Nec Corporation

Nec C Orporation

Wataru Hattori

Keishi Ohashi

Hisao Kawaura

Toru Sano

Kazuhiro Iida

Noriyuki Iguchi

Masakazu Baba

Kota Iwamoto

Toshiyuki Nomura

Kyota Higa

Hiroko Someya

Hiroshi Fukuda

Naoki Kobayashi

Yusuke Takahashi

Masaaki Tanio

Ryo Kawai

Toshitsugu Sakamoto

Shuhei Yoshida

Katsutoshi Takahashi

Hiroshi Sunamura

Yusuke Konishi

Minoru Asogawa

Masahiro Tanomura

Tsutomu Yoshitake

Hiroo Hongo

Masayoshi Tsuji

Koichiro Nakase

Fumiyuki Nihei

Machiko Fujita

An apparatus of this invention is directed to an information processing apparatus that effectively counts, on a type basis, articles of a plurality of types displayed in a depth direction on a display shelf. The information processing apparatus includes a display count acquirer that acquires display count information of articles using article presence/absence sensors provided on the display shelf on which the articles are placed, an article identifier that acquires article identification information capable of identifying the types of articles based on an image acquired by capturing the display shelf, and a display recognizer that recognizes, based on the display count information and the article identification information, display count of each type of the articles.

Article management system, information processing apparatus, and control method and control program of information processing apparatus

A transmitter includes a plurality of transmitter circuits configured to generate signals that are within the same frequency band; and a feedback circuit that is shared by the plurality of transmitter circuits, the feedback circuit being configured to feed back a part of a transmission amplification signal to a transmitter circuit, the transmission amplification signal being output from each of the plurality of transmitter circuits through a transmission amplifier, and the transmitter circuit being configured to output the transmission amplification signal among the plurality of transmitter circuits. The feedback circuit includes a frequency selective extraction unit configured to extract different-band signals in frequency bands from the transmission amplification signal, the frequency bands being different from each other, a synthesis unit configured to synthesize the different-band signals extracted by the frequency selective extraction unit, and to generate a synthesis signal, a frequency conversion unit configured to frequency-convert the synthesis signal generated by the synthesis unit by using a local signal of the same frequency, the local signal being common to a plurality of transmission paths, and a distortion compensation coefficient calculation unit configured to calculate a distortion compensation coefficient based on signals of frequency bands of the different-band signals, the distortion compensation coefficient being used when compensating for distortion of signals in outputs of the plurality of transmitter circuits.

Transmitter, communication system, control method, and program

A transmitter includes: a transmission circuit that outputs, via a transmission amplifier, transmission signals of a same frequency band; and a feedback circuit that feeds back, to the transmission circuit, a distortion compensation coefficient that is used to compensate for distortion of the transmission signals. The feedback circuit includes: a delay circuit that delays each of the transmission signals by a different amount of time; a combining unit that combines the delayed transmission signals to generate a combined signal; a signal conversion unit that converts a frequency of the combined signal to a different frequency using a local signal that is common among the transmission signals, and generates a demodulated digital signal from the combined signal of which the frequency has been converted; and a distortion compensation calculation unit that calculates the distortion compensation coefficient based on the demodulated digital signal.

Transmitter, communication system, and method and program for controlling transmitter

A UHF band RFID system according to the present invention includes a reader antenna that is composed of a matched-terminated open-type transmission line and is connected to a UHF band RFID reader, a first-type RFID tag installed, without being fixed to a managed object, in a managed object placement area in which the managed object is placed, and a second-type RFID tag that is fixed to the managed object and includes tag information for identifying the managed object. When the managed object is placed in the managed object placement area, the managed object is placed in a position where the reader antenna and an antenna of the first-type RFID tag are electric field coupled, and is also placed in a position where the reader antenna and an antenna of the second-type RFID tag are magnetic field coupled.

UHF band RFID system and UHF band RFID tag detection method

A marketing data collection system includes commodity information storage unit () that stores at least one of position information of the target article placement region and commodity identification information, commodity presence/absence determination unit () that determines presence or absence of the target article on the basis of the signal strength information of the RF tag to generate article presence/absence information, refers to the position information of the target article placement region and the commodity identification information to generate commodity presence/absence information in which presence/absence information of the target article and the commodity information are associated with each other and commodity detection time information in which information about the time when the commodity presence/absence information has been generated and the commodity information are associated with each other, and recording accumulation unit () that accumulates the commodity presence/absence information and the commodity detection time information.

Marketing data collection system and non-transitory computer-readable medium storing program therefor

It is impossible to individually identify management target articles in a conventional article management system. An article management system according to the present invention includes a reader antenna that transmits and receives a radio signal; a plurality of tag sheets each including an RF tag and placed on the reader antenna; an RFID reader that reads tag information unique to the RF tag via the reader antenna; and an identification mark attached to each of management target articles and arranged between the management target articles and each tag sheet. On a surface of the identification mark that faces the tag sheets, an identification pattern for identifying the identification mark is formed of a first pattern and a second pattern having a dielectric constant or conductivity lower than that of the first pattern.

Article management system and article management method

A commodity promotion system includes output unit that presents a customer with information, commodity presence/absence determination unit that determines presence or absence of the target article on the basis of signal strength information of the RF tag, commodity information storage unit that stores commodity information list in which the tag information of the RF tag, commodity presence/absence information indicating presence or absence of the target article, output unit ID information of the output unit, and output information indicating information to be presented are associated with one another, and commodity pickup determination unit that detects that the target article has changed from a presence state to an absence state, on the basis of a determination result of the presence or absence of the target article and the commodity presence/absence information in the commodity information list and outputs the output information associated with the tag information to the output unit.

Commodity promotion system and non-transitory computer-readable medium storing program therefor

An article management system according to the present invention includes: a reader antenna () including an open-type transmission line terminated in an impedance matched state; an RF tag () that is placed at a location that is electromagnetically coupled to the reader antenna () and is visible from the reader antenna () in a state where a management target article () is placed in the vicinity of the RF tag; a management target article arrangement region in which the management target article () is placed, the management target article arrangement region being set in a location where the management target article () is electromagnetically coupled to a tag antenna of the RF tag (); and an RFID reader () that sends a transmitted signal to the reader antenna () and receives a response signal output from the tag antenna via the reader antenna (). The presence or absence of the management target article () is detected by detecting a change in operating characteristics of the tag antenna due to the management target article based on a change in intensity or phase of a reflected signal from the RF tag ().

Article management system

An article management system includes RFID tags () fixed above a reader waveguide (), a tag position table storage unit () that stores tag information and fixed positions of the RFID tags () in association with each other, an article position table storage unit () that stores identification information and an assigned position of an article () in association with each other, an article management table storage unit () that stores the identification information of the article () and the tag information of the RFID tags () in association with each other, a tag reading unit () that reads the RFID tags () by electromagnetic coupling through the reader waveguide (), and an article presence/absence determination unit that determines presence or absence of placement of the article () corresponding to the RFID tags () based on results of reading the RFID tags ().

Article management system, article management method, and non-transitory computer readable medium storing article management program

An edge portion which defines a planar shape has two long end sides () which extend in parallel to each other, and two short end sides () which have parallel portions extending in parallel to each other. The two long end sides and the two short end sides are reflection terminals. The parallel portion of the first short end side () includes a first portion () and a second portion (). The positions of the antinodes of a first standing wave formed by a traveling wave directed toward the first portion () and a reflected wave of the traveling wave and a second standing wave formed by a traveling wave directed toward the second portion () and a reflected wave of the traveling wave in a direction substantially parallel to the long end sides () are deviated by &#xbc; of the wavelength of an electromagnetic wave propagating through an electromagnetic wave transmission sheet.

Electromagnetic wave transmission sheet and electromagnetic wave transmission device

An object detection system includes a reader waveguide () formed as an open transmission line, an RFID tag () placed above the reader waveguide (), a signal strength acquisition unit () that acquires signal strength of a read signal read from the RFID tag () by electromagnetic coupling through the reader waveguide (), and an object detection unit () that detects physical characteristics of an object () corresponding to the acquired signal strength based on a relationship between a plurality of (three or more values of) signal strength of the read signal and physical characteristics of the object to be detected.

Object detection system, object detection method, and non-transitory computer-readable medium storing object detection program

An article management system according to the present invention includes: a reader antenna () including an open-type transmission line terminated in an impedance matched state; an RF tag () that is placed at a location that is electromagnetically coupled to the reader antenna () and is visible from the reader antenna () in a state where a management target article () is placed in the vicinity of the RF tag; a management target article arrangement region in which the management target article () is placed, the management target article arrangement region being set in a location where the management target article () is electromagnetically coupled to a tag antenna of the RF tag (); and an RFID reader () that sends a transmitted signal to the reader antenna () and receives a response signal output from the tag antenna via the reader antenna ().

An article management system includes RFID tags () fixed above a reader transmission line (), a metal sheet () having an opening () at positions corresponding to RFID tags () located within an assigned position () assigned to place an article (), a tag reading unit () that reads the plurality of RFID tags () by electromagnetic coupling through the reader transmission line (), and an article presence/absence determination unit () that determines presence or absence of the article () at the assigned position () on the metal sheet () based on results of reading the plurality of RFID tags (). It is thereby possible to manage articles at high speed even when a plurality of RFID tags are placed.

Growing community of inventors

Tokyo, Japan

Wataru Hattori