Patent application number | Description | Published |
20090133127 | DATA COMMUNICATION APPARATUS, METHOD OF CONTROLLING THE SAME, PROGRAM, AND STORAGE MEDIUM - A data communication apparatus that permits the use of a communication function in an appropriate manner even before a license for the communication function is made valid. A CPU of a printing apparatus as the data communication apparatus determines whether or not a trial transmission license is valid. If it is determined that the license is not valid, the CPU performs inhibits execution of processing associated with the transmission function, and restricts processing to be performed on data received using the reception function without inhibiting execution of processing associated with the reception function. | 05-21-2009 |
20100195145 | IMAGE PROCESSING APPARATUS, CONTROL METHOD FOR IMAGE PROCESSING APPARATUS, AND STORAGE MEDIUM STORING CONTROL PROGRAM THEREFOR - An image processing apparatus that is capable of reducing a burden on a user when performing an input operation of a unique setting value to an image processing apparatus that is newly added to a system. An acquisition unit acquires a unique setting value from at least one selected from the other image processing apparatuses via the network, the unique setting value being unique to the selected image processing apparatus among setting values set to the selected image processing apparatus concerned. A display unit displays a setting screen that includes a reference area for displaying the unique setting value acquired by the acquisition unit as a reference value, and an input area for inputting the unique setting value that is set up to the image processing apparatus itself. | 08-05-2010 |
20120195296 | WIRELESS COMMUNICATION APPARATUS - According to embodiments, a wireless communication apparatus supports at least a second wireless communication scheme between a first, wireless communication scheme and the second wireless communication scheme. The first wireless communication scheme requires that a wireless medium is determined to be busy when a reception level is equal to or greater than a minimum reception sensitivity level of physical scheme. The apparatus includes a first processing unit and a second processing unit. The first processing unit is configured to set a value lower than a maximum transmission power of the first wireless communication scheme, for a maximum transmission power of the second wireless communication scheme and set a value greater than the minimum reception sensitivity level, of the physical scheme, for a carrier sense level, when the second wireless communication scheme is used. The second processing unit is configured to carry out carrier sense using the carrier sense level. | 08-02-2012 |
20120201177 | WIRELESS COMMUNICATION TERMINAL - According to one embodiment, a wireless communication terminal including a receiver, a first processor, a first storage, a second storage, a second processor, and a transmitter is provided. The receiver receives one physical packet that includes at least one frame body field, a first field including information on a length of the frame body field, a second field used to detect an error of the frame body field, and a sequence number field including a sequence number corresponding to the frame body field. The second storage retains a successively and successfully received maximum sequence number on the basis of a result of the first processor. The transmitter transmits a response frame indicating the successively and successfully received maximum sequence number when the first processor extracts at least one correct frame body. | 08-09-2012 |
20120218938 | WIRELESS COMMUNICATION APPARATUS AND METHOD - According to one embodiment, a wireless communication apparatus includes a receiving unit, a transmitting unit and a control unit. The receiving unit is configured to receive a first connection request frame indicating a connection request from another apparatus. The transmitting unit is configured to transmit a connection acceptance frame indicating a response to the first connection request frame. The control unit is configured to control the transmitting unit to retransmit the connection acceptance frame until a first acknowledgement frame addressed to the apparatus as a response to the connection acceptance frame is received from the another apparatus, and control the transmitting unit to stop from transmitting the connection acceptance frame if a second acknowledgement frame addressed to the another apparatus as a destination is received or if a second connection request frame addressed to the another apparatus is received. | 08-30-2012 |
20120220228 | WIRELESS COMMUNICATION APPARATUS - According to one embodiment, there is provided a wireless communication apparatus for making wireless connection in the first connection attempt state wherein a connection request is attempted using a predetermined frequency channel or the second connection attempt state wherein a connection request is attempted using a plurality of frequency channels. A frame generation unit generates a connection request frame which includes the first field for requesting a search of the plurality of frequency channels in response to occurrence of interference, and the second field indicating whether a corresponding frequency channel is a channel wherein occurrence of interference has been detected. A transmission unit transmits the connection request frame using the predetermined frequency channel in the first connection attempt state, and transmits the connection request frame using the plurality of frequency channels in the second connection attempt state. | 08-30-2012 |
20130155955 | WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD - There is provided a wireless communication apparatus performing access control which starts transmission after a backoff time passes since an available state of a channel is detected through carrier sense, the backoff time being set based on a random value selected within a contention window width, including: a remaining time calculating unit calculating a remaining time untill a request delay time time-outs after data is generated and a setting unit setting the contention window width according to the remaining time calculated by the remaining time calculating unit. | 06-20-2013 |
20130223250 | WIRELESS COMMUNICATION APPARATUS AND INTERFERENCE DETECTION METHOD - According to one embodiment, a wireless communication apparatus is provided with first and second determination units. The first unit determines based on a first carrier sense threshold whether busy state or not and specifies a first time when busy state is determined with the first threshold, and determines based on a second carrier sense threshold smaller than the first threshold whether busy state or not and specifies a second time when busy state is determined. The second unit determines, if at least busy state is determined based on the second threshold and the second time precedes a reference time equal to or earlier than the first time, to perform processing for avoiding interference. | 08-29-2013 |
20130230040 | WIRELESS COMMUNICATION APPARATUS AND METHOD - According to one embodiment, a wireless communication apparatus includes a first processor, a second processor and a controller. The first processor generates one or more first frames and one or more second frames. The second processor transmits the first frames and the second frames, and receives a first acknowledgement and a second acknowledgement. The controller retains a first interval relating to a time interval between the first transmission request and the second transmission request and a second interval relating to a time interval between a first and a second time points, and controls transmission of frames to be transmitted based on the first and the second intervals. | 09-05-2013 |
20140062657 | WIRELESS COMMUNICATION APPARATUS, AUTHENTICATION APPARATUS, WIRELESS COMMUNICATION METHOD AND AUTHENTICATION METHOD - According to one embodiment, when a control unit is notified of information in at least one second signal received by one of first and second wireless communication units after the control unit provides the second wireless communication unit with a command to transmit a first signal containing first address information and before a waiting time elapses and when the at least one second signal contains second address information assigned to an authentication apparatus having received the first signal, then the control unit provides the first wireless communication unit with a command to transmit a third signal for a connection request with the second address information set in a destination address. | 03-06-2014 |
20140089513 | WIRELESS COMMUNICATION APPARATUS AND METHOD - According to one embodiment, a wireless communication apparatus includes a first and a second processing unit. The first processing unit generates a control signal related to connection settings. The second processing unit supports wireless systems and is configured to transmit a first frame including first information related to at least one of the plurality of wireless systems by any of the wireless systems, grasp, based on a second frame received from another wireless communication apparatus, a wireless system supported by the other wireless communication apparatus, select a wireless system used for data exchange with the other wireless communication apparatus based on the second information indicating the grasped wireless system. | 03-27-2014 |
20140161040 | WIRELESS COMMUNICATION TERMINAL - According to one embodiment, a wireless communication terminal including a receiver, a first processor, a first storage, a second storage, a second processor, and a transmitter is provided. The receiver receives one physical packet that includes at least one frame body field, a first field including information on a length of the frame body field, a second field used to detect an error of the frame body field, and a sequence number field including a sequence number corresponding to the frame body field. The second storage retains a successively and successfully received maximum sequence number on the basis of a result of the first processor. The transmitter transmits a response frame indicating the successively and successfully received maximum sequence number when the first processor extracts at least one correct frame body. | 06-12-2014 |
20140185547 | WIRELESS COMMUNICATION APPARATUS AND METHOD - In general, according to one embodiment, there is provided a wireless communication apparatus used for asymmetrical communication, in which frame transmission at a first interval and frame transmission at a second interval longer than the first interval are performed. The apparatus includes a receiver, an interval controller, and a transmitter. The receiver receives a frame for which a flag requesting transmission of an acknowledgement is set. The interval controller changes the first interval to a third interval longer than the second interval in response to reception of the frame. The transmitter performs frame transmission at the third interval. | 07-03-2014 |
20140376027 | IMAGE FORMING APPARATUS CAPABLE OF MAKING USER AWARE OF SECURITY POLICY VIOLATION, METHOD OF CONTROLLING THE IMAGE FORMING APPARATUS, AND STORAGE MEDIUM - An image forming apparatus which is capable of making a user aware of a violation of an information security policy. A network communication unit receives data having a user ID attached thereto from an external apparatus. A printing unit prints an image based on the data. A control unit executes user authentication using the user ID attached to the data and determines, when the user authentication is successful, whether or not a password expiration date of the user has passed. When it is determined that the password expiration date has passed, the control unit restricts printing of the image to be printed based on the data having the user ID attached thereto. | 12-25-2014 |
20150063341 | WIRELESS COMMUNICATION APPARATUS - A wireless communication apparatus supports at least a second wireless communication scheme between a first wireless communication scheme and the second wireless communication scheme. The first wireless communication scheme requires that a wireless medium is determined to be busy when a reception level is equal to or greater than a minimum reception sensitivity level of a physical scheme. The apparatus includes a first processing unit and a second processing unit. The first processing unit is configured to set a value lower than a maximum transmission power of the first wireless communication scheme, for a maximum transmission power of the second wireless communication scheme and set a value greater than the minimum reception sensitivity level of the physical scheme, for a carrier sense level, when the second wireless communication scheme is used. The second processing unit is configured to carry out carrier sense using the carrier sense level. | 03-05-2015 |