APPARATUS, SYSTEM AND METHOD FOR CACHE MANAGEMENT

• US 20170318115A1
• Filed: 04/26/2017
• Published: 11/02/2017
• Est. Priority Date: 04/29/2016
• Status: Active Grant

• Current Assignee: Canon Information and Imaging Solutions, Inc. (Canon Inc.), Canon USA, Inc. (Canon Inc.)
• Original Assignee: Canon Information and Imaging Solutions, Inc. (Canon Inc.), Canon USA, Inc. (Canon Inc.)
• Inventors: Peng, Jiayin, Doran, Daniel, Nakashima, Kosuke
• Granted Patent: US 10,637,953 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 67/02 based on web technology, e.g. hypertext transfer protocol [HTTP]
• CPC Class Codes: H04L 67/10 in which an application is distributed across nodes in the network software deployment G06F8/60; multiprogramming arrangements G06F9/46
• CPC Class Codes: H04L 67/568 Storing data temporarily at an intermediate stage, e.g. caching
• CPC Class Codes: H04L 67/60 Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources admission control or resource allocation H04L47/70
• CPC Class Codes: H04N 1/00244 with a server, e.g. an internet server fax-servers or the like for store and forward H04N1/324
• CPC Class Codes: H04N 1/00464 using browsers, i.e. interfaces based on mark-up languages
• CPC Class Codes: H04N 1/00973 from a remote device, e.g. receiving via the internet instructions input to a computer terminal
• CPC Class Codes: H04N 1/2166 for mass storage, e.g. in document filing systems information retrieval G06F16/00
• CPC Class Codes: H04N 2201/0094 Multifunctional device, i.e. a device capable of all of reading, reproducing, copying, facsimile transception, file transception
• CPC Class Codes: H04W 4/00 Services specially adapted for wireless communication networks; Facilities therefor

Abstract

A server that receives, from an image processing device, a request indicating a data file stored on a file server and a predetermined type of processing to be performed on the data file. It is determined whether memory stores information associated with a current session between the image processing device and the server. Based on determining that the information is not stored, initiating a download of the data file, generating a modified version of the downloaded data file and storing the information associated with the current session in the memory. The modified version is provided to the image processing device if the predetermined type of processing is a first type of processing and the downloaded file to the image processing device if the predetermined processing is a second type of processing.

Claims

1. A server comprising:

a memory storing instructions; and

at least one processor that executes the instructions stored in the memory to to control the at least one processor to perform operations comprising

receiving, from an image processing device, a request indicating a data file stored on a file server and a predetermined type of processing to be performed on the data file;

determining whether the memory stores information associated with a current session between the image processing device and the server, the information identifying a location in the memory where the data file is stored and a location in the memory where a modified version of the data file is stored;

based on determining that the information is not stored in the memory,

initiating a download of the data file from the file server,

generating a modified version of the downloaded data file and

providing the modified version to the image processing device if the predetermined type of processing is a first type of processing and providing the downloaded file to the image processing device if the predetermined processing is a second type of processing,

causing the memory to store the information associated with the current session; and

based on determining that the memory stores the information, providing the modified version to the image processing device if the predetermined type of processing is the first type of processing and providing the downloaded file to the image processing device if the predetermined processing is the second type of processing.

2. The server according to claim 1, wherein execution of the instructions further comprises

deleting at least one of the data file and the modified version of the data file during the session between the image processing device in response to (a) receiving a further request from the image processing device for a further data file and (b) upon completion of the predetermined processing.

3. The server according to claim 1, wherein

the first type of processing is a print preview process and the modified version of the data file is a thumbnail including an amount of data less than the full version of the requested data file, and

the second type of processing is print processing that provides a full version of the downloaded data file to the image processing device for output thereof.

4. The server according to claim 1, wherein

in response to completion of the first type of processing, a request for the second type of processing is selectively completed during a same session without re-downloading the requested file from the file server.

5. The server according to claim 1, wherein

the file server is external from the server and includes a resource providing application that provides one or more requested files to the server in response to the request received from the image processing device based on user credentials received from the image processing device.

6. The server according to claim 1, wherein execution of the instructions further comprises

managing requests for multiples data files received from the image processing device using session configuration information identifying a maximum allowance value for each session, the maximum allowance value representing a maximum number of files per session and a maximum size per file.

7. The server according to claim 6, wherein the maximum allowance values is dynamically determined based on the maximum number of simultaneous requests permitted by the server and a size of the memory allocated to storing data files.

8. The server according to claim 1, wherein execution of the instructions further comprises

managing requests for multiples data files received from the image processing device by tracking a list of data files associated with the session and,

in a case where the available memory is less than a size of the requested file, deleting one or more files based on an earliest request time until the available memory is larger than a size of the requested file, and

in a case where the available memory is greater than a size of the requested file, maintaining, in memory, all previously requested files and downloading the requested file.

9. A method executed by a server in communication with an image processing device and a file server, the method comprising:

receiving, from an image processing device, a request indicating a data file stored on a file server and a predetermined type of processing to be performed on the data file;

determining whether the memory stores information associated with a current session between the image processing device and the server, the information identifying a location in the memory where the data file is stored and a location in the memory where a modified version of the data file is stored;

based on determining that the information is not stored in the memory,

initiating a download of the data file from the file server,

generating a modified version of the downloaded data file and

providing the modified version to the image processing device if the predetermined type of processing is a first type of processing and providing the downloaded file to the image processing device if the predetermined processing is a second type of processing,

causing the memory to store the information associated with the current session; and

based on determining that the memory stores the information, providing the modified version to the image processing device if the predetermined type of processing is the first type of processing and providing the downloaded file to the image processing device if the predetermined processing is the second type of processing.

10. The method according to claim 9, further comprising

deleting at least one of the data file and the modified version of the data file during the session between the image processing device in response to (a) receiving a further request from the image processing device for a further data file and (b) upon completion of the predetermined processing.

11. The method according to claim 9, wherein

the first type of processing is a print preview process and the modified version of the data file is a thumbnail including an amount of data less than the full version of the requested data file, and

the second type of processing is print processing that provides a full version of the downloaded data file to the image processing device for output thereof.

12. The method according to claim 9, further comprising

in response to completion of the first type of processing, completing a request for the second type of processing during a same session without re-downloading the requested file from the file server.

13. The method according to claim 9, wherein

the file server is external from the server and includes a resource providing application that provides one or more requested files to the server in response to the request received from the image processing device based on user credentials received from the image processing device.

14. The method according to claim 9, further comprising

managing requests for multiples data files received from the image processing device using session configuration information identifying a maximum allowance value for each session, the maximum allowance value representing a maximum number of files per session and a maximum size per file.

15. The method according to claim 14, wherein the maximum allowance values is dynamically determined based on the maximum number of simultaneous requests permitted by the server and a size of the memory allocated to storing data files.

16. The method according to claim 9, further comprising

managing requests for multiples data files received from the image processing device by tracking a list of data files associated with the session and,

in a case where the available memory is less than a size of the requested file, deleting one or more files based on an earliest request time until the available memory is larger than a size of the requested file, and

in a case where the available memory is greater than a size of the requested file, maintaining, in memory, all previously requested files and downloading the requested file.

17. A non-transitory computer readable storage medium storing instructions that, when executed by at least one processor, controls a server in communication with an image processing device and a file server to perform operations comprising:

receiving, from an image processing device, a request indicating a data file stored on a file server and a predetermined type of processing to be performed on the data file;

determining whether the memory stores information associated with a current session between the image processing device and the server, the information identifying a location in the memory where the data file is stored and a location in the memory where a modified version of the data file is stored;

based on determining that the information is not stored in the memory,

initiating a download of the data file from the file server,

generating a modified version of the downloaded data file and

providing the modified version to the image processing device if the predetermined type of processing is a first type of processing and providing the downloaded file to the image processing device if the predetermined processing is a second type of processing,

causing the memory to store the information associated with the current session; and

based on determining that the memory stores the information, providing the modified version to the image processing device if the predetermined type of processing is the first type of processing and providing the downloaded file to the image processing device if the predetermined processing is the second type of processing.