摘要:
A parametric loudspeaker utilizes nonlinearity of air relative to ultrasonic waves for producing an audio frequency having super directivity, and to thus provide a limited listening area public address system subject to a large listening area by safeguarding listeners by the provision of a framework for intercepting powerful ultrasonic waves and an acoustic filter. The depth and energy consumption of the parametric loudspeaker are reduced by the use of a reflective plate. Arbitrary directivity is obtained by the provision of a mechanism to move an ultrasonic wave radiator or the reflective plate. The parametric loudspeaker and any other loudspeaker may be combined.
摘要:
A disclosed system includes electronic tags and a communication apparatus that communicates with the electronic tags and includes management information to manage the electronic tags. In the disclosed system, each of the electronic tags contains an ID a part of which represents one of group IDs identifying groups among the electronic tags and is configured to send a response when a request sent from the communication apparatus contains a corresponding one of the group IDs; and the communication apparatus is configured to send requests one by one each of which requests contains one of the group IDs, thereby to request the electronic tags group by group to send responses to the communication apparatus, and to recreate the management information based on the responses.
摘要:
To provide a novel compound which has S1P receptor agonistic activity, exhibits excellent immunosuppressing effect, gives less adverse side effects, and can be orally administered.The invention provides a compound represented by general formula (I) (wherein A is a single bond, —O—, or —CH2—; R1 represents a hydrogen atom or a C1-C6 alkyl group, and V represents any one group selected from among the following groups (1) to (3): (1) -G1-, (2) -G2-N(R2)-G3-, and (3) a group represented by formula 2, wherein each of Z1 and Z2 represents a hydrogen atom or a C1-C6 alkyl group, Z3 represents a hydrogen or the like, Q represents —CH2—O— or the like, and Y represents a group represented by formula 3, a salt thereof, or a solvate thereof.
摘要:
A communication channel establishing method is provided that is used in a communication system including a base station that transmits a beacon on a predetermined communication channel and a communication apparatus that receives the beacon from the base station and establishes communication with the base station using the predetermined communication channel. The method involves detecting at the base station whether a main power supply has been shut off, driving the base station by a backup power supply and transmitting a power supply shutoff notification signal from the base station to the communication apparatus upon detecting that the main power supply has been shut off, storing a current communication channel of the communication apparatus when the power supply shutoff notification signal from the base station is received by the communication unit, and reestablishing communication with the base station at the communication apparatus using the stored current communication channel upon recovery of the main power supply.
摘要:
An electronic inventory tag system including an electronic inventory tag, a management apparatus using a management database for managing the electronic inventory tag, and a relay apparatus for relaying communications between the electronic inventory tag and the management apparatus is disclosed. The relay apparatus transmits a non-registration call. The electronic inventory tag determines whether the electronic inventory tag is registered when receiving the non-registration call. The electronic inventory tag transmits a non-registration response to the relay apparatus when determining that the electronic inventory tag is unregistered. The relay apparatus transmits non-registration detection data to the management apparatus when receiving the non-registration response. The management apparatus registers electronic inventory tag data corresponding to the electronic inventory tag in the management database based on the non-registration detection data.
摘要:
There is disclosed a communication method of a communication system having a base station for transmitting a beacon and a terminal for receiving the beacon transmitted from the base station and performing communication with the base station, the communication method including the steps of: transmitting the beacon by the base station, the beacon being made of a plurality of sub-beacons including an ID for identifying the terminal; and stopping processing for communication with the base station by the terminal when at least one of the plural sub-beacons has a portion that does not match an ID of the terminal.
摘要:
There is disclosed a communication method of a communication system having a base station for performing a call and a terminal for returning a response to the call from the base station, the communication method including the steps of: transmitting the call by the base station, the call including response probability; and responding to the base station by the terminal based on the response probability when the call from the base station is received.
摘要:
An image processing device includes: (1) a scanner unit for inputting image data; (2) an image memory for storing the image data; (3) a machine control board for confirming the characteristics of the image data; (4) a binary image processing section for performing image processing with respect to the image data; (5) an operation key group for setting a processing mode of the binary image processing section; and (6) a main-CPU for managing (i) the characteristics of each image data confirmed by the machine control board and (ii) a processing mode set by the operation key group, as management information, with reference to the corresponding image data stored in the image memory. The binary image processing section performs image processing with respect to the image data according to the management information managed by the main-CPU. Since the image data is processed according to its management information managed in the management table, it is possible to manage the image processing so that appropriate image processing is applied to each inputted image data, and that time-wasting image processing is not applied to image data improperly inputted.
摘要:
A wireless communication system is provided for establishing wireless communication between a wireless communication apparatus and a battery-driven communication terminal apparatus in which system the power consumption rate of the communication terminal apparatus can be reduced. The wireless communication system includes a trigger signal transmission line for transmitting a trigger signal from the wireless communication apparatus to the communication terminal apparatus, and a data communication line for establishing data communication between the wireless communication apparatus and the communication terminal apparatus. The data communication between the wireless communication apparatus and the communication terminal apparatus is established in response to the trigger signal that is transmitted by the trigger signal transmission line.
摘要:
N.sub.1 -(1,2-cis-2-halogenocyclopropyl)-substituted pyridonecarboxylic acid derivatives represented by the following formula (I) the terms of which are defined in the specification and the salts thereof are disclosed: ##STR1## These compounds have patent antibacterial activities against a wide variety of infectious bacteria and are useful as antibacterial agents by oral or parenteral administration.