JP2006259886A - Control device, method and program of device having plug-and-play function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively manage the connection of devices, by limiting the start of an application corresponding to the connected device according to the device. <P>SOLUTION: This device implements control, when the device having a plug-and-play function is connected with a host device, having plug-and-play function. The host device 1 comprises an application start means 4 for starting the application 3, in response to the connected device 2, a piece of set data 5 in which the number of startable applications is set, and a control means 4 for keeping the start of the application corresponding to the device 2, at a standby state, when the devices 2 exceeds the number set in the set data are connected. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a device control apparatus, a control method, and a control program when a device device is connected to a host device to function.

Host devices to which device devices can be connected are roughly classified into the following two patterns.
(1) A pattern in which a memory and CPU have a margin like a personal computer (PC) and multiple applications can be started without any problems. It is difficult to guarantee the operation without it

  In the case of the above pattern (1), the necessity of performing the restriction is not large. However, in the case of the pattern (2), the memory and CPU occupancy used in one application greatly affect the host. Some restrictions need to be placed on the equipment.

In the case of the pattern (2), in order to allow only the connection of a single device device and enable the subsequent device device, disconnect the first device device, and then connect the device device to be enabled. It is carried out. For example, device devices connected by USB have the same types of device devices, such as input support devices such as keyboards and mice, storage devices such as flash disks and hard disks, and audio devices such as speakers. Different types of device devices may be connected at the same time. Various applications corresponding to these device devices are activated. Also, depending on the type of application to be activated, there are some applications that continue to be activated until they are disconnected after being activated, such as a mouse. Some applications automatically terminate the application at that point.
JP 2002-94910 A

  As a recent market trend to connect the above device devices, wireless USB is being developed and further convenience is expected to improve. Therefore, connection management is a major issue for embedded host devices. It will be.

  The present invention has been made in consideration of such circumstances, and it is possible to effectively perform connection management of device devices by restricting activation of applications corresponding to the device devices to be connected in accordance with the device devices. It is an object to provide a control device, a control method, and a control program having a possible plug and play function.

  The apparatus for controlling a device having a plug and play function according to the first aspect of the present invention is a device for performing control when a device device having a plug and play function is connected to a host device having a plug and play function. The host device includes an application activation unit that activates an application corresponding to the connected device device, setting data in which the number of applications that can be activated is set, and a number that exceeds the number set in the setting data And a control means for placing an application corresponding to the device device in a standby state when the device device is connected.

  The invention according to claim 2 is the control device according to claim 1, further comprising memory data relating to a memory required for starting each application, wherein the control means corresponds to the connected device device. When the memory of the application that has been used exceeds the memory capacity that can be used by the entire host device, control is performed to activate the application corresponding to the device device in a standby state.

  A third aspect of the present invention is the control apparatus according to the first aspect, wherein the control unit starts an application corresponding to the device device in a standby state when the setting data is satisfied. Features.

  According to a fourth aspect of the present invention, there is provided the control device according to the second aspect, wherein the control unit is in a state where a memory of an application corresponding to the device device in a standby state satisfies a memory capacity of the host device itself or less. In this case, an application corresponding to the device device is activated.

  According to a fifth aspect of the present invention, there is provided a method for controlling a device having a plug-and-play function when a device device having a plug-and-play function is connected to a host device having a plug-and-play function. A step of monitoring the number of device devices connected to the host device, and activation of an application corresponding to the device device when the number of device devices connected to the host device exceeds setting data And a step of setting the state to a standby state.

  A sixth aspect of the present invention is the control method according to the fifth aspect, wherein a step of monitoring a memory required for starting an application corresponding to the connected device device, and the device device connected to the host device When the memory of the application corresponding to the host device exceeds the memory capacity of the entire host device, the step of placing the application corresponding to the device device in a standby state is further executed.

  The invention according to claim 7 is the control method according to claim 5, wherein when the number of connected device devices satisfies the setting data, an application corresponding to the device device in a standby state is provided. It is characterized by starting.

  The invention according to claim 8 is the control method according to claim 6, wherein when the memory of the application corresponding to the device device in a standby state satisfies a memory capacity of the host device itself or less, the device It is characterized by starting an application corresponding to the device.

  The invention described in claim 9 is a control program for a device having a plug-and-play function for causing a host device to execute the steps described in any one of claims 5 to 8.

  According to the present invention, the number of device devices connectable to the host device is set in the setting data, and when a device device exceeding the number of setting data is connected, the application corresponding to the device device is started. Since the standby state is set, connection management of device devices can be performed effectively.

  In addition, when the memory of the application corresponding to the connected device device exceeds the memory capacity that can be used by the entire host device, control is performed to activate the application corresponding to the device in a standby state. , Device device connection management can be performed effectively.

  FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. As shown in FIG. 1, the device device 2 can be connected to the host device 1. In this case, a plurality of device devices 2 are connected to the host device 1. Both the host device 1 and the device device 2 have a plug and play function.

  The host device 1 includes a plurality of applications 3 individually corresponding to the device devices 2. The device device 2 is connected to the plug and play detection control unit 4 in the host device 1. Further, the host device 1 has setting data 5 in which the number of device devices to be connected is set, an activation wait application link list 6, an active application link list 7, and an activation end application link list 8. .

  The plug and play detection control unit 4 performs control for starting an application. The activated application notifies the plug-and-play detection control unit 4 of the termination after the termination. In this case, the plug-and-play detection control unit 4 activates an application corresponding to the connected device device.

  FIG. 2 shows device device management information stored in the plug-and-play detection control unit 4 and includes “link to next information”, “device-specific cookie information”, “device connection position information”, and “application process number”. , “Device-specific information” is provided.

  The number of connectable device devices is input from the setting data 5 to the plug and play detection control unit 4. Then, the plug-and-play detection control unit 4 compares the number of connected device devices with the data from the setting data 5. As a result of comparison, when the number of device devices exceeds the number set in the setting data 5, the activation of the application of the device device is set in a standby state.

  Further, the plug-and-play detection control unit 4 automatically starts the application of the standby device device when the application corresponding to the connected device device 2 ends. As a result, since the device device 2 is connected to the host device 1 and the applications are started in order, connection management of the device device 2 can be performed effectively.

  In addition, the host device 1 includes memory data related to a memory necessary for starting up each application 3. The plug-and-play detection control unit 4 compares this memory data with the memory capacity that can be used by the host device 1, and when the memory data of the device device 2 exceeds the memory capacity as a result of the comparison, the plug-and-play detection control unit 4 Make the activated application start up.

  Further, the plug-and-play detection control unit 4 automatically activates the application 3 of the device device 2 in the standby state when the activated application 3 ends and the memory capacity of the host device 1 is sufficient. Also in this manner, the device apparatus 2 is connected to the host apparatus 1 and the applications are started in order, so that connection management of the device apparatus 2 can be performed effectively.

  FIG. 3 shows a flowchart of this embodiment, which is stored in a control program in the plug and play detection control unit 4. In step S1, the connection state of the device device 2 is monitored, and in step S2, it is monitored whether the application 3 has ended. In step S3, event monitoring and loop activation are performed, and in step S4, event reception is waited. In step S5, the received events are compared.

  If the device is connected as a result of comparison, the process proceeds to step S6. If the device is disconnected, the process proceeds to step S21. When the application 3 is completed, the process proceeds to step S37.

  In step S6, the application 3 corresponding to the connected device is selected, the presence / absence of the activated application is detected (step S7), and if there is an application, the number of activated applications is checked (step S9). If the number of activations exceeds the number in the setting data 5, the information is registered in the pending application link list (step S15).

  When the activation number is smaller than the number in the setting data 5, the used memory is checked (step S10). As a result, when the memory capacity of the entire host device is exceeded, the information is registered in the pending application link list (step S15). In other cases, the application 3 corresponding to the connected device device 2 is activated (step S11), the activated application 3 is registered in the activated application link list (step S12), and then the application 3 is activated. The number and the activation memory are added (step S13), and the process proceeds to step S14.

  On the other hand, in step S21, the disconnected device 2 is searched, and in step S22, the presence or absence of the device is compared. If there is no device device 2 in step S22, the corresponding device device is searched from the pending application device (step S23), and the presence or absence of the device is detected in step S24. If no device device is detected, the device device is searched for from the end application device (step S25), and the device is detected in step S26. If no device is detected, the process proceeds to the event monitoring loop in step S14.

  If there is a corresponding device in step S22, the application 3 is forcibly terminated (step S28), the number of activations and the memory are subtracted (step S29), and deleted from the activated application link list (step S30). Then, information is collected from the pending list (step S31), and the presence / absence of the activated application is detected in step S32. Step S33 is processing following step S32, and checks the number of activations of all applications. Thereafter, in step S34, the used memory is checked. If the memory capacity is not exceeded, an application corresponding to the device is activated (step S43). In the above steps S32, S33, and S34, if there is no application, if the number of activations is exceeded, and if the used memory is exceeded, the process proceeds to step S14.

  In step S37 and step S38, the corresponding device device 2 is searched from the running application. In step S39, the presence / absence of the device device is detected. If there is no device device, the process proceeds to step S14. If there is a device device, the process proceeds to step S40, where the activation number and memory are subtracted and deleted from the activated application link list (step S41). In step S42, the corresponding information is moved from the active application link list to the end application link list, and the process proceeds to step S32.

  4 to 9 show the contents of each link list based on the above flowchart. In these figures, the case where the memory of the host device 1 is 9 mega (M) is taken as an example.

  In FIG. 4, two device devices 2 are connected, the device device A uses 5M memory, and the device device B uses 3M memory. In this case, the device devices A and B are registered in the active application link list, and the pending application link list and the end application link list are empty.

  In FIG. 5, another device device C that uses 4M memory is connected, and the memory is over. Therefore, the device device C is registered in the pending application link list, and the application enters a standby state.

  In FIG. 6, the application of the device device B is in a finished state, and the device device B is registered in the finished application link list. As a result, the host device 1 has enough memory so that the application corresponding to the device device C is activated.

  In FIG. 7, the device device D using the 7M memory is further connected and the memory is over. Therefore, the device device D is registered in the pending application link list, and the application enters a standby state.

  FIG. 8 shows a state in which the connection of the device device A is cut off. To start the device device D that uses the 7M memory, the memory is over, so the application for the device device D is still in a standby state.

  FIG. 9 shows a state in which the device device C is disconnected from the state of FIG. 8, the application for the device device D is activated, and the application of the device device D is registered in the activated application link list.

  FIG. 10 shows plug and play setting data in the case of USB. In the case of USB, it is determined which application should be activated based on the device information class, subclass, and protocol information. That is, as shown in FIG. 10, when a device of class 6, subclass 1, and protocol 1 is connected, the program / bin / apl_1 is activated. In this case, when the value obtained by adding the used memory described here to the currently used memory exceeds the specified value, the activation standby state is entered. The same applies when the maximum number of simultaneous activations is exceeded.

  On the other hand, when the class is 9, if the subclass is 2, the program / bin / apl_2 is started, and if the subclass is other than 2, the program / bin / apl_3 is started. “*” In FIG. 10 is a wild card, and if there is a match already in the numerical condition, the data is used. If there is no match, it is matched in this condition.

It is a block diagram which shows the structure of one Embodiment of this invention. It is a management table of connected device equipment. It is a flowchart which shows control. It is a state diagram which shows the control with respect to the connection of a device apparatus. FIG. 5 is a state diagram illustrating control for connection of device devices following FIG. 4. It is a state diagram which shows the control with respect to the connection of the device apparatus following FIG. FIG. 7 is a state diagram illustrating control for connection of device devices following FIG. 6. FIG. 8 is a state diagram illustrating control for connection of device devices following FIG. 7. FIG. 9 is a state diagram illustrating control for connection of device devices following FIG. 8. It is a figure which shows the plug and play setting data in USB connection.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Host apparatus 2 Device apparatus 3 Application 4 Plug and play detection control part 5 Plug and play setting data 6 Startup waiting application link list 7 Starting application link list 8 Startup end application link list

Claims (9)

An apparatus for performing control when a device device having a plug and play function is connected to a host device having a plug and play function,
The host device includes an application activation unit that activates an application corresponding to the connected device device, setting data in which the number of applications that can be activated is set, and the device that exceeds the number set in the setting data A control device for a device having a plug-and-play function, comprising control means for waiting for activation of an application corresponding to the device device when the device is connected.   The host device further includes memory data related to a memory required for starting each application, and the control unit is a memory in which an application memory corresponding to the connected device device can be used in the entire host device. 2. The control apparatus for a device having a plug and play function according to claim 1, wherein when the capacity is exceeded, control is performed to activate an application corresponding to the device device in a standby state.   2. The apparatus control apparatus having a plug-and-play function according to claim 1, wherein the control unit activates an application corresponding to the device device in a standby state when the setting data is satisfied. .   The control unit activates an application corresponding to the device device when a memory of an application corresponding to the device device in a standby state satisfies a memory capacity of the host device itself or less. Item 3. A control device for a device having a plug-and-play function according to Item 2. A method for performing control when a device device having a plug and play function is connected to a host device having a plug and play function,
Monitoring the number of device devices connected to the host device, and waiting for activation of an application corresponding to the device device when the number of device devices connected to the host device exceeds setting data And a step for controlling a device having a plug-and-play function.   Monitoring the memory required to start the application corresponding to the connected device, and when the memory of the application corresponding to the device connected to the host device exceeds the memory capacity of the entire host device, 6. The method for controlling a device having a plug and play function according to claim 5, further comprising the step of placing an application corresponding to the device device in a standby state.   6. The plug-and-play function according to claim 5, wherein an application corresponding to the device device in a standby state is activated when the number of connected device devices satisfies the setting data. Device control method.   7. The plug according to claim 6, wherein when a memory of an application corresponding to the device device in the standby state satisfies a memory capacity equal to or less than a memory capacity of the host device itself, the application corresponding to the device device is activated. A method for controlling a device having an and play function.   A control program for a device having a plug and play function for causing a host device to execute each step according to any one of claims 5 to 8.

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