摘要:
A battery container is provided with a battery cover having side walls so that a gap is formed between the side walls of the container and the side walls of the cover. The upper end portion of a bottomed heat-shielding case is inserted into this gap so that the heat-shielding case is detachably attached to the battery container and covers the container and forms a space between the container and the case. The space between the container and case is closed to air outside the case and air convection between the outside air and the air inside the space can be prevented thereby increasing the heat-shielding effect for protecting the storage battery from high temperatures. Additionally, the heat-shielding case is designed to be attached securely to the battery container (1) to make one body therewith, making it easier to mount and dismount them in an automobile engine compartment.
摘要:
A signal reproduction and method therefore device for a digital signal reproduction apparatus, which reproduces digital signals recorded on a recording medium with a reproduction head. The device includes a first memory circuit which sequentially stores digital signals reproduced by the reproduction head, a circuit which identifies the attribute of a reproduced digital signal and a write control circuit which judges, based on the result of the identification provided by the identification circuit, whether digital signals of a prescribed unit length included among digital signals stored in the first memory have the same attribute, and produces a write signal in response to the judgment. Also provided is a second memory which is connected to the first memory and stores the digital signals which have the prescribed length and are judged to have the same attribute in response to the write signal.
摘要:
A VTR incorporating a video printing controller comprising at least one rotary magnetic head for scanning recording tracks formed on a magnetic tape to reproduce a video signal recorded on a recording track specified by a marker signal, a marker signal detector for detecting the marker signal specifying the recording track carrying the video signal to be printed, and a system controller connected to the marker signal detector and to a video printer connected to the VTR. The system controller gives a video printer control signal to the video printer upon receipt of a marker signal detection signal from the marker signal detector to control the video printer for printing out in a hard copy the video image reproduced from the recording track specified by the marker signal. Thus, the recording track storing the video image desired to be printed is located automatically by searching the recording tracks for the marker signal, and then the desired video signal is printed out automatically.
摘要:
An apparatus for recording an information signal on a track scanned by a rotary head on a record medium in which the track is divided into a plurality of areas. A pilot signal for tracking is recorded in a predetermined area on the track. A circuit is provided for reproducing the pilot signal for tracking from the predetermined area. Also, a circuit for recording the information signal on the track and a circuit for controlling the tracking of the rotary head by the predetermined pilot signal are provided.
摘要:
In an apparatus for recording and/or reproducing, in successive slant tracks on a record tape, an information signal comprised of at least an audio signal and an index signal for use in controlling transportation of the tape; the input audio signal is converted to a digitized form in which the audio data for a predetermined length of time is grouped as a plurality of data blocks which are recorded by a rotary head in a first part of a respective slant track on the tape, an index signal generator provides a coded index signal to indicate respective input information, such as, an absolute tape-position address counted from a predetermined reference position on the record tape, an index area signal is generated in predetermined timed relation to scanning by the rotary head of said first part of each slant track, and a control is responsive to the index area signal for supplying the coded index signal to a rotary head for recording by the latter in a second part of said respective slant track which is located adjacent an end of said first part of the respective slant track.
摘要:
In a helical scan apparatus having a rotary head or heads for recording and/or reproducing video and audio signals in oblique tracks on a magnetic tape with the recorded audio signals being recorded in overscan areas of the oblique tracks and with the pitch of the tracks being different as a result of changes in the tape speed for different recording modes; index signals are recorded by the rotary head or heads at predetermined positions in the overscan areas of a plurality of the oblique tracks for a period of time dependent upon the recording mode previously used for recording the video and audio signals. Therefore, in a program search operation employing high speed playback, the index signals can be extracted from the output of the rotary head or heads for identifying a respective program or event irrespective of the recording mode with which the video and audio signals were recorded.
摘要:
Apparatus for recording and reproducing an information signal comprising at least an analog audio signal in a plurality of successive tracks on a magnetic tape includes a PCM processing circuit for converting an analog audio signal into a PCM audio signal; a video signal processing circuit for processing a video signal to produce an output video signal; a rotary magnetic head assembly for recording the output video signal and the PCM audio signal in the plurality of successive tracks on the tape; a switch assembly for supplying the output video signal and the PCM audio signal to the rotary magnetic head assembly; and a control circuit for controlling the switch assembly to supply the output video signal and the PCM audio signal to the rotary magnetic head assembly during a video use mode so that the latter records the output video signal in a main section of each track and to supply only the PCM audio signal to the rotary magnetic head assembly during an audio use mode so that the latter records the PCM audio signal in different segments of the main section and overscan section of each track.
摘要:
A reproducing section of a helical scan VTR for reproducing a color television signal recorded in a plurality of successive parallel tracks on a magnetic tape and comprised of a video signal and at least one of a frequency-modulated audio signal and the combination of a PCM audio signal and run-in signal, with the video signal and frequency-modulated audio signal being recorded only in a main section of each track and the PCM audio signal being recorded only in an overscan section of each track, the VTR including a pair of magnetic heads which scan the tracks to reproduce the information signal recorded therein; a pair of switch circuits connected to the heads and which separate the information signal reproduced during scanning of the main section of each track and a signal reproduced during scanning of the overscan section of each track; a detector which detects the presence or absence of a run-in signal from the separated signal reproduced during scanning of the overscan section of each track and produces a detection signal in response thereto; an output; and a switch for switching an analog audio signal reproduced from the PCM audio signal to the output in response to the detection signal when a run-in signal is detected and an analog audio signal reproduced from the frequency-modulated audio signal to the output in response to the detection signal when no run-in signal is detected.
摘要:
A phase servo circuit for controlling a rotatable magnetic head which is used for recording and/or reproducing a television signal includes a pulse generator for producing a pulse signal synchronous with the rotating phase of the rotatable magnetic head, a phase difference detecting circuit for generating a control signal which is used for controlling the rotating phase of the rotatable magnetic head, the control signal having a pulse width modulated in response to the phase difference between the pulse signal and the vertical synchronizing signal of a television signal to be recorded, another circuit for detecting the phase difference between the aforementioned vertical synchronizing signal and a second vertical synchronizing signal of a reproduced television signal and a modulating circuit for modulating the pulse width of the control signal in response to the output of the phase difference detecting circuit, whereby the phase angle of the first-mentioned and second vertical synchronizing signals are in synchronization with each other on a magnetic tape in order to carry out tape editing operation.
摘要:
A digital servo control system for controlling a drive motor accumulates speed and phase error numbers and produces a pulse width modulated signal in response thereto. Phase errors are measured by counting pulses of a clock signal between the arrival of a position signal related to a rotational position of the drive motor and the arrival of a reference signal. An automatic residual error compensating circuit controls a delay applied to the position signal in accordance with residual phase error to minimize the same.