JP2966824B2 - Recording and playback device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording / reproducing apparatus such as an R-DAT and an 8 mm video tape recorder. 2. Description of the Related Art In a recently standardized R-DAT, a magnetic tape is wound around a rotating drum by about 90 degrees, and information is recorded and reproduced by a rotating head. The inclined track is roughly divided into three areas, a PCM audio signal is recorded in a central area P, and a predetermined subcode signal as a specific control signal is recorded in areas S1 and S2 on both sides thereof. For example, it is required by the standard to record a start ID signal at the beginning of each program for about 9 seconds (about 600 tracks) so that the start of the program can be found even during high-speed running as this subcode signal. It is also possible to record a skip ID for skipping a signal in a predetermined section without reproducing it as a subcode signal on a predetermined track for one second. The recording time of the start ID is 9 seconds, and the recording time of the skip ID is 1 second. When performing fast-forward and rewind operations, the recording time is shorter than the standard value, and if the reproduction is performed based on the control signal with the reduced recording time, there is a risk of malfunction or false detection. [0004] In order to solve the above-mentioned problems, the present invention provides a recording medium which stores main information and a specific control signal which is specified to be recorded in a predetermined length. Recording means for recording on the recording medium; command input means for outputting an operation command signal including a recording operation command signal indicating a recording operation of the specific control signal on the recording medium; and the specific control recorded on the recording medium. Reproducing means for reproducing a signal; detecting means for detecting the specific control signal from the reproduced signal reproduced by the reproducing means; and recording of the specific control signal on the recording medium based on the recording operation command signal A recording / reproducing apparatus comprising:
The control means, during the recording of the specific control signal on the recording medium based on the recording operation command signal, stops the recording operation of the specific control signal generated based on a predetermined command input operation in the command input means. By prohibiting, the specific control signal is recorded on the recording medium so as to be recorded with the predetermined length, and during reproduction of the recording medium, based on the result detected by the detection unit, The reproducing operation of the recording medium is controlled. According to the structure of the present invention, during recording of a specific control signal on a recording medium based on a recording operation command signal, the control means controls a specific command generated based on a predetermined command input operation on the command input means. By prohibiting the stop of the recording operation of the control signal, control is performed such that a specific control signal is recorded on the recording medium with a predetermined length, and the result detected by the detecting means during reproduction of the recording medium is used. The reproducing operation of the recording medium is controlled based on the recording medium. Therefore, even if a predetermined command input operation is performed during the recording of the specific control signal, the recording operation of the specific control signal is not stopped based on the input operation. Recorded by FIG. 1 is a block diagram of a magnetic recording / reproducing apparatus according to the present invention. In FIG. 1, reference numeral 1 denotes a magnetic tape, such as a capstan, a pinch roller, and a reel motor (not shown).
The vehicle is traveled by traveling means 2 including: Reference numeral 3 denotes a control unit including, for example, a microcomputer and the like.
A predetermined command input from input means 4 such as a keyboard is executed. Reference numerals 5 and 6 denote recording means and reproducing means for recording and reproducing signals on and from the magnetic tape 1, and include a rotary head which is switched at the time of recording and reproduction. 7 is a start ID signal as a cue signal and a skip as a skip signal
Generating means for generating an ID signal and the like, and 8 a detecting means for detecting the start ID signal and the skip ID signal from the reproduced signal. When the input means 4 is operated to input and instruct a reproduction mode, the control means 3 controls the traveling means 2 to cause the magnetic tape 1 to travel at a normal speed in the forward direction.
The reproducing means 6 reproduces the recording signal of the magnetic tape 1. When the input means 4 is operated at the beginning of a predetermined program while listening to the reproduced sound to input the recording of the start ID signal, the control means 3 controls the generating means 7 to generate the start ID signal. This signal is supplied to the recording means 5 and recorded on the magnetic tape 1. When the start ID signal is recorded for about 9 seconds (about 600 tracks), the control means 3 controls the generating means 7 to stop the recording operation of the start ID signal. The start ID signal is set by setting a predetermined bit in the subcode signal to logic 1. Thus, for example, as shown in FIG. 3, at the beginning of each program, the subcode areas S1 and S2 of a plurality of tracks (600 tracks) for 9 seconds are started.
An ID signal (A in the figure) is recorded. Even if the input means 4 is operated during this start ID signal recording operation and a command indicating reproduction, fast forward, and rewind is input, the control means 3 does not execute this command at least until the recording operation is completed.
In this case, the input during that time may be invalidated, or the input may be stored, and the operation may be executed after the recording operation is completed. By doing so, it is possible to prevent the recording time of the start ID signal from becoming shorter than 9 seconds. It is also possible to prevent all inputs from being received until the start ID signal recording operation is completed and completed. However, in such a case, there is a risk that the user may mistakenly recognize that the apparatus is out of order. Therefore, as shown in the flowchart of FIG. 2, when a key input is made from the input means 4, it is determined whether or not the input is a stop key, that is, an input indicating that the magnetic recording / reproducing apparatus of the present invention is stopped. In this case, the recording operation can be stopped even before 9 seconds have elapsed, and the magnetic recording / reproducing apparatus of the present invention can be shifted to a stopped state. This prevents the recording time of the start ID signal from being inadvertently reduced to less than 9 seconds and, for example, in the case of emergency use, the magnetic recording / reproducing apparatus of the present invention can be used. It can be stopped. Next, when a search is instructed from the input means 4, the control means 3 controls the running means 2 to cause the magnetic tape 1 to run at a high speed in a predetermined direction. At this time, the detecting means 8 detects the start ID from the reproduced signal output from the reproducing means 6. The detection signal is output to the control means 3. When the control means 3 counts the number of the detection signals by the number according to the command, the magnetic tape 1 stops running and searches for a desired program. The same applies to the case where the skip ID signal (B in FIG. 3) is recorded at a predetermined position in the program as shown in FIG. However, the recording time in this case is one second. When a skip ID is detected during reproduction of the recording signal, the control means 3 controls the reproduction means 6 to mute the reproduction sound until the next start ID is detected. As described above, according to the present invention,
Even if a predetermined command input operation is performed during the recording of a specific control signal (for example, a start ID signal) on the recording medium, the recording operation of the specific control signal is not stopped based on the command input operation.
The specific control signal is recorded at a predetermined length. Therefore, it is possible to prevent a malfunction and a false detection during reproduction due to a short recording of the control signal.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a magnetic recording / reproducing apparatus of the present invention. FIG. 2 is a flowchart showing a specific operation of the magnetic recording / reproducing apparatus of the present invention. 1... Magnetic tape 2... Running means 3... Control means 4... Input means 5... Recording means 6... Reproduction means 7. 8 Detecting means

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yoshiki Furuta 4-2610 Hanazono, Tokorozawa City, Saitama Prefecture Pioneer Corporation Inside Tokorozawa Plant (72) Naoto Arifuku 4-2610 Hanazono, Tokorozawa City, Saitama Prefecture Pioneer Corporation Examiner Noboru Nishiyama in Tokorozawa Plant (56) References JP-A-56-111144 (JP, A) JP-A-60-247845 (JP, A) JP-A-56-137542 (JP, A) 256980 (JP, A) JP-A-62-170075 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) G11B 15/087 101 G11B 27/10

Claims (1)

(57) [Claims] It is stipulated that the main information and the specified length be recorded.
Recording means for recording a specific control signal stored in a recording medium
When the command input means for outputting an operation command signal containing a recording operation command signal indicating the recording operation of the particular control signal for said recording medium, reproducing means for reproducing a signal recorded on the recording medium
From the reproduction signal reproduced by the reproduction means,
A recording / reproducing apparatus comprising: a detection unit configured to detect a control signal; and a control unit configured to control a recording operation of the specific control signal on the recording medium based on the recording operation command signal. During the recording of the specific control signal on the recording medium based on the operation command signal, the recording of the specific control signal caused by a predetermined command input operation on the command input unit is inhibited from being stopped, whereby the recording is performed. controls such that the specific control signal is recorded at the predetermined <br/> length medium, said recording medium
The result of the detection by the detection means during the regeneration of the body
A recording / reproducing apparatus for controlling a reproducing operation of the recording medium based on the information . 2. 2. The recording / reproducing apparatus according to claim 1, wherein the predetermined command input operation is a reproduction command input operation, a fast-forward command input operation, and a rewind command input operation. 3. While the control means is recording the specific control signal on the recording medium based on the recording operation command signal, the command input means performs a reproduction command input operation, a fast-forward command input operation, and a rewind command input operation in the command input unit. 2. The recording / reproducing apparatus according to claim 1, further comprising a blocking unit configured to block output of the reproduction command signal, the fast-forward command signal, and the rewind command signal from the control unit to the outside. . 4. The control unit prohibits a recording stop operation of the specific control signal generated based on a predetermined command input operation in the command input unit during recording of the specific control signal on the recording medium, and performs the specific control. signal is Tokoro
Automatically stops recording when recording at a fixed length is completed
2. The recording / reproducing apparatus according to claim 1 , wherein an operation corresponding to the predetermined command input operation is performed thereafter . 5. 5. The recording / reproducing apparatus according to claim 1, wherein the recording / reproducing apparatus is an R-DAT, and the specific control signal is a start ID signal.