JPH02143975A - Renumbering method - Google Patents

Abstract

PURPOSE:To improve the operability related to end information recording by deciding that sound recording is ended due to a fact that an RF signal is intermitted and recording end information in a position where sound recording is ended. CONSTITUTION:A system controller 5 has a wreck end detecting part 5a, an end information recording part 5b, etc., and the wreck end detecting part 5a detects a fact (wreck end) that an RF signal is intermitted exceeding a prescribed time by a signal S1 of a low level inputted from an RF signal detecting part 4 and sound recording is ended in its position. When the wreck end is detected, the end information recording part 5b sends an end information recording signal to a signal processing circuit 3, and end information of 300 frames is recorded, for instance, for nine seconds from the wreck end. In such a way, at the time of renumbering, the end information can be recorded automatically in a position where sound recording is ended, and the operability related to end information recording can be improved.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention provides a starting ID from the beginning of a recorded DAT tape.
The present invention relates to a renumbering method in which program numbers are rerecorded in order when a recording end is found, and in particular, it relates to a renumbering method in which end information can be automatically recorded at the position where recording ends (rec end).

<Prior Art> When music is digitally recorded using a DAT device, a cue signal (referred to as a start ID) can be recorded at the beginning of a song so that a predetermined song can be searched at high speed. That is, the DAT device is provided with a start ID key, and by pressing this key during recording, the start indicating the beginning of the song can be recorded for the required time (9 seconds). Further, some DAT devices are capable of recording a song number together with a start ID, and by specifying a desired song number, it is possible to search for a song with that song number at high speed.

By the way, if you record the song number at the same time as you record the song.

Track numbers may be recorded incorrectly, track numbers may be doubled, or track numbers may be omitted. For this reason, DAT devices have a function (renumbering function) to reassign track numbers. This renumbering function searches for a start ID from the beginning of a DAT tape in response to a renumbering request, and every time a start ID is searched, the track numbers are sequentially after-recorded together with the start ID.

<Problems to be Solved by the Invention> As described above, the DAT device can record a start ID at the beginning of a song, but it also has a function to record end information at the position where recording ends.

If you record end information using this function, for example, D
To easily search for the position where the last recording ended when playing only the recorded songs repeatedly when no music is recorded on the entire AT tape, or when adding recordings to a DAT tape that has been partially recorded. Can be done. Generally, end information is manually recorded using a predetermined recording key during recording or playback. In other words, conventional end information recording cannot be performed automatically and requires the operator to determine the recording position himself/herself, resulting in a problem that it is extremely inconvenient to use.

In light of the above, an object of the present invention is to provide a renumbering method that can automatically record end information at a position where recording ends during renumbering, and that can improve operability regarding end information recording.

Means for Solving the Problems> In the present invention, the above problems are solved by
This is achieved by means for detecting the presence or absence of the double signal, means for determining that recording has ended when the RF double signal is interrupted, and means for recording end information at the position where the recording has ended.

<Function> During renumbering, the presence or absence of the RF double signal is detected, and when the RF double signal is interrupted, it is determined that recording has ended,
End information is recorded at the position where the recording ends.

<Embodiment> FIG. 1 is a block configuration diagram of a DAT device that can realize the present invention.

In the figure, 1 is a recording/playback head (actually there are two recording/playback heads, 1st and 2nd), and 2 is a recording/playback head.
Reproduction amplifier, 3 is a signal processing section, 4 is an RF signal detection section, 5
Reference numeral numeral 5 designates a system controller composed of a microcomputer, 5a a rec end detection section, 5b an end information recording section, 6 a tape running control section, 7 a tape running mechanism section, and 8 an operation section.

During playback, the signal processing unit 3 stores audio data read from the magnetic tape by the recording/reproducing head 1 into a built-in RAM, and also performs error detection, correction, and other processing on the audio data as ff1. The signal processing unit 3 performs D/A conversion and outputs it to the outside, and also identifies the start ID, time code, track number (program number, etc.) included in the subcode. The analog audio signal obtained by the A/D conversion is A/D converted, an error correction code is added to the digital audio signal obtained by the A/D conversion, and the signal is sent along with a predetermined subcode to the recording/playback head 1 via the recording/playback amplifier 2. and record it on magnetic tape.

Further, the signal processing unit 3 receives the start ID according to an instruction from the system controller 5.

Performs recording processing of track numbers, end information, etc. onto magnetic tape.

As shown in FIG. 2, the RF signal detection section 4 includes a detection circuit 4a that detects the amplifier output (reproduction signal) AS and outputs a detection signal Sd having an envelope waveform of the RF signal 5rf (see FIG. 3). , a smoothing filter 4b that smoothes the detected signal Sd and outputs a DC level Lrf, a threshold level Ls (see FIG. 3), and a smoothing filter 4b that smoothes the detected signal Sd and outputs a DC level Lrf.
It has a comparator 4c that compares the magnitude of the level Lrf output from the terminal b. Note that the comparator 4c is
When Lrf≧Ls, a high level signal S is output as the RF multiplied signal, and when Lrf<Ls, a low level signal S1 is output as there is no RF signal.

The system controller 5 includes a resokend detection section 5a,
It has an end information recording section 5b and the like.

The recording end detecting section 5a detects that the RF multiplied signal is interrupted for a certain period of time or more by the low level signal S input from the RF signal detecting section 4, and that the recording ends at that position (recording end). When the record end is detected, the end information recording section 5b sends an end information recording signal to the signal processing circuit 5b, and causes the end information of 300 frames to be recorded for 9 seconds from the record end.

The tape running control section 6 controls the tape running mechanism section 7 in response to commands from the system controller 5, and appropriately performs tape feeding control such as fast forwarding, rewind feeding, playback feeding, and single-speed review feeding.

The operation unit 8 is provided with various operation keys, and 8a is a renumber key for activating the renumbering function of the present invention.

Hereinafter, the overall operation of FIG. 1 will be explained according to the flowchart of FIG. 4.

First, the user presses the renumber key 8a of the operation section 8 to request renumbering of the song (step 101).

When the above request occurs due to suppression of the renumber key 88,
The system controller 5 causes the tape running control unit 6 to rewind the tape to the beginning of the tape (step 102).

When tape rewinding is completed, the system controller 5
The program number (program number) is set from 1 to n (step 103), and the tape running control unit 6 runs the tape in fast forward to search for the recorded start ID (step 104).

During the search, the system controller 5
Based on the subcode inputted from the step 105), the presence or absence of the RF multiplied signal is determined, and if the RF multiplied signal is recorded, then the presence or absence of the end information is determined in step 06).
, if there is no end information, then it is determined whether there is a start ID (step 107).

Then, if the start ID is recorded on the tape, after recording the track number n along with the start ID (step 108), the track number is incremented by 1 from n+1→n (step 109), The process returns to step 104 and the subsequent processes are repeated...The above renumbering process On the other hand, if the RF multiplied signal is detected as determined in step 105, the signal S1 remains at a low level for a certain period of time or more.
The leg end detection unit 5a detects this position as the position where recording has ended (step 110).

Thereafter, the end information recording section 5b outputs an end information recording command to the signal processing section 3, and causes the recording/reproducing head 1 to record end information on the recording end (step 111).

...The above is the end information recording process. If it is determined in step 106 that recorded end information exists, the process of the present invention ends at that position.

<Effects of the Invention> According to the present invention, the presence or absence of an RF multiplied signal is detected during renumbering, it is determined that the recording has ended when the RF multiplied signal is interrupted, and end information is inserted at the position where the recording ended. Since it is configured to record end information, it is possible to automatically record end information at the position where recording ended during renumbering.
The operability regarding end information recording can be improved.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a DAT device that can implement the present invention, and FIG. 2 is a block diagram of an RF signal detection section. FIG. 3 is a waveform diagram of each part in FIG. 2, and FIG. 4 is a flowchart of the processing of the present invention. 1. Recording/playback head, 3. Signal processing section, 4. RF signal detection section, 5. System controller, 5a.. Leg end detection section, 5b.. End information recording section, 8a.. Renumber key.

Claims (1)

[Claims] In a renumbering method in which program numbers are sequentially assigned when a start ID is found from the beginning of a recorded DAT tape, the presence or absence of an RF signal is detected during renumbering, and the RF signal is interrupted. It is determined that the recording is finished by
A renumbering method characterized by recording end information at the position where the recording ends.