摘要:
A recording and playback device having a recording and playback controller that determines a temperature of a recording and playback medium. The controller determines the temperature by finding a recording light intensity at which a duty ratio of a playback light signal matches a duty ratio of the data to be recorded and estimating the temperature based on the recording light intensity. The controller may also determine the temperature by measuring the temperature with a temperature sensor. Based on the temperature, the recording and playback device calculates a playback light intensity at which a temperature distribution remains constant in a portion of the recording and playback medium illuminated by a playback light having the playback light intensity when the temperature of the recording and playback medium changes. The recording and playback controller also adjusts the playback light intensity based on a linear velocity of the recording and playback medium.
摘要:
A pneumatic radial tire capable of effectively controlling the occurrence of wandering phenomenon when being used in vehicles such as passenger car, small-size truck, truck, bus and the like is provided, in which a second tread zone contacting with a mountain side of a slant road surface is arranged so as to project toward a side of a first tread zone contacting with a flat road surface and camber thrust of the radial tire is increased by the second tread zone during the running on ruts and the like under loading.
摘要:
A camera is capable of both silver-halide shooting, through which object images are recorded on silver-halide film, and video shooting, although its distance measurement device is placed substantially in the same way and its mirror box has substantially the same size as in ordinary single-lens reflex cameras. In this camera, a pellicle mirror splits the light flux having passed through a taking lens into a first light flux and a second light flux, and a rotatable mirror switches the subsequent path of the second light flux between the optical path for a third light flux and the optical path for a fourth light flux. The pellicle mirror, through its light flux splitting function, directs the first light flux to a silver-halide shooting system, and directs the second light flux to the rotatable mirror. The rotatable mirror, through its optical path switching function, either directs the third light flux to an optical viewfinder system, or directs the fourth light flux to a video shooting system.
摘要:
The data containing reference data is transformed into signature data by a method which depends on a variable generated by the reference data, and the identification data is certified by inverse transformation of the signature data. The signature generating rule changes in dependence on the reference data, and it is therefore extremely difficult to analyze the signature generating rule from the medium or the card reader/writer so that the forgery or modification of magnetic or other data, which is otherwise easy to duplicate, can be made extremely difficult. Therefore, even when a reader is illicitly obtained, and analyzed, it is extremely difficult to estimate the signature generating rule as it owes to the difficulty of solving a set of multivariate simultaneous equations.
摘要:
The current invention is directed to an optical storage medium system and a method for adjusting an electrically converted optical signal representing the stored data based upon the environmental or optical disk temperature and/or a heat characteristics of the optical disk.
摘要:
A pneumatic radial tire capable of effectively controlling the occurrence of wandering phenomenon when being used in vehicles such as passenger car, small-size truck, truck, bus and the like is provided, in which a second tread zone contacting with a mountain side of a slant road surface is arranged so as to project toward a side of a first tread zone contacting with a flat road surface and camber thrust of the radial tire is increased by the second tread zone during the running on ruts and the like under loading.
摘要:
A magnetic recording medium is produced by coating a body having (a) a non-magnetic substrate, (b) at least one magnetic substance layer formed on the non-magnetic substrate and (c) at least one protective layer formed on the magnetic substance layer which contains at least one member selected from the group consisting of inorganic oxides, graphite and amorphous allotropes of carbon, with a solid surface modifier containing (i) an ammonium carboxylate type fluorine-containing compound having the formula, (R.sub.f --COO.sup.- H.sup.+).sub.n --R, wherein R.sub.f is a perfluoropolyoxyalkyl chain having a number average molecular weight of at least 800, n is a number of 1-2, and R is a residue selected from the group consisting of an aromatic ammonium which may have one or more substituents at the nucleus, benzylammonium which may have one or more substituents at the nucleus, dibenzylammonium which may have one or more substituents at the nucleus, tribenzylammonium which may have one or more substituents at the nucleus and an aromatic inium which may have one or more substituents at the nucleus, and (ii) an alcohol or fluorine-containing solvent and optionally water, on the surface of the protective layer (c), to form a coat, and then removing the solvent, or alcohol and water from the coat.
摘要:
A magnetic recording medium is produced by coating a body having (a) a non-magnetic substrate, (b) at least one magnetic substance layer formed on the non-magnetic substrate and (c) at least one protective layer formed on the magnetic substance layer which contains at least one member selected from the group consisting of inorganic oxides, graphite and amorphous allotropes of carbon, with a solid surface modifier containing (i) an ammonium carboxylate type fluorine-containing compound having the formula,(R.sub.f --COO.sup.- H.sup.+).sub.n --R,wherein R.sub.f is a perfluoropolyoxyalkyl chain having a number average molecular weight of at least 800, n is a number of 1-2, and R is a residue selected from the group consisting of an aromatic ammonium which may have one or more substituents at the nucleus, benzylammonium which may have one or more substituents at the nucleus, dibenzylammonium which may have one or more substituents at the nucleus, tribenzylammonium which may have one or more substituents at the nucleus and an aromatic inium which may have one or more substituents at the nucleus, and (ii) an alcohol or fluorine-containing solvent and optionally water, on the surface of the protective layer (c), to form a coat, and then removing the solvent, or alcohol and water from the coat.
摘要:
A subscriber transmission system, which in addition to receiving conventional telephone channels also provides an ISDN service, includes an ISDN switch, a first subscriber transmission equipment connected to the ISDN switch, multiple subscriber terminals, multiple network terminals corresponding to the multiple subscriber terminals, and a second subscriber transmission equipment coupled via a transmission path to the first subscriber transmission equipment. The second subscriber transmission equipment is also connected to the multiple network terminals. Each of the first and second subscriber transmission equipments has a DSO cross connect function and a function of terminating a physical layer path of the P-ISDN and also allocates a plurality of DSO signals used by the P-ISDN, to the transmission path.