Abstract: The present invention relates to a recording medium recorded with audio data and general data (including image data for computers and character data) mixed together, provided with data for each control region, where by providing a special simple control region, editing of complicated control regions does not have to be carried out and a memory region is not necessary as a working region for editing.The present invention also provides a playback device where playback can be achieved without mixing the simple control region with the control region for the audio and general data and, by also recording copy-protection information at the simple control region, a playback operation from a recording medium which has been copied illegally will not be possible.The present invention further relates to a recording device a recording device for updating each control region while data updating is being carried out at the recording medium.

Abstract: A recording medium has a user recordable area in which two types of information may be recorded, such as audio data and user data, and a control area having a first area for management information regarding the first type of information and a second area for management information regarding the second type of information. A reproducing apparatus uses the first management information to reproduce the first type of information and to avoid reproducing the second type of information as the first type of information, and uses the second management information to reproduce the second type of information and to avoid reproducing the first type of information as the second type of information. A recording apparatus generates the first management information when the first type of information is recorded and generates the second management information when the second type of information is recorded.

Abstract: In a magneto-optical recording apparatus wherein a beam of light is irradiated upon a face of a recording medium while a magnetic field is applied to the other face of the recording medium at a location where the light beam is irradiated, production of control pulses for controlling the magnetic head so as to prevent, upon high speed recording, the magnetic head from being turned on before a terminal voltage of the magnetic head drops sufficiently to a predetermined power source voltage because the transfer rate of a recording signal is high and the reversal interval of the recording signal is short.

Abstract: A recording medium has a user recordable area in which two types of information may be recorded, such as audio data and user data, and a control area having a first area for management information regarding the first type of information and a second area for management information regarding the second type of information. A reproducing apparatus uses the first management information to reproduce the first type of information and to avoid reproducing the second type of information as the first type of information, and uses the second management information to reproduce the second type of information and to avoid reproducing the first type of information as the second type of information. A recording apparatus generates the first management information when the first type of information is recorded and generates the second management information when the second type of information is recorded.

Abstract: The present invention relates to a recording medium recorded with audio data and general data (including image data for computers and character data) mixed together, provided with data for each control region, where by providing a special simple control region, editing of complicated control regions does not have to be carried out and a memory region is not necessary as a working region for editing.The present invention also provides a playback device where playback can be achieved without mixing the simple control region with the control region for the audio and general data and, by also recording copy-protection information at the simple control region, a playback operation from a recording medium which has been copied illegally will not be possible.The present invention further relates to a recording device for updating each control region while data updating is being carried out at the recording medium.

Abstract: A recording medium has a user recordable area in which two types of information may be recorded, such as audio data and user data, and a control area having a first area for management information regarding the first type of information and a second area for management information regarding the second type of information. A reproducing apparatus uses the first management information to reproduce the first type of information and to avoid reproducing the second type of information as the first type of information, and uses the second management information to reproduce the second type of information and to avoid reproducing the first type of information as the second type of information. A recording apparatus generates the first management information when the first type of information is recorded and generates the second management information when the second type of information is recorded.

Abstract: In a magneto-optical recording apparatus wherein a beam of light is irradiated upon a face of a recording medium while a magnetic field is applied to the other face of the recording medium at a location where the light beam is irradiated, production of control pulses for controlling the magnetic head is controlled so as to prevent, upon high speed recording, the magnetic head from being turned on before a terminal voltage of the magnetic head drops sufficiently to a predetermined power source voltage because the transfer rate of a recording signal is high and the reversal interval of the recording signal is short.

Abstract: A magneto-optical disc having an optical-magnetic recording layer, formed on the surface of a transparent base plate opposite its beam incident surface is disclosed, wherein a layer excellent in lubriciousness is formed in superimposition on the optical-magnetic recording layer to enable the magnetic head to be in direct sliding contact with the disc surface to provide for stable recording and improved recording performance as well as to reduce adverse effects caused by deposition of foreign matter such as dust and dirt.

Abstract: A reproduction apparatus which can perform error correction decoding processing which allows data at a linking portion of linking recording to be regenerated as much as possible to restrict the invalid data area at the linking portion to a necessary minimum magnitude is disclosed. The production apparatus reproduces a recording medium on which data coded in two or more different series by error correction coding are linking-recorded such that they are recorded at continuous positions at discontinuous points of time and comprises linking position detection means for detecting a linking portion of linking-recording, wrong correction detection means for detecting wrong correction based on the error correction code, and means for rendering the wrong correction detection means inoperative at the linking portion detected by the linking position detection means.

Abstract: A magnetic head driving circuit for driving a magnetic head device adapted for recording information signals on a magneto-optical disc by applying a magnetic field to the magneto-optical disc is disclosed. The magnetic head driving circuit includes a pair of switching elements for performing a push-pull operation in accordance with input recording signals, a pair of rectifiers connected in series with each other between the switching elements, a magnetic field generating coil having one terminal connected to a junction line between the rectifying elements via a coupling capacitance and having its other terminal grounded. The magnetic field generating coil generates a magnetic field by being supplied with a driving current corresponding to the recording signals. An amplifier capacitor is connected in parallel with the magnetic field generating coil in an ac path for amplifying the driving current supplied to the magnetic field generating coil.

Abstract: An optical head applies a laser beam to a region of the magnetooptical disc, and a magnetic head applies a magnetic field to the region of the magnetooptical disc while the laser beam is being applied thereto, thereby to record information in the region. The optical and magnetic heads are interconnected by a link mechanism so that they are movable in unison with each other radially with respect to the magnetooptical disc. An electromagnetic shield is disposed around the magnetic head for blocking magnetic and electric fields parallel to the magnetooptical disc.

Abstract: A disc recording apparatus in which continuous recording data is subdivided and recorded in plural recording zones of the disc in the subdivided state, is disclosed, A system controller controls the recording position and the reproducing position of the recording data with respect to data zones of a recording/reproducing region of a magneto-optical disc. The continuous recording data are subdivided for recording in plural data recording zones, while track number data indicating the continuous recording data recorded in the data zones, address data indicating the positions of the data zones and address data indicating the linking destination for one to another data zone, are recorded in a lead-in region of the recording/reproducing region under control of the system controller. A disc reproducing apparatus fop reproducing the recorded data recorded by the disc recording apparatus and a disc-shaped recording medium used in the disc recording apparatus and in the disc reproducing apparatus are also disclosed.

Abstract: This invention relates to a recording sheet for an ink jet printer comprising fibrous base material and a back-coating layer formed on the back surface of the base material, which characterized by that the base material contains a cationic polymer size (a), and the back-coating layer comprises a pigment, a binder and two or more of sizes (b1) and (b2), said size (b1) being alkyl ketene dimer, alkenyl succinic anhydride, or wax emulsion, and said size (b2) being a cationic polymer.

Abstract: A process for producing a 2,2-difluoropropane of the following formula (2), which comprises fluorinating a chlorine-containing 2,2-halogenopropane of the following formula (1) by hydrogen fluoride or a fluorinating agent:C.sub.3 H.sub.a Cl.sub.b F.sub.c (1)C.sub.3 H.sub.a Cl.sub.b-x F.sub.c+x (2)wherein a, b, c and x are integers satisfying the following conditions:a.gtoreq.0, b.gtoreq.1, c.gtoreq.0, x.gtoreq.1, a+b+c=8.

Abstract: A burner comprises at least one swirl member for mixing a fuel with an air previously to burning of the fuel, and at least one eddy generating device which is arranged in a flow of a mixture of the fuel and air to generate an eddy flow in the flow so that the eddy flow maintains a shape of a flame of the burned fuel. The at least one eddy generating device is arranged apart from a downstream end of the swirl member by a fixed sufficient distance so that the shape of the flame maintained by the eddy flow is prevented from moving toward the downstream end of the swirler member.

Abstract: A combustor includes a first premixture supply device provided in a central portion of a combustion chamber disposed generally concentric with a combustion cylinder, and a second premixture supply means provided adjacent to an outer periphery of the first premixture supply device. The first premixture supply device is operable when the combustor is under a high load, and the second premixture supply device is operable when the combustor is under a low load. A method of operating a combustor is also proposed wherein the combustor comprises a combustion cylinder having a combustion chamber therein and a premixture supply device provided on one side of the combustion cylinder for supplying a combustible mixture to the combustion chamber. The premixture supply device comprising at least two inner and outer premixture supply devices.

Abstract: A gas turbine combustor including a first-stage combustion chamber being arranged to serve as a premix chamber for a second-stage combustion chamber and an auxiliary burner provided in the first-stage combustion chamber and arranged to effect, when fired, combustion and holding of a flame in the first-stage combustion chamber and to effect, when extinguished, feed a flame from the first-stage combustion chamber to the second-stage combustion chamber.

Abstract: A combustor for driving a gas turbine includes a first burning stage and a second burning stage. The combustor further comprises a primary combustion chamber in which air from the associated compressor and fuel are burnt, a pre-mixing chamber in which air from the associated compressor and fuel are pre-mixed, a main combustion chamber in which fuel/air mixture is burnt and forwarded to the gas turbine, an air passage provided in a wall of the main combustion chamber, through which air from the compressor flows to cool the wall thereof, and an intercommunicating air passage for intercommunicating the air passage to the pre-mixing chamber, whereby cooling air for the main combustion chamber wall is used to supplement the air in the pre-mixing chamber.

Abstract: In a fluorescent lamp, an elongated envelope containing, e.g., an Argon gas is sealed by covering each end with a stem. Through this stem, a pair of leading-in wires are introduced into the interior of the envelope, such that those portions of the leading-in wires which are located inside the envelope constitute internal wire portions. A filament coil, which has an emitter coated thereon in a predetermined range, is supported between the internal wire portions. An auxiliary anode, which is connected at one end to each internal wire portion, extends inside the envelope in the discharge direction of the fluorescent lamp. The auxiliary anode is bent such that its distal end is located within the emitter-coated range, as viewed in the longitudinal direction of the filament coil, and is located close to the central axis of the discharge space, as viewed in the radial direction of the filament coil.

Abstract: A magneto-optical disc recording apparatus arranged such that the magneto-optical disc is recorded by irradiating the magneto-optical disc with a recording light beam from an optical pickup head device under the condition that the optical pickup head device is applied with an external magnetic field by external magnetic field generating means. In this magneto-optical disc recording apparatus, a spacer sheet is located on the magneto-optical disc, whereby the external magnetic field is applied to the magneto-optical disc under the condition that the external magnetic field generating means is brought in contact with the spacer sheet.