US-20260129134-A1 - ELECTRONIC APPARATUS

US20260129134A1US 20260129134 A1US20260129134 A1US 20260129134A1US-20260129134-A1

Abstract

An electronic apparatus includes a storage device that includes a non-volatile memory, and a controller. The controller is configured to be able to set a power supply mode of the electronic apparatus as a sleep mode that maintains power supply to the storage device. Further, when the controller changes the power supply mode to the sleep mode, the controller transmits a shutdown notification command to the storage device and thereby stops a confirmation operation of a data status of the storage device.

Inventors

Shinji Tomofuji

Assignees

KYOCERA DOCUMENT SOLUTIONS INC.

Dates

Publication Date: 20260507
Application Date: 20251104
Priority Date: 20241107

Claims (8)

1 . An electronic apparatus, comprising: a storage device that includes a non-volatile memory; and a controller configured to be able to set a power supply mode of the electronic apparatus as a sleep mode that maintains power supply to the storage device; wherein when the controller changes the power supply mode to the sleep mode, the controller transmits a shutdown notification command to the storage device and thereby stops a confirmation operation of a data status of the storage device.
2 . The electronic apparatus according to claim 1 , wherein when the controller changes the power supply mode to the sleep mode, if a type of the storage device is a specific type, then the controller does not transmit the shutdown notification command to the storage device; and the specific type is a type of a storage device that performs a write operation to a specific memory area when receiving the shutdown notification command.
3 . The electronic apparatus according to claim 2 , wherein the type of the storage device is either a model number of the storage device or a firmware version of the storage device.
4 . The electronic apparatus according to claim 1 , wherein when the power supply mode of the electronic apparatus is the sleep mode, the controller selects one of a first sleep mode that cuts off power supply to the storage device and a second sleep mode that maintains power supply to the storage device; the sleep mode is the first or second sleep mode that can be selected by a user; and if a frequency that accesses to the storage device occur in the first sleep mode exceeds a predetermined threshold value, the controller presents to the user a message that prompts to change the first sleep mode to the second sleep mode.
5 . The electronic apparatus according to claim 1 , wherein when the power supply mode of the electronic apparatus is the sleep mode, the controller selects one of a first sleep mode that cuts off power supply to the storage device and a second sleep mode that maintains power supply to the storage device; the sleep mode is the first or second sleep mode that can be selected by a user; and if a frequency that accesses to the storage device occur in the second sleep mode becomes less than a predetermined threshold value, the controller presents to the user a message that prompts to change the second sleep mode to the first sleep mode.
6 . The electronic apparatus according to claim 1 , wherein when the power supply mode of the electronic apparatus is the sleep mode, the controller selects one of a first sleep mode that cuts off power supply to the storage device and a second sleep mode that maintains power supply to the storage device; and if a frequency that accesses to the storage device occur in the first sleep mode exceeds a predetermined threshold value, the controller automatically changes the power supply mode of the electronic apparatus from the first sleep mode to the second sleep mode.
7 . The electronic apparatus according to claim 1 , wherein when the power supply mode of the electronic apparatus is the sleep mode, the controller selects one of a first sleep mode that cuts off power supply to the storage device and a second sleep mode that maintains power supply to the storage device; and if a frequency that accesses to the storage device occur in the second sleep mode becomes less than a predetermined threshold value, the controller automatically changes the power supply mode of the electronic apparatus from the second sleep mode to the first sleep mode.
8 . The electronic apparatus according to claim 1 , wherein the non-volatile memory is a NAND flash memory; and the shutdown notification command is a StandbyImmediate command.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application relates to and claims priority rights from Japanese Patent Application No. 2024-194861, filed on Nov. 7, 2024, the entire disclosures of which are hereby incorporated by reference herein. BACKGROUND 1. Field of the Present Disclosure The present disclosure relates to an electronic apparatus. 2. Description of the Related Art When a main body of an information device moves to a power saving mode, the information device counts the number of times of the movement to the power saving mode; and if the number of the movement times is less than a predetermined number of times, the information device does not cause a storage device (hard disk drive) to move to the power saving mode, and when the number of the movement times reaches the predetermined number of times, the information device causes the storage device (hard disk drive) to move to the power saving mode. Recently, a storage device such as SSD (Solid State Drive) that uses a rewritable non-volatile memory is sometimes used. In such a storage device, in a period that there are no accesses from an external device, its internal controller performs an operation to confirm a data status of the non-volatile memory. However, if accesses to the non-volatile memory are frequently performed to confirm a data status as mentioned, trouble such as read disturb may occur. Therefore, if power supply to the storage device is maintained in a sleep mode (i.e. power saving mode), a status that there are no accesses to the storage device from an external device continues and therefore such trouble may occur in the sleep mode. SUMMARY An electronic apparatus according to an aspect of the present disclosure includes a storage device that includes a non-volatile memory, and a controller. The controller is configured to be able to set a power supply mode of the electronic apparatus as a sleep mode that maintains power supply to the storage device. Further, when the controller changes the power supply mode to the sleep mode, the controller transmits a shutdown notification command to the storage device and thereby stops a confirmation operation of a data status of the storage device. These and other objects, features and advantages of the present disclosure will become more apparent upon reading of the following detailed description along with the accompanied drawings. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a block diagram that indicates an example of an electronic apparatus according to an embodiment of the present disclosure; and FIG. 2 shows a flowchart that explains a behavior of the electronic apparatus 1 shown in FIG. 1. DETAILED DESCRIPTION Hereinafter, an embodiment according to an aspect of the present disclosure will be explained with reference to drawings. FIG. 1 shows a block diagram that indicates an example of an electronic apparatus according to an embodiment of the present disclosure. The electronic apparatus 1 shown in FIG. 1 is an image forming apparatus such as printer, multi function peripheral. As shown in FIG. 1. the electronic apparatus 1 includes a controller 21, an internal device 22 such as printing device, an operation panel 23, a communication device 24, a storage device 25, and a power supply device 26. The controller 21 includes a computer, an ASIC (Application Specific Integrated Circuit) and/or the like and thereby embodies sorts of processing units with software and/or hardware, controls the internal device 22, the operation panel 23 and the like and performs sorts of data processes, and reads and writes data required for the data process, data of a user or the like from/to the storage device 25. The controller 21 changes a power supply mode of this electronic apparatus from one to the other among a normal mode and a sleep mode (power saving mode) of which electric power consumption is lower than that of the normal mode. The operation panel 23 includes an input device 31 such as touch panel and/or head key that receives a user operation, and a display device 32 such as a liquid crystal display that displays an operation screen to a user. The communication device 24 is a wired or wireless network interface or the like and performs data communication with a host apparatus 3 or the like through a network 2. The storage device 25 includes a non-volatile memory and a controller (internal controller) for the non-volatile memory, and the internal controller communicates with the controller 21 and performs data read and data write from/to the non-volatile memory. In this embodiment, the storage device is an SSD, and the aforementioned non-volatile memory is a NAND flash memory. The power supply device 26 supplies electric power from a commercial power supply to each internal part, and individually turns on and off power supply to the storage device 25 correspondingly to a power supply mode. Using the power supply device 26, the controller 21 can set the power supply mode of the electronic ap