Patent application number | Description | Published |
20090021804 | IMAGE PROCESSING APPARATUS AND CONTROL METHOD THEREOF - An image processing apparatus includes an image reading unit to read a plurality of different images from a single image at various focal distances, and an image processing unit to extract clear pixels from the read images to synthesize the extracted pixels. According to the apparatus and a method thereof, an image is scanned several times at various focal distances to extract pixels having a clear picture quality in each corresponding pixel or block, and a synthesized image including only the extracted pixels is generated, so that the construction of the image processing apparatus can be simplified and the manufacturing cost thereof can be minimized while a clear image is being obtained. | 01-22-2009 |
20110058214 | Image forming apparatus and low power driving method thereof - An image forming apparatus having a USB communication function includes a control interface unit to perform USB control communication, a data interface unit to perform USB data communication, and a control unit to perform an event in a low power mode according to a signal input through the control interface unit, and to perform an event in a normal mode according to a signal input through the control interface unit and the data interface unit. Therefore, the low power mode may be effectively implemented. | 03-10-2011 |
20110060925 | IMAGE FORMING SYSTEM AND LOW POWER MODE CONTROL METHOD THEREOF - An image forming system to support a web service function includes a first web server operated under a low power mode to provide a web service, a webpage provider to provide a webpage as a web service through the first web server, and a controller to control the first web server to provide a web service when a web service request command is received in the low power mode. Therefore, it is possible to effectively operate the image forming system under the low power mode. | 03-10-2011 |
20110060929 | IMAGE FORMING APPARATUS, SYSTEM ON CHIP UNIT AND DRIVING METHOD THEREOF - An image forming apparatus which is connected to a host apparatus, the image forming apparatus including a first memory, a second memory, a universal serial bus (USB) interface to receive a USB control signal or a USB data signal from the host apparatus, and a central processing unit (CPU) operating in a normal mode using the first memory or a power saving mode using the second memory. If the USB data signal is input in the power saving mode, the CPU activates the first memory and converts the power saving mode into the normal mode, and, if the USB control signal is input in the power saving mode, the CPU retains the power saving mode and performs an operation corresponding to the USB control signal using the second memory. Accordingly, the power saving mode is realized effectively. | 03-10-2011 |
20120284550 | IMAGE FORMING APPARATUS AND METHOD FOR CONTROLLING THE SAME - An image forming apparatus includes first and second memories, and a main controller and a sub-controller. The main controller performs a control operation using the first memory in a normal mode state, the sub-controller is mounted on an engine unit provided in the image forming apparatus to perform an image forming job by driving the engine unit in a normal mode state under the control of the main controller, the main controller transmits a low-power mode change request to the sub-controller if a condition for changing a mode state from the normal mode state to a low-power mode state is satisfied, and the sub-controller copies a low-power service program stored in the first memory into the second memory if the low-power mode change request is received, and performs a low-power service by executing the low-power service program through accessing of the second memory. | 11-08-2012 |
20130042129 | IMAGE FORMING APPARATUS, MICROCONTROLLER, AND METHODS FOR CONTROLLING IMAGE FORMING APPARATUS AND MICROCONTROLLER - An image forming apparatus, a microcontroller, and methods for controlling the image forming apparatus and the microcontroller are provided. The microcontroller include: a memory controller which is connected to an external memory operating in a self-refresh mode if a normal mode changes to a low power mode and outputs a preset signal which is to cancel the self-refresh mode if the low power mode changes to the normal mode; a memory interface unit which transmits the preset signal to a main memory; and a signal detector which detects whether the preset signal has been output. Here, the memory controller powers off the memory interface unit if the normal mode changes to the low power mode and powers on the memory interface unit if the low power mode changes to the normal mode, and the output of the preset signal is detected by the signal detector. | 02-14-2013 |
20130042132 | IMAGE FORMING APPRATUS, MICROCONTROLLER, AND METHODS FOR CONTROLLING IMAGE FORMING APPARATUS AND MICROCONTROLLER - An image forming apparatus, a microcontroller, and methods for controlling the image forming apparatus and the microcontroller are provided. The microcontroller include: a memory controller which is connected to an external memory operating in a self-refresh mode if a normal mode changes to a low power mode, performs a control operation by using the external memory in the normal mode, and outputs a preset signal which is to cancel the self-refresh mode if the low power mode changes to the normal mode; a memory interface unit which transmits the preset signal to a main memory; and a signal detector which detects whether the preset signal has been output. Here, the memory controller powers off the memory interface unit if the normal mode changes to the low power mode and powers on the memory interface unit if the low power mode changes to the normal mode, and the output of the preset signal is detected by the signal detector. | 02-14-2013 |
20140198331 | IMAGE FORMING APPARATUS, METHOD OF CONNECTING WITH EXTERNAL DEVICE THEREOF, AND COMPUTER-READABLE RECORDING MEDIUM - An image forming apparatus that includes a first storage where a first program to communicate with an external interface is stored when the image forming apparatus is in a normal mode, a second storage where a second program which is smaller than the first program in size is stored in order to perform communication with a pre-defined external device through the external interface when the image forming apparatus is in a power saving mode, and a controller which performs communication with the external interface using the first program stored in the first storage or the second program stored in the second storage according to an operation mode of the image forming apparatus. | 07-17-2014 |