Abstract: A reference image acquisition unit (171) obtains a reference image for guiding a portable device (1) to a position in which near field wireless communication with a terminal device (2) is possible on the basis of portable device identification information for identifying a type of the portable device (1). A reference image display control unit (172) displays the reference image obtained by the reference image acquisition unit (171) on a display unit (12) provided on an opposite surface of the portable device (1) to a surface that opposes the terminal device (2) when the portable device (1) is brought close to the terminal device (2). A reference image correction unit (173) corrects a position of the reference image in response to an image moving operation for aligning the reference image displayed on the display unit (12) with a target mark formed on a front surface of the terminal device (2).

Abstract: An information notification apparatus includes a first reception unit that receives a first state change notification indicating that the operating state of an electrical appliance has changed to a first state, a transmission unit that transmits a state notification indicating that the operating state of the electrical appliance is the first state to an information terminal, and a second reception unit that receives an acknowledgement notification. The first reception unit further receives a second state change notification indicating that the electrical appliance has been changed to a second state from the electrical apparatus.

Abstract: A warranty expiration date determining device includes: a receiving unit which receives owner information, appliance information, and operating information of a device; an obtaining unit which obtains, from an information database in which at least owner information, appliance information, and operating information of appliances are registered in association with respective owners of the appliances, operating information associated with a specific owner inferred among the owners of the appliances, based on the owner information and the appliance information of the device received, a usage period estimating unit which estimates a usage period of the appliance based on the obtained operating information and the received operating information; and a warranty expiration date determining unit which determines a first day of use of the appliance by extending back the estimated usage period from current time and date, and determines the warranty expiration date of the appliance.

Abstract: A transmission device includes a first light emission unit having a light source for emitting one optical signal. A reception unit includes an X-Y address system image sensor, having a pixel region including a plurality of pixels, for receiving the optical signal by the pixel region; a classification unit for creating classification information representing a pixel group including pixels, among the plurality of pixels, which are irradiated with the optical signal; and a control unit for controlling the X-Y address system image sensor in accordance with the classification information to simultaneously read signals of the pixels belonging to the pixel group.

Abstract: A light module 100 performs short-range wireless communication with another optical module 200, and includes an optical transmitter 120 for emitting a transmission optical beam, and an optical receiver 130 for receiving a reception optical beam. The optical transmitter 120 includes a light source 121 for emitting an optical signal based on information to be transmitted, and a lens 122 for the light source 121, for focusing the optical signal emitted by the light source so that the focused optical signal is emitted. The transmission optical beam includes a main beam having a center of intensity distribution at a substantially center position 128 of the lens 122 for the light source 121, and a sub-beam having a center of intensity distribution on the outside 129 of a predetermined region from the center of intensity distribution of the main beam.

Abstract: An optical transmitter for performing high-rate data communication by means of optical space transmission is provided, which can reliably perform optical axis adjustment manually and visually, and can prevent a device from being made large in size and manufacturing cost of the device from being increased by using an simply-constructed optical transmitter. Thus, the optical transmitter of the present invention comprises an incident beam restriction section operable to allow only a visible beam which is emitted by a terminal located within a range in which an infrared beam is emitted and incident thereon to pass therethrough, a reflection section operable to reflect the visible beam which has passed through the incident beam restriction section, and a light source operable to emit the infrared beam to pass through the reflection section according to a data transmission request signal from the terminal.

Abstract: A SW (70) receives an Ethernet® signal from an outside of areas E and F. The SW (70) selects and outputs the obtained Ethernet® signal to any one of APs (91a to 91e) in accordance with a network structure managed by the SW (70). The AP (91a to 91e) converts the Ethernet® signal to an electrical signal type wireless LAN signal, which is in turn output to a main station (10). The main station (10) frequency-multiplexes the signal output from each of the APs (91a to 91e), and converts the signal to an optical signal, which is in turn output to sub-stations (20a and 20b). The sub-station (20a and 20b) transmits the signal transmitted from the main station (10) to a terminal in the form of a wireless radio wave. Thereby, when a plurality of communication areas are present, the accommodation capacity of an AP can be effectively utilized in each communication area.

Abstract: A transmission device includes a first light emission unit having a light source for emitting one optical signal. A reception unit includes an X-Y address system image sensor, having a pixel region including a plurality of pixels, for receiving the optical signal by the pixel region; a classification unit for creating classification information representing a pixel group including pixels, among the plurality of pixels, which are irradiated with the optical signal; and a control unit for controlling the X-Y address system image sensor in accordance with the classification information to simultaneously read signals of the pixels belonging to the pixel group.

Abstract: A light emission section, including a light emitting element such as a semiconductor laser, emits a light beam in accordance with communication data. A light reception section, including a light receiving element such as a photodiode, receives the light beam emitted by the light emission section. The light emission section and the light reception section are positioned and an emission angle and an incidence angle of the light beam are determined such that the light beam emitted by the light emission section to the light reception section is prevented from being reflected by a surface of the optical reception section and/or a mounting substrate and being returned to the light emission section.

Abstract: There included are a plurality of light receiving sections (121, 122) for receiving a plurality of optical signals (R1, R2) and respectively converting the received optical signals to a plurality of electrical signals (r1, r2); a first calculating section (130) for subjecting the plurality of electrical signals (r1, r2) to a process of canceling interference components occurring due to propagation of the plurality of optical signals through space; and a second calculating section (140) for calculating, with respect to each of the plurality of electrical signals whose interference components have been canceled by the first calculating section, whether or not a distortion occurring due to optical beat interference has a value less than or equal to a predetermined permissible value.

Abstract: A wireless communication system capable of keeping a level of a wireless signal received by a relay apparatus within a predetermined dynamic range. In a control apparatus, a transmitting section converts a downstream electric signal into a downstream optical signal and transmits the downstream optical signal to the relay apparatus via an optical transmission path. The relay apparatus converts the received downstream optical signal into a downstream electric signal and transmits the downstream electric signal as a wireless signal to a wireless communication terminal from a transmitting/receiving antenna section. In the relay apparatus, a level adjustment section adjusts the level of the wireless signal transmitted by the relay apparatus such that the receiving level of the wireless signal received by the relay apparatus is kept within a predetermined range.

Abstract: An optical transmitter for performing high-rate data communication by means of optical space transmission is provided, which can reliably perform optical axis adjustment manually and visually, and can prevent a device from being made large in size and manufacturing cost of the device from being increased by using an simply-constructed optical transmitter. Thus, the optical transmitter of the present invention comprises an incident beam restriction section operable to allow only a visible beam which is emitted by a terminal located within a range in which an infrared beam is emitted and incident thereon to pass therethrough, a reflection section operable to reflect the visible beam which has passed through the incident beam restriction section, and a light source operable to emit the infrared beam to pass through the reflection section according to a data transmission request signal from the terminal.

Abstract: Provided in a wireless LAN transmission system, having convenience and improved security, in which a wireless communication terminal located in a wireless communication area is capable of changing a setting of a connection, and capable of disconnecting the wireless communication terminal from the connection if the connection is unnecessary. A control management section (7) controls a switching section (5) based on an initial setting (S001). When a beacon signal transmitted from the wireless communication terminal is detected in a signal monitoring block (8) (S002), the control management section switches an operation of the switching section (5) so as to transmit signals outputted from all of at least one access point (4) to the wireless communication terminal (S003).

Abstract: A light emission section 13, including a light emitting element such as a semiconductor laser, emits a light beam in accordance with communication data. A light reception section 23, including a light receiving element such as a photodiode, receives the light beam emitted by the light emission section 13. According to the present invention, the light emission section 13 and the light reception section 23 are positioned and an emission angle and an incidence angle of the light beam are determined such that the light beam emitted by the light emission section 13 to the light reception section 23 is prevented from being reflected by a surface of the optical reception section 21 and/or a mounting substrate 22 and being returned to the light emission section 13.

Abstract: A SW (70) receives an Ethernet® signal from an outside of areas E and F. The SW (70) selects and outputs the obtained Ethernet® signal to any one of APs (91a to 91e) in accordance with a network structure managed by the SW (70). The AP (91a to 91e) converts the Ethernet® signal to an electrical signal type wireless LAN signal, which is in turn output to a main station (10). The main station (10) frequency-multiplexes the signal output from each of the APs (91a to 91e), and converts the signal to an optical signal, which is in turn output to sub-stations (20a and 20b) The sub-station (20a and 20b) transmits the signal transmitted from the main station (10) to a terminal in the form of a wireless radio wave. Thereby, when a plurality of communication areas are present, the accommodation capacity of an AP can be effectively utilized in each communication area.

Abstract: The present invention is directed to a wireless communication system capable of keeping a level of a wireless signal received by a relay apparatus (20) within a predetermined dynamic range. In a control apparatus (10), a transmitting section (102) converts a downstream electric signal into a downstream optical signal and transmits the downstream optical signal to the relay apparatus (20) via an optical transmission path (40). The relay apparatus (20) converts the received downstream optical signal into a downstream electric signal and transmits the downstream electric signal as a wireless signal to a wireless communication terminal (30) from a transmitting/receiving antenna section (204). In the relay apparatus (20), a level adjustment section (207) adjusts the level of the wireless signal transmitted by the relay apparatus (20) such that the receiving level of the wireless signal received by the relay apparatus is kept within a predetermined range.