JP2002074907A - Digital sound recorder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To consider copyright protection in a high-speed sound recording and to allow a high-speed copying right after a sound recording medium exchange when sound recording is not completed by the deficiency of the capacity of a sound recording medium. SOLUTION: A prescribed time value is set as a sound recording prohibition time in a timer corresponding to information to specify the track (music) of a CD detected by an identifying means 5a and simultaneously a corresponding UTOC check flag is set and is stored into a memory means 15. The prescribed time value of the track at which the high-speed sound recording is started is subtracted by the data of a counter means 13 and is made into zero. If the corresponding UTOC check flag is reset, the value is deleted together with the information to specify the track and if the sound recording is completed, the UTOC check flag is cleared as well. When the sound recording is interrupted by the deficiency of the capacity of the recording medium, since a control means clears the value of the corresponding timer at which the UTOC writing check flag is erected, the copying failing to be completed after the exchange of the sound recording medium can be immediately started.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is capable of reproducing a digital signal recording medium such as a compact disk (hereinafter referred to as a CD) at a higher speed than a standard, and reproducing the reproduced signal on a recording medium such as a mini disk (hereinafter referred to as an MD). The present invention relates to a copyright protection means of a digital recording device capable of digital recording at a high speed.

[0002]

2. Description of the Related Art Conventionally, when digital recording is performed from a CD or other digital signal source to a device capable of digital recording such as an MD, personal use is extremely limited in the first generation digital recording from a signal source. No recording prohibition process is performed, and the recording is prohibited when attempting to perform the second generation digital recording from the recorded MD or the like.
RIAL COPY MANAGEMENT SYST
Digital recording has been prevented from being repeated indiscriminately by a technique called EM (hereinafter, SCMS).

[0003]

However, in this system, the first generation digital recording is premised on recording at a standard speed, so that recording at a speed exceeding the standard speed, for example, a digital signal from a digital signal source at twice or more speed is used. In the case of recording, if it is possible to repeat the digital recording from the same signal source after the completion of the recording in a certain unit, the act beyond the scope of copyright protection for personal use called SCMS if it is possible Is more likely to be determined. In a digital recording device capable of digital recording at a recording speed exceeding such a standard speed, some consideration for copyright protection is required.

One of such considerations is that a predetermined time is set at the start of high-speed recording, and a timer is provided which counts down as time elapses. If the configuration is such that high-speed recording cannot be started, continuous recording cannot be performed, and a device that takes copyright protection into consideration can be configured. However, in such a configuration, if the capacity of the recording medium to be recorded becomes insufficient during the recording of a certain unit (track = song), and all the certain units cannot be recorded on one recording medium, the recording is performed. Is not written in the UTOC area because the recording has not been completed, and this fixed unit has the same result as if the recording was not made from the beginning, or the recorded content was a part of the fixed unit. Or
However, only the remaining time of the timer set at the start of recording remains, and even if a new recording medium is mounted, it is not possible to start recording again immediately, which is very difficult to use.

According to the present invention, when digital reproduction is performed at a reproduction speed exceeding the standard speed and the reproduced signal is simultaneously digitally recorded at a speed exceeding the standard speed, the recording is performed due to a shortage of a recording medium to be recorded in the middle. When the recording is stopped, the remaining time of the timer corresponding to this track = song and the track for which recording could not be performed thereafter is cleared by the above timer, so that the same content is immediately recorded when a new recording medium is mounted. The purpose of the present invention is to provide a digital recording device that is easy to use while prohibiting excessive continuous high-speed recording in consideration of copyright protection.

[0006]

According to a first aspect of the present invention, there is provided a digital recording apparatus for reproducing a digitally recorded signal at a speed higher than a standard and outputting a digital signal. Digital recording means for digitally recording a digital input signal at a speed higher than a standard, identification means for extracting information for specifying a recording signal for each fixed unit from the digitally recorded signal, and reproduction by the digital reproduction means Then, information for specifying a digital recording signal of a certain unit identified by the identification means, a value of a predetermined time as a timer value, and a check flag for checking that recording by the digital recording means has been designated are paired. Means for counting down a value of a predetermined time as a timer value stored in the memory means. Counter means for generating information, and control for controlling each of the means and for inputting a digital signal reproduced at a higher speed than standard by the digital reproducing means and controlling the digital recording means to perform digital recording at a higher speed than standard. Means for checking the timer value of the memory means before starting high-speed recording by the digital recording means, and using the same timer information as the information for specifying the digital recording signal of the fixed unit to be recorded. The remaining ones are configured not to permit high-speed digital recording, and the control unit is configured to allow a digital recording signal of a certain unit reproduced by the digital reproduction unit to start recording by the digital recording unit. The digital recording signal stored in the memory unit is stored in correspondence with the information for specifying the digital recording signal. A value of a predetermined time as a timer value is started to be subtracted based on the count information of the counter means, and if the timer value becomes 0 and the check flag is reset, the digital recording signal of the certain unit is specified. The information is deleted from the memory means together with the information, and the control means resets the check flag when the recording of the predetermined unit from the reproduction recording medium is completed and the recorded information is recorded on the recording medium of the digital recording means. If the recording of the fixed unit from the reproduction recording medium is not completed due to a shortage of the remaining time of the recording medium, the recording unit is kept set, and the control unit searches and sets the check flag in the memory unit. It is characterized in that the value of the predetermined time corresponding to the check flag that has been set is deleted.

With this configuration, when a certain recording medium is reproduced at a high speed by the digital reproducing means, and when the reproduced signal is to be recorded on another recording medium at a high speed by the digital recording means, the control means checks the memory means. If a track (song) to be recorded from now is recorded within a predetermined period of time, recording is prohibited, and if the previous recording was insufficient for the recording medium (DISK FUL)
If the recording is not completed according to L), the recorded flag has not been written on the recording medium for recording, and the check flag remains on. Therefore, recording was not performed by deleting the timer value corresponding to this flag. Digital recording that acts so that re-recording can be started immediately, prevents excessive continuous high-speed recording, protects copyrights, and has a means to cope with recording incomplete recording due to insufficient storage medium capacity. Equipment can be provided.

According to another aspect of the present invention, there is provided a digital recording apparatus for reproducing a digitally recorded signal at a speed higher than a standard and outputting a digital signal, and a digital input signal. Digital recording means capable of digitally recording at a speed higher than the standard, identification means for extracting information for specifying the recording signal for each fixed unit from the digitally recorded signal, clock means for outputting the current time, and digital reproduction Means for identifying the digital recording signal of a certain unit reproduced by the means and identified by the identification means, the recording start time obtained by the clock means, and checking that recording by the digital recording means has been designated Memory means for storing a set of flags;
Calculating means for calculating the elapsed time from the recording start time stored in the memory means and the current time of the clock means; and a digital signal which controls each of the means and is reproduced by the digital reproducing means at a speed faster than a standard. Control means for controlling the digital recording means to perform digital recording at a speed higher than a standard, wherein the control means corresponds to information for specifying a digital recording signal of a certain unit reproduced by the digital reproducing means. The difference between the recording start time for each fixed unit and the current time of the clock means is calculated by the calculating means at regular intervals, and the digital recording signal of the fixed unit is calculated if the difference exceeds the predetermined time. The information is deleted from the memory together with the information to be specified. The start time is checked, and if the recording start time remains, the high-speed digital recording is not permitted, and the control means sets the check flag to indicate that the recording of a certain unit from the reproduction recording medium has been completed and the recorded information has been recorded. The digital recording means is reset at the time of recording on the recording medium and is kept set when recording from the reproduction recording medium is not completed due to shortage of the remaining time of the recording medium, and the control means stores the data in the memory means. It is characterized in that the check flag is searched and the recording start time corresponding to the set check flag is deleted.

With this configuration, the recording of the same track (song) recorded within a predetermined time by a method different from that of the first aspect is similarly performed, and if the previous recording was completed due to lack of capacity of the recording medium. Otherwise, the check flag remains on because the recorded information has not been written to the recording medium for recording.Therefore, by deleting the recording start time corresponding to this flag, it was determined that there was no recording. A digital recording device that acts so that re-recording can be started immediately, prevents excessive continuous high-speed recording, and takes into account copyright protection while also providing a means to cope with situations where recording is incomplete due to lack of storage medium capacity. Can be provided.

[0010]

(Embodiment 1) A digital recording apparatus according to Embodiment 1 of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of a digital recording apparatus according to a first embodiment of the present invention. FIGS. 2 and 3 are operation flowcharts when a microprocessor is used as control means. FIG. FIG. 3 is a flowchart of a timer and check flag setting process at the start of high-speed recording.

In FIG. 1, the digital reproduction means 1 is a CD 2
The CD drive means 3 rotates the CD 2 and the CD pickup 4 takes out the information from the CD 2 and decodes it by the reproduction circuit 5 to perform processing such as error correction. The identification means 5a of a part of the reproducing circuit reads the TOC information and the subcode information of the CD2 and specifies a track (music) as a fixed unit. As a specific method, as described later, the identification means 5a first checks the number of tracks (songs) of one CD, the total performance time, the performance start time of the second track (song), and the like. The track (song) is identified based on the number of the song.

As described above, it is determined whether the CD to be reproduced is a previously recorded one or a new one based on a combination of these data. Since the digital reproducing means 1 is a known one, it drives the CD 2 in rotation, means for tracking and focusing on a track on which the information is recorded,
Details such as means for reproducing and decoding information taken out from the D pickup 4 are omitted.

The digital recording means 6 can be recorded on the MD 7 and reproduced therefrom.
MD driving means 8 for driving D7 and MD pickup 9
a, the magnetic head 9b, the recording circuit 10, etc. are omitted for the same reason.

In this case, the microprocessor 11 controls at least the operation of recording the audio information reproduced from the digital reproducing means 1 at a speed higher than the standard speed by the digital recording means 6 on the MD 7 at a speed higher than the standard speed. Of course, it may also serve to control the operation of each part of the digital reproduction means 1 and the digital recording means 6.

The control means 12 of the microprocessor 11 has a counter means 13 and an operation means 14. Further, the memory means 15 can store a plurality of information (for example, 50 tracks) for specifying a recording signal of the CD2 which is a reproduction recording medium by using a track (song) as a fixed unit as needed, and specify the track (song). A number of timers corresponding to the number of data and a UTOC write check flag corresponding to the number can be stored in pairs. When digital recording is performed from the digital reproducing means 1 to the digital recording means 6 at a speed exceeding the standard speed, information (number of tracks a) specifying the CD2 disk and a plurality of tracks (songs) to be reproduced in the memory means 15 at the start of recording. , The total performance time b, the d-th song in the CD having the start time c of the second song), a predetermined time Tc is set as an initial value in a timer corresponding to this information, and the corresponding MD7 UTOC writing check is performed. Set a flag. Track (song) where recording started
In response to this, the control means 12 starts subtraction based on the information from the counter means 13 from the initial value set in the corresponding timer.

Here, the predetermined time Tc is a time set to prevent the same disc from being dubbed at a high speed continuously, and is set based on the following concept. For example, if high-speed dubbing, in which the signal is reproduced at twice the standard speed and this signal is input and recorded at twice the standard speed, is continuously performed, dubbing twice the normal amount can be performed. .
To ensure that duplicate copies of the same recording are as good or less than at standard speed with continuous dubbing,
For example, if dubbing is performed from the beginning to the end of a certain CD, after the recording is started, the recording of the same CD may be prohibited for the recording time of the reproduction recording medium. For example, assuming that the maximum recording time of CD2 is 74 minutes, if a prohibition time of 74 minutes is provided from the start of recording, the time elapsed without recording another disc or performing high-speed dubbing in between. You can't record the same disc unless you wait for
It is possible to prohibit a plurality of high-speed recordings in a shorter time than a continuous recording of the same disk at a standard speed.

The number of timers provided in the memory means 15 is determined by erasing the storage of the high-speed recording end time at which the predetermined time Tc has elapsed. Is (m / n) minutes, the high-speed recording prohibition time is (Tmax-m / n) minutes, and when divided by the high-speed recording time per song (m / n), the number of songs is about n · Tmax / m-1 It is enough to manage a plurality of high-speed recording end times Trec, and if Tmax = 74 minutes, and if one song is about three minutes, the memory amount can manage about 49 songs at double speed high-speed recording and about 73 songs at triple speed. Good.

The operation will be described below. First, a method of acquiring information for specifying a CD and its track by the digital reproduction means 1 will be described with reference to FIG. The CD 2 is rotated by the CD driving means 3, and the total number of tracks (songs) of the CD is obtained in step S21 from the information reproduced by the CD pickup 4 and the TOC information and the subcode information read by the identification means 5a. Fifteen
To memorize. Next, in step S22, the total playing time is obtained, and this is stored as a set with the total number of tracks in the memory means 15. In step S23, the performance start time of the second track (song) is obtained, and this is combined with the above data and stored in the memory means 15, thereby completing the specification of one CD. Next, in step S24, the number of the above-mentioned track (song) to which the track selected to be recorded in this CD falls is determined, and the above-mentioned stored data and the number of the track (song) therein are determined. By storing the data combination in the memory means 15 as data for specifying this track. In this way, it is determined whether the CD to be reproduced is a previously recorded one or a new one based on a combination of these data.

The CD 2 with the specified track is reproduced at high speed, and the MD 2 mounted on the digital recording means 6 is reproduced.
7 will be described with reference to the flowchart of FIG. The entire contents of the CD 2 may be recorded in the same order from the beginning to the end, or a desired song may be recorded in a desired order, which is set in advance before starting recording.

When a high-speed dubbing instruction is issued in step S31, the control means 12 causes the memory means 15 to issue a command in step S32.
Check the information specifying the song and the timer corresponding to that song, and from the tracks (songs) to be dubbed now, the same song as the previously recorded track and the timer value remains Check for any. If there is any, the recording is prohibited, and if necessary, it is indicated by a display means (not shown). In this case, multiple tracks (songs) of a series of recordings
Recording may be prohibited if there is a timer value remaining in any one of the tracks, or recording / pause may be repeated for each track (song) to be recorded, and recording / pause may be repeated. If it is possible to calculate that the timer value of the other track becomes 0 while recording from the song whose recording order is earlier than the one calculated by the means 14, the recording may be permitted. Either one may be determined by a design policy.

When the recording is permitted, in step S33, the TOC information is read out by the identification means 5a through the pickup 4 and the reproduction circuit 5 when the CD 2 is mounted, and is stored in the memory means (even if it is the memory means 15 or another not shown). Information for specifying a track (song) stored in the memory means 15 may be stored in the memory means 15;
The UTOC write check flag corresponding to the track is set (set to "1"), and a timer corresponding to the track is set to a predetermined value.

When high-speed recording is started in step S34, only tracks for which the UTOC write check flag is set are recorded. Digital playback means 1
The CD 2 mounted on the CD is rotated by the CD driving means 3 and the information recorded by the pickup 4 is taken out. At this time, the drive of the CD2 is performed at the standard reproduction speed (CD-based EIAJ C
When a digital audio interface based on P-1201 is used, it is reproduced at, for example, twice the speed of about 2.82 Mbps). The audio data reproduced by the reproducing circuit 5 is processed by ATRAC by the recording circuit of the digital recording means 6 as digital data which has been subjected to processing such as decoding and error correction.
(Registered trademark) or the like, and the MD 9 can be recorded on the MD 7 by the pickup 9, the magnetic head 9b, etc.
Also, this is also recorded at twice the standard recording speed.

In step S35, UTOC writing is performed on the track on which recording has been completed, and the UTOC writing check flag of the track on which UTOC writing has been completed is reset. This operation may be performed every time the recording of one track is completed, or may be performed at the end of all the tracks that have been recorded.

In step S36, when the recording medium for recording becomes insufficient during recording and recording cannot be performed in the middle of a certain track, a message to that effect is displayed (not shown). Reset the timer for the track and for any unrecorded tracks thereafter.

Then, the flow goes to step S38 to check whether there is a change in the track (song) to be recorded during the high-speed recording.
Return to step 2 and check again whether there is any remaining counter value for the changed song.

If recording cannot be performed in the middle of a certain track in step S36, the UTOC write check flag remains for that track and the tracks thereafter, and the timer has been reset in step S37. When a new recording medium is mounted on the digital recording means 6 and a high-speed recording instruction is issued in step S31, the remaining UTOC write check flags are used for the tracks which could not be recorded by the DISK FULL last time, and the timer was used in the previous step S37. Has been reset, high-speed recording is started in step S34, and the remaining tracks are recorded on the added recording medium.

The timer current values t1 to tk stored in the memory means 15 in correspondence with k pieces of track (song) information.
Means that the corresponding track (song) m starts recording from the initially set predetermined time (recording inhibition time, for example, 74 minutes) Tc, and the timer value tm is determined based on information from the counter means 13. .. 74 minutes, 73 minutes... Are subtracted with the passage of time, and the updated data (equivalent to the high-speed recording restart waiting time) is newly stored in the memory means 15 each time. This subtraction is continued even after the recording of the track (song) is completed, and is checked when the next recording instruction is issued. When a predetermined time Tc (74 minutes in this case) has elapsed from the start of high-speed recording of the track, the recording prohibition timer tm for this specific CD track (song) becomes 0, so that the track (song) is The data is deleted from the memory means 15 together with the specified data. However, D
When recording cannot be performed by ISK FULL, the UTOC check flag is set. At this time, the check flag and data for specifying a track (song) must be left. When both the timer and the check flag are gone, the data specifying the track (song) is deleted.

At the time when the UTOC writing is completed, if any of the timers has not become zero yet, the subtraction is continued until it becomes zero. This timer decrement is continued after the end of recording, and is checked when the next recording instruction is issued.

The updating of the timer may be performed in a short period such as one second, but in order to reduce the amount of memory, the subtraction is performed in seconds and the data is updated every minute. There is no practical problem.

As described above, in the present embodiment, digital playback is performed at a playback speed exceeding the standard speed, and the playback signal is input at the same time, and digital recording is performed by the digital recording device at a speed exceeding the same standard speed as the playback speed. In this case, a digitally recorded signal of a certain unit (generally a track (song)) reproduced by the control means is also reproduced at a reproduction speed exceeding the standard speed and digitally recorded at the same time within a predetermined time before that. The system is configured so that digital recording is not permitted unless a predetermined time has elapsed from the start of recording, and the capacity of the recording medium becomes insufficient during high-speed recording due to the introduction of the concept of a UTO write check flag. If UTOC writing is not completed and the check flag is on, recording is completed Therefore, the corresponding timer value is cleared for re-recording and the high-speed recording is treated as if it had not been performed. If the recording medium was replaced and the high-speed recording instruction was issued again, only the UTOC write check flag was set. Can be recorded without delay because the timer value is cleared.

(Embodiment 2) FIG. 4 shows Embodiment 2 of the present invention.
1 is a block diagram of a digital recording device. The difference from the first embodiment shown in FIG.
The counter means 13 has provided data for subtracting the predetermined time Tc stored in the memory means 15, but in this embodiment, the counter means 13 in FIG. Instead of a timer for each of the 15 tracks (songs), the recording start time of the song is stored. In this case, the control means 12 checks the recording start time corresponding to the track (song) at regular time intervals instead of the timer check, and calculates the difference from the current time by the calculation means 14, and the predetermined time Tc has passed. Clears the recording start time. Naturally DISK F
If the flag is set when the recording is not completed by the UL, the same effect as that of the first embodiment can be obtained by clearing the recording start time. Other configurations are the same as those in FIG. 1 and will not be described.

In the above embodiments, the case where the recorded contents of the CD are recorded on the MD at a high speed has been described. However, the present invention can be carried out even if one or both of the recording media on the reproducing side and the recording side are different. Also, the method of specifying a numerical value such as a predetermined time or a high-speed magnification or a track (song) is merely an example, and can be arbitrarily changed and executed. For example, in this embodiment, the number of tracks (songs) of one CD, the total performance time, the performance start time of the second track (song), and the like are checked, and the tracks (combinations) corresponding to the number of tracks on this CD are checked. Although the song is identified, the performance time of the second track may be used as a check item, or the condition may be complicated, such as adding the third track to the check item. Or DIN-31-62
ISRC (International
A method of identifying a track based on a standard recording code may be used.

The present invention can be applied to the case where the contents reproduced from one CD are recorded on one MD. A so-called double CD or double MD is used to simultaneously reproduce and record a plurality of CDs and MDs. This is a more preferable method when the MD is mounted on the recording means or when the MD is alternately mounted on the recording means and the contents of the CD are recorded as they are or edited.

[0034]

As described above, according to the digital recording apparatus of the present invention, when high-speed recording is performed by inputting the contents reproduced at a high speed, the same disk or the same song is recorded at a high speed before the high-speed recording. If the predetermined time has not elapsed since the start of recording, high-speed recording is prohibited. If recording cannot be completed to the end due to lack of capacity of the recording medium during recording, a UTOC write check flag remains and a timer corresponding to this is left. The remaining recording time is erased, and the same recording can be performed immediately even after the recording medium is replaced. This provides an advantageous effect that an easy-to-use digital recording device can be provided.

[Brief description of the drawings]

FIG. 1 is a block diagram of a digital recording device according to a first embodiment of the present invention.

FIG. 2 is a flowchart for processing one of the methods for similarly identifying a track of CD2 as a fixed unit by the identification means.

FIG. 3 is a flowchart of a timer and check flag setting process when a high-speed recording is started.

FIG. 4 is a block diagram of a digital recording device according to a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Digital reproduction means 2 Compact disk 3 CD drive means 4 CD pickup 5 Reproduction means 5a Identification means 6 Digital recording means 7 Mini disk 8 MD drive means 9a MD pickup 9b Magnetic head 10 Recording circuit 11 Microprocessor 12 Control means 13 Counter means 14 Calculation means 15 Memory means 16 Clock means

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (reference) G11B 27/10 G10L 9/00 EF term (reference) 5D044 BC02 CC06 DE03 DE12 DE17 DE23 DE29 DE50 EF05 EF06 FG18 FG24 GK08 GK12 HL07 5D077 AA23 CB06 DC04 DE08 FA01 5D110 AA14 AA27 CA04 CA09 CA16 CA19 CA32 CB04 CC03 CC04 CD10 CJ03 CJ06 CL12 DB09

Claims (2)

[Claims] 1. Digital reproduction means for reproducing a digitally recorded signal at a speed higher than a standard and outputting a digital signal; digital recording means for digitally recording a digital input signal at a speed higher than a standard; Identification means for extracting information specifying the recording signal for each fixed unit from the signal thus obtained, and information for specifying the digital recording signal of a certain unit reproduced by the digital reproduction means and identified by the identification means and a timer value. Memory means for storing a set of a predetermined time value and a check flag for checking that recording by the digital recording means has been designated; anda predetermined time value as a timer value stored in the memory means. Counter means for generating count information for counting down, and controlling each of the means and the digital reproducing means Control means for inputting a digital signal reproduced at a speed higher than the standard and controlling the digital recording means to perform digital recording at a speed higher than the standard, wherein the control means is provided before the digital recording means starts high-speed recording. Checking the timer value of the memory means and configuring the same information as that for specifying the digital recording signal of the certain unit to be recorded, which does not allow high-speed digital recording, with the remaining timer value, Means for identifying the digital recording signal of the fixed unit stored in the memory means when the digital recording means permits the digital recording signal of a certain unit reproduced by the digital reproducing means to start recording; The value of the predetermined time as the timer value stored corresponding to the above is subtracted based on the count information of the counter means. When the timer value has been started and the check flag has been reset and the check flag has been reset, the digital flag is deleted from the memory means together with the information specifying the digital recording signal of the certain unit, and the control means stores the check flag in a reproduction recording medium. When the recording of the fixed unit from the unit is completed and the recorded information is recorded on the recording medium of the digital recording means, the recording unit is reset and the fixed unit from the reproduction recording medium due to lack of the remaining time of the recording medium. If the recording is not completed, it is kept set, and the control means searches the check flag in the memory means and deletes the timer value corresponding to the check flag which has been set. Sound recording device. 2. Digital reproduction means for reproducing a digitally recorded signal at a speed higher than a standard and outputting a digital signal; digital recording means for digitally recording a digital input signal at a speed higher than a standard; Identification means for extracting information specifying a recording signal for each fixed unit from the reproduced signal; clock means for outputting the current time; digital recording of a predetermined unit reproduced by the digital reproduction means and identified by the identification means Memory means for storing a set of information specifying a signal, a recording start time obtained by the clock means, and a check flag for checking that recording by the digital recording means has been designated; and storing in the memory means. Calculating means for calculating the elapsed time from the recorded recording start time and the current time of the clock means; Control means for inputting a digital signal reproduced at a speed higher than the standard by the digital reproduction means and controlling the digital recording means to perform digital recording at a speed higher than the standard, wherein the control means reproduces by the digital reproduction means. The difference between the recording start time for each fixed unit and the current time of the clock means stored in correspondence with the information specifying the digital recording signal of a certain fixed unit is calculated by the calculating means for each fixed time. If the predetermined time is exceeded, the digital recording signal of the certain unit is deleted from the memory together with the information specifying the digital recording signal.The control unit checks the recording start time of the memory unit before the high-speed recording by the digital recording unit starts. If the recording start time remains, high-speed digital recording is not permitted. The recording is reset when the recording of a certain unit from the reproduction recording medium is completed and the recorded information is recorded on the recording medium of the digital recording means, and the recording from the reproduction recording medium is completed due to a shortage of the remaining time of the recording medium. If not, the digital recording device is kept set, and the control means searches the check flag in the memory means and deletes the recording start time corresponding to the set check flag.