Patent Grant
9729619
This application is based upon and claims the benefit of priority from Japanese Patent Application No. 2013-196634, filed on Sep. 24, 2013, the disclosure of which is incorporated herein in its entirety by reference.
The present invention relates to an information processing system, a processing apparatus, and a distributed processing method and in particular, relates to an information processing system, a processing apparatus, and a distributed processing method for performing a distributed processing among the processing apparatuses.
In recent years, the number of companies which analyze data related to a system or a service and use an analysis result in order to improve the system and the service is increasing. In such analysis system, for example, a server apparatus analyzes data which exists in the server apparatus, performs a rendering operation to generate image data such as a graph or the like, and transmits it to a client apparatus. The client apparatus displays the image data received from the server apparatus.
In such analysis system, when an amount of analysis object data is enormous, it takes much time and much load to perform the analytical process in the server apparatus. For this reason, there is a possibility that a problem in which the service cannot be started because a night batch process is not completed by the start of the office hours in the morning or a system failure impacts the business operation occurs. Further, in order to ensure the processing time, there is a restriction in which the latest data cannot be used as the analysis object data.
Thus, in the analysis system, in addition to improvement of analysis technology, a technology to reduce the load of the analytical process and a technology to avoid a large analysis load are required.
An example of a technology to reduce the load of the server apparatus in the above-mentioned system including the client apparatus and the server apparatus is disclosed in Japanese Patent Application Laid-Open No. 2000-267964.
In the technology disclosed in Japanese Patent Application Laid-Open No. 2000-267964, when a plurality of documents written in HTML (Hyper Text Markup Language) and received from the server apparatus are displayed in the client apparatus, linking the documents is not performed in the server apparatus but performed in the client apparatus according to the script written in HTML.
In the above-mentioned analysis system, by performing a part of the process of the server apparatus in the client apparatus like the invention disclosed in Japanese Patent Application Laid-Open No. 2000-26796, it is possible to reduce the load on the server apparatus. However, when the analysis object data includes confidential information, the data cannot be transmitted to the client apparatus. Therefore, there is a problem that a distributed processing performed by the server apparatus and the client apparatus cannot be achieved.
An exemplary object of the present invention is to solve the above-mentioned problem and provide an information processing system, a processing apparatus, and a distributed processing method for performing a distributed processing even when processing object data includes confidential information.
An information processing system according to an exemplary aspect of the invention includes a first processing apparatus and a second processing apparatus, the second processing apparatus including: an apparatus determination unit which selects the first processing apparatus or the second processing apparatus as an apparatus to perform a predetermined process based on right information indicating a right of a user of the first processing apparatus to input data for the predetermined process; and a second processing unit which transmits the input data for the predetermined process to the first processing apparatus when the first processing apparatus performs the predetermined process, and performs the predetermined process by using the input data for the predetermined process and transmits a processing result of the predetermined process to the first processing apparatus when the second processing apparatus performs the predetermined process, and the first processing apparatus including: a first processing unit which performs the predetermined process by using the input data for the predetermined process that is received from the second processing apparatus when the first processing apparatus performs the predetermined process; and an output unit which outputs the processing result of the predetermined process.
A first processing apparatus of an information processing system including the processing apparatus and other processing apparatus, according to an exemplary aspect of the invention, includes: a processing unit which performs a predetermined process by using input data for the predetermined process that is received from the other processing apparatus when the processing apparatus performs the predetermined process; and an output unit which outputs a processing result of the predetermined process, wherein the other processing apparatus selects the processing apparatus or the other processing apparatus as an apparatus to perform the predetermined process based on right information indicating a right of a user of the processing apparatus to the input data for the predetermined process, transmits the input data for the predetermined process to the processing apparatus when the processing apparatus performs the predetermined process, and performs the predetermined process by using the input data for the predetermined process and transmits the processing result of the predetermined process to the processing apparatus when the other processing apparatus performs the predetermined process.
A second processing apparatus of an information processing system including other processing apparatus and the processing apparatus, according to an exemplary aspect of the invention, includes: an apparatus determination unit which selects the other processing apparatus or the processing apparatus as an apparatus to perform a predetermined process based on right information indicating a right of a user of the other processing apparatus to input data for the predetermined process; and a processing unit which transmits the input data for the predetermined process to the other processing apparatus when the other processing apparatus performs the predetermined process, and performs the predetermined process by using the input data for the predetermined process and transmits a processing result of the predetermined process to the other processing apparatus when the processing apparatus performs the predetermined process, wherein the other processing apparatus performs the predetermined process by using the input data for the predetermined process that is received from the processing apparatus when the other processing apparatus performs the predetermined process, and outputs the processing result of the predetermined process.
A distributed processing method for an information processing system including a first processing apparatus and a second processing apparatus, according to an exemplary aspect of the invention, includes: selecting the first processing apparatus or the second processing apparatus as an apparatus to perform a predetermined process based on right information indicating a right of a user of the first processing apparatus to input data for the predetermined process, in the second processing apparatus; transmitting the input data for the predetermined process to the first processing apparatus when the first processing apparatus performs the predetermined process, and performing the predetermined process by using the input data for the predetermined process and transmitting a processing result of the predetermined process to the first processing apparatus when the second processing apparatus performs the predetermined process, in the second processing apparatus, performing the predetermined process by using the input data for the predetermined process that is received from the second processing apparatus when the first processing apparatus performs the predetermined process, in the first processing apparatus; and outputting the processing result of the predetermined process, in the first processing apparatus.
A first non-transitory computer readable storage medium recording thereon a program, according to an exemplary aspect of the invention, causes a computer, for a processing apparatus of an information processing system including the processing apparatus and other processing apparatus, to function as: a processing unit which performs a predetermined process by using input data for the predetermined process that is received from the other processing apparatus when the processing apparatus performs the predetermined process; and an output unit which outputs a processing result of the predetermined process, wherein the other processing apparatus selects the processing apparatus or the other processing apparatus as an apparatus to perform the predetermined process based on right information indicating a right of a user of the processing apparatus to the input data for the predetermined process, transmits the input data for the predetermined process to the processing apparatus when the processing apparatus performs the predetermined process, and performs the predetermined process by using the input data for the predetermined process and transmits the processing result of the predetermined process to the processing apparatus when the other processing apparatus performs the predetermined process.
A second non-transitory computer readable storage medium recording thereon a program, according to an exemplary aspect of the invention, causes a computer, for a processing apparatus of an information processing system including other processing apparatus and the processing apparatus, to function as: an apparatus determination unit which selects the other processing apparatus or the processing apparatus as an apparatus to perform a predetermined process based on right information indicating a right of a user of the other processing apparatus to input data for the predetermined process; and a processing unit which transmits the input data for the predetermined process to the other processing apparatus when the other processing apparatus performs the predetermined process, and performs the predetermined process by using the input data for the predetermined process and transmits a processing result of the predetermined process to the other processing apparatus when the processing apparatus performs the predetermined process, wherein the other processing apparatus performs the predetermined process by using the input data for the predetermined process that is received from the processing apparatus when the other processing apparatus performs the predetermined process, and outputs the processing result of the predetermined process.
Exemplary features and advantages of the present invention will become apparent from the following detailed description when taken with the accompanying drawings in which:
A first exemplary embodiment of the present invention will be described.
First, a process (a predetermined process) performed by an analysis system, according to the first exemplary embodiment of the present invention, will be described.
The analysis system is one exemplary embodiment of the information processing system of the present invention. The client apparatus 100 is one exemplary embodiment of a first information processing apparatus (or a first processing apparatus) of the present invention and the server apparatus 200 is one exemplary embodiment of a second information processing apparatus (or a second processing apparatus) of the present invention.
The client apparatus 100 includes an input unit 110, a process request unit 120, a client side processing unit (or a first processing unit) 130, and an output unit 140.
The input unit 110 is an input apparatus such as a keyboard or the like, for example, and receives a request to display the analysis result of the processing object data from a user.
The process request unit 120 transmits a processing request to generate the rendering result (image data) based on the analysis result of the processing object data, to the server apparatus 200.
The client side processing unit 130 performs one or more sub processes from a take-over sub process among a series of sub processes (the analytical process and the rendering process).
The output unit 140 is a display apparatus such as a display or the like, for example, and outputs (displays) the rendering result generated by the client side processing unit 130 or the rendering result received from the server apparatus 200. The output unit 140 may output the rendering result by using another form such as a data file or the like.
The server apparatus 200 includes an authentication unit 210, an apparatus determination unit 220, a server side processing unit (or a second processing unit) 230, an authentication information storage unit 240, a right information storage unit 250, a script storage unit (processing program storage unit) 260, and an analysis object data storage unit 270.
The authentication information storage unit 240 stores authentication information to authenticate a user. The authentication information is information such as a user identifier, a password, an identifier of the client apparatus 100, a certificate for the user, or the like, for example, and is used to determine whether or not the user is a qualified user. The authentication information may include information indicating a level or a roll of the user in association with the user identifier.
The authentication unit 210 performs user authentication based on the authentication information.
The right information storage unit 250 stores right information 251. The right information 251 indicates an access right (hereinafter, simply described as a right) of each user with respect to each sub process of the series of sub processes. Note that the right may be a read right, a browsing right, or a use right of the user with respect to each sub process.
In the right information 251, the right with respect to each sub process of the series of the sub processes may be set in association with each level or each roll.
The apparatus determination unit 220 selects a take-over sub process from among the series of the sub processes based on the right information 251. Here, the take-over sub process is a sub process performed firstly among the one or more sub processes to be performed by the client apparatus 100 (the top of the one or more sub processes to be performed by the client apparatus 100).
As shown in
The script storage unit 260 stores a script such as Java Script (registered trademark) or the like, for example. The script is a processing program for performing the analytical process or the rendering process. The type of processing program may be a type other than Java Script, as long as the client side processing unit 130 and the server side processing unit 230 can execute the type of processing program. The client side processing unit 130 and the server side processing unit 230 may use different types of processing programs, each other, for the same sub process.
The analysis object data storage unit 270 stores the analysis object data.
The server side processing unit 230 includes a WEB server 231 and an HTML generation unit 232.
The WEB server 231 performs one or more sub processes before the take-over sub process in the series of the sub processes and transmits a processing response to the client apparatus 100.
The HTML generation unit 232 generates HTML data of the processing response. The HTML generation unit 232 generates the HTML data including the input data of the take-over sub process and the script for each of one or more sub processes from the take-over sub process, or a processing result of the last sub process.
The HTML generation unit 232 may generate each piece of HTML data by using an HTML template or a script template. The HTML generation unit 232 may include the input data in the script.
The processing response may be transmitted with a form other than the HTML, as long as the input data of the take-over sub process and the script for each of one or more sub processes from the take-over sub process, or the processing result of the last sub process can be transmitted to the client apparatus 100.
Note that each of the client apparatus 100 and the server apparatus 200 may include a CPU (Central Processing Unit) and a storage medium storing a program and may be a computer which operates under program control. The authentication information storage unit 240, the right information storage unit 250, the script storage unit 260, and the analysis object data storage unit 270 in the server apparatus 200 may be composed of the individual storage media (such as a memory, a hard disk, or the like) or these units may be configured as one storage medium.
In this case, the client apparatus 100 includes a CPU 101, a storage medium 102, a communication unit 103, the input unit 110, and the output unit 140. The CPU 101 executes the computer program to realize the functions of the process request unit 120 and the client side processing unit 130. The communication unit 103 transmits the processing request to the server apparatus 200 and receives the processing response from the server apparatus 200.
The server apparatus 200 includes a CPU 201, a storage medium 202, and a communication unit 203. The CPU 201 executes the computer program to realize the functions of the authentication unit 210, the apparatus determination unit 220, and the server side processing unit 230. The storage medium 202 stores data of the authentication information storage unit 240, the right information storage unit 250, the script storage unit 260, and the analysis object data storage unit 270. The communication unit 203 receives the processing request from the client apparatus 100 and transmits the processing response to the client apparatus 100.
Next, operation of the first exemplary embodiment of the present invention will be described.
Here, it is assumed that the right information storage unit 250 stores the right information 251 shown in
First, the input unit 110 of the client apparatus 100 receives a request to display an analysis result of processing object data from a user (Step S101). The process request unit 120 transmits a processing request to the server apparatus 200 (Step S102). The processing request includes information required for user authentication. The processing request may include information indicating a range of analysis object data.
For example, the input unit 110 receives an analysis request from a user having a user identifier “user B”. Then, the process request unit 120 transmits a processing request including the user identifier “user B”.
When the authentication unit 210 of the server apparatus 200 receives the processing request from the client apparatus 100 (Step S201), the authentication unit 210 performs user authentication based on the information included in the processing request and the authentication information (Step S202).
When the user is a qualified user, the apparatus determination unit 220 obtains information about a right of the user to input data of each sub process (analytical process and rendering process) from the right information 251. The apparatus determination unit 220 selects a take-over sub process, using the obtained information about a right, according to
When the user has a right to the analysis object data and the analysis result (Step S203/analysis object data: y and rendering object data: y), the apparatus determination unit 220 selects the “analytical process” as the take-over sub process (step S204-1). The HTML generation unit 232 generates HTML data including the analysis object data obtained from the analysis object data storage unit 270 and scripts for the analytical process and the rendering process that are obtained from the script storage unit 260 (step S206-1).
When the user does not have a right to the analysis object data but has a right to the analysis result (Step S203/analysis object data: n and rendering object data: y), the apparatus determination unit 220 selects the “rendering process” as the take-over sub process (step S204-2). The WEB server 231 uses the analysis object data obtained from the analysis object data storage unit 270 as the input data, performs the analytical process by using the script for the analytical process obtained from the script storage unit 260, and generates a rendering object data (an analysis result) (step S205-2). The HTML generation unit 232 generates HTML data including the rendering object data generated by the WEB server 231 and the script for the rendering process that is obtained from the script storage unit 260 (step S206-2).
In a case other than the above-mentioned cases (step S203/other), the apparatus determination unit 220 selects “not applicable” as the take-over sub process (step S204-3). The WEB server 231 uses the analysis object data obtained from the script storage unit 260 as the input data, performs the analytical process and the rendering process by using the scripts for the analytical process and the rendering process that are obtained from the script storage unit 260, and generates a rendering result (graph) (step S205-3). The HTML generation unit 232 generates HTML data including the rendering result generated by the WEB server 231 (step S206-3).
The WEB server 231 transmits the processing response including the generated HTML data to the client apparatus 100 (Step S207).
For example, the apparatus determination unit 220 obtains information about rights “analysis object data: n, rendering object data: y” of the user having the user identifier “user B” from the right information 251 shown in
When the client side processing unit 130 of the client apparatus 100 receives the processing response from the server apparatus 200 (Step S103), the client side processing unit 130 determines a sub process performed by the client apparatus 100 based on the content of the processing response (Step S104).
When the processing response includes the analysis object data and the scripts for the analytical process and the rendering process (Step S104/analysis object data), the client side processing unit 130 uses the analysis object data obtained from the processing response as the input data, performs the analytical process and the rendering process by using the scripts for the analytical process and the rendering process that are obtained from the processing response, and to generates a rendering result (graph) (step S105-1).
When the processing response includes the rendering object data and the script for the rendering process (Step S104/rendering object data), the client side processing unit 130 uses the rendering object data obtained from the processing response as the input data, performs the rendering process by using the script for the rendering process obtained from the processing response, and generates a rendering result (graph) (step S105-2).
For example, the client side processing unit 130 performs the rendering process by using the rendering object data obtained from the processing response and the script for the rendering process obtained from the processing response.
The output unit 140 outputs (displays) the rendering result generated by the client side processing unit 130 or the rendering result included in the processing response received from the server apparatus 200 to the user (Step S106).
For example, the output unit 140 displays the rendering result generated by the client side processing unit 130.
With that step, the operation of the first exemplary embodiment of the present invention is completed.
Note that, in the first exemplary embodiment of the present invention, a case in which the process performed by the analysis system includes two sub processes (the analytical process and the rendering process) has been explained as an example.
However, the process performed by the analysis system is not limited to the above-mentioned process. The process may include another sub process other than the analytical process and the rendering process.
The process performed by the analysis system may be composed of one sub process. In this case, when the user has a right to input data for the process performed by the analysis system, the client apparatus 100 performs the process and otherwise the server apparatus 200 performs the process.
The process performed by the analysis system may be a series of more than two sub processes to be performed in a predetermined order.
In this case, the right information 251 indicates a right of a user to input data of each sub process of the series of the sub processes. When the user has a right to the input data for all of sub processes of the series of the sub processes, the apparatus determination unit 220 selects the first sub process among the series of the sub processes as the take-over sub process. When the user has a right to the input data for all of sub processes from the specific sub process that is a process at the second or later in the series of the sub processes, the apparatus determination unit 220 selects the specific sub process as the take-over sub process. In a case other than the above-mentioned cases, the apparatus determination unit 220 selects “not applicable” as the take-over sub process.
In the first exemplary embodiment of the present invention, although the server apparatus 200 obtains a script for each sub process to be performed by the client apparatus 100 from the script storage unit 260 and transmits it to the client apparatus 100, the client apparatus 100 may obtain the script for each sub process to be performed by the client apparatus 100 from a script storage unit (not shown) of the client apparatus 100.
The form of the input data of each sub process that is transmitted from the server apparatus 200 to the client apparatus 100 may be a form that can be used only by an allowed script. In this case, the input data may be encrypted in such a way that the input data is decrypted and used only by the allowed script.
Next, a characteristic configuration of the first exemplary embodiment of the present invention will be described.
An information processing system includes a client apparatus (a first processing apparatus) 100 and a server apparatus (a second processing apparatus) 200.
The server apparatus 200 includes an apparatus determination unit 220 and a server side processing unit (a second processing unit) 230. The apparatus determination unit 220 selects the client apparatus 100 or the server apparatus 200 as an apparatus which performs a predetermined process based on right information 251 indicating a right of a user of the client apparatus 100 to input data for the predetermined process. When the client apparatus 100 performs the predetermined process, the server side processing unit 230 transmits the input data for the predetermined process to the client apparatus 100. When the server apparatus 200 performs the predetermined process, the server side processing unit 230 performs the predetermined process by using the input data for the predetermined process and transmits a processing result of the predetermined process to the client apparatus 100.
The client apparatus 100 includes a client side processing unit (a first processing unit) 130 and an output unit 140. When the client apparatus 100 performs the predetermined process, the client side processing unit 130 performs the predetermined process by using the input data for the predetermined process that is received from the server apparatus 200. The output unit 140 outputs the processing result of the predetermined process.
Next, the effect of the first exemplary embodiment of the present invention will be described.
According to the first exemplary embodiment of the present invention, even when processing object data includes confidential information, distributed processing can be performed. This is because the apparatus determination unit 220 selects the client apparatus 100 or the server apparatus 200 as an apparatus which performs the predetermined process based on the right information 251 indicating a right of a user of the client apparatus 100 to input data for a predetermined process. As a result, even when the processing object data includes the confidential information, concentrated load on the server apparatus can be distributed to the client apparatus while maintaining security for the confidential information.
In addition, according to the first exemplary embodiment of the present invention, even when the user does not have a right to the processing object data, the distributed processing can be performed. This is because the apparatus determination unit 220 selects a take-over sub process that is the top of one or more sub processes to be performed by the client apparatus from among a series of the sub processes based on the right information 251 indicating a right of the user of the client apparatus 100 to input data for each sub process of the series of the sub processes. For example, when the analytical process is performed to the original processing object data including a plurality pieces of personal information and company information and the rendering process is performed to the analysis result, the analysis result and the rendering result are abstract data indicating the feature of the original processing object data and have higher anonymity than that of the original processing object data. In this case, even if the user does not have a right to the original processing object data (input data for the first sub process), there is a possibility that the user has a right to the input data for the subsequent sub process. Accordingly, the subsequent sub process such as the rendering process can be performed by the client apparatus.
Next, a second exemplary embodiment of the present invention will be described.
In the second exemplary embodiment of the present invention, the take-over sub process is determined by using an estimated processing time in addition to the right information 251. This is a difference between the first exemplary embodiment and the second exemplary embodiment.
First, a configuration of the second exemplary embodiment of the present invention will be described.
Referring to
The client load monitoring unit 150 collects load information such as CPU utilization or the like in the client apparatus 100. The network load monitoring unit 160 collects network load information such as a throughput or the like in communication between the client apparatus 100 and the server apparatus 200.
The server apparatus 200 according to the second exemplary embodiment of the present invention includes a server load monitoring unit 280 and a processing time calculation unit 290 in addition to the components of the server apparatus 200 of the first exemplary embodiment of the present invention. The server load monitoring unit 280 collects load information such as CPU utilization or the like in the server apparatus 200. The processing time calculation unit 290 calculates an estimated processing time to perform the series of the sub processes for each candidate for the take-over sub process based on the load information obtained from the client load monitoring unit 150 and the server load monitoring unit 280, and the network load information obtained from the network load monitoring unit 160.
Here, the processing time calculation unit 290 obtains a processing time of each sub process (the analytical process or the rendering process) of the series of the sub processes in the client apparatus 100 and the server apparatus 200, and a transfer time of each piece of transfer data (the analysis object data, the rendering object data, or the rendering result) based on the load information and the network load information. The processing time calculation unit 290 obtains the processing time of each sub process in the client apparatus 100 and the server apparatus 200, and the transfer time of each piece of transfer data by using a predetermined calculation formula or a predetermined conversion table for the load information and the network load information. The processing time calculation unit 290 may obtain the processing time of each sub process in the client apparatus 100 and the server apparatus 200, and the transfer time of each piece of transfer data by using a predetermined calculation formula or a predetermined conversion table for the size of input data of each sub process or the size of each piece of transfer data, instead of the load information and the network load information. Further, the client load monitoring unit 150, the server load monitoring unit 280, and the network load monitoring unit 160 may monitor the processing time of each sub process in the client apparatus 100 and the server apparatus 200, and the transfer time of each piece of transfer data, and the processing time calculation unit 290 may obtain the processing time and the transfer time. The processing time calculation unit 290 calculates the estimated processing time by summing the processing time and the transfer time for each candidate for the take-over sub process.
The apparatus determination unit 220 extracts the candidate for the take-over sub process from among the series of the sub processes based on the right information 251.
As shown in
The apparatus determination unit 220 obtains the estimated processing time for each candidate for the take-over sub process from the processing time calculation unit 290 and selects the candidate with the shortest estimated processing time as the take-over sub process.
Next, operation of the second exemplary embodiment of the present invention will be described.
Here, it is assumed that the right information storage unit 250 stores the right information 251 shown in
The operations from receiving the analysis request from the user in the client apparatus 100 until performing the user authentication in the server apparatus 200 (Steps S101, S102, S301, S302) are the same as the operations of the first exemplary embodiment of the present invention (Steps S101, S102 shown in
When the user is a qualified user, the apparatus determination unit 220 obtains information about a right of the user to input data of each sub process (the analytical process and the rendering process) from the right information 251. The apparatus determination unit 220 extracts candidates for the take-over sub process, using the obtained information about a right, according to
For example, the apparatus determination unit 220 obtains information to about rights “analysis object data: y, rendering object data: y” of the user having the user identifier “user A” from the right information 251 shown in
The apparatus determination unit 220 obtains an estimated processing time for each candidate from the processing time calculation unit 290 and selects the candidate with the shortest estimated processing time as the take-over sub process (steps S304-1 and S304-2).
For example, with respect to the candidate “analytical process” for the take-over sub process, the processing time calculation unit 290 calculates the estimated processing time by summing the processing time of the analytical process and the processing time of the rendering process in the client apparatus 100 and the transfer time of the analysis object data. Further, with respect to the candidate “rendering process” for the take-over sub process, the processing time calculation unit 290 calculates the estimated processing time by summing the processing time of the analytical process in the server apparatus 200, the processing time of the rendering process in the client apparatus 100, and the transfer time of the rendering object data. With respect to the candidate “not applicable” for the take-over sub process, the processing time calculation unit 290 calculates the estimated processing time by summing the processing time of the analytical process in the server apparatus 200, the processing time of the rendering process in the server apparatus 200, and the transfer time of the rendering result. In
After this selection, according to the selected take-over sub process, the WEB server 231 performs one or more sub processes before the take-over sub process and the client side processing unit 130 performs one or more sub processes from the take-over sub process. The operations until outputting the rendering result by the output unit 140 (Steps S305 to S307, and Steps S103 to S106) are the same as the operations of the first exemplary embodiment of the present invention (Steps S205 to S207 shown in
Next, the effect of the second exemplary embodiment of the present invention will be described.
According to the second exemplary embodiment of the present invention, the distributed processing can be performed at a high speed compared with the first exemplary embodiment of the present invention. This is because the apparatus determination unit 220 selects the take-over sub process by using an estimated processing time in addition to the right information 251.
An exemplary advantage according to the present invention is that the distributed processing can be performed even when processing object data includes confidential information.
While the invention has been particularly shown and described with reference to exemplary embodiments thereof, the invention is not limited to these embodiments. It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2013-196634 | Sep 2013 | JP | national |
| Number | Name | Date | Kind |
|---|---|---|---|
| 6035417 | Kanazawa | Mar 2000 | A |
| 8522068 | Akirav | Aug 2013 | B2 |
| 20090013027 | Tanaka | Jan 2009 | A1 |
| 20090240898 | Abe | Sep 2009 | A1 |
| 20110022828 | Delaney | Jan 2011 | A1 |
| 20110213934 | Greenhalgh | Sep 2011 | A1 |
| 20130067201 | Takeuchi | Mar 2013 | A1 |
| 20130204931 | Sakurai | Aug 2013 | A1 |
| Number | Date | Country |
|---|---|---|
| 2000-267964 | Sep 2000 | JP |
| Number | Date | Country | |
|---|---|---|---|
| 20150088976 A1 | Mar 2015 | US |
