Abstract: The conventional combination cannot realize an efficient road traffic system as a whole. A transmission system has a plurality of modules installed at different positions along a predetermined road. Each of the plurality of the modules includes a receiving section for receiving an input signal and a transmission section for transmitting an output signal on the basis of the input signal according to a predetermined radio scheme. Each of the plurality of the modules receives and transmits a signal, whereby the whole or part of the information contained in the signal is transmitted along the whole or part of the predetermined road. This transmission system can construct an efficient integrated road traffic system as a whole.

Abstract: Conventional antennas devices provide in sufficient performance in terms of directivity, efficiency, or the like. An antenna device includes a radiating element 11 which is provided with a feed terminal 16 to draw power and has a spiral shape; a passive element 12 which is installed side by side with the radiating element 11 and has a spiral shape; an earth ground 15 disposed in opposing relation to the radiating element 11 and the passive element 12; a first connecting electrode 13 for connecting one end of the radiating element 11 to the earth ground 15; and a second connecting electrode 14 for connecting one end of the passive element 12 to the earth ground 15, and the first and second connecting electrodes 13 and 14 are displaced with respect to each other in a plane which includes the spiral shape.

Abstract: The conventional combination cannot realize an efficient road traffic system as a whole. A transmission system has a plurality of modules installed at different positions along a predetermined road. Each of the plurality of the modules includes a receiving section for receiving an input signal and a transmission section for transmitting an output signal on the basis of the input signal according to a predetermined radio scheme. Each of the plurality of the modules receives and transmits a signal, whereby the whole or part of the information contained in the signal is transmitted along the whole or part of the predetermined road. This transmission system can construct an efficient integrated road traffic system as a whole.

Abstract: An antenna device comprising a conductive earth substrate, a receiving element located in the proximity of said conductive earth substrate and having a receiving terminal, and a transmitting element located in the proximity of said receiving element and having a transmitting terminal, characterized in that an end of said receiving element and an end of said transmitting element are connected to said conductive earth substrate for grounding through a common portion and the frequency band of said receiving element is different from that of said transmitting element.

Abstract: An antenna apparatus having at least one radiating element. A second radiating element is located opposite a first radiating element. Earth is on the side opposite to the first radiating element with respect to the second radiating element thus opposite to the second radiating element. The second radiating element intervenes between the first radiating element and earth. Either the first or the second radiating element employs a feed terminal.

Abstract: Conventional antennas devices provide in sufficient performance in terms of directivity, efficiency, or the like. An antenna device includes a radiating element 11 which is provided with a feed terminal 16 to draw power and has a spiral shape; a passive element 12 which is installed side by side with the radiating element 11 and has a spiral shape; an earth ground 15 disposed in opposing relation to the radiating element 11 and the passive element 12; a first connecting electrode 13 for connecting one end of the radiating element 11 to the earth ground 15; and a second connecting electrode 14 for connecting one end of the passive element 12 to the earth ground 15, and the first and second connecting electrodes 13 and 14 are displaced with respect to each other in a plane which includes the spiral shape.

Abstract: The conventional combination cannot realize an efficient road traffic system as a whole. A transmission system has a plurality of modules installed at different positions along a predetermined road. Each of the plurality of the modules includes a receiving section for receiving an input signal and a transmission section for transmitting an output signal on the basis of the input signal according to a predetermined radio scheme. Each of the plurality of the modules receives and transmits a signal, whereby the whole or part of the information contained in the signal is transmitted along the whole or part of the predetermined road. This transmission system can construct an efficient integrated road traffic system as a whole.

Abstract: A television signal receiver has: receiving means for receiving a television signal; detecting means for detecting a pulse of a video signal obtained from the receiving means; phase detecting means for detecting the phase of the pulse; video signal stabilizing means for conducting image-stabilization on the video signal obtained in the receiving means, in accordance with control information obtained from the phase detecting means and based on the reception disturbance state; and displaying means for displaying a video signal obtained from the video signal stabilizing means. According to this configuration, therefore, the video signal can be stabilized by the video signal stabilizing means, so that disturbance of an image can be reduced.

Abstract: The conventional combination cannot realize an efficient road traffic system as a whole. A transmission system has a plurality of modules installed at different positions along a predetermined road. Each of the plurality of the modules includes a receiving section for receiving an input signal and a transmission section for transmitting an output signal on the basis of the input signal according to a predetermined radio scheme. Each of the plurality of the modules receives and transmits a signal, whereby the whole or part of the information contained in the signal is transmitted along the whole or part of the predetermined road. This transmission system can construct an efficient integrated road traffic system as a whole.

Abstract: The present invention provides an antenna device comprising a conductive substrate and an antenna element located in the proximity of the conductive substrate, in which a portion of the antenna element is formed of a coil or zigzag conductor and an end of the antenna element is connected to the conductive substrate for grounding. In addition, the coil or zigzag conductor is formed at an end of the antenna element and the coil or zigzag conductor and the other end of the antenna element are connected together on an insulator provided on the conductive substrate.

Abstract: The conventional combination cannot realize an efficient road traffic system as a whole. A transmission system has a plurality of modules installed at different positions along a predetermined road. Each of the plurality of the modules includes a receiving section for receiving an input signal and a transmission section for transmitting an output signal on the basis of the input signal according to a predetermined radio scheme. Each of the plurality of the modules receives and transmits a signal, whereby the whole or part of the information contained in the signal is transmitted along the whole or part of the predetermined road. This transmission system can construct an efficient integrated road traffic system as a whole.

Abstract: A mobile unit support system has a mobile unit and a plurality of sources to be detected installed along a route of movement of said mobile unit, characterized in that said mobile unit includes a storage section for storing in advance the information on the arrangement of said plurality of the sources to be detected, a detection section for detecting said sources to be detected, and an arithmetic processing section for producing predetermined information on the basis of said detection information detected and said arrangement information stored.

Abstract: A plurality of antennas are disposed in a predetermined area and wherein size, configuration and mounting condition of the antennas are set so that their directivities formed by interference therebetween are most desirable.

Abstract: A frequency analysis system for eliminating noise from an information signal. The system receives an input signal containing noise, and discriminates an information signal from the noise in the input signal. The system then uses the detected noise to cancel noise in the input signal. In one embodiment, the system builds a history of noise information based upon prior detected noise in the signal, and uses this history to predict current noise in the signal.

Abstract: A mobile unit support system comprises at least one magnetic member for forming a magnetic field in said vicinity of a movement path of a mobile unit which is made of a dielectromagnetic material; and at least one magnetic sensor which, when said mobile unit passes over, detects a change of said magnetic field and which transmits a result of said detection to an external, and said mobile unit comprises receiving means for receiving said transmitted signal, and a processing section which processes a signal from said receiving means.

Abstract: A noise suppressor has signal detecting device 1 for detecting signals A and B on signal lines, sum signal generating device 21 for summing the detected signals, difference signal generating device 22 for differencing the detected signals, noise canceling device 3 for suppressing or removing noise components in a difference signal generated by the difference signal generating device and signal separating device 4 for separating the signal to those corresponding to the signal lines, according to the difference signal with the noise components suppressed or removed and the sum signals.

Abstract: It is a primary object of the invention to provide a noise suppressing device in which the function to suppress or remove the noise is more improved than the conventional device. The invention comprises a tuner section which detects the radio wave and converts it to the electric signal, an antenna connected to the tuner section, a field/disturbance information-detecting section for detecting the carrier level and the like of the input signal based on the signal from inside of the tuner section, a modulation information-detecting section for detecting the modulation degree and the like based on the signal from inside of the tuner section, a noise suppression control section which suppresses or removes the noise from the noise-containing signal input from the tuner section, a noise cancel section, and a noise data-generating section; and the noise-removed signal is output to an amplifier and amplified and sent to a speaker.

Abstract: An intermittent analog voice signal is coded which is contained in an analog mixed signal having the intermittent analog voice signal mixed with a background analog noise signal. An analog-to-digital converter receives the analog mixed signal and generates a coded output signal by digitizing the analog mixed signal when a control signal is applied thereto and does not generate a coded output signal when the control signal is not applied thereto. A voice signal detector means receives the analog mixed signal and detects periods during which the analog voice signal is present in the analog mixed signal. A control signal generator generates the control signal applied to the analog-to-digital converter during voice periods detected by the voice signal detector during which the analog voice signal is present in the analog mixed signal. The analog mixed signal is thus digitized by the analog-to-digital converter only during the voice periods detected by the voice signal detector.

Abstract: A band division process including a Fourier transformation is performed for an inputted speech signal, thereby outputting spectrum signals of plural channels. A cepstrum analysis process is performed for the spectrum signals, and a peak of the obtained cepstrum is detected in response to the cepstrum analysis result. Thereafter, a speech signal interval of the inputted noisy speech signal is detected in response to the detected peak, and a noise is predicted in the speech signal in response to the detected speech signal interval. Then, the predicted noise is canceled in the spectrum signals thereby outputting noise-suppressed spectrum signals. Finally, the noise-suppressed spectrum signals are combined and are inverse Fourier-transformed, thereby outputting a noise-suppressed speech signal.

Abstract: A band division process including a Fourier transformation is performed for an inputted speech signal, thereby outputting spectrum signals of plural channels. A cepstrum analysis process is performed for the spectrum signals, and a peak of the obtained cepstrum is detected in response to the cepstrum analysis result. Thereafter, a speech signal interval of the inputted noisy speech signal is detected in response to the detected peak, and a noise is predicted in the speech signal in response to the detected speech signal interval. Then, the predicted noise is canceled in the spectrum signals thereby outputting noise-suppressed spectrum signals. Finally, the noise-suppressed spectrum signals are combined and are inverse Fourier-transformed, thereby outputting a noise-suppressed speech signal.