JP2517573B2 - Information recording device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention has a plurality of types of recording formats in which the consumption of recording media required for recording the same information is different, and a plurality of recording formats each having an arbitrary amount of information. The present invention relates to an information recording device for recording an information program on the recording medium according to any one of the plurality of recording formats.

[Conventional technology]

2. Description of the Related Art Conventionally, as an information recording apparatus, for example, in a video tape recorder (VTR) apparatus, there is one in which a timer for reserved recording is built in a TV tuner section.

Further, the conventional VTR device has a plurality of recording modes with different recordable times for the same tape amount. Hereinafter, a VTR device having a standard (SP) mode and a long-time (LP) mode having a recordable time three times as long as the SP mode will be described as such a recording mode. It should be noted that the image quality during reproduction is better when recorded in the SP mode than when recorded in the LP mode.

Now, in a conventional VTR device, a 1-hour television program (TV
If you try to record a) and a 3-hour TV program (TVb), in the reserved recording program, set TVa in SP mode to T
If Vb was set to be recorded in LP mode, two programs could be recorded completely, and TVa could record with higher image quality than TVb.

[Problems to be solved by the invention]

However, in the above case, the recordable time was known in advance, but when performing reserved recording using a tape that has already been recorded halfway, how many hours are available when the tape is recorded in SP mode, for example? It is necessary to decide in which recording mode each program is to be recorded, and then set the reserved recording program, and set the reserved recording program without checking the remaining tape amount as described above. In that case, there is a risk that the tape will run out during the scheduled recording and the recording will be interrupted in the middle of the program, resulting in poor usability.

In order to solve the above-mentioned problems, the present invention determines the best recording format for each information program according to the remaining amount of the recording medium when automatically recording a plurality of information programs on the recording medium. , It is an object of the present invention to provide an information recording device which enables automatic recording and prevents erroneous recording.

[Means for solving problems]

The information recording apparatus of the present invention has a plurality of types of recording formats in which the consumption of the recording medium required to record the same information is different, and a plurality of information programs each having an arbitrary amount of information are recorded in the plurality of types of recording formats. A recording device for recording on the recording medium according to any one of the above, wherein in the case of automatically recording the plurality of information programs on the recording medium, a combination of the plurality of information programs and the plurality of types of recording formats For each of them, calculation means for calculating the consumption amount of the recording medium, detection means for detecting the recordable amount of the recording medium, and the recordable amount detected by the detection means,
By comparing the consumption amount of each recording medium of each combination of the plurality of information programs and the plurality of types of recording modes calculated by the arithmetic means, the recordable amount of the recording medium is not exceeded and Instructing means for selecting a combination of the plurality of information programs and the plurality of types of recording formats that are close to the recordable amount, and appropriately instructing any one of the plurality of types of recording formats according to the selected combination. Recording means for sequentially recording the plurality of information programs in a recordable area of the recording medium based on a recording format appropriately instructed by the instructing means.

[Action]

With the above configuration, when a plurality of information programs are automatically recorded on the recording medium, the information programs are automatically recorded in the optimum recording format according to the recordable amount of the recording medium. This makes it possible to effectively use the recording medium and prevent erroneous recording.

〔Example〕

 Hereinafter, the present invention will be described based on an embodiment of the present invention.

FIG. 1 is a schematic configuration diagram when the present invention is applied to a VTR as an embodiment of the present invention.

In the timer reservation setting circuit 1 of FIG. 1, an operation unit (not shown) is operated, and for example, three programs as shown in FIG. 2 (a), Pa (PM1: 00 to 1:30, SP mode), Pb
(PM3: 00 ~ 4:00, LP mode), Pc (PM5: 00 ~ 5: 45.LP
The recording start and end times of (mode) and the recording mode are set. If a recording automatic set mode, which will be described later, is designated by an operation unit (not shown), it is not necessary to set the recording mode.

First, the operation of this embodiment when the automatic recording set mode is not designated will be described.

If the automatic recording set mode is not specified, the first
The switch in the figure is connected to the A side in the figure, and the time data T relating to the recording start and end times set in the timer reservation setting circuit 1 is supplied to the timer circuit 2 and the recording mode relating to the recording mode. Data M
Is supplied to the recording mode determination circuit 5 via the switch 4.

The timer circuit 2 is provided with a timer (not shown) that constantly counts time, and the time of the timer is compared with the time data T supplied from the timer reservation setting circuit 1 and coincides with the recording start time data. When it does, a recording start pulse P ₁ is generated, and when it coincides with the recording end time data, a recording end pulse P ₂ is generated.

Further, the recording mode determining circuit 5 is supplied with recording start pulses P ₁ and the recording end pulse P ₂ is generated from the timer circuit 2 together with the recording mode data M,該録picture start pulse P ₁ and the recording end pulse A recording mode signal (SP / LP) corresponding to the supplied recording mode data M is generated according to the timing of P ₂ .

The recording start pulse P ₁ and recording end pulse P ₂ and the recording mode signal (SP / LP) generated as described above are supplied to the system controller 6, and the system controller 6 receives the recording start pulse P ₁ as input. Then, a recording start command signal is output to the operating unit 7, and the operating unit 7 loads the tape onto the rotary drum having a rotary head (not shown) and outputs the supplied recording mode signal (SP / LP). Recording is started when the tape is run at the tape running speed based on the tape running speed, and a recording end pulse is sent to the system controller 6.
The recording state is continued in the operation unit 7 until P ₂ is supplied.

As described above, when the automatic recording set mode is not designated, the operation section 7 performs reserved recording based on the recording start and end times set in the timer reservation setting circuit 1 and the recording mode.

Next, the operation of this embodiment when the automatic recording set mode is designated will be described.

If the automatic recording set mode is not specified, the first
The switch 4 in the figure is connected to the B side in the figure, and the time data T relating to the recording start and end times set in the timer reservation setting circuit 1 is supplied to the timer circuit 2 in the same manner as described above. The recording mode M relating to the recording mode is not normally set, but even if it is set, it is not supplied to the recording mode determination circuit 5 by the switch 4.

Further, the time data T is also supplied to the tape consumption calculation circuit 3, and the tape consumption calculation circuit 3 shows the combination of the supplied time data T and the recording mode for each program as shown in FIG. 2 (b). The tape consumption time converted into the tape running speed in the SP mode is calculated for each recording mode setting pattern as described above, and is output to the comparison circuit 8.

On the other hand, during this period, the remaining amount of the tape loaded in the operating unit 7 is detected. That is, when the automatic recording set mode is designated by the operation unit (not shown), the tape is run at the speed in the SP mode for a predetermined period. The operating unit 7 is provided with a frequency signal generator that generates a frequency signal (FG) synchronized with the rotation cycle of the reel holder that rotates together with the supply reel (not shown) around which the tape is wound. When the operation is started, a frequency signal (FG) corresponding to the winding diameter of the remaining tape wound on the supply reel is output and supplied to the counter 9. The frequency signal (FG) is applied to the counter 9.
At the same time, a clock pulse signal (CK) having a frequency higher than that of the frequency signal (FG) is supplied from the clock generator 10, and the counter 9 outputs the clock pulse signal (CK) input during the period of the frequency signal (FG). The number is counted, and the count data is used as the rotation cycle data St of the supply-side reel by an arithmetic circuit (not shown) provided in the supply-side reel tape remaining amount detection circuit 11 so that R = V · St / 2π (R: supply-side reel). Tape winding diameter, V: tape running speed, St: supply side reel rotation period) to calculate winding diameter data R of the tape wound around the supply side reel,
The tape remaining amount data uniquely determined with respect to the winding diameter data R is stored in advance in the memory circuit or the like (not shown) in association with the winding diameter data R, and the tape corresponding to the winding diameter data R is stored. Read the remaining amount data, and the tape running speed is SP
The data is converted into recordable time data in the mode and output to the comparison circuit 8.

In the comparison circuit 8, since the consumption time data when the tape running speed is converted in the SP mode is calculated and supplied for each recording mode setting pattern as shown in FIG. The tape remaining amount data output from the supply-side reel tape remaining amount detection circuit 11 is further converted into recordable time data when the tape running speed is in the SP mode, and compared with the supplied consumption time data.

By this comparison operation, the consumption time data that does not exceed the recordable time and is closest to the recordable time is selected for the recordable time data, and the recording mode setting pattern corresponding to the selected consumption time data is recorded. The mode data M'is supplied to the recording mode determination circuit 5 via the switch 4 connected to the B side in the figure.

For example, in the supply side reel tape remaining amount detection circuit 11, when the tape running speed is set to 1.2 [h] as the recordable time data in the SP mode, the comparison circuit 8 calculates it for each recording mode setting pattern. Of the consumption time data when the tape running speed is converted in SP mode
The consumption time data that does not exceed 1.2 [h] and is closest to 1.2 [h] is 1.08 [h] in the fifth pattern, as is clear from FIG. 2 (b). Therefore, the comparison circuit 8 selects the fifth pattern as the recording mode setting pattern, supplies the recording mode data M ′ representing the fifth pattern to the recording mode determination circuit 5, and the recording mode determination circuit 5 supplies the supplied recording. A recording mode signal (SP / LP) corresponding to the mode data M'is generated. For example, when the recording mode data M'representing the fifth pattern of FIG. 2 (b) is supplied, the SP mode signal and the program Pb for the program Pa and the program Pb are supplied.
Is generated, and an LP mode signal is generated for the program Pc. The recording mode determination circuit 5
The generation timing of the recording mode signal (SP / LP) in the program is supplied from the timer circuit 2 as described above.
It is generated according to the timing of the recording start pulse P ₁ and recording end pulse P ₂ of Pa to Pc.

After the recordable time data of the loaded tape is detected by the supply side reel tape remaining amount detection circuit 11 and the recording mode data M ′ is output from the comparison circuit 8, the tape running speed in the SP mode The running of the tape (not shown), which was running, is stopped and is rewound to the original position. This operation is controlled by the system controller b.

The recording start pulse P ₁ and the recording end pulse P ₂ generated by the timer circuit 2 and the recording mode signal (SP generated by the recording mode determination circuit 5 as in the case where the automatic recording set mode described above is not specified are described below. / LP) is supplied to the system controller 6, and reserved recording according to these pulses and signals is performed in the operation unit 7 as described above.

As described above, in this embodiment, the recording mode of the VTR reservation recording can be freely set for each reservation program, the recording of each reservation program is not interrupted according to the remaining amount of the loaded tape, and It is possible to record by selecting the recording mode that can record with the highest image quality in the remaining amount, prevent erroneous recording, and use the tape effectively.

In this embodiment, when the recordable time data is obtained, the tape is run at the tape running speed in the SP mode and the rotation cycle of the supply side reel is detected.
When the recording start pulse P ₁ is generated by the timer circuit 2 and the system controller 6 loads the tape (not shown) onto the rotary drum having the rotary head (not shown) in the operating section 7, for example, the reel on the take-up side is If the supply reel is fixed and the supply reel is rotatable and the rotation cycle of the supply reel is detected during loading, the time required for loading and the amount of tape to be pulled out by loading are predetermined. Therefore, the pulling speed of the tape can be determined in advance, the winding diameter of the tape wound on the supply side reel can be calculated in the same manner as described above, and the tape wound on the supply side reel can be calculated during the loading operation. It is possible to easily obtain the recordable time data. If the recording mode is selected using the recordable time data obtained as described above, the configuration becomes simpler.

In addition, in the present embodiment, the case of performing the three reserved recordings of the programs Pa to Pc has been described, but the recording mode setting pattern that can be considered according to the number of programs is increased or decreased.
The number of programs is not limited to three as long as the tape consumption calculation circuit 3 shown in the figure is used for calculation.

Further, although the VTR reservation recording function has been described as an example in the present embodiment, the present invention can be applied to other recording devices such as an audio tape recorder and a disk device, and the same applies when applied. The effect of is obtained.

〔The invention's effect〕

As described above, according to the present invention, in the case of automatically recording a plurality of information programs on a recording medium, the best recording for each of the information programs is performed according to the remaining amount of the recording medium. It is possible to provide an information recording device capable of judging the format and automatically recording and preventing erroneous recording.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram when the present invention is applied to a VTR as an embodiment of the present invention. FIG. 2 (a) is a diagram showing an example of reserved recording in the VTR of FIG. 1, and FIG. 2 (b) is a diagram showing a recording mode setting pattern in the reserved recording of FIG. 2 (a). 1 ... Timer reservation setting circuit, 2 ... Timer circuit, 3 ... Tape consumption calculation circuit, 4 ... Switch, 5 ... Recording mode decision circuit, 6 ... System controller, 7 ... Operating section, 8 ... … Comparison circuit, 9 …… Counter, 10 …… Clock generator, 11 …… Supply side reel tape remaining amount detection circuit.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masahiro Takei, 770 Shimonoge, Takano-ku, Kawasaki, Canon Inc., Tamagawa Plant (72) Inventor, Susumu, 770, Shimononoge, Takatsu-ku, Kawasaki, Canon

Claims (1)

(57) [Claims] 1. A plurality of types of information programs each having a plurality of types of recording formats, each of which has a different consumption amount of a recording medium required to record the same information, and each of which has an arbitrary amount of information. According to a recording device for recording in the recording medium according to, in the case of automatically recording the plurality of information programs in the recording medium, for each combination of the plurality of information programs and the plurality of types of recording format, A calculating unit for calculating the consumption amount of the recording medium, a detecting unit for detecting the recordable amount of the recording medium, a recordable amount detected by the detecting unit, and the plurality of units calculated by the calculating unit. Comparing the consumption amount of the recording medium of each combination of the information program and the plurality of types of recording formats, and not exceeding the recordable amount of the recording medium and Instructing means for selecting a combination of the plurality of information programs and recording types of the plurality of types which are close to the recordable amount, and appropriately instructing any one of the recording types of the plurality of types according to the selected combination. An information recording apparatus comprising: a recording unit that sequentially records the plurality of information programs in a recordable area of the recording medium based on a recording format that is appropriately instructed by the instructing unit.