of users use transmitters at the same place, there is a disadvantage that a drive to which the identification information same as the identification information already used is set cannot be used. 
   Moreover, it is necessary that a manufacturer of drives separately manufactures every a plurality of types of drives correspondingly to every identification information usable by transmitters and thereby, production control become complicated. Moreover, for circulation of drives and suppliers, the labor for stock management increases. 
   In the case of a so-called radio-control toy using radio waves, a mechanism is provided in which a user selects the frequency of a radio wave and individually controls a plurality of units by replacing components referred to as crystal. However, when changing identification information through component replacement, there is a disadvantage that the identification information cannot be changed unless the user has a purposed component. 
   SUMMARY OF THE INVENTION 
   Therefore, it is an object of the present invention to provide a remote control system allowing a user to set the identification information for relating a transmitter with a drive but not requiring replacement of special components when setting the identification information. 
   In order to achieve the above object, according to one aspect of the present invention, there is provided a remote control system for remote-controlling a drive in accordance with data sent from a transmitter, wherein the transmitter is provided with: a data generation device for generating the data including identification information for relating the transmitter with the drive, operation control information for controlling operations of the drive, and discrimination information for discriminating the data for operation control or the data for change of identification information in accordance with an operation of a predetermined input unit performed by a user; and a transmission device for transmitting the data, and wherein the drive is provided with: a reception device for receiving the data transmitted from the transmitter; a storage device for storing identification information assigned to the drive itself; a first discrimination device for discriminating whether received data is the data for operation control or the data for change of identification information in accordance with the discrimination information included in the received data; a second discrimination device for discriminating whether the received data is the data transmitted to the drive itself or not by comparing the identification information included in the received data with the identification information stored in the storage device; a control device for executing operation control in accordance with the operation control information included in the data discriminated as the data for operation control and as the data transmitted to the drive itself; and an identification-information change device for changing the identification information stored in the storage device in accordance with the identification information included in the data discriminated as the data for change of the identification information. 
   According to the remote control system of the present invention, by including discrimination information in the data transmitted from a transmitter, it is made possible for a drive to discriminate whether the data transmitted from the transmitter to the drive is the data for operation control or the data for change of the identification information, control the operations of the drive in accordance with the control information included in the data when the data is the data for operation control, and change the identification information stored in storage device in accordance with the identification information included in the data when the data is the data for change of the identification information. Moreover, by using identification information and thereby discriminating whether the data is transmitted to the drive itself or not, it is possible to distinguishably control a plurality of drives. 
   Thus, in the case of the present invention, because a user can set the identification information for relating a transmitter with a drive, it is unnecessary to perform production management or stock management of drives in accordance with the type of identification information and the labors necessary for production, circulation and sale of drives are reduced. Moreover, because a user can set identification information by a transmitter, the user does not need to always prepare special components for change of identification information and thus, the user can easily enjoy remote control. Moreover, in a transmitter, at least some of the circuits for transmitting the data for operation control to a transmitter can also be used for transmission of the data for change of identification information, and in a drive, at least some of the circuits for receiving the data for operation control can also be used for reception of the data for change of identification information. Therefore, it is possible to reduce the numbers of components of a transmitter and a drive and contribute to reduction in costs and sizes of them. 
   In the case of the remote control system of the present invention, it may be allowed that when a predetermined identification-information-change-designating operation is performed on the input unit, the data generation device of the transmitter generates the data so that change-designating information for designating change of the identification information is added to the discrimination information and the identification information, which is set through the input unit when the change of the identification information is designated, is included in the data, and the first discrimination device discriminates whether or not the received data is the data for change of the identification information based on whether or not the change-designating information is added to the discrimination information. 
   In this case, the identification information for the drive is changed when the user sets desired identification information, and then performs an identification-information-change-designating operation. 
   It may also be allowed that the identification information includes transmitter-specifying information for distinguishing a plurality of transmitters from each other and drive-specifying information for distinguishing a plurality of drives from each other, the data generation device of the transmitter can independently change the transmitter-specifying information and the drive-specifying information included in the data in accordance with an operation of the input unit performed by the user, and the second discrimination device of the drive discriminates that the received data is the data transmitted to the drive itself when the transmitter-specifying information and the drive-specifying information included in the received data coincide with the transmitter-specifying information and the drive-specifying information stored in the storage device. 
   In this case, because the relation between the transmitter and the drive can be changed even if any one of the transmitter-specifying information and the drive-specifying information is changed, it is possible to realize various combinations. For example, when a plurality of drives are controlled by one transmitter, it is made to match the transmitter-specifying information of the transmitter with the transmitter-specifying information of each drive while it is made to change the drive-specifying information every drive. Then, by changing the drive-specifying information in the data to be sent from the transmitter correspondingly to a drive to be controlled, it is possible to independently control the respective drives. Moreover, when a plurality of transmitters are simultaneously used, it is possible to correctly relate a transmitter with a drive and control them by changing transmitter-specifying information for each transmitter even if pieces of drive-specifying information are matched with each other. According to the above mechanism, it is possible to control a plurality of drives separately from each other by each transmitter even under an environment in which a plurality of transmitters are simultaneously operated. 
   In the case of the remote control system of the present invention, it may be allowed for the identification-information change device to change the identification information when the reception state of the data for change of the identification information meets a predetermined condition. For example, it may be allowed to change the identification information by assuming that the condition is satisfied when receiving the data for change of the identification information a predetermined number of times. Thus, it is possible to eliminate a fear that identification information is unexpectedly changed due to noises and resultantly improve reliability. 
   It may also be allowed for the storage device of the drive to include a nonvolatile memory. In this case, the identification information is held with no backup of a power source and thus a user can repeatedly change the identification information. 
   According to the another aspect of the present invention, there is provided a transmitter for remote-controlling a drive, comprising: a data generation device for generating data including identification information for relating the transmitter with the drive, operation control information for controlling operations of the drive, and discrimination information for discriminating the data for operation control or the data for change of the identification information in accordance with an operation of a predetermined input unit performed by a user; and a transmission device for transmitting the data. 
   Moreover, according to still another aspect of the present invention, there is provided a drive to be controlled in accordance with data sent from a transmitter comprising: a reception device for receiving the data transmitted from the transmitter, the data including identification information for relating the transmitter with the drive, operation control information for controlling operations of the drive, and discrimination information for discriminating the data for operation control or the data for change of the identification information; and a storage device for storing identification information assigned to the drive itself; a first discrimination device for discriminating whether received data is the data for operation control or the data for change of identification information in accordance with the discrimination information included in the received data; a second discrimination device for discriminating whether the received data is the data transmitted to the drive itself or not by comparing the identification information included in the received data with the identification information stored in the storage device; a control device for executing operation control in accordance with the operation control information included in the data discriminated as the data for the operation control and as the data transmitted to the drive itself; and an identification-information change device for changing the identification information stored in the storage device in accordance with the identification information included in the data discriminated as the data for change of the identification information. 
   By combining the above transmitter and drive, it is possible to realize the remote control system of the present invention. 
   In the case of a transmitter according to the present invention, it may also be allowed that when a predetermined identification-information-change-designating operation is performed on the input unit, the data generation device generates the data so that change-designating information for designating the change of the identification information is added to the discrimination information and the identification information, which is set through the input unit when the change of the identification information is designated, is included in the data. It may also be allowed that the identification information includes transmitter-specifying information for distinguishing a plurality of transmitters from each other and drive-specifying information for distinguishing a plurality of drives from each other and the data generation device can independently change the transmitter-specifying information and the drive-specifying information included in the data in accordance with an operation of the input unit performed by the user. 
   Moreover, in the case of a drive according to the present invention, it may be allowed that the first discrimination device discriminates whether or not the received data is the data for change of the identification information based on whether or not predetermined change-designating information is added to the discrimination information. It may be allowed that the identification information includes transmitter-specifying information for distinguishing a plurality of transmitters from each other and drive-specifying information for distinguishing a plurality of drives from each other and the second discrimination device discriminates that the received data is the data transmitted to the drive itself when the transmitter-specifying information and drive-specifying information included in the received data coincide with the transmitter-specifying information and drive-specifying information stored in the storage device, respectively. 
   When a plurality of transmitters, each of which is the same as the above transmitter, are used at the same time, it may be allowed to set timings when transmitters transmit data to periods different from each other in accordance with the transmitter-specifying information set to the respective transmitters. For example, it is preferable to provide each of the transmitters with a reception device for receiving the data transmitted from another transmitter and a timing setting device for setting self-data transmission timing so that the self-data transmission timing does not overlap with the transmission timing of the data sent from the other transmitters. 
   According to still further aspect of the present invention, there is provided another remote control system making it possible to separately control a plurality of drives by relating a transmitter with a drive to be remote-controlled by data sent from the transmitter in accordance with identification information included in the data, wherein the transmitter is provided with an identification-information change device for changing the identification information included in the data in response to an identification-information-setting operation performed by a user on a predetermined input unit, and a change-information addition device for adding change-designating information for designating change of the identification information to the data in response to an identification-information-change-designating operation performed by the user on the input unit, and wherein each of the drives is provided with a storage device for storing the identification information and an identification-information change device for changing the identification information stored in the storage device in accordance with identification information included in the data to which the change-designating information is added. 
   According to this remote control system, it is possible for a user to set identification information for relating a transmitter with a drive by adding predetermined change-designating information to the data sent from the transmitter. Therefore, it is unnecessary to perform production management and stock management of drives in accordance with the type of identification information and the labor required for production, circulation, and sale of drives is reduced. A user does not have to always prepare special components for change of identification information and therefore, the user can easily enjoy remote control. Moreover, in a transmitter, at least some of the circuits for transmitting the data for operation control can also be used for transmission of identification-information-change data, and in a drive, at least some of the circuits for receiving operation control data can also be used for receiving identification-information change data. Therefore, it is possible to reduce the numbers of components of a transmitter and thus a drive and contribute to reduction in costs and sizes of them. 
   Still another aspect of the present invention, there is provided another transmitter used for a remote control system, the system making it possible to separately control a plurality of drives by relating the transmitter with the drive to be remote-controlled by data sent from the transmitter in accordance with identification information included in the data, the transmitter comprising: an identification-information change device for changing identification information included in the data in response to an identification-information-setting operation performed by a user on a predetermined input unit; and a change-information addition device for adding change-designating information for designating change of the identification information to the data in response to an identification-information-change-designating operation performed by the user on the input unit. 
   Still another aspect of the present invention, there is provided another drive used for a remote control system, the system making it possible to separately control a plurality of drives by relating a transmitter with a drive to be remote-controlled by data sent from the transmitter, the drive comprising: a storage device for storing the identification information; and an identification-information change device for changing the identification information stored in the storage device in accordance with the identification information included in the received data including predetermined change-designating information. 
   By combining the transmitter with the drives, it is possible to constitute the above-describe another remote-control system. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
       FIG. 1  is an illustration showing a schematic configuration of a remote-control system of the present invention; 
       FIG. 2  is a perspective view of the front-side appearance of a transmitter; 
       FIG. 3  is a back view of a transmitter; 
       FIG. 4  is a sectional view of a concave portion formed at the front side of a transmitter; 
       FIG. 5  is a functional block diagram of a transmitter; 
       FIGS. 6A and 6B  are illustrations showing states of transmitting data from transmitters; 
       FIG. 7  is an illustration showing an electric-train model as an example of a drive; 
       FIG. 8  is a functional block diagram of an electric-train model; 
       FIG. 9  is a flowchart showing the processing for a transmitter to transmit data; 
       FIG. 10  is a flowchart showing the processing for a drive to receive data; 
       FIGS. 11A and 11B  are illustrations showing relations between transmitters and drives corresponding to identification-information set states; and 
       FIGS. 12A and 12B  are illustrations showing other relations between transmitters and drives corresponding to identification-information set states. 
   

   DESCRIPTION OF THE PREFERRED EMBODIMENT 
     FIG. 1  is an illustration showing a schematic configuration of a remote control system of the present invention. In  FIG. 1 , a case is assumed in which six drives  1  . . .  1  are separately remote-controlled by three transmitters  2  . . .  2  at the same place. 
   Any one of the ID codes  1  to  4  is set to the drives  1  . . .  1  and transmitters  2  . . .  2  as transmitter-specifying information and any one of the car numbers  1  to  8  is set to the drives  1  . . .  1  and transmitters  2  . . .  2  as drive-specifying information. In the case of this embodiment, a combination between an ID code and a car number functions as the identification information for relating the transmitter  2  with the drive  1 . Infrared radiation is used for remote control of each drive  1 . Therefore, a remote-control-signal light-emitting section  3  is mounted on each transmitter  2  and a remote-control-signal light-receiving section  4  is mounted on each drive  1 . Moreover, a remote-control-signal light-receiving section  5  is mounted on each transmitter  2  in order to synchronize data transmission from each transmitter  2 . 
     FIGS. 2 and 3  show details of the transmitter  2 , in which  FIG. 2  is a perspective view of the transmitter  2  viewed from the front side (user side) and  FIG. 3  is a back view of the transmitter  2 . As shown in these illustrations, the transmitter  2  has a casing  21  formed of a resin and the like. A light-emitting section  22  (corresponding to a remote-control-signal light-emitting section  3  in  FIG. 1 ) for transmitting data to the drive  1  is set on the back  21   a  of the casing  21  and a light-emitting section  23  for transmitting the data for rewriting the identification information for the drive  1  is set at the front  21   b  of the casing  21 . A cover  21   c  allowing infrared radiation to pass therethrough is set to the back  21   a  and the light-emitting section  23  is set to the inside of the cover  21   c . Moreover, light-receiving sections  25  and  25  serving as the remote-control-signal light-receiving section  5  in  FIG. 1  are set to the inside of the cover  21   c.    
   As shown also in  FIG. 4 , a concave portion  21   d  is formed at the front  21   b  of the casing  21  and covered by a lid  24 . The lid  24  can be opened to the front side about a hinge  24   a  at the bottom end of the lid  24 . The light-emitting section  23  is set to the face of the wall of the concave portion  21   d . Charge terminals  33   a  and  33   b  are set on the bottom face of the concave portion  21   d . These terminals  33   a  and  33   b  contact with a charge terminal of an electric-train model  50  (refer to  FIG. 7 ) serving as the drive  1  housed in the concave portion  21   d  to charge a battery built in the electric-train model  50 . 
   According to the above transmitter  2 , it is possible to prevent the infrared radiation emitted from the light-emitting section  23  from leaking to the outside of the concave portion  21   d  by housing the drive  1  in the concave portion  21   d  and closing the lid  24 . Therefore, it is possible to eliminate a fear that identification information for the drive  1  outside of the concave portion  21   d  is carelessly rewritten. 
   As shown in  FIG. 2 , an F/R switch  26  to be operated to switch forward and reverse rotations of the drive  1 , a speed control dial  27  to be operated to set a speed, a rewrite control switch  28  to be operated to designate rewriting of identification information for the drive  1 , an ID-code-setting switch  29  for setting an ID code of the transmitter  2 , car-number selection switches  30  . . .  30  for designating car-number, a power-source switch  31 , and a charge switch  32  are set to the upper face  21   e  of the casing  21  as an input unit  10 . 
   The F/R switch  26  can be switched to forward-rotation position or reverse-rotation position and it outputs signals corresponding to these positions. The speed control dial  27  outputs a speed designation signal proportional to a rotation control amount from the initial position corresponding to the speed  0 . The rewrite control switch  28  is a push-button switch that outputs an on-signal when it is pushed. The ID-code setting switch  29  can be switched at four positions corresponding to ID codes  1  to  4  and it outputs signals corresponding to these positions. By switching the ID-code setting switch  29 , it is possible to select an ID of the transmitter  2  among IDs  1  to  4 . The car-number selection switch  30  is a push-button switch that outputs an on-signal corresponding to a push control. Eight car-number selection switches  30  are provided correspondingly to car numbers  1  to  8  by one to one. By pushing any one of the car-number selection switches  30 , it is possible to select a car number corresponding to the selected car-number selection switch  30 . 
     FIG. 5  shows a circuit configuration of the transmitter  2 . Signals corresponding to operations of input units  26  to  30  are input to a control circuit  41  through an input circuit  40 . The remote-control-signal light-emitting sections  22  and  23  are respectively constituted by including light-emitting device such as an LED and emit infrared radiation corresponding to a designation by a transmission circuit  42  or  43 . The transmission circuits  42  and  43  output transmission data to the remote-control-signal light-emitting section  22  or  23  in accordance with the timing designated by an output-timing generation circuit  44 . The output-timing generation circuit  44  counts time in accordance with a timer set value supplied from the control circuit  41 . When the time corresponding to the timer set value elapses, the circuit  44  outputs a transmission designation to the transmission circuit  42  or  43 . Frequencies of infrared-radiation carrier signals output from the remote-control-signal light-emitting sections  22  and  23  are the same in all transmitters  2 . 
   Data to be output to the remote-control-signal light-emitting section  22  on the back  21   a  of the transmitter  2  is generated by the control-signal generation circuit  45 . The transmission circuit  42  modulates the data generated by the control-signal generation circuit  45  in accordance with a remote-control-signal carrier signal to drive the remote-control-signal light-emitting section  22 . 
   In this case, one-block remote-control data generated by the control-signal generation circuit  45  is constituted by an ID code, motor control information, a car number, and a command for realizing an additional function as shown in  FIG. 6A . Moreover, the motor control information is constituted by information for designating whether forward direction or reverse direction (F/R determination) of the rotational direction of a motor and information for designating a motor-driving speed. Two-bit-data corresponding to an ID code selected by the ID-code setting switch  29  is set to the ID-code part, one-bit data showing whether the F/R switch  26  is set to forward-rotation position or reverse-rotation position is set to the F/R-discriminating part of a motor, and five-bit data for designating a speed corresponding to a rotation control amount of the speed control dial  27  is set to the motor control information part. Three-bit data for designating any one of car numbers  1  to  8  selected by the car-number selection switch  30  is set to the car-number part. The command part is constituted by a predetermined number of bits and a code for designating an additional function is set to the command part according to necessity. The number of bits of the one-block remote-control data is always constant. Therefore, the time required to transmit the one-block remote-control data is also constant. 
   The remote-control-signal light-receiving section  25  shown in  FIG. 5  receives the infrared radiation sent from another transmitter  2  and outputs a signal obtained by removing carrier components from the received infrared radiation to a reception circuit  47 . The reception circuit  47  decodes a signal supplied from the remote-control-signal light-receiving section  25  into one-block remote-control data and outputs the data to a received-data discrimination circuit  48 . 
   The received-data discrimination circuit  48  discriminates the ID code of the received data supplied from the reception circuit  47  and supplies the determination result to the control circuit  41 . The control circuit  41  controls the output timing of the data supplied from the transmission circuit  42  in accordance with signals supplied from the received-data discrimination circuit  48  and input circuit  40 . Thus, the data transmitted from another transmitter  2  is received to set the output timing of the data in order to prevent interference due to simultaneous transmission of remote-control data from a plurality of transmitters  2 . This point is described below in detail. 
     FIG. 6A  shows how to take the transmission timing when four transmitters  2  are simultaneously operated. As shown in  FIG. 6A , infrared-radiation emission timings from the remote-control-signal light-emitting section  22  are set to periods different from each other in accordance with ID codes set to the transmitter  2  and the drive  1  to be controlled by the transmitter  2  in common. 
   The time length for one transmitter  2  to transmit a remote-control signal is equal to T and each transmitter  2  repeats transmission of a remote-control signal at a cycle corresponding to the number of transmitters  2 ×transmission time length (=4T). Moreover, the transmission timing of each transmitter  2  is shifted every T from ID code=1 in order. Because each transmitter  2  controls transmission timing in accordance with the above relation, it is possible to prevent transmission periods of four transmitters  2  from overlapping with each other. To realize the above transmission control, it is allowed for the transmitter  2  of ID code=2 in  FIG. 6A  to control transmission timing as described below. 
   First, when receiving the data of ID code=1 at the time t 1 , the transmitter  2  starts outputting the transmission data of its own and completes outputting the transmission data of its own at the time t 2 . When completing the transmission, the transmitter  2  checks the data received by the reception circuit  47  (refer to  FIG. 5 ) to confirm that interference between signals does not occur. Thereafter, the transmitter  2  sets a transmission timer for counting the next output timing 3T later to start timer counting. 
   When receiving the remote-control data of ID code=3 at the time t 3 , the transmitter  2  resets the transmission timer 2T later to start timer counting. When receiving the remote-control data of ID code=4 at the time t 4 , the transmitter  2  resets the transmission timer 1T later to start timer counting. 
   Then, when the power source of the transmitter  2  of ID code=1 is turned off or data cannot received from the transmitter  2  of ID code=1 due to noises, it is allowed to start outputting the data of its own when counting by the transmission timer advances by the time T after receiving the data of ID code=4. Moreover, even if signals from another transmitter  2  cannot be received, it is possible to continue outputting transmission data at the cycle 4T by using the time  3 T set to the transmission timer when transmission of the data of its own is completed. 
   Though a case of using four transmitters  2  is described above, it is possible to control transmission timing even in the case of five transmitters or more by adding an ID code. The cycle of transmission timing of each transmitter  2  is equal to N×T (N denotes the number of transmitters). Moreover, it is allowed to set the entire cycle to a value larger than NT by setting a blank period in which no transmitter transmits data between periods in which transmitters  2  transmit data. 
   The transmission timing of the data sent from the light-emitting section  23  in  FIG. 5  is consecutively set as shown in  FIG. 6B  (three consecutive times in the case of this example). The data to be output to the remote-control-signal light-emitting section  23  at the front  21   b  of the transmitter  2  is generated by an identification-information-rewrite-signal generation circuit  46  and the transmission circuit  43  drives the remote-control-signal light-emitting section  23  by modulating the data generated by the identification-information-rewrite-signal generation circuit  46  in accordance with a remote-control-signal carrier signal. The data generated by the identification-information-rewrite-signal generation circuit  46  has the same structure as that generated by the control-signal generation circuit  45  as shown in  FIG. 6B . However, a specific code for designating rewriting of the ID code and car number of the drive  1  (hereafter referred to as rewrite designation code) is set to the command part of the above data as change-designating information. That is, in the case of this embodiment, data is transmitted from the remote-control-signal light-emitting section  23  through the control circuit  41 , identification-information-rewrite-signal generation circuit  46 , and transmission circuit  47  only when designating change of ID codes and car numbers from the transmitter  2  to the drive  1 . 
   The control circuit  41  discriminates whether to transmit the data for operation control of the drive  1  or the data for change of identification information depending on the fact that the rewrite control switch  28  is turned on or not and supplies signals corresponding to operation states of the input units  26  to  30  to the control-signal generation circuit  45  when transmitting the data for operation control of the drive  1  and to the identification-information-rewrite-signal generation circuit  46  when transmitting the data for designating change of identification information. When the control-signal generation circuit  45  receives a signal, remote-control data for control of the drive  1  is generated correspondingly to operation states of the input units  26  to  30 . When the identification-information-rewrite-signal generation circuit  46  receives a signal, remote-control data for change of the identification information for the drive  1  is generated correspondingly to operation states of the input units  28  to  30 . 
   It is also allowed to communize the generation circuits  45  and  46  and alternatively transmit data from either of the remote-control-signal light-emitting sections  22  and  23  depending on the fact that the rewrite control switch  28  is turned on or not. In this case, for an ID code, motor control information, and a car number in one-block remote-control data, it is allowed to always set the data corresponding to operation states of the ID-code setting switch  29 , F/R switch  26 , speed control dial  27 , and car-number selection switch  30  independently of the fact that the rewrite control switch  28  is turned on or not, set a rewrite designation code to the command part to transmit data from the remote-control-signal light-emitting section  23  only when the rewrite control switch  28  is turned on, and transmit data from the remote-control-signal light-emitting section  22  when controlling operations of the drive  1 . Moreover, it is allowed to communize the remote-control-signal light-emitting sections  22  and  23  and transmit the data for operation control of the drive  1  and identification-information-rewriting data from the same light-emitting section. 
   The control circuit  41  is preferably constituted by combining a microcomputer with a predetermined program. It is allowed to constitute the transmission circuits  42  and  43 , output-timing generation circuit  44 , control-signal generation circuit  45 , identification-information-rewrite-signal generation circuit  46 , reception circuit  47 , and received-data discrimination circuit  48  as logic circuits or constitute them by combining a microcomputer with a predetermined program similarly to the case of the control circuit  41 . Moreover, it is allowed to unite at least one of the output-timing generation circuit  44 , control-signal generation circuit  45 , identification-information-rewrite-signal generation circuit  46 , and received-data discrimination circuit  48  into the control circuit  41 . 
     FIG. 7  is a side view showing an embodiment of the drive  1 . In the case of this embodiment, the drive  1  is constituted as the small electric-train model  50 . The electric-train model  50  has a chassis  51  and a body  52  put on the chassis  51 . Front wheels  53  are provided for the front of the chassis  51  and rear wheels  54  are provided for the rear of the chassis  51 . The front wheel  53  is rotatably set to the chassis  51  through a wheel shaft  55 . The rear wheel  54  is set to a transmission gear  57  through the wheel  56 . The transmission gear  57  transmits the rotation of a motor  58  serving as a driving source to a wheel shaft  56 . A controller  59  constituted as a one-chip microcomputer is set above the transmission gear  57  and motor  58 . The controller  59  controls operations of the motor  58  in accordance with the data sent from a remote-control-signal light-receiving section  60  set to the body  52 . 
     FIG. 8  shows a circuit configuration of a control system mounted on the electric-train model  50 . The above remote-control-signal light-receiving section  60  is set to the car model  50 . The remote-control-signal light-receiving section  60  receives the infrared radiation emitted from the transmitter  2  and outputs a signal obtained by removing carrier components from the received infrared radiation to a reception circuit  71 . The reception circuit  71  decodes the signal supplied from the remote-control-signal light-receiving section  60  into one-block remote-control data and outputs the data to a remote-control-data discrimination circuit  72 . The one-block remote-control data is shown in  FIGS. 6A and 6B . The remote-control-data discrimination circuit  72  discriminates which is received, the data for controlling operations of the drive  1  or the data for designating rewriting (changing) of the identification information for the drive  1 , in accordance with command part of the received data supplied from the reception circuit  71 . 
   When the remote-control-data discrimination circuit  72  discriminates that the received data is the data for controlling operations of the drive  1 , an identification-information read circuit  77  reads the identification information assigned to the drive  1  itself from an identification-information storage memory  78  and an identification-information discrimination circuit  73  compares the identification information included in received data with the identification information for the drive  1  itself. When these pieces of identification information coincide with each other, the received data is sent to a driving-section control circuit  74 . Then, the driving-section control circuit  74  supplies a motor-driving signal to a driving circuit  75  in accordance with the motor control information included in the received data. The driving circuit  75  drives the motor  58  in accordance with the supplied motor-driving signal. 
   When the remote-control-data discrimination circuit  72  discriminates that received data is the data for designating rewriting of identification information, the identification information (comprising an ID code and a car number) included in the data is written in the identification-information storage memory  78  by the identification-information rewrite circuit  76 . Thereby, the identification information written in the identification-information storage memory  78  is changed. 
   It is preferable that identification information is stored in the identification-information storage memory  78  without backup by a power source by using a nonvolatile memory such as an EEPROM. It is allowed to constitute the reception circuit  71 , remote-control-data discrimination circuit  72 , identification-information discrimination circuit  73 , driving-section control circuit  74 , driving circuit  75 , identification-information rewrite circuit  76 , and identification-information read circuit  77  as logic circuits or by combining a microcomputer with a predetermined program. Moreover, it is allowed to set an identification-information discrimination circuit, an identification-information read circuit, and an identification-information storage memory different from the identification-information discrimination circuit  73 , identification-information read circuit  77 , and identification-information storage memory  78  between the reception circuit  71  and remote-control-data discrimination circuit  72  and select received data before sending data to the remote-control-data discrimination circuit  72 . 
     FIG. 9  is a flowchart showing operations of the transmitter  2  when transmitting data. Under the normal state, the transmitter  2  repeats data transmission at the timing shown in  FIG. 6A  and the processing in  FIG. 9  is performed when the next transmission timing comes. In the case of this processing, the transmitter  2  first decides whether the rewrite control switch  28  is turned on or not (whether the switch  28  is pushed or not) (step S 1 ). When the transmitter  2  decides that the switch  28  is not turned on, it generates the data for controlling operations of the motor  58  in accordance with the operation state of the F/R switch  26  or the like and transmits the data from the light-emitting section  22  (step S 2 ). When the transmitter  2  decides that the rewrite control switch  28  is turned on, it generates the data for designating rewriting to the identification information set by the ID-code setting switch  29  and car-number selection switch  30  and transmits the data from the light-emitting section  23  at the front side (step S 3 ). Then, the transmitter  2  adds 1 to a counter serving as a variable for measuring the number of consecutive transmission times of rewrite designation data (step S 4 ) and then, decides whether the rewrite control switch  28  is continuously turned on or not (step S 5 ). When the switch  28  is turned on, the transmitter  2  decides whether the counted value of the counter reaches  3  (step S 6 ). When the value is less than 3, the transmitter  2  returns to step S 3  to retransmit the identification-information rewrite designation data. When the transmitter  2  decides in step S 5  that the rewrite control switch  28  is turned off or decides in step S 6  that the counted value reaches  3 , it completes the processing in  FIG. 9 . 
   According to the above processing, when a user continuously pushes the rewrite control switch  28 , the data for designating rewriting of identification information is transmitted from the light-emitting section  23  by three consecutive frames as shown in  FIG. 6B . However, in the case other than the above, the data for drive controlling the motor  58  is transmitted from the light-emitting section  22 . 
     FIG. 10  is a flowchart showing the reception processing to be executed by the controller  59  of the electric-train model  50  serving as a drive when the controller  59  receives data from the transmitter  2 . The controller  59  analyzes a command part included in received data to discriminate whether the received data is the data for controlling operations of the motor  58  or not (step S 11 ). For example, the controller  59  decides the received data as the data for controlling operations of the motor  58  when a specific code for realizing a specific function is not set to the command part. Moreover, when generating the data for controlling operations of the motor  58  by the transmitter  2 , it is allowed to include a specific code for designating the data for operation control in the command part and determine the data for operation control of the motor  58  or not depending on presence or absence of the specific code. 
   When the controller  59  decides that the received data is the data for controlling operations of the motor  58 , it discriminates whether the ID code included in the data is the same as the ID code of its own recorded in the identification-information storage memory  78  (step S 12 ). When the ID code included in the data is different from the ID code of its own, the controller  59  ignores the data and temporarily ends the processing in  FIG. 10 . In this case, the controller  59  waits for the next data to be received. 
   When the ID code included in the data is the same as the ID code of the self, the controller  59  decides whether the car number included in the data is the same as the car number of its own stored in the identification-information storage memory  78  (step S 13 ). When the car number included in the data is different from the car number of the train model  50  itself, the controller  59  ignores the data and waits for the next data to be received. When the car number included in the data is the same as the car number of the train model  50  itself, the controller  59  controls the motor  58  in accordance with the control information included in the data (step S 14 ) and then, waits for the next data to be received. 
   When the controller  59  decides that the received data is not the data for controlling operations of the motor  58  in step S 11 , it decides whether a rewrite designation code is included in the command part or not (step S 15 ). When the rewrite designation cord is not included, the controller  59  resets a counter for discriminating a consecutive number of reception times of rewrite designation codes to 0 (step S 20 ) and waits for the next data to be received. When the rewrite designation code is included, the controller  59  adds 1 to the counter (step S 16 ) and decides whether a counted value reaches  3  or not, that is, whether the remote-control data including the rewrite designation code is received three times or not (step S 17 ). When the counted value does not reach  3 , waits for the next remote-control data to be received, when the counted value does reach  3 , the controller  59  rewrites the ID code and car number recorded in the identification-information storage memory  78  to the ID code and car number included in the data received at that point of time (step S 18 ). Thereafter, the controller  59  resets the counter to 0 (step S 19 ) and waits for the next data to be received. 
   According to the above processing, ID codes and car numbers are changed when the electric-train model  50  serving as a drive receives the remote-control data including a rewrite designation code three times consecutively and operations of the motor  58  are controlled in accordance with motor control information only when the ID code and car number included in the data for driving the motor  58  coincide with each other when the data is received. 
   In the case of the above embodiment, ID codes and car numbers are simultaneously changed. However, it is also allowed to separately perform change of ID codes and change of car numbers by separately generating a command for changing ID codes and a command for changing car numbers. Moreover, it is allowed to first compare the ID code in received data with the ID code set to a drive (step S 12 ) and then decide a command (step S 11 ) so that car numbers of only a drive to which the ID code same as that of a transmitter is set can be changed. Furthermore, though a case is described in which identification information is changed when receiving identification-information-change designation data three times consecutively, it is allowed to change the identification information when receiving the data once or three times or more. 
     FIGS. 11A and 11B  and  FIGS. 12A and 12B  illustrate operation states when two transmitters and two drives are used. In  FIG. 11A , the transmitter A can control the drive A having the same an ID code and a car number as its own. But the transmitter B can control neither drive A nor drive B. By transmitting identification-information change data from the transmitter B to the drive B ( FIG. 11B ), the identification information for the drive B is changed to the identification information for the transmitter B ( FIG. 12A ). As a result, the transmitters A and B can respectively control a drive having the same identification information as the information for its own ( FIG. 12B ). 
   The present invention is not restricted to the above embodiment but it can be embodied by various embodiments. For example, a drive is not restricted to a train but it can use any one of embodiments simulating various movable bodies. A transmitter can use a portable type or fixed type. Moreover, it is allowed to use a portable unit such as a portable game machine or portable telephone as a transmitter by installing a specific program in the game machine or portable telephone. 
   A drive is not restricted to a unit simulating a train but it is allowed to include various units. It is allowed to control sections different from each other of an integrally constituted toy or model as drives different from each other. 
   As described above, according to the present invention, it is possible for a user to set the identification information set to a drive by a transmitter. Therefore, it is unnecessary to perform the production management and stock management of drives in accordance with the type of identification information and thus, labors required for production, circulation, and sale of drives can be reduced. A user does not have to always prepare special components for change of identification information and therefore, the user can easily enjoy remove control. Moreover, a transmitter can use at least some of circuits for transmitting operation control data to a drive for transmission of identification-information change data and a drive can use at least some of circuits for receiving operation control data for reception of identification-information change data. Therefore, it is possible to reduce the numbers of components of a transmitter and a drive and contribute to reduction of the transmitter and drive in cost and size.