Patent application number | Description | Published |
20100297931 | EMERGENCY INFORMATION DELIVERY SYSTEM, EMERGENCY INFORMATION DELIVERY METHOD, TRANSMISSION SERVER, AND MOBILE TERMINAL - A transmission server includes an emergency information generator configured to generate emergency information indicating at least occurrence of emergency, an incoming operation identifier generator configured to generate an incoming operation identifier indicating at least an incoming operation for the broadcast message, and a communication unit configured to transmit the broadcast message including the emergency information and the incoming operation identifier. A mobile terminal includes a communication unit configured to receive the broadcast message, and a notification unit configured to execute the incoming operation for the broadcast message in accordance with the incoming operation indicated by the incoming operation identifier generator. The broadcast message in the radio network includes at least a message field and a specific type field. The emergency information is included in the message field, and the incoming operation identifier is included in the specific type field. | 11-25-2010 |
20110117929 | LOCATION REGISTRATION PROCESSING METHOD AND MOBILE STATION - A location registration processing method according to the present invention includes steps of: starting, at a mobile station (UE), the location registration processing on the basis of predetermined system information, when acquiring the predetermined system information among a plurality of pieces of system information broadcasted by a radio base station (eNB), the predetermined system information including information necessary for performing the location registration processing; and acquiring the rest of the plurality of pieces of system information. | 05-19-2011 |
20110201380 | RADIO BASE STATION AND MOBILE STATION - Provided is a mobile station UE equipped with a broadcast information generation unit ( | 08-18-2011 |
20110263239 | MOBILE STATION, MOBILE COMMUNICATION METHOD AND NETWORK DEVICE - A mobile station (UE) according to the present invention includes a CSG cell management unit ( | 10-27-2011 |
Patent application number | Description | Published |
20090214198 | OPTICAL TRANSMITTER - A optical transmitter includes a light device provided a driving current and for emitting light on the bases of the driving current; a light measure for measuring an output light level of the light device; a controller for controlling the driving current to the light device and for changing the measured output light power level into a set output light power level of the light device; a current measure for measuring a level of the driving current to the light device; an abnormality detector for detecting an aged deterioration of the light device on the bases of the current level of the driving current by the current measure and the measured output light power level by the light measure; and an adjuster for reducing the set output light power level in the controller when the abnormality detector detects the aged deterioration of the light device. | 08-27-2009 |
20090238562 | OPTICAL TRANSMISSION APPARATUS, SUBSCRIBER APPARATUS AND OPTICAL COMMUNICATION SYSTEM - An optical transmission apparatus communicable with a plurality of subscriber including a delay measuring part for detecting a response delay time from each subscriber based on reception timing of the delay measurement response optical packet, a detection part for detecting a received optical level of the delay measurement response optical packet received by the reception part and a state determination part for determining quality of an optical transmission state between the optical transmission apparatus and each subscriber based on the received optical level of the delay measurement response optical packet of each of the plurality of subscribers. | 09-24-2009 |
20090238582 | Optical receiver - In an optical receiver, a light receiving element receives the optical packet signals and converts the optical packet signals to electrical signals. A bias voltage supply section supplies bias voltage to the light receiving element. A monitoring section monitors an input level of each optical packet signal or each electrical signal and transmits a monitored value to the bias voltage supply section. In addition, the bias voltage supply section temporarily increases the bias voltage according to magnitude of the monitored value after an end of receiving of each optical packet signal. | 09-24-2009 |
20090324238 | Single-fiber bidirectional optical transmitter/receiver - A single-fiber bidirectional optical transmitter/receiver includes a single-fiber bidirectional optical transmission/reception device. A circuit board has a signal processing circuit and a drive circuit configured to drive the single-fiber bidirectional optical transmission/reception device. A main housing accommodates the single-fiber bidirectional optical transmission/reception device and the circuit board. A ground part of a reception side of the single-fiber bidirectional optical transmission/reception device is electrically connected to a ground part of a transmission side of the single-fiber bidirectional optical transmission/reception device through a ground wiring pattern formed on a flexible printed board. | 12-31-2009 |
20110170874 | Method, system, and apparatus for optical communication - An optical communication method includes outputting an optical data signal in which a signal amplitude of a non-data area that is an area other than a data area is made higher than a signal amplitude of the data area, to a predetermined receiver, receiving an optical input including the optical data signal with the predetermined receiver, detecting each of the signal amplitude of the non-data area and the signal amplitude of the data area of the optical input, creating a threshold for encoding the data area based on the signal amplitude of the data area, determining whether the optical data signal is received, based on the signal amplitude of the non-data area, and outputting a data signal in which the data area is encoded by using the threshold of the optical data signal, when it is determined that the optical data signal is received. | 07-14-2011 |
20130071106 | OPTICAL RECEIVER - In an optical receiver, a light receiving element receives the optical packet signals and converts the optical packet signals to electrical signals. A bias voltage supply section supplies bias voltage to the light receiving element. A monitoring section monitors an input level of each optical packet signal or each electrical signal and transmits a monitored value to the bias voltage supply section. In addition, the bias voltage supply section temporarily increases the bias voltage according to magnitude of the monitored value after an end of receiving of each optical packet signal. | 03-21-2013 |
20130223838 | TRANSMITTING APPARATUS AND TRANSMITTING METHOD - A transmitting apparatus connected via an optical branching apparatus to an optical communication device group includes a control unit that for each periodic transmission period including a first transmission period with a test period in which the optical communication device group is not allowed to transmit optical signals and a second transmission period without the test period, allows the optical communication device group to transmit the optical signals during a period different from the test period; a test light sending unit that sends test light to the optical branching apparatus during the test period; a light receiving unit that receives optical signals transmitted from the optical communication device group, and reflected light of the sent test light; a measuring unit that measures intensity of the reflected light received at different elapsed times after the test light is sent; and an output unit that outputs information based on the measured intensity. | 08-29-2013 |
20140029958 | DETECTING APPARATUS, OPTICAL RECEIVING APPARATUS, DETECTING METHOD, AND OPTICAL RECEIVING METHOD - A detecting apparatus includes a threshold detection circuit that detects by a switchable time constant, a threshold of a level of an input optical burst signal; an input detection circuit that detects input of the optical burst signal; a level detection circuit that detects a level of the optical burst signal; a switching circuit that switches the time constant when a period that corresponds to the level detected by the level detection circuit has elapsed after the input is detected by the input detection circuit; and an output circuit that outputs the threshold detected by the threshold detection circuit. | 01-30-2014 |
20150117863 | OPTICAL RECEIVING DEVICE AND TRANSMISSION DEVICE - An optical receiving device includes: a conversion device that converts an input burst optical signal into a positive phase electrical signal and a negative phase electrical signal; an amplification device that amplifies the positive phase electrical signal and the negative phase electrical signal; a first output terminal that outputs the positive phase electrical signal; a second output terminal that outputs the negative electrical signal; a first transmission line that couples the amplification device with the first output terminal and transmits the positive phase electrical signal; a second transmission line that couples the amplification device with the second output terminal and transmits the negative phase electrical signal; and a control device that reduces a potential difference between the first transmission line and the second transmission line in a no-signal period that is provided between burst optical signals. | 04-30-2015 |