Beams generated from first and second laser light sources are reflected by a beam splitter to proceed toward an optical disc. The laser beams focus onto the optical disc via a selective light-transmitting part installed in front of the optical disc and an objective lens. The selective light-transmitting part is formed by an inner circular part for transmitting only the laser beam of first wavelength and a peripheral part for transmitting only the laser beam of second wavelength. The beam having ...

The invention relates to UPC/NPC method for guaranteeing the quality of service in an asynchronous transfer mode networks. The method comprises a first step of performing the operation of UPC/NPC for a stream of CLP=0 cells, based on PCRA algorithm (Po) for the conventional stream of CLP=0 cells. And, UPC/NPC for the stream of CLP=0+1 cells is performed by PCRA algorithm (Po.sub.+1) for the conventional stream of CLP=0+1 cells, together with the compensation circuit using a single register of th...

A method for acquisition of seismic data from an area surveyed using a group of seismic energy sources and a group of seismic streamer cables, particularly a marine area, includes forming a first group A from at least two elements of either seismic energy sources S or seismic streamer cables C having a spacing X between said elements, forming a second group B from at least two of the other elements of sources S or cables C than that forming group (A), spacing the elements in group B a distance e...

A beam generated from a laser light source are reflected by a beam splitter to proceed toward an optical disc. The beam focus onto the optical disc via a selective light-transmitting part installed in front of the optical disc and an objective lens. The beam is totally transmitted through an inner circular portion of the selective light-transmitting part and half transmitted through a peripheral portion of the selective light-transmitting part. The beam transmitted through the inner circular por...

An X-ray microscope having an incident X-ray beam (10) from an X-ray source, a first crystal element (14) extending at an angle (.beta.) across the path of the incident X-ray beam (10), a second crystal element (16) extending parallel to the first crystal element (14) and in spaced relationship (22) thereto, a sample (20) in spaced relationship to the second crystal element (16) and downstream thereof relative to the incident X-ray beam, the first and second crystal elements being movable relati...

A process and apparatus for visualization of internal stresses in solid mrials by an acoustic microscope (10) connected to an (5) having a circular or spherical transmitting and receiving surface (8) for transmitting ultrasonic waves to and receiving reflected waves from a sample (3) to be examined in a body of liquid (2), such as water, a motor drive unit (7) having a movable arm thereon (6) connected to the acoustic lens (5) for supporting and moving the for scanning the sample, the motor driv...

A compact disk-interactive (CD-I) system which can reproduce CD-ROMs programmed using different codes as well as general compact disks for use as a multimedia appliance. Besides a first CPU for controlling the operation of the system, a CD drive, and video and audio output devices, the CD-I system includes a second CPU for decoding data from a CD-ROM, a memory for storing the operation system of the second CPU, a bus arbitration logic for arbitrating the operation priority of the system bus betw...

An improved automatic machine for sterilization and aseptic packing of meat products such as a piece of ham, shoulder meat or the like. The machine operates in a continuous cycle and includes first, second and third stations. The first station sterilizes an outer surface of a meat piece which is fed, after pasteurization, in a stripped condition into the first station. The first station has a tightly sealable chamber with a grid deck for supporting and then releasing the meat piece. The first st...

An apparatus and improved method for transmitting an information signal. According to the improved method, an information signal is transmitted under water from a transmitter located at a first place to a receiver located distant therefrom at a second place. In performing the signal transmission, a modulated ultrasound carrier signal is delivered to the water and is formed with a fixed amplitude value in the transmitter. The modulation is performed by pulse duration modulating (with an informati...

Composition for washing keratinous materials, in particular hair and/or the skin, characterized in that it contains, in an aqueous medium, at least one silicone insoluble in this medium, at least one anionic, nonionic or amphoteric detergent surfactant and at least one scleroglucan optionally treated with glyoxal.