Abstract:
A recording device (1) for recording digital recording data (AD) in a recording mode of the recording device (1) comprises data bus means (10) to which a digital data bus (9) can be connected and which are designed for receiving input data (ED1-ED9) transmitted in at least a first input channel (C1(STB), C5(TV), C20(DV), C25(DV), C33(PC), C34(PC)) of the data bus (9). Received input data (ED1-ED9) can be processed by processing means (16) and be recorded as recording data (AD) on a data carrier (18) by recording means (17) of the recording device (1). The recording device (1) further comprises test means (20) for testing whether input data (ED1-ED9) are received in the first input channel (C1(STB), C5(TV), C20(DV), C25(DV), C33(PC), C34(PC)). Furthermore, a record-prepared mode can be activated in the recording device (1), and the test means (20), with the record-prepared mode being activated, are designed for activating the recording mode for recording input data (ED1-ED9) received in the first and/or in at least one second input channel (C1(STB), C5(TV), C20(DV), C25(DV), C33(PC), C34(PC)) as recording data (AD) for the duration of reception of input data (ED1-ED9) in the first input channel (C1(STB), C5(TV), C20(DV), C25(DV), C33(PC), C34(PC)).
Abstract:
A video tape player (1) monitors the selection habits of a viewer selecting from a plurality of video tapes. Each video tape (42) contains a plurality of programs. A first type of video tape has a title information symbol contained in a predetermined interval of the tape, e.g. the vertical blanking interval, for each program on the tape. A clock (31a) provides the time of occurence of commands. A detector (30) receives user inputted commands for controlling the movement of the video tape (42) such as play, record, stop. The user inputted commands comprise a start play command to start moving, in a longitudinal direction, the video tape (42) proximate to a magnetic head so that the magnetic head can detect said programs on the video tape (42) and a stop command to stop moving the tape. A controller (21) is coupled to said detector (30) for commanding the motor in response to said detected user inputted commands and for reading the time of occurence of said detected user inputted commands.
Abstract:
An optical scanning device can scan two types of record carriers each having a transparent layer with a different thickness, in which a radiation beam scans an information layer of the record carrier through the transparent layer. When scanning a first type of record carrier the best focus of a scanning radiation beam is positioned on the information layer and when scanning a second type of record carrier the paraxial focus of the radiation beam is positioned on the information layer.
Abstract:
A signal recording apparatus wherein, when an input signal is recorded reciprocatingly on a recording medium (6) in such a manner that, after a recording head (5) and the recording medium (6) have moved relative to each other in one direction (the "first direction"), they move in the opposite direction (the "second direction"), the input signal is delivered to the recording head (5) through a delay element (3), and a signal delay quantity in the relative movement of the recording head (5) and the recording medium (6) in the second direction is set so as to be larger than the signal delay quantity in the movement thereof in the first direction, and the difference between these delay quantities is set so as to be longer than the time required for a movement reversal. Also disclosed is a signal recording and reproducing apparatus which is provided with means for delaying a reproduction signal from a reproducing head when a signal recorded on the recording medium (6) by this signal recording apparatus is reciprocatingly reproduced, and in which a reproduction signal delay quantity before the movement reversal is set so as to be larger than the reproduction signal delay quantity after the movement reversal in order to prevent the omission of any signal during the movement reversal, thereby obtaining temporarily-continuous signals. The signal recording apparatus is also provided with a signal recording apparatus which records a reversal mark in the vicinity of the movement reversal position on the recording medium (6). The signal recording and reproducing apparatus is also able to reciprocatingly record on the recording medium (6) an input signal and an address corresponding to the input signal, and read out, in reproduction in the first direction, both addresses recorded in the first and second directions, and compare the two addresses to determine the position at which the movement is reversed from reproduction in the first direction to reproduction in the second direction.
Abstract:
A read-after-write head (100) for four channel azimuth recording in one mode of operation and two channel non-azimuth recording in another mode of operation. Four forward write head gaps (104, 106, 108, 110), four read head gaps (120, 122, 124, 126), and four backward write head gaps (112, 114, 116, 118) are geometrically positioned within a rotatable and laterally indexable face plate (102) of a recording head housing. The read and write head gaps collectively provide four forward write channels, four read channels, and four backward write channels. During the azimuth mode of operation, the head is rotated to the preselected positive or negative azimuth angle and all of the read and write channels are utilized. During the non-azimuth, or vertical, mode of operation, write channels two and four are used in combination with read channels one and three to provide two channel non-azimuth, or vertical, operation.
Abstract:
A recording and/or reproduction apparatus for effecting recording and/or reproduction of information signals by moving a recording and/or reproduction head and a recording medium relatively to each other in a first direction and a second direction opposite to the first direction. When signals are recorded on the recording medium by driving the recording and/or reproduction head and the recording medium relatively in the first direction and the second direction opposite to the second direction, this recording and/or reproduction apparatus determines a total recording time of the signals recorded on the recording medium, records reversion command signal on the recording medium when about 1/2 of the total recording time passes by, reverses the relative directions of the recording medium and the recording and/or reproduction head, and records the signals on the recording medium by the recording and/or reproduction head. In this way, the apparatus can serially record and reproduce the information in a desired unit or a series of musical tones continuously while reversing the direction of the recording medium.
Abstract:
A system for effecting automatic program track searching functions for a digital compact cassette (DCC) tape operating in a playback deck. Facilities enable the automatic searching utilizing envelope detection of variable pulse width signals indicative of specific markers contained on the tape's auxiliary data track. Detection of the specific markers is utilized in the deck to control the movement of the tape relative to a tape head in stop/play and high-speed search modes of operation, in both forward and reverse directions, to locate desired program track selections. The facilities enable searching across both sectors of the tape, in a single automatic search operation. Searching is user-initiated from a front control panel of the deck by a serial front panel processor interfacing with a main control processor. A digital signal processor of the deck detects low-frequency envelopes or "markers" on the tape used in controlling record and playback functions. The facilities are implemented by program logic executed in a main control processor of the deck.
Abstract:
A directory of programs recorded on a cassette tape is provided to facilitate recording and reviewing of the programs and allocating and deallocating of space on the tape. The directory is either stored on the cassette tape itself or on an external memory. Designs of the various components for providing and maintaining the directory are also disclosed.
Abstract:
Improvement to the utilization of tape recorders, allowing by the speech action the automatic start and stop of such apparatus. The device uses the existing output plug of a cassette recorder, without introducing any modification whatsoever in the apparatus. It comprises a transistor amplifier (TR1, TR2, TR3) of which the input receives the modulation from a microphone (M); the output signals of the amplifier after detection by the diode (D1), command a flip-flop to a stable state comprised by an integrated circuit C MOS which provides a positive pulse controlling an electronic switch (TR4) triggering the automatic start-stop. Amongst the most interesting applications, are conference recordings, letter dictations, surveillance of premises, language studies, preparation to take the floor, without manipulating the manual control start-stop of the apparatus.
Abstract:
A recorder comprises a tuner (2) for receiving a television broadcasting signal, an XDS signal extracting circuit (4) for extracting an XDS signal from the received television signal, a VCR mechanism (6) for recording a video signal on a magnetic tape, and a control circuit (5). The control circuit (5) starts recording at a standard speed, calculates the broadcasting remaining time until the broadcasting of the program being recorded ends on the basis of broadcasting time information and broadcasting elapsed time information, calculates the recordable time when the program is recorded at the triple speed on the magnetic tape, changes the recording speed to the triple speed when the broadcasting remaining time agrees with the recording recordable time, and continues the recording at the triple speed.