摘要:
A telephone answering machine utilizing either a single magnetic tape containing alternating announcement and message sections, or separate announcement and message tapes. The tape or tapes have permanently affixed magnetic foil sections which are set to provide control signals for the various timing functions performed within the machine. The foil sections on the tape(s) switch the machine between record and playback functions, control the tape transport(s), and control the commencement and duration of the "beep" tone which follows the outgoing announcement.
摘要:
A sound recording and reproducing apparatus utilizing replaceable magnetic tape cassettes. The sound recording and reproducing apparatus includes an arrangement for the detection of a specified position of the tape utilizing a light detection unit which is installed in the apparatus. The light detection unit consists of a light emitting device together with a light receiving device. The casing of the cassette includes a reflective portion thereon which is placed in reflective alignment between the light emitting device and the light receiving device. Light can only be transmitted between the light emitting device and the light receiving device once a specified position of the tape is achieved.
摘要:
A CD-ROM is provided with an area for forming a character/graphic pattern. The character/graphic pattern is formed in such a way that data, which generate on the CD-ROM two sorts of pit patterns having average reflectances different from each other to a perceptible extent, are respectively recorded inside and outside the character/graphic pattern. Unless an illegal copy disc is produced by duplicating the legal original disc of the CD-ROM at a very high precision, the character/graphic pattern of the copy disc is invisibly deformed by the discrepancy between the arrangements of the pit patterns of the copy disc and the original disc.
摘要:
A display apparatus connected to a recording medium cassette having a recording medium, a cassette case for accommodating the recording medium, a storage device for storing recording information recorded on the recording medium and information about the cassette itself, and a plurality of terminals for connecting the storage device to external equipment. This display apparatus comprises a loading portion for loading the recording medium cassette, a connector provided on the loading portion to be connected with the plurality of terminals, a reading device for reading the information from the storage device through the connector, and a display device for displaying the information read by the reading device. Simply connecting the plurality of terminals of the recording medium cassette to the connector of the recording/reproducing apparatus allows display of the recording information about the recording medium cassette, thus providing recorded contents of the recording medium cassette quickly and easily as well as facilitating retrieval and management of the recorded contents.
摘要:
An information processing apparatus including a recording medium, a magnetic material having a predetermined magnetization pattern with respect to the recording medium, a first device for detecting the magnetization pattern of the magnetic material, a second device for detecting a change of the recording medium and a third device for driving the recording medium and the second device relative to each other, based on a signal from the first device.
摘要:
A removable container holds a plurality of video disks each storing prerecorded video pictures that are played back in a multi-disk video player. The container includes a magazine for storing the disks and a non-volatile, erasable memory supported adjacent the magazine between guide rails formed on one side of the magazine. The memory is locked in place on the rails when the container is outside the player by a movable locking key that is biased into a locking slot in the magazine. When the container is inserted into the player, the locking key is displaced out of the slot; the memory is detached from the magazine and connected into the player circuit, thus permitting movement of the magazine without disturbing transfer of data to and from the immobilized memory.
摘要:
A method of safeguarding against the re-transfer of uniquely recorded information on a data carrier (1) includes the recording of the information data and in addition thereto a simultaneously recording of an additional information on the data carrier (1) which reflects co-ordination characteristics relative to the data carrier. In order to carry out the method an apparatus is provided for recording and/or reading a re-transfer protected information on a data carrier (1) with a recording and/or reading device (4). The apparatus comprises a device (13) for detecting measurable properties (3) which are present at singular points of the data carrier (1) and for producing an additional information characterizing such properties.
摘要:
A multi-track magnetic recording tape and a corresponding method for providing an early warning of end-of-tape conditions and an indication of load-point conditions, without the use of inter-track markers. The recording tracks are divided into two sets located on separate halves of the tape, and the sets of tracks are longitudinally offset with respect to each other, to provide a half-width unrecordable region at each end of the tape. A tape marker is located in each of the unrecordable regions, each marker serving as a load-point marker for use with one set of tracks, and as an early-warning marker for use with the other set of tracks.
摘要:
Improved reflective sense marker less than 2.5 micrometers in thickness including (a) a reflective thin-film metal coating, (b) a thin layer of adhesive bonding the thin-film coating to the back side of a magnetic recording tape, and (c) a thin, tough, abrasion-resistant transparent polymeric protective layer such as a copolymer of ethylene and vinyl acetate covering the thin-film coating.