Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Hitachi, Ltd.

Other

Panasonic Intellectual Property Management Co., Ltd.

Masahiro Mimura

Makoto Hasegawa

Kazuaki Takahashi

Suguru Fujita

Hiroshi Doi

Takaaki Kishigami

Katsushi Yokozaki

Taisuke Matsumoto

Hiroyuki Harada

Kenta Takahashi

Yoshinori Kunieda

Noriyuki Ueki

Yoshio Koyanagi

Katsuaki Abe

Kentaro Miyano

Kazunori Watanabe

Yoichi Nakagawa

Yoshinori Watanabe

Yoshinori Takagi

Masahiko Nakamura

Hiroshi Katayama

Yoichi Seto

Youichi Nakagawa

Takashi Fukagawa

Naoki Adachi

Toshiyuki Tsumura

Yoshiaki Isobe

Yasumi Imagawa

Yasuaki Namura

Yoichi Yamaki

Takuo Ishizuka

Yasunari Tanaka

Shinji Hirata

Hideko Sakai

Hideitsu Hino

Hirohide Hirabayashi

Tadaaki Ushiyama

Yasuaki Yuda

Takenori Sakamoto

Mitsuo Makimoto

Kazuo Takaragi

Kazuhiko Hino

Hirofumi Nagasuka

Yoshio Horiike

Daisuke Matsuka

Yusuke Jin

Yoshiyuki Yokoajiro

Kyohei Fujimoto

Yasuo Yoshimura

Masakatsu Nishigaki

Terue Matsumura

Yoichi Shibata

Masaji Aoki

Masanobu Kanaya

Hideki Ishiai

Hiroaki Muratani

Shuichi Tanaka

A technology is provided in which moving objects positioned at a different place and having more than the number of the cameras are displayed on a display device. The present invention is directed to a moving object imaging device including a camera, a deflection unit, a controller configured to control the camera and the deflection unit, an imaging processing part, and an imaging display part, thereby imaging the moving object in a sequentially repeating manner and creating moving image data based upon images acquired by the image processing part to display the created moving image data on the image display part.

Moving object imaging device and moving object imaging method

A pulse radio receiving apparatus includes a reference waveform generation section that generates a reference waveform signal, a delay section that generates a plurality of delayed waveform signals by delaying the reference waveform signal by different amounts of delay, a correlation calculation section that generates a plurality of correlation value signals showing correlation values between a received signal, and the reference waveform signal and the delayed waveform signals, a determination section that compares predetermined combinations of the plurality of correlation value signals and generates a difference detection signal showing a direction and degree of a phase shift between the received signal and the reference waveform signal according to comparison results, and a synchronization control section that controls a phase of the reference waveform signal generated by the reference waveform signal generation section based on the difference detection signal.

Pulse radio receiver

A personal authentication system using biometrics information. The system orders, when an characteristic element in the biometrics information (such as a characteristic point in a fingerprint) can be expressed with two types of information (such as, for instance, a coordinate values for a characteristic point in a fingerprint and a local partial image), the characteristic points using one type of information (for instance, local partial image) as label information, and outputs other type of information (such as coordinate values) as key information according to the order.

Method for generating an encryption key using biometrics authentication and restoring the encryption key and personal authentication system

A wireless communication method wherein the power consumption can be reduced as compared with the conventional one and a wireless communication apparatus can synchronize its super-frame with the super-frame of another wireless communication apparatus in an ad hoc network. According to this method, in the ad hoc network where a plurality of wireless communication apparatuses use broadband signals to data-communicate with each other, a wireless communication apparatus transmits an end tone () for identifying the end of a super-frame (), and when another wireless communication apparatus receives the end tone (), it synchronizes the end of its super-frame () with the end of the foregoing super-frame (). In this way, the super-frames () can be synchronized even without any beacons.

Wireless communication method and wireless communication apparatus

Provided is a radio communication method which can reduce the power consumption as compared to the conventional technique while realizing coexistence of a plurality of radio communication methods and can perform synchronization with a super frame of other radio communication device. The super frame has life confirmation slots () through which radio communication devices of various modulation types should transmit tone signals. A radio communication device has a chance to judge whether one or more radio communication devices using a different modulation type exist or no such device exists in the vicinity. If no such device exists, the slot to be used by the radio communication device of the modulation method is reported as a time that can be used by a radio communication group of other modulation method. Thus, by confirming existence of an object in the vicinity by other radio communication device with which communication cannot be performed, communication can be performed by sharing the super frame.

Radio communication method and radio communication device

A biometric authentication device has a threat of an attack of pretending to be someone else by such as forgery. The present invention supports a service provider to appropriately decide the level of such threat. A vulnerability verification serveris provided in the system, and the vulnerability of each biometric product is centrally managed. A service providersends the information that specifies the device in which a client terminalexecutes the biometric authentication to the vulnerability verification server, and receives the vulnerability information. The service providerdecides whether the service can be provided or not to the client terminalusing the vulnerability information that was received.

Biometric authenticaton system and method with vulnerability verification

A transmitting apparatus, receiving apparatus and communication system are disclosed, and great improvement in an S/N ratio, preventing an actual throughput from decreasing, and preventing the number of circuits for synchronizing spread spectrum signals from increasing can be expected at the receiving apparatus side. The transmitting apparatus includes a pulse generating circuit, pulse repetition cycle determining circuit, peak power determining circuit, and modulator. The pulse generating circuit generates pulse strings, pulse repetition cycle determining circuit determines, based on a clock signal, a pulse repetition cycle of the pulse string generated by the pulse generating circuit. The peak power determining circuit determines a pulse peak power of the pulse string. The modulator modulates the pulse string with transmission data, and then generates a transmission signal.

Transmitting apparatus, receiving apparatus and communication system

An impulse waveform generating apparatus includes a multistage delay pulse signal generating part for generating a plurality of delay pulse signals by a timing signal; a signal source signal generating part for generating a signal source signal indicating the frequency component of an impulse waveform signal by the delay pulse signals; an envelope formation signal generating part for generating an envelope formation signal indicating the amplitude component of the impulse waveform signal by the delay pulse signals; and a mixer part for multiplying the signal source signal by the envelope formation signal to generate a prescribed impulse waveform signal. The impulse waveform generating apparatus generates the impulse waveform signal from the timing signal. Therefore, the circuit arrangement requires no digital-to-analog converter, the operational frequency of each element can be reduced, and the power consumption can be reduced.

Impulse waveform generating apparatus and radio-frequency pulse waveform generating apparatus

A computer readable medium embodying a program to be executed by a terminal device used for a biometric authentication, the program including: an image generation code generating an enrolled image and a verification image from biometric information of a user collected at a sensor coupled to the terminal device; a filter generation code generating a random filter for scrambling the enrolled image and an inverse filter of the random filter; a transformation code transforming the enrolled image to a registration template by applying the random filter to the enrolled image and transforming the verification image to a filtered verification image by applying the inverse filter to the verification image; communication code transmitting the registration template and the filtered verification image to a biometric server thereby the biometric server performs biometric authentication of the user based on the cross-correlation between the registration template and the filtered verification image.

Method, system and program for authenticating a user by biometric information

A radio communication device includes a communication data selection unit for selecting from the received radio communication data containing communication time reservation request information in which a time slot for performing data transmission source radio communication device is described and a communication information analysis unit for extracting an identifier of the source radio communication device and the data transmission reservation time slot from the communication time reservation request information in the radio communication data. When the received radio communication data is addressed to the local device, a communication/response information generation unit correlates the identifier to the reservation time slot, records them in a communication reservation table, and generates communication time reservation response information including information of the reservation time slot.

An impulse waveform generating apparatus comprises an oscillator for generating a reference signal having a center frequency in a frequency band of an impulse to generate, a timing matching circuit for shifting a phase of the reference signal by 90 degrees, a frequency demultiplier for dividing a frequency of the phase shift signal and obtaining a timing signal having a frequency component having a frequency width of an impulse to generate, a memory storing a waveform shape table, a waveform forming section for forming a waveform in synchronism with the timing signal, according to information of a shape table having a predetermined waveform, a low-pass filter for obtaining an envelope signal from an output signal of the waveform forming section, and a waveform generating section for changing an amplitude of the reference signal according to a value of the envelope signal.

Impulse waveform generating apparatus

A beacon slot position control section of a radio communication apparatus constituting a radio network system which detects whether empty beacon slots are present in a beacon period. When an empty beacon slot is present before the period in which the radio communication apparatus transmits a beacon, a movable counter starts counting a specified number of super frames. When the count is completed, the radio communication apparatus transmits a beacon of the radio communication apparatus at the earlier empty beacon slot. Consequently, since the empty beacon slots are eliminated and the beacon period is compacted, even if the number of radio communication apparatuses joining the radio network system fluctuates dynamically, the radio communication apparatus can perform radio communication with high efficiency and less waste of consumed electricity.

Radio communication method and radio communication apparatus

A frame such as a beacon in wireless communication, with a maximum MAC address, hop count, and maximum hop count, described therein is exchanged between nodes. All the nodes measure the number of hops from a node with the maximum MAC address, and exchange the maximum hop count (hmax) out of the numbers with each other. Hop count H(a,b) between arbitrary nodes a and b is expressed by H(a,b)&#x2266;H(a,max)+H(max,b)&#x2266;2*hmax, where hmax is a hop count from node (max) with the maximum MAC address to the farthest node. That is, the number of hops between two arbitrary nodes in the group is always 2*hmax or less. Herewith, a numeric value assuredly exceeding the maximum value out of the numbers of hops between nodes in an ad-hoc network can be propagated in the entire ad-hoc network.

Communication method and wireless communication device having a frame which is exchanged between nodes

A communication system includes a modulating circuit to increase the amount of information to be transmitted, a transmitting apparatus capable of easily generating a desired waveform even for any very short wavelets, a receiving apparatus capable of easily separating wavelets even if the intervals thereof are narrow. The modulating circuit includes clock generating, transmission signal generating, control signal generating, delay and wavelet generating parts. The clock generating part generates a clock signal at predetermined time interval 'Tp'. The transmission signal generating part generates a transmission signal at interval 'Tp'. The control signal generating part outputs a control signal of a predetermined duration based on the clock signal. The delay part generates the control signal as a delay signal that has been delayed by a delay amount based on the transmission signal. The wavelet generating part generates a wavelet at the generation timing of the delay signal.

Modulating circuit, transmitting apparatus using the same, receiving apparatus and communication system

Growing community of inventors

Tokyo, Japan

Masahiro Mimura