Abstract: It is an object of the present invention is to provide an apparatus for discriminating an optical recording medium and a method for discriminating an optical recording medium which can reliably discriminate the kind of an optical recording medium even in the case where the optical recording medium to be discriminated is formed with periodical undulation in the circumferential direction thereof. The apparatus for discriminating an optical recording medium according to the present invention includes a first electrode 11, a second electrode 12, an alternate current signal generation circuit 13 for applying an alternate current A to the first electrode 11, a detection circuit 14 for detecting a level of an alternate current B appearing at the second electrode 12, and a control circuit 15 for controlling the operations of the alternate current signal generation circuit 13 and the detection circuit 14.

Abstract: An acoustic equipment has a columnar magnetostrictor 51, a drive coil 54, and a vibration transmitter 55. The columnar magnetostrictor 51 has one end where a partition 22 (stopper) is disposed to define the one end as a fixed end, and has the other end defined as a free end to allow the magnetostrictor 51 to expand and contract along an axial direction; the drive coil 54 is arranged to generate a magnetic field to expand and contract the columnar magnetostrictor 51 by a drive current based on an acoustic signal; the vibration transmitter 55 is disposed on the other end side of the columnar magnetostrictor 51 and is arranged to transmit vibration caused by expansion and contraction of the columnar magnetostrictor 51, to a plate 7; sponges 53a, 53b as elastic members are disposed between the partition 22 and the vibration transmitter 55 in the direction of the vibration.

Abstract: The present invention provides a method and an apparatus for discriminating the type of an optical recording medium and the number of recording layers in the medium. The apparatus includes a first electrode and a second electrode placed in the vicinity of a light transmission layer of the recording medium, an alternating current signal generation circuit for applying an alternating current A to the first electrode, a detection circuit for detecting the level of an alternating current B appearing at the second electrode, and a control circuit for controlling the operations of the alternating current signal generation circuit and the detection circuit, and a table provided in the control circuit.

Abstract: It is an object of the present invention to provide an apparatus for discriminating an optical recording medium which can reliably discriminate the kind of an optical recording medium even in the case where the optical recording medium to be discriminated is warped and formed with periodical undulation in the circumferential direction thereof.

Abstract: It is an object of the present invention to provide an apparatus for discriminating an optical recording medium and a method for discriminating an optical recording medium which can reliably discriminate the kind of an optical recording medium even in the case where the optical recording medium to be discriminated is warped.

Abstract: It is an object of the present invention is to provide an apparatus for discriminating an optical recording medium and a method for discriminating an optical recording medium which can reliably discriminate the kind of an optical recording medium even in the case where the optical recording medium to be discriminated is formed with periodical undulation in the circumferential direction thereof. The apparatus for discriminating an optical recording medium according to the present invention includes a first electrode 11, a second electrode 12, an alternate current signal generation circuit 13 for applying an alternate current A to the first electrode 11, a detection circuit 14 for detecting a level of an alternate current B appearing at the second electrode 12, and a control circuit 15 for controlling the operations of the alternate current signal generation circuit 13 and the detection circuit 14.

Abstract: It is an object of the present invention is to provide an apparatus for discriminating an optical recording medium and a method for discriminating an optical recording medium which can quickly discriminate the kind of an optical recording medium. The apparatus for discriminating an optical recording medium according to the present invention includes a first electrode and a second electrode, an alternating current signal generation circuit for applying an alternating current A to the first electrode, a detection circuit for detecting the level of an alternating current B appearing at the second electrode, and a control circuit for controlling the operations of the alternating current signal generation circuit and the detection circuit, and a table provided in the control circuit.

Abstract: It is an object of the present invention to provide an apparatus for discriminating an optical recording medium which can reliably discriminate the kind of an optical recording medium even in the case where the optical recording medium to be discriminated is warped and formed with periodical undulation in the circumferential direction thereof.

Abstract: It is an object of the present invention to provide an apparatus for discriminating an optical recording medium and a method for discriminating an optical recording medium which can reliably discriminate the kind of an optical recording medium even in the case where the optical recording medium to be discriminated is warped.

Abstract: This invention provides a URL management system and URL management server that is able to reduce the inconvenience that arises when the URL of a web site is changed. The system comprises a web site server 20 containing the content of a web site, a URL management server 30 that associates the URL of the web site with an intermediate URL corresponding thereto and a search server 40 that associates information regarding the content of the web site with the intermediate URL. The search server 40 sends out the intermediate URL in response to a request from a search based on the information, and the URL management server 30 converts the access destination to the URL of the web site in response to an access request made using the intermediate URL. Thereby, even in the case in which the URL of a web site is changed, there is no need to change the content registered in each search engine.

Abstract: A contents providing system is provided with a server which stores two or more contents files, a 1st terminal device which issues a recording medium recorded with download permission information for permitting download of at least one of the contents files is recorded and a 2nd terminal device which reads the download permission information from the recording medium and transmits it to the server. The server permits download of the corresponding contents file among the two or more contents files based on the download permission information transmitted from the 2nd terminal device.

Abstract: A record data recording method according to the invention is a method of recording record data (Dd) on a recording medium (OD) such as a removable optical disk. In recording the record data (Dd) on the recording medium (OD), device specification data [serial number data (Ds) concerning an associated recording/reproducing device (1) or authentication program data (Dps) including the serial number data (Ds)] for specifying a recording/reproducing device (1) permitted to read the record data (Dd) is recorded, and at the same time a determination program is recorded which is read out by a recording/reproducing device (1) before the record data (Dd) recorded on the recording medium (OD) is read, so as to determine identity between the recording/reproducing device (1) which read out the determination program and the recording/reproducing device (1) specified based on the device specification data.

Abstract: A digital recording/reproducing apparatus according to the present invention is configured to be capable of mounting a removable recording medium (M) therein, and includes a recording control section (10) for recording record data (DS) on the recording medium (M), and a reproducing control section (10) for carrying out reproduction based on the record data (DS) recorded on the recording medium (M). The digital recording/reproducing apparatus (1) comprises an index data generating section (4) for generating index data (DID) for detecting a cue position used to cue a predetermined recording position in the record data (DS) at a time of cue reproduction.

Abstract: A tape cassette capable of permitting a reel spring to be readily and accurately positioned on a casing for its mounting to highly improve workability and productivity in manufacturing of the tape cassette. The tape cassette includes a reel spring which is abutted against tape reels for elastically holding them. The reel spring comprises a spring body formed at an intermediate portion thereof in a longitudinal direction thereof with a plurality of mounting holes through which the reel spring is mounted on an inner surface of an upper casing member. The spring body is provided on each of both sides thereof in the longitudinal direction with one or two positioning recesses, each of which is positioned adjacent to each of the mounting holes.

Abstract: A cartridge for receiving therein a recording/reproducing medium has a casing having a label area in which a label is disposed. A transparent cover covers the label and is attached to the casing via a projection and a recess so as to be opened and closed.

Abstract: A tape cassette capable of ensuring smooth and positive traveling of a magnetic tape in a casing. Sheet elements each are formed with a pair of apertures aligned with hub holes and a strip-like projection projecting toward the inner surface of a casing, which is formed on each of the upper and lower inner surfaces thereof with a land of a width larger than the diameter of the hub hole in a manner to face the projection of the sheet element. The casing is also formed on each of the upper and lower inner surfaces thereof with a pair of recesses in a manner to interpose the land therebetween and the sheet elements each have a pair of end edges extending in the longitudinal direction thereof, which are arranged so as to overhang the recesses of the casing.

Abstract: A tape cassette comprises a cassette casing composed of upper and lower halves, wherein fixed tape guides each having a partially or completely cylindrical configuration are disposed along a tape transportation path defined within the casing. Each of the tape guides is secured fixedly by press-fitting it onto a continuous or discontinuous polygonal supporting rib dimensioned to be circumscribed by the tape guide.

Abstract: A magnetic tape cassette capable of highly improving workability and productivity in its manufacturing while ensuring its satisfactory function. The cassette includes a spring for constantly urging each of hub braking levers in a direction of engaging the lever with a reel hub to selectively lock the reel hub. The spring is formed so as to have a substantially straightly extending or flat shape when it is unloaded or in a free state and arranged in a casing in a manner to be constantly kept deflected by cooperation of an urging element and a support element each provided on the hub braking lever and a holding element provided on the casing and constantly abuttedly held at one end thereof on a contact element provided on the hub braking lever.

Abstract: Tape guides for a magnetic tape cassette comprise a half of cylindrical tube each adapted to fit securely over a support post within the housing of the cassette. The method of manufacturing the guides consists of forming thin-walled portions as grooves on at least the inner or outer side of a tube, with or without inwardly protruding ribs, which facilitate the division and provide a tight fit of the half piece to the post, and then dividing the tube along the plane into two halves. The tube is made of a metal, particularly brass or stainless steel, or plastics and formed by drawing or other irregular-shape forming technique, with polishing, plating, and/or precision polishing before division.