Abstract: In a vehicle diagnosis information communication system, electric power is supplied from a battery to a vehicle control computer mounted on the vehicle during a period of vehicle operation, while the electric power is supplied to a radio communication unit mounted on the vehicle irrespective of the vehicle operation. The computer transmits a vehicle information such as engine diagnosis result to the radio communication unit through a communication line. The radio communication unit communicates the received vehicle information to an external site of communication in response to a request of the information form the external site of communication irrespective of the supply of the electric power to the computer. Preferably, the supply of the electric power from the battery to the computer is maintained for a predetermined period after the vehicle operation.

Abstract: An engine including an intermediate shaft which is driven by the crankshaft and drives the camshaft. The intermediate shaft directly drives an oil pump arranged above the trans-axle and drives an alternator and compressor through a pulley connected to the intermediate shaft and a belt. The intermediate shaft is arranged shifted in the lateral direction from the plane containing the axes of the cylinders.

Abstract: A lightsafe masking film is disclosed which comprises a transparent substrate, and a transparent, lightsafe layer peelably provided over the surface of the substrate and containing (a) a nitrile rubber, (b) a vinyl chloride/vinylidene chloride copolymer having an average polymerization degree of 300-600 and a weight ratio of the vinyl chloride units to the vinylidene chloride units of 60:40 to 95:5, and (c) a lightsafe substance, the weight ratio of component (b) to component (a) being in the range of 50:50 to 95:5.

Abstract: A diagnostic imaging apparatus is disclosed in which an ultrasonic wave transmit/receive apparatus is used in common for both 2-dimensional B-mode imaging and for measurement of pulsed Doppler signals, by time sharing operation. The good real time characteristics of 2-dimensional B-mode imaging are retained, together with a sufficiently high data rate for pulsed Doppler measurement, through use of simple means for performing interpolation in the Doppler signals Ultrasonic wave transmit/receive means (21,23 to 25,27) repetitively execute combinations of ultrasonic wave transmit/receive sequences, each combination consisting of a plurality of pulsed Doppler mode ultrasonic wave transmit/receive sequences and a single 2-dimensional B-mode imaging ultrasonic wave transmit/receive sequence. Demodulator means (38 to 41) demodulate the Doppler signals, based on the received signals that are acquired during the pulsed Doppler mode ultrasonic wave transmit/receive sequences.

Abstract: An improved matrix switch circuit comprising an array of analog switches disposed in the form of a matrix and one or more control memories for storing control signals which cause their respective switches of the array to open or close. An interface is provided between the control memories and the array of the switches. The interface receives the control signals from the control memories and holds them. The held signals are then supplied to the switches of the array. While the switches of the array are being controlled according to the control signals held in the interface, the contents of the control memories can be changed at any desired instant.

Abstract: A Doppler signal analyzing apparatus is capable of frequency analysis of a Doppler signal with frequency and time resolutions that match the frequency band of a signal to be analyzed. The signal to be analyzed is divided into a plurality of frequency bands by bandpass means (10.sub.1, 10.sub.2, 10.sub.3), and signals in the frequency bands which have passed through the bandpass means are acquired by signal acquiring means (11) over time slots that are smaller for higher-frequency signals and larger for lower-frequency signals. The signals acquired by the signal acquiring means are subjected to a Fourier transform by Fourier transform means (14).

Abstract: The equipment in this invention provided with an internal signal checking means configured in a combined use with signal processing and display means commonly furnished to an ultrasound diagnostic equipment stores various internal signals and in said equipment by selectively inputting them through a multiplexer into a video memory also used for receive echo signal storage, and said internal signals stored are displayed on a screen of a display means of said equipment as an image or they are evaluated by a processor in said equipment to perform internal signal checking.

Abstract: In ultrasonic transmission from and reception by an array probe in a phased array sonar, when an ultrasonic beam is directed substantially in front of the array probe, an ultrasonic wave having a high center frequency f.sub.o, or a bandwidth extending into higher frequencies, is transmitted and/or received in order to insure a high image resolution. When the ultrasonic beam is steered sideways, an ultrasonic wave having a lower center frequency f.sub.o, or a higher frequency range cutoff in relation to a steering angle .theta., is transmitted and/or received in order to increase the angle at which grating lobes are generated and hence prevent such grating lobes from entering the angle range of the field of view.

Abstract: An ultrasonic probe for puncture treatments is constructed in a manner that a guide member, for guiding a puncture needle, is provided on a side surface of an ultrasonic probe of a linear scanning type, with a needle being positioned by the guide member to be movable at right angles to the surface of the body of a patient, and a beam of ultrasonic wave is emitted by the probe in a direction oblique to the length dimension of the needle. The probe may be positioned obliquely to the needle, in which case, an acoustic coupling member of a wedge shape is inserted in the gap formed between the emitting end of the probe and the body. Alternatively, the probe may be positioned parallel with the needle in which case a wedge shaped member capable of deflecting the ultrasonic waves, is placed on the emitting end of the probe, and a wedge shaped acoustic coupling member is connected to the deflecting member so as to deflect the ultrasonic waves to be oblique to the needle within the body.

Abstract: An ultrasonic probe, such as for use in ultrasonography, comprising a support having a front end, which may be held against a human body, and a central groove in the side thereof for guiding a puncture needle to move therethrough, and an array of rectangular ultrasonic transducer elements mounted on and lying flatwise on the front end, wherein one or more ultrasonic transducer elements are located adjacent to an open end of the groove at the front end between the other transducer elements, whereby the image display of the needle is improved.

Abstract: An echo signal receiver receives higher level echo signals reflected from strong reflections sources or reflecting sources at areas close to a probe in a range of higher frequencies, and also receives lower level echo signals reflected from weak reflection sources or sources at areas remote from the probe in a range of low frequencies. The echo signal receiver comprises a multiple stage amplifier circuit for receiving the echo signal. Outputs from amplifiers at front stages are delivered via filters having higher frequency bands, and outputs from amplifiers at rear stages are delivered via filters having lower frequency bands. The outputs are passed through the filters and then combined into a single processed echo signal.

Abstract: A linear array ultrasonic transducer is provided primarily for use in a medical diagnostic examination device in which an ultrasonic beam is projected toward an object to be examined, thereby to examine the condition of the tissues of that object. The linear array ultrasonic transducer comprises an array of tiny oscillatory elements and electrode leads connected by a conductive adhesive to facilitate the fabrication, and two registering layers and a lens layer mounted on the front sides of the tiny oscillatory elements so that an image of high resolution may be produced.

Abstract: An improved signal isolator including two nonlinear circuits having nonlinear voltage-to-current characteristics, in which an input network is formed by connecting one of the nonlinear circuits in series with the primary winding of a transformer, and an output network is formed by connecting the other nonlinear circuit and an averaging circuit in series with the secondary winding of the transformer. A pulse signal is applied to the input network, the output network or the tertiary winding of the transformer to develop an output signal corresponding to the input signal while the input network and the output network are isolated from each other with respect to direct current.