JPH02199651A - Digital tape recorder - Google Patents

Abstract

PURPOSE:To automatically return a tape to the beginning of a program when the tape is loaded with its tape position in the midst of the program by providing a half detecting means, a start ID discriminating means and a mechanism commanding means. CONSTITUTION:It is detected by the half detecting means 16 that a cassette half is loaded in a mechanism, and in this tape position when a regenerated start ID is '0', i.e. the tape position in the midst of the program is discriminated by the start ID discriminating means 8, a command is issued by the mechanism commanding means 11 to rewind the tape. Then, in the beginning position of the program when the start ID is changed from '1' to '0', the tape is commanded by the mechanism commanding means 11 to stop. By this method, the tape is automatically returned to the beginning of the program when it is loaded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a digital tape recorder, such as a rotary head type digital audio tape recorder, which is capable of playing back a tape recorded by digitizing recorded information. (Hereinafter, a single-rotation head type digital audio tape recorder will be referred to as R-DAT6) Conventional technology In recent years, digital tape recorders have been designed with a program number ID indicating the program number, in consideration of subcode dubbing and high-speed search. n 111 indicates the beginning of the program, "on" indicates the start ID indicating that the program is in the middle, "1" indicates the program number is valid, and "o" indicates the program number is invalid. As shown in Figure 3, it is determined that the priority xD indicating a certain program and the subcode indicating the entire program time are recorded for approximately 9 seconds at the beginning of each program on the tape. (For example, THE DAT CONFERENCE STANDARD (THE DAT)
C0NFKRKNCIC5TANDARD):DI(
rITAL AUDIOTAPICRKCORDKR
(Refer to 3YSTXM June 19s7) (Program number ID1kPNO-ID, start ID 5
- ID and priority are written as Pr-ID, and the program time recorded as a subcode is written as P-Time. Therefore, - If the tape is loaded at the tape position 1 in Fig. 3, -Pr-ID is 1? Since it is 1+1, the program number and program time at the loaded tape position can be determined and displayed from the PNO-ID and P-Time.

Problems to be Solved by the Invention However, - When the tape is loaded at the tape position [Yes] - the program number cannot be determined because the Pr-ID is "O" - furthermore, a valid p-Time is not recorded. Therefore, there was a problem in that the program number and program time could not be displayed.

In view of the above problems, the present invention has been developed in the case where the tape is loaded at a tape position in the middle of the program, that is, when the 5-ID is "o"
” provides a digital tape recorder that can automatically return to the beginning of the program.

Another object of the present invention is to provide a digital tape recorder that can return to the beginning of a program and display the program number and program time.

Another object of the present invention is to provide a digital tape recorder that is capable of displaying the program number and program time at a tape position when the program number and program time can be determined.

Means for Solving the Problems In order to solve the above problems, the digital tape recorder of the present invention includes half detection means for detecting that a cassette half is attached to the mechanism.

8-Start ID to determine whether ID is Pa1'' or 0''
At the tape position where the determining means and one cassette half are attached to the mechanism, if the reproduced 5-10 is "O", the tape is commanded to be rewound and -3-4D is "1".
The apparatus is equipped with a mechanism command means for instructing the tape to completely stop at the tape position changed from "IO'" to "IO'".

In addition, a priority ID determination means for determining whether Pr-ID is °'1" or °O" and -Pr-ID is determined from 1" to °
Changes to ＠0″ and reaches the 9 tag position, and -Pr-ID is °
The program number and program time are determined from the PNO-ID reproduced when °1'', and the program number and program time are determined by the output signals of the display data encoder and 1 display data encoder that displays that the program time is "0 minutes 00 seconds." It is equipped with a display means for displaying.

In addition, the Pr-ID that is once played at the tape position where the cassette half is attached to the mechanism is "1" and P
- If Time is recorded, a display data encoder is provided to display the program number and program time at the tape position mounted on the mechanism.

Effect of the present invention With the above-described configuration, the half detection means detects that the tape is attached to the mechanism, and the start ID discriminating means detects that the tape is placed in the mechanism.
Is the reproduced start ID HOI? In other words, when it is determined that the tape position is in the middle of the program, the mechanism command means commands the tape to be rewound. Since the means instructs the tape to stop, it is possible to automatically return to the beginning of the program when the tape is loaded.

In addition, the priority determination means determines the Pr-ID immediately before the tape stops, and the P-ID when the Pr-ID is 11'' is determined.
From NO-ID, the display data encoder outputs a signal to the display means to display the program number, and further outputs a signal to the display means to display the program time as 0 minutes 00 seconds. and the program time can be displayed.

Further, the half detecting means detects that the cassette half is attached to the mechanism, and at that tape position, the priority ID determining means determines that the reproduced Pr-ID is +11+1. In other words, if PNO-4D is valid, it is 1. Since the display data encoder outputs a signal to the display means to display the program number and program time, the program number and program time can be displayed.

Embodiment A digital tape recorder according to an embodiment of the present invention will be described below with reference to one drawing.

FIG. 1 is a block diagram of a digital tape recorder according to an embodiment of the present invention. In FIG. 1, 1 is a magnetic tape, 2 is a reproducing head attached to a cylinder of a mechanism 14 which will be described later, and -3 is a reproducing amplifier. , 4 is a reproduction signal processing circuit which performs error correction of the digital signal and de-interleap processing to restore the original temporal alignment, etc., and separates and outputs the audio signal and subcode signal. is an analog output terminal. 7 is 5-
This is a subcode decoder that obtains subcode signals such as rD, Pr-, ID, PNO-ID, and P-Time. 8
is the output signal of the subcode decoder 7, which is the start 1:D discrimination section that determines whether 5-ID is 0"9 or 1".
9 is the output signal Pr-ID of the subcode decoder 7
Priority ID to determine whether it is "O" or '1''
-10 in the discrimination section is PNO-4D, which is the output signal of the subcode decoder 7.

This is a display data encoder that creates display data such as a program number and program time from P-Time or by program processing by the system controller 18, which will be described later. A mechanism command section 11 outputs a command signal to a mechanism controller 13 that controls the mechanism 14 based on the output signals of the start ID determination section 8 and the priority ID determination section 9. Reference numeral 12 denotes a system controller including a start ■D discriminating section 8, a Briorites 10 discriminating section 91, a display data encoder 10, and a mechanism command section 11, and is composed of, for example, a microcomputer. 13 is a mechanism controller that controls the mechanism 14 based on the output signal of the mechanism command unit 11; 14 is the mechanism; and -16 is a cassette half in which the magnetic tape 1 is stored. , 16 is a half detection section that detects whether or not the cassette half 16 is attached to the mechanism 14 and outputs the result to the system controller 12. Reference numeral 17 is a display section that displays the program time, program number, and the like.

Regarding the R-DAT configured as above, the following is the first section.
The operation will be explained using FIG. 2, FIG. 3, and FIG. FIG. 2 is a flowchart showing part and all of the processing of the system controller 12.

First, as shown in Figure 3, -pro-ID=1'012
” and “+13”-5-ID=”I ITPr-ID=
"1" - P-Time is the 12th and 13th track on the tape
The first 9 seconds of the song are recorded, PNO-ID=,”OA
A”-8-ID=”O”Pr-ID=”O” is recorded in the cassette half 16 at position ■ of the magnetic tape 1 where 9 seconds of the beginning of the 12th and 13th tracks of the tape are recorded. When it is attached to the mechanism 14, the half detection unit 16 outputs to the system controller 12 that the cassette 716 is attached to the mechanism 14, the magnetic tape 1 is loaded into the cylinder, and the magnetic tape 1 is loaded into the cylinder, and then the magnetic tape 1 is loaded into the cylinder, and the magnetic tape 1 is loaded into the cylinder.
．． Reproduction signal processing circuit 4. The subcode signal is input to the system controller 12 via the subcode decoder 7. In determination step 311C of FIG. 2, the system controller 12 determines that the cassette half 16 is
Since the device is attached to the device, the process goes to judgment step 32. In decision step 32, subcode decoders 7 to 5-I
D is input to the start ID discrimination section 8, and at the position of 1■, 5 is input.
Since -40 is "'0'", processing reaches step 33. In processing step 33.

The mechanism command unit 11 of the system controller 12 causes the mechanism 14 to rewind! A signal is output to the mechanism controller 13 to set the mode, and judgment step 3
4. When the magnetic tape 1 is rewound to the 0 position, the subcode decoder T starts the start ID discrimination section and the priority ID discrimination section [-3-ID and Pr-ID are both I
Outputs that I 1+1. As a result, in the first judgment step 34, the start 10 discriminator 8. Processing step 3 is performed in order for the IIl distinguishing unit 9 to determine that both 5-ID and Pr-ID are It 111 based on the priority.
It reaches 6. In processing step 36, the one-display data encoder 10 stores Pr-ID t(o 12 ++, and the process proceeds to judgment step 36. When the magnetic tape 1 is rewound to the position O, the subcode decoder 7 stores the start ID
It outputs to the discrimination section that 5-ID is 0'''.As a result, it is at step 1 judgment 36, and from the start f:l
In order to determine that the J-specific county part 85-ID is "O", processing proceeds to step 37. In processing step 3a,
The mechanism command unit 11 outputs a signal to the mechanism controller 13 so that the mechanism 14 enters the 1-stop'' mode, leading to a 1-determination step 38. In the determination step 38, the 1-display data encoder 10 outputs a signal to the mechanism controller 13 so that the mechanism 14 enters the 1-stop mode. -Program number is 12 from ID
It is determined that it is curved, and the process proceeds to step 39. In processing step 39, the data encoder 10 displays the program time even though it is at the end of the 11th song.

The process is set to '0 minutes Oo seconds' and the process proceeds to step 40.

In processing step 40, 1 display data encoder 1o
outputs a signal for displaying the program number and program time on the display section 17.

Also - cassette half 1 located at position ■ of magnetic tape 1
When the cassette half 16 is attached to the mechanism 14, the half detection section 16 outputs to the system controller 12 that the cassette half 16 is attached to the mechanism 14, and the process proceeds to judgment step 32. In decision step 32, subcode decoders T to 5
-ID is input to the start ID determination unit 8, and since 5-ID is 1'' at the position ■, the process reaches process step 41. In process step 41, since Pr-4D is 1'', process step At step 42, the 1-display data encoder 10 determines that the program number is the 12th song from the PNO-ID, which is the output signal of the subcode encoder 7, and proceeds to processing step 39. In processing step 43, the display data encoder 10 determines from the P-Time, which is the output signal of the subcode encoder 7, that the program time is, for example, 7 seconds.
Then, the 1-display data encoder 10 outputs a rounding signal that displays the program number and program time on the display section 17.

As described above, according to this embodiment, the half detection section 16 which detects that the cassette half 16 is attached to the mechanism 14 and the -8-4D are connected to the start 10 discriminating section 8 which discriminates whether it is N I It or 0'''. If the cassette half 16 is at the tape position attached to the mechanism 14 and the played 3-ID is °"o", the tape is commanded to be rewound, and the 5-ID is ++1+9 to tt. O++
By providing the mechanism commanding section 11 that instructs the tape to stop at the tape position that has changed to , the half detecting section 16 detects that the cassette half 16 is attached to the mechanism 14, and stops the tape at that tape position.

The start 10 determination unit 8 determines that the reproduced start ID is '
If it is determined that the tape position is in the middle of the program, the mechanism command unit 11 commands the magnetic tape 1 to be rewound and the start ID is set to °"1'.
Since the mechanism command unit 11 instructs the magnetic tape 1 to stop at the beginning position of the program where the position changes from ' to "o", the program can be automatically returned to the beginning when the tape is loaded. Therefore, the effect is that the next time the playback switch is pressed, the program can be played back from the starting point.

In addition, the priority ID discriminating unit 9 that determines whether Pr-ID is 1t11' or ItO1' and -Pr-ID is 1''
-Pr-ID at the tape position changed from to O''
The program number is determined from the reproduced PNO-4D when the program time is 1''' by the output signals of the display data encoder 10 and the display data encoder 1°, which display that the program time is "o minutes 00 seconds." By providing the display section 17 that displays the program time, the Briolite I discriminating section 9 can discriminate Pr-4D immediately before the magnetic tape 1 stops - from the PNO-ID when Pr-ID is ``1''. , the display data encoder 10 outputs a signal to the display section 17 to display the program number and further outputs a signal to the display section 17 to display the program time as °'0 minutes O minutes seconds 0 seconds. Program number and program time can be displayed.

- At the tape position where the cassette half 16 is attached to the mechanism 14, the ft-Pr-ID is
1'' and P-Time is recorded, the display data encoder 10 displays the program number and program time at the tape position mounted on the mechanism 14.
By providing this, the half detection unit 16 detects that the cassette half 16 is attached to the mechanism 14, and at that tape position, the priority ID determination unit 9 determines whether the reproduced Pr-rD is II, II-, or P
If NO-ID is valid, display data encoder 10
outputs a signal to the display unit 17 to display the program number and program time, so that the program number and program time can be displayed. Therefore - like a music soft tape, the PNO is valid for the entire program.
For tapes recorded with -rD and Pr-ID1'"1", the program number and program time can be displayed at the same time as one tape is inserted.

Effects of the Invention As described above, the present invention provides half detection means for detecting that a cassette half is attached to a mechanism, and -8-ID.
start ID determining means for determining whether the cassette half is 1'' or 0'', and a command to rewind the tape if the played 5-4D is 90° at the tape position where the cassette half is attached to the mechanism. By providing a mechanism command means for commanding the tape to stop at the tape position where the ID changes from 1'' to '0', the half detection means can detect that the cassette half is attached to the mechanism. Detect and start I at that tape position.
When the D determining means determines that the played start ID is "0", that is, the tape position is in the middle of the program, the mechanism command means commands to rewind the tape, and the start rD is set to °'1. Since the mechanism command means instructs the tape to stop at the beginning position of the program where it has changed to "" or "o", it is possible to automatically return to the beginning of the program when the tape is loaded.

Also, -Pr-ID is j(I If or 'O'''-
Briolides ID discrimination means for differentiating ftJ and Pr-I
The pa played when Pr-ID is 1+1u at the tape position where D changes from "1" to "0"
.

By providing a display data encoder that displays the program number from the ID and that the program time is "0 minutes 00 seconds" and a display means that displays the program number and program time using the output signal of the 1 display data encoder, The priority determining means determines the Pr-ID immediately before the tape stops, and the Pr-ID is determined to be IT 11T.
From the PNO-ID when , can display the program number and program time.

- When the cassette half is played once at the tape position installed in the mechanism, f3Pr-ID is 11' and f
) If the P-Time is recorded, the half detection means can detect that the cassette half is installed in the mechanism by providing a display data encoder that displays the program number and program time at the tape position installed in the mechanism. Detected, at that tape position, the priority ID discriminator stage detects that the played Pr-10 is “
1'', that is, when PNO- is valid, the display data encoder outputs a signal to the display means to display the program number and program time, so that the program number and program time can be displayed.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing the configuration of a digital tape recorder according to an embodiment of the present invention, Fig. 2 is a flowchart showing part of the processing of the system controller of the digital tape recorder, and Fig. 3 is a block diagram showing the configuration of a digital tape recorder according to an embodiment of the present invention. FIG. 4 is a timing diagram showing the relationship between subcodes, display contents, and tape positions for explanation. 1...Magnetic tape-7...Subcode decoder 8...Start ID discrimination unit, 9...
...Priority ID discrimination section-10...
Display data encoder, 11...Mechanism command unit +12...System controller, 13.
... Mechanism controller 14 ...
Mechanism, 16...Cassette half-16.
...Half detection part-17...Display part. Name of agent: Patent attorney Shigetaka Awano and 1 other person 2nd
figure

Claims (3)

[Claims] (1) A half detection means for detecting that a cassette half is attached to the mechanism, and a start ID indicating the beginning of the program in the reproduced subcode is "1" or "1"
If the played start ID is "0" at the tape position where the cassette half is attached to the mechanism, a start ID discrimination means for discriminating "" and a start ID discriminating means for discriminating the start ID from "1". A digital tape recorder comprising mechanism command means for commanding the tape to stop at the tape position changed to "0". (2) a half detection means, a start ID determination means, a priority ID determination means for determining whether the priority ID indicating the validity of the program number in the reproduced subcode is "1" or "0", and the mechanism command means and the start ID and priority ID change from “1” to “0”.
” At the tape position that changes to “Priority ID
A display data encoder that displays the program number and program time obtained from the program number ID that indicate the program number in the reproduced subcode when is "1" and that the program time is "0 minutes 00 seconds," and the output of the display data encoder. 2. The digital tape recorder according to claim 1, further comprising display means for displaying the program number and program time using signals. (3) If the reproduced priority ID is "1" and the program time information is recorded at the tape position where the half detection means, the priority ID determination means, and the cassette half are installed in the mechanism, the mechanism 2. The digital tape recorder according to claim 1, further comprising a display data encoder for displaying a program number and a program time at a position of the loaded tape, and said display means.