News Column

Patent Issued for Image Forming Apparatus and Methods to Avoid Read Disturb Errors by Prohibiting a Deep Sleep State of the Image Apparatus until a...

August 12, 2014



Patent Issued for Image Forming Apparatus and Methods to Avoid Read Disturb Errors by Prohibiting a Deep Sleep State of the Image Apparatus until a Recovery Process Has Implemented When a Read Count o

By a News Reporter-Staff News Editor at Information Technology Newsweekly -- KYOCERA Document Solutions Inc. (JP) has been issued patent number 8793521, according to news reporting originating out of Alexandria, Virginia, by VerticalNews editors.

The patent's inventor is Okuda, Masaya (Osaka, JP).

This patent was filed on May 24, 2011 and was published online on July 29, 2014.

From the background information supplied by the inventors, news correspondents obtained the following quote: "The present invention relates to an image forming apparatus and an image forming method having a power saving mode.

"Some typical image forming apparatuses, such as printers, copiers, and multifunction peripherals (MFP), have a power saving mode (sleep status mode).

"The typical image forming apparatus decreases the reception speed of data upon receiving the data in the sleep status mode, and then starts a reception process of the data with the start of an initialization process for returning to a normal status mode. The typical image forming apparatus returns the reception speed to the original speed when the initialization process is completed.

"The typical image forming apparatus returns to the normal status mode after moving to the sleep status mode since the initialization process is performed each time the data is received while in the sleep status mode. Therefore, this results in low power saving.

"Another image forming apparatus includes an energy saving subsystem having a power consumption that is smaller than that of a main system. To move to the sleep status mode, this other image forming apparatus supplies power to the energy saving subsystem and stops supply of the power to the main system and subsystems (including a print engine, a scanner, and a display panel that are controlled by the main system). The energy saving subsystem in this other image forming apparatus controls the supply of the power to the main system and the subsystems. This other image forming apparatus is better able to suppress power consumption because the power is supplied only to the energy saving subsystem while in the sleep status mode.

"However, the energy saving subsystem in this other image forming apparatus supplies power to start the main system upon receiving the data from a host apparatus if this other image forming apparatus is in the sleep status mode. The main system processes the data received from the host apparatus regardless of the kind of the data.

"Accordingly, the speed to process the data in the sleep status mode in this other image forming apparatus is much lower than the speed to process the data in the normal status mode by an amount of the time period during which the main system is started.

"Meanwhile, the typical image forming apparatus includes a processor and is operated by controlling a program. Specifically, the image forming apparatus includes a non-volatile memory, such as a NAND flash memory, and reads out a controller program stored in the non-volatile memory to execute the read out controller program using the processor.

"In the typical image forming apparatus, the controller program is read out from the NAND flash memory to be executed after returning from the sleep status mode in which the processor in the controller is turned off.

"Accordingly, if switching between the sleep state mode and the normal status mode frequently occurs, a read disturb error may possibly occur in the controller program."

Supplementing the background information on this patent, VerticalNews reporters also obtained the inventor's summary information for this patent: "The present disclosure relates to an image forming apparatus and an image forming method that may have a higher degree of power saving and that may avoid read disturb errors even when frequently switching between a sleep status mode and a normal status mode.

"An image forming apparatus according to one aspect of the present disclosure includes: a communication interface configured to receive data; a buffer configured to store the data received by the communication interface; a main system configured to process the data stored in the buffer; a subsystem configured to be controlled by the main system to perform a function of the image forming apparatus; a system control unit; and a data processing unit. The system control unit is configured to switch an operation status mode of the image forming apparatus between a normal status mode in which the main system and the subsystem are turned on and a deep sleep status mode in which the main system and the subsystem are turned off. The data processing unit is configured to, when the operation status mode is the deep sleep status mode, process the data received from the buffer if the data is determined to be processable by the data processing unit, and cause the system control unit to switch the operation status mode from the deep sleep status mode to the normal status mode if the data received from the buffer is determined not to be processable by the data processing unit.

"An image forming method according to one aspect of the present disclosure includes: via a communication interface, receiving data; via a buffer, storing the data received by the communication interface; via a main system, processing the data stored in the buffer; via a subsystem, being controlled by the main system to perform a function of an image forming apparatus; via a system control unit, switching an operation status mode of the image forming apparatus between a normal status mode in which the main system and the subsystem are turned on and a deep sleep status mode in which the main system and the subsystem are turned off; and via a data processing unit, when the operation status mode is the deep sleep status, processing data received from the buffer if the data is determined to be processable by the data processing unit, and causing the system control unit to switch the operation status mode from the deep sleep status mode to the normal status mode if the data received from the buffer is determined not to be processable by the data processing unit.

"Additional features and advantages are described herein, and will be apparent from the following Detailed Description and the figures."

For the URL and additional information on this patent, see: Okuda, Masaya. Image Forming Apparatus and Methods to Avoid Read Disturb Errors by Prohibiting a Deep Sleep State of the Image Apparatus until a Recovery Process Has Implemented When a Read Count of a Program in a N. U.S. Patent Number 8793521, filed May 24, 2011, and published online on July 29, 2014. Patent URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=8793521.PN.&OS=PN/8793521RS=PN/8793521

Keywords for this news article include: Information Technology, KYOCERA Document Solutions Inc, Information and Data Processing.

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


For more stories covering the world of technology, please see HispanicBusiness' Tech Channel



Source: Information Technology Newsweekly


Story Tools






HispanicBusiness.com Facebook Linkedin Twitter RSS Feed Email Alerts & Newsletters