KR970001979B1 - Apparatus and method for controlling a recording operation between a source tape and a target loaded in a multideck vcr - Google Patents

Abstract

The first detector(10) detects the kind of cassette tape that is the remainder information of the tape mounted on the reproduction side deck, the wound area of the supply reel tape, and the wound area of the take up reel tape. The second detector(20) detects the kind of a cassette tape loaded on the picture recording side deck, the wound area of the supply reel, the wound area of the take up reel in the same way as the first detector(10). The system controller(30) calculates the remaining quantity, based on the detection information from the first and second detectors(10,20), of the tape to be reproduced and the tape to be picture recorded, and compares them to control the driving speed of the capstan servo(40).

Description

How to control tape recording of multi-deck V'al

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-deck VCR, and more particularly, to a method of controlling a tape recording control of a multi-deck V-SR suitable for controlling recording of audio and video signals reproduced through one deck to another tape through the other deck. will be.

In general, videotape rides on continuous technology development, and the recording time is differentiated according to the usage. In other words, there are various types of video tapes such as 60 minutes, 90 minutes, and 120 minutes. Tapes with different recording times have different thicknesses to accommodate standardized cassette tapes. In other words, the longer the tape, the thinner the tape.

4 is a schematic block diagram of a tape playback and recording system in a conventional multi-deck VCR. As shown in the figure, when a user selects a manual with a playback tape and a recording tape mounted on a multi-deck VCR for recording a tape, the audio head 130 in the playback side deck 100 The read audio signal of the reproduced tape is amplified to a predetermined level by the amplifying unit 112, demodulated to the original signal by the demodulator 114, and then modulated into a recordable signal by the modulating unit 212 of the deck 200 on the recording side. Then, the amplification unit 214 is amplified to an appropriate level and recorded on the audio track of the tape to be recorded, which is not shown by the audio head 230.

In addition, the video signal read from the reproduction side video head 140 is amplified to a predetermined level by the amplifier 122, and is separated into a luminance signal and a color signal through the high pass filter 123 and the low pass filter 124, respectively. The signal is processed through the luminance signal processor 125 and the color signal processor 126, and then mixed in the mixer 127 to be a displayable image signal.

Next, the video signal output from the reproduction side deck 100 is input by the automatic gain controller 221 in the recording side deck 200 so that its recording level is automatically adjusted and then input to the Y / C separation unit 222. And separated into luminance signal and color signal again. The separated luminance signal and the color signal are signal processed through the luminance signal processor 223 and the color signal processor 224, and then mixed again by the mixer 225. Then, the mixed video signal is amplified by the amplifier 226 to a predetermined level and recorded on the video track of the tape to be recorded as shown by the video head 240.

Meanwhile, the sync signal separator 232 extracts a sync signal from the luminance signal output from the Y / C separator 222, and the control signal generator 234 generates a control signal based on the extracted sync signal. do.

Then, the control signal is amplified by the amplifier 236 to a predetermined level and recorded by the control head 250 in the control track of the tape to be recorded.

However, in the conventional system in which a tape is recorded according to a user's manual selection in recording a tape using the multi-deck VCR as described above, the recording time of the tape reproduced for recording is longer than that of the tape prepared for recording, When a part of another tape is to be recorded on a part of the recorded tape, when the remaining amount of the tape to be reproduced is larger than the remaining amount of the tape to be recorded, a problem arises in that it is impossible to record all the contents to be recorded.

Accordingly, the present invention has been devised in view of the above, and the tape recording control of a multi-deck VCR capable of controlling the recording speed of the tape to be recorded on the basis of the remaining amount of the tape to be played back and the tape to be recorded. He has a purpose in providing a way.

In order to achieve the above object, the present invention controls at least two decks, and playback and recording operations of each of the decks, respectively, and simultaneously controls the playback operation of the playback side deck and the recording operation of the recording side deck of the two decks; In the tape recording control method of a multi-deck VCR equipped with a system control means, the playback deck of the two decks is set to the playback mode and the recording deck is set to the recording mode based on a recording key signal input in the VCR operation key. First step to do; Calculating remaining information on the tape to be reproduced on the reproducing tape based on the type information of the reproducing tape mounted on the reproducing side deck and the tape wound area information of the supply reel and the take-up reel of the reproducing tape; Calculating remaining information on the tape to be recorded on the recording tape based on the type information of the recording tape mounted on the recording side deck and the tape wound area information of the supply reel and take-up reel of the recording tape; The calculated remaining amount information of the tape to be reproduced is compared with the calculated remaining amount information of the tape to be recorded, and when the remaining amount of the tape to be reproduced is smaller than the remaining amount of the tape to be recorded, the tape recording mode of the deck on the recording side Operation of the recording mode in the SP mode: when the remaining amount of the tape to be reproduced is larger than the remaining amount of the tape to be recorded, the recording mode of each of the recording modes of the recording tape A fifth step of sequentially calculating respective recording times; And a sixth step of sequentially driving the tape recording mode of the recording side deck to the SP, LP, or SLP mode based on the recording time for each recording mode of the SP, LP, or SLP for each of the recorded tapes. Provides tape recording control method for deck VCR.

1 is a block diagram of a controller suitable for applying a tape recording control method of a multi-deck VCR according to the present invention.

2 is a schematic illustration showing for explaining the detection of the remaining amount of the tape.

3 is a flowchart illustrating an embodiment of a tape recording control process of a multi-deck VCR according to the present invention.

4 is a schematic block diagram of a tape playback and recording system in a conventional multi-deck VCR.

* Explanation of symbols for main parts of the drawings

1: cassette 2: supply reel

3: take-up reel 4: tape

5: drum 10: first detection unit

20: second detection unit 30: system controller

40: capstan servo 100: play side deck

110, 210: voice signal processing unit 112, 122, 214, 226, 236: amplifying unit

114: demodulator 120, 220: video signal processing unit

123: high pass filter 124: low pass filter

125, 223: luminance signal processing unit 126, 224: color signal processing unit

127, 225: Mixer 130, 240: Audio head

140, 250: video head 212: modulator

221: automatic gain controller 222: Y / C separation unit

230: control signal generation unit 232: synchronization signal separation unit

234: control signal generator 260: control head

The above and other objects and various advantages of the present invention will become more apparent from the preferred embodiments of the present invention described below with reference to the accompanying drawings by those skilled in the art.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

Fig. 1 shows a schematic block diagram of a control device suitable for applying the tape recording control method of a multi-deck VCR according to the present invention.

In the figure, the portion indicated by a broken line and indicated by reference numeral A denotes the reproduction side of the two decks in the multi-deck VCR system, and the portion denoted by the reference numeral B denotes the recording side of the two decks.

On the other hand, the first detection unit 10 included in the recording side deck provides information on the remaining amount of the tape mounted on the reproduction side deck, which is not shown in FIG _. The tape wound area (r _ta ) of the take-up reel is detected. Here, the type of cassette tape is identified according to the time-specific type of the VHS type tape, which is a cassette tape, for example, 60 minutes, 90 minutes, 120 minutes, and so on. To recognize (t) In addition, as shown in FIG. 2, the tape wound areas of the supply reel 2 and the tape up reel 3 can be calculated by obtaining respective radii r _{s and} r _t .

The running speed V of the tape is already defined in the VHS format and can be easily calculated. In FIG. 2, 1 represents a cassette tape and 5 represents a drum.

In addition, the second detector 20 is the remaining amount information of the tape mounted in the recorded side deck, not shown in FIG. 1, that is, the cassette tape type, tape-wound area of the supply reel (r _sb), area tape wound around the take-up reel (r _tb ) is detected in the same manner as in the first detection unit 10 described above.

Then, the system controller 30 calculates the remaining amount of the tape to be reproduced and the tape to be recorded (type and remaining amount information of the loaded tape) based on the detection information from the first and second detection units 10 and 20 described above. The calculated values are compared with each other, and the driving of the capstan servo 40 for adjusting the recording speed of the tape mounted on the recording side deck is controlled according to the comparison result. That is, the tape recording speed of the recording side deck is appropriately controlled in the SP, LP or SLP mode based on the type and remaining information of the tape for playback and recording.

Furthermore, according to the present invention, the system controller 30 compares the remaining amount of the tape to be played back with the tape to be recorded, and then calculates the maximum time that can be recorded in the SP mode according to the comparison result, thereby restoring the rest of the tape. Only control to record in LP or SLP mode. That is, the present invention is to effectively record the tape using the Just REC function using the remaining amount of the tape.

Next, a process of controlling the recording of a tape according to the present invention using the tape recording control apparatus of the multi-deck VCR having the above configuration will be described in detail with reference to FIG. 3 showing the flow thereof.

Prior to the description, the present invention will be described assuming that the mounted tape is a 120-minute recording tape for convenience of explanation and convenience of explanation, and that the set value (C) is set to 20 minutes. It is to be understood that the same result can be obtained even if it is a different kind, and the set value (C) can also be arbitrarily changed.

Referring to FIG. 3, when the operation key in the VCR set or the recording key signal from the remote controller is inputted by the system controller 30 (S1), the playback side deck is in the playback mode and the recording side deck is in the recording mode. It is set (S2), and the counter counts 1 (S3) (where the setpoint C is 20 minutes). Then, the detection information from the tape mounted on the playback side deck, that is, the remaining information of the tape to be played back based on the cassette tape identification number, the tape reel area of the supply reel and the take-up reel is detected (S4), and the recording side deck On the basis of the detection information (information of the same kind as the detection information of the reproduction tape mentioned above) from the tape loaded in the above, the remaining amount information of the tape to be recorded is detected (S5).

Next, after comparing the remaining amount of the recording side tape with the remaining amount of the recording side tape (S6), if the remaining amount of the recording side tape is greater than or equal to the remaining amount of the playback side tape, the system controller 30 determines that the recording side tape is in the SP mode. The capstan servo 40 is controlled to be recorded as (S7). Then, when the recording of the tape is performed in the SP mode and the reproduction end signal from the tape reproduction end sensor (not shown) is input to the system controller 30, the system controller 30 stops the operation of the playback and recording side decks. The recording of the desired tape is terminated.

On the other hand, if the comparison result in step S6 determines that the remaining amount of the playback side tape is larger than that of the recording side tape, the recording time of each recording mode is calculated in step S8, and the playback side remaining amount of tape A and (Where B means the remaining amount of tape on the recording side). If the result of the comparison in step S8 is that the remaining tape amount A on the reproduction side is larger than the calculated value, that is, the value calculated by (B-nc) + (nc × 2), the process proceeds to step S9 and is counted. When the condition that A is smaller than or equal to the calculated value is satisfied by repeatedly performing the steps S8 and S9 again, it is again checked whether the condition of B-nc ≦ o is satisfied (S10).

Next, if the condition B-nc ≦ o is not satisfied as a result of the check in step S10, the system controller 30 records the recording-side tape in the SP mode for the time B-nc in the above conditional expression. The recording side capstan servo 40 is controlled so that the recording side tape is recorded in the LP mode for nc x 2 hours (S11).

On the other hand, if the condition B-nc≤o is not satisfied in the step S10, the playback side tape again checks whether the remaining amount A and the above-described conditional expression, i.e., (B-nc) + (nc × 2) (S12), if it is determined that the condition is satisfied, that is, if the value is the same, the system eliminator 30 records the capstan of the deck of the recording side deck such that the recording tape is recorded in LP mode for nc x 2 hours. If it is determined that the servo 40 is not controlled (step S13) and the check result in the step S11 is not the same, that is, the value calculated by the conditional expression is larger than the value A, the system controller 30 determines that the recording-side tape is A. The capstan servo 40 is controlled to be recorded in the LP mode by the time (S14).

For example, as a result of detecting the remaining tape amount, when the A value is 100 and the B value is 50, the step S8 results in 100> (50-20) + (20 × 2), that is, 100> 70. In step S8, the process repeats step S8 again, and the result of the repetition in step S8 becomes 100 > 90, and again in step S9, the process returns to step S8 again. Will repeat. As a result, the process proceeds to step S10 as 100 < 110 > in step S8. Therefore, in the above example, B-nc, i.e., 50-60 = -10, is not recorded in the SP mode, but is recorded in the LP mode for nc x 2, i.e., 60 x 2 = 120 minutes.

Therefore, as described above, even if the remaining amount of the tape to be recorded remains less than the remaining amount of the tape to be reproduced for recording, it is possible to record all without failure.

Then, when the playback end signal from the tape playback end sensor, not shown, is input while recording is being performed at the recording speed as described above, the system controller 30 stops the operation of the playback and recording side decks, thereby making it desired. The tape recording ends.

On the other hand, in the present invention, taking into consideration that the image quality deteriorates as the recording of the tape becomes longer, the maximum SP mode recording is performed in predetermined time units (5 minutes in this embodiment, but the same effect is obtained even if changed). Later, at least part of the tape was recorded in LP mode.

In addition, in the above-described embodiment of the present invention, the recording speed of the recording tape has been described as being recorded while switching between the SP mode and the LP mode, but this is only presented as an example, and the present invention is not limited thereto. Will not work. That is, the present invention can perform recording while switching the recording mode of the recording tape to the SP, LP, SLP mode, in which case the remaining tape amount on the recording side (the remaining amount for recording) is the remaining tape amount on the recording side (for recording). More effective than the remaining tape).

As described above, according to the present invention, the length of the playback tape and the recording tape (remaining amount) is adjusted by appropriately adjusting the recording speed of the tape to be recorded based on the remaining information on the tape to be played back and the remaining information on the tape to be recorded. Even if) is different, desired recording can be performed effectively.

Claims (2)

A multi-deck VCR having at least two decks and system control means for controlling the playback and recording operations of the respective decks, and simultaneously controlling the playback operation of the playback deck and the recording operation of the recording deck among the two decks. A tape recording control method, comprising: a first step of setting a playback side deck of the two decks to a playback mode and setting the deck to a recording mode based on a recording key signal input in a VCR operation key; Calculating remaining information of the tape to be reproduced on the reproducing tape based on the type information of the reproducing tape mounted on the reproducing side deck and the tape wound area information of the reel and take-up reel of the reproducing tape; A third step of calculating remaining information of the tape to be recorded on the recording tape based on the type information of the recording tape mounted on the recording side deck and the wound area information of the supply reel and take-up reel of the recording tape; Compare the calculated remaining amount information of the tape to be reproduced with the calculated remaining amount information of the tape to be recorded, and as a result of the comparison, when the remaining amount of the tape to be reproduced is smaller than the remaining amount of the tape to be recorded, recording the tape of the deck on the recording side A fourth step of driving the mode to the SP mode; A fifth step of sequentially calculating the recording time for each recording mode of SP, LP or SLP for the recording tape when the remaining amount of the tape to be reproduced is larger than the remaining amount of the tape to be recorded as a result of the comparison in the fourth step; step ; And a sixth step of sequentially driving the tape recording mode of the recording side deck to the SP, LP, or SLP mode based on the recording time for each recording mode of the SP, LP, or SLP for each of the recorded tapes. Deck VCR tape recording control method. 2. The multi-deck VCR of claim 1, wherein the recording time for each recording mode in the fifth step is given priority to the recording time of the SP mode among the SP, LP, and SLP mode recording times. How to control tape recording.