COMMUNICATION APPARATUS, COMMUNICATION SYSTEM, COMMUNICATION METHOD, AND RECORDING MEDIUM

• US 20150133106A1
• Filed: 10/28/2014
• Published: 05/14/2015
• Est. Priority Date: 11/12/2013
• Status: Abandoned Application

• Current Assignee: Ricoh Company Limited
• Original Assignee: Shigeru Nakamura
• Inventors: NAKAMURA, Shigeru
• Application Number:
  US14/525,338
• Publication Number:
  US 20150133106A1
• Time in Patent Office: Days
• US Class Current: 455/419
• CPC Class Codes: G06F 8/65 Updates security arrangements therefor G06F21/57
• CPC Class Codes: H04L 67/34 involving the movement of software or configuration parameters network booting or remote initial program loading [RIPL] G06F9/4416
• CPC Class Codes: H04L 67/561 Adding application-functional data or data for application control, e.g. adding metadata
• CPC Class Codes: H04W 8/245 from a network towards a terminal

Abstract

Disclosed is a communication apparatus operable to perform communications via a data transmission path. The communication apparatus includes a receiver configured to receive meta-information having statements associated with an update, a determination part configured to determine whether update data are changed based on the meta-information received by the receiver when the update data have already been downloaded, an acquisition part configured to download, when the determination part determines that the update data are changed, the changed update data, and an update processor configured to execute the update based on the changed update data downloaded by the acquisition part.

Claims

1. A communication apparatus operable to perform communications via a data transmission path, the communication apparatus comprising:

a receiver configured to receive meta-information having statements associated with an update;

a determination part configured to determine whether update data are changed based on the meta-information received by the receiver when the update data have already been downloaded;

an acquisition part configured to download, when the determination part determines that the update data are changed, the changed update data; and

an update processor configured to execute the update based on the changed update data downloaded by the acquisition part.

2. The communication apparatus as claimed in claim 1, wherein

the meta-information includes file identification information used to determine whether the update data are changed.

3. The communication apparatus as claimed in claim 2, further comprising:

a generator configured to generate the file identification information from the update data, wherein

the determination part determines whether the update data are changed by comparing the file identification information generated by the generator with the file identification information included in the meta-information received by the receiver.

4. A communication system comprising:

an update information providing apparatus; and

a communication apparatus, the update information providing apparatus and the communication apparatus being in communication with each other via a data transmission channel, wherein the update information providing apparatus includes

a transmitter configured to transmit or receive update information with respect to the communication apparatus, and

an update data providing part configured to provide the communication apparatus with update data in response to a request from the communication apparatus, and wherein the communication apparatus includes

a receiver configured to receive meta-information having descriptions associated with an update,

a determination part configured to determine whether update data are changed based on the meta-information received by the receiver when the update data have already been downloaded,

an acquisition part configured to download, when the determination part determines that the update data are changed, the changed update data, and

an update processor configured to execute the update based on the change update data downloaded by the acquisition part.

5. A communication method performed by a communication apparatus capable of performing communications via a data transmission channel, the communication method comprising:

receiving meta-information having statements associated with an update;

determining whether update data are changed based on the received meta-information when the update data have already been downloaded;

downloading, when it is determined that the update data are changed, the changed update data; and

executing the update based on the downloaded changed update data.

6. A non-transitory computer readable recording medium having a communication program executed by a computer, the computer being included in a communication apparatus capable of performing communications via a data transmission channel, wherein when executed by the computer, the communication program performs a process comprising:

receiving meta information having statements associated with an update;

determining whether update data are changed based on the received meta-information when the update data have already been downloaded;

downloading, when it is determined that the update data are changed, the changed update data; and

executing the update based on the downloaded changed update data.