JP2002057983A - Information signal recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information signal recording device that records an information signal of a digital signal form to a recording medium without exceeding the capability of a digital recording means such as an information quantity of the information signal of the digital signal form and special reproduction data. SOLUTION: The information signal recording device is provided with a discrimination circuit that discriminates an information quantity of a received information signal of a digital signal form or its type and discriminates and selects a recording mode such as a recording rate depending on the discrimination result.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an information signal recording apparatus for recording an information signal in the form of a digital signal and an information signal in the form of an analog signal.

[0002]

2. Description of the Related Art In recent years, with the advance of digital signal processing technology, broadcasting of digital signal type information signals using terrestrial broadcasting and satellite broadcasting has started, and both information signals of current analog signal type and digital signal type have been recorded. A recording / reproducing device (VTR) having a function of reproducing / reproducing has been proposed.

Then, a recording / reproducing apparatus (Japanese Patent Laid-Open No. 8-63875) for automatically discriminating the recording formats of the digital signal form and the analog signal form and the digital signal form and the analog signal form based on the discrimination of the magnetic tape are automatically performed. Recording / reproducing device (Japanese Patent Laid-Open No. 8-357)
No. 368) is disclosed.

[0004]

These conventional devices are:
When the information amount (signal amount) of an information signal in the form of a digital signal received (input) from the outside exceeds the capability of the digital recording means, or special reproduction data is created from the digitally compressed reference signal and received from the outside. An effective recording method for recording special reproduction data or the like from the (input) information signal in the form of a digital signal and the digitally compressed reference signal lacks consideration.

SUMMARY OF THE INVENTION An object of the present invention is to record an information signal in the form of a digital signal on a recording medium and store the information amount of the information signal in the form of a digital signal and special reproduction data without exceeding the capability of the digital recording means. It is an object of the present invention to provide an information signal recording device capable of effectively utilizing a recording medium.

[0006]

SUMMARY OF THE INVENTION The present invention provides an interface circuit for inputting an externally input digital signal type information signal, and a digital signal type signal for recording the input digital signal type information signal on a recording medium. This can be achieved by providing a discriminating circuit for discriminating the information amount or type of an input digital signal in the form of a digital signal in an information signal recording device comprising a circuit for recording in the form of a digital signal.

[0007]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing a circuit configuration of a main part of a cassette tape type magnetic recording and reproducing apparatus (VTR) according to an embodiment of the present invention.

In FIG. 1, 1 is an external digital signal input / output terminal, 3 is an interface circuit for inputting / outputting digital signals, 4 and 5 are digital information signal recording / reproduction switching circuits, and 6 is a digital information signal decoding circuit. A decoding circuit for generating an analog information signal, for example, an MPEG decoder, 8 is an addition circuit for creating data for special reproduction from the input digital information signal and adding this data to the input digital signal, 9 is a digital circuit Transfer rate discrimination circuit for digital signals input from the interface,
An encoding circuit 12 encodes an analog information signal into a digital information signal, for example, an MPEG encoder,
An input switching circuit 13 switches between a digital information signal from a digital interface and a digital information signal obtained by encoding an analog information signal. A digital signal recording / reproduction switching circuit 14 records and reproduces a digital information signal.
5 is a system control circuit for controlling the system, for example, a microcontroller; 16 is a signal processing circuit for generating recorded digital signal form information when recording a digital information signal and restoring the recorded digital signal form information to a digital information signal during reproduction; 17 Is a digital signal head switching circuit for switching control of a rotary head for recording on a recording medium, 18 is a control signal processing circuit for controlling traveling of the recording medium, 19 is an operation circuit section for receiving an external operation, for example, an operation button circuit , 20 is a display circuit for displaying the operation state of the recording / reproducing apparatus, for example, a display tube or a liquid crystal display circuit, 21 is a switching circuit for switching between digital information signal recording and analog information signal recording, 22 is an external analog video signal input terminal, 23 Is an analog video signal receiving unit such as U
V tuner and BS tuner circuit sections, 24 and 25, a video signal input switching circuit for switching between an external analog video signal, an analog video signal obtained by decoding a digital information signal from a digital interface, and an analog video reception signal;
6 is an analog video signal recording / reproduction switching circuit, 27 is an analog video signal recording / reproduction processing circuit, 28 is a head switching circuit, 29 is an S-VHS signal discriminating circuit, 30 is a control signal head, and 31 is a digital / HiFi signal head. It is. Note that the digital head and the Hi-Fi head may be configured separately. 32 is an analog video signal head, 3
3, an audio signal head; 34, a recording medium such as a cassette tape (magnetic tape); 35, an analog video signal external output terminal for outputting an analog video information signal to an external device;
36 is an external analog audio signal output terminal for outputting an analog audio information signal to an external device, 37 is an analog audio signal receiving unit such as a UV tuner or a BS tuner circuit unit,
Reference numerals 8 and 39 denote an external analog audio signal, an analog audio signal obtained by decoding a digital information signal from a digital interface, and an audio signal input switching circuit for switching an analog audio reception signal; 40, an analog audio signal recording / reproduction switching circuit; Signal recording / reproduction processing circuit, 4
Reference numeral 2 denotes an analog audio signal external output terminal, and reference numeral 43 denotes a servo circuit for controlling a recording medium speed of the recording head, for example, a servo circuit for controlling a rotary head and a tape feed.

First, a system for recording an information signal in the form of a digital signal on a cassette tape in the form of a digital signal will be described in accordance with the signal flow. A digital signal input from an external digital signal input / output terminal 1 is used as an input signal in the form of digital information by an interface circuit 3 for inputting / outputting a digital signal. Digital signal recording / reproduction switching circuit 1 for selecting (selecting an external digital signal input) and recording and reproducing digital information signals.
4 (switch to the recording mode), creates data for special reproduction from the input digital information signal, and adds the special reproduction data to the input digital information signal. And a digital information signal of special reproduction data is input to the signal processing circuit 16.

A digital signal from the interface circuit 3 for inputting / outputting a digital signal is input to a bit rate discriminating circuit 9 to check the information amount (signal amount) of the digital signal, and transmits the checked result to the system control circuit 15. I do. The bit rate discriminating circuit 9 can also discriminate the type of the digital signal in the form of digital information input or the information of the maximum transfer rate described in the digital signal, and the packet transfer time for transferring the digital signal in digital information form. May also be determined.

The system control circuit 15 determines an appropriate recording mode for recording in digital signal form based on the information amount (signal amount) of the input digital signal and the information amount (signal amount) of the special reproduction data digital signal. I do.

The information amount (signal amount) of the input digital signal
If the information amount (signal amount) of the digital signal of the special reproduction data exceeds the allowable information amount that can be recorded and cannot be recorded,
The system control circuit 15 creates special reproduction data,
The addition circuit 8 stops the addition by the addition stop control, and records only the information amount (signal amount) of the input digital signal. Alternatively, it is determined whether or not the input digital signal can be recorded based on the currently set recording mode and whether or not the special reproduction data is recorded.

Further, it is also possible to display the information amount and the type of the input digital signal, so that the user can set an appropriate recording mode or whether or not to record the special reproduction data. Recording mode, whether or not special playback data is added, whether or not recording is possible, or the amount of information of the input digital signal,
The type can be displayed via the display unit 20 or, although not shown, can be displayed on an on-screen display.

The system control circuit 15 controls the servo circuit 43 to run the cassette tape 34 at a tape speed corresponding to the recording mode determined from the information amount (signal amount) of the input digital information signal and the digital signal of the special reproduction data. Control. Further, the system control circuit 15 controls the control signal processing circuit 18, and records a control signal in digital signal form recording mode on the cassette tape 34 by the control signal head 30.

A digital signal from the digital signal recording / reproducing switching circuit 14 is modulated by a signal processing circuit 16, and a digital signal head switching circuit 17 controlled by a system control circuit 15 selects a signal head.
A digital signal is selected by the Fi signal switching circuit 21, and the cassette tape 34 is selected by the digital / HiFi signal head 31.
Is recorded in digital signal form.

Next, a system for converting an information signal in the form of a digital signal into an analog signal and recording it on a cassette tape will be described in accordance with the flow of signals. A digital signal input from an external digital signal input / output terminal is input as an input signal to an input switching circuit 13 for switching between a digital information signal and a digital information signal obtained by encoding an analog information signal by an interface circuit 3 for inputting and outputting a digital signal; The information amount of the information signal in the form of a digital signal which is input to and received by the bit rate determination circuit 9 is checked. As a result of checking the amount of information, when determining that the amount of information exceeds the amount of information that can be recorded in the form of a digital signal, the bit rate discriminating circuit 9 transmits a signal incapable of recording the digital signal form to the system control circuit 15. The system control circuit 15 receives the digital signal form unrecordable signal from the bit rate discriminating circuit 9 or calculates a value obtained by adding the information amount (signal amount) of the digital signal of the trick play data.
When it is determined that the amount of information that can be recorded in digital signal form is exceeded, the servo circuit 43 is controlled so that the cassette tape 34 runs at the tape speed of analog signal form recording. Further, the system control circuit 15 controls the control signal processing circuit 18 and records a control signal in an analog signal recording mode on the cassette tape 34 by the control signal head 30.

An information signal in the form of a digital signal from an interface circuit 3 for inputting / outputting a digital signal input from an external digital signal input / output terminal is:
The signal is transmitted to the decoding circuit 6 via a digital signal recording / reproducing switching circuit 5 of a different system from the input switching circuit 13 to convert the digital signal form into an analog signal form, and transmit the analog circuit form.

The analog video signal in the information signal converted into an analog signal form by the decode circuit 6 is supplied to an analog video signal recording / reproduction switching circuit 26 through a video signal input switching circuit 24 and a video signal input switching circuit 25, The video signal recording / reproduction switching circuit 26 selects and supplies it to the analog video signal recording / reproduction processing circuit 27. The analog video signal recording / reproducing processing circuit 27 converts this analog signal into a video low frequency conversion FM signal, and selects a head corresponding to the tape speed by an analog video signal head switching circuit 28 controlled by the system control circuit 15. As a result, the analog video signal is recorded on the cassette tape 34 by the analog video signal head 32 in the same manner as in a normal VTR.

The analog audio signal in the information signal converted into the analog signal form by the decoding circuit 6 is passed through an audio signal input switching circuit 38 and an audio signal input switching circuit 39, and the analog audio signal recording / reproduction switching circuit 40
The analog audio signal recording / reproduction switching circuit 4
0, the analog audio signal recording / reproduction processing circuit 41
To supply. Analog audio signal recording / reproduction processing circuit 41
The analog audio signal is converted into a cassette tape 34 in the form of an analog signal by a digital / Hi-Fi signal head 31 or an audio signal head 33 in the same manner as a normal VTR.
To record.

The necessity of the conversion of the recording signal format described above may be automatically controlled. However, the user designates from the operation unit 19 that the digital signal is converted into the analog signal format and recorded. Is also good.

Next, a system for converting an information signal in the form of an analog signal into a digital signal and recording it will be described in accordance with the flow of signals. An external analog video signal input unit such as an external input terminal 22, an analog video signal receiving unit such as a UV tuner or a BS tuner circuit unit, a video output 23 of these tuners, and a decode circuit 6 which decodes a digital information signal to generate an analog information signal. The analog video information is switched by video signal input switching circuits 24, 25 and 26, and the selected analog video information encodes the analog information signal into a digital information signal.
Output to 2. Similarly, for the audio, an external analog audio signal input unit, for example, the external input terminal 36, UV / BS
An analog audio signal receiving unit, for example, a UV tuner or a BS tuner circuit unit, outputs the audio output 37 of these tuners, the analog audio information from the decoding circuit 6 which decodes the digital information signal and generates an analog information signal is output from an audio signal input switching circuit 38, The switching is performed by 39 and 40, and the selected analog audio information is output to the encoding circuit 12 that encodes the analog information signal into a digital information signal.

An encoding circuit 12 for encoding an analog information signal into a digital information signal converts an analog video signal and an audio signal into a digital information signal, and encodes the digital information signal from the digital interface and the analog information signal. Is selected by the input switching circuit 13 (selection of conversion from analog information signal to digital signal), and the information signal in digital signal form is recorded as a digital form signal in the same manner as a system for recording on a cassette tape in digital form. .

Next, a system for converting a reproduced information signal in the form of an analog signal into a digital signal and outputting the converted signal will be described in accordance with the flow of signals. The control signal reproduced by the control signal head 30 in the reproduction of the cassette tape 34 is shaped by the control signal processing circuit 18 and sent to the system control circuit 15 to determine the tape speed. When the system control circuit 15 determines that the tape speed is in the analog signal mode,
The servo circuit 43 is controlled so that the cassette tape 34 runs at the tape speed in the analog signal recording mode,
Also, F reproduced by the analog video signal head 32
The head selection control by the head switching circuit 28 is executed so as to output a continuous FM signal in which the M signal is selected. The reproduced FM signal is converted into an analog video signal in the form of an analog signal by an analog video signal recording / reproducing processing circuit 27 and input to the encoder circuit 12 of a digital circuit system. The reproduced FM signal is supplied to an S-VHS detection circuit 29 to perform carrier detection, thereby detecting whether or not the mode is the S-VHS mode. 15 to be sent. The encoder circuit 12 converts a video signal in an analog signal form into a digital signal form. An audio signal in the form of an analog signal reproduced from the cassette tape 34 by the digital / Hi-Fi signal head 31 or the audio signal head 33 is supplied to the audio signal recording / reproduction processing circuit 41 and the encoding circuit 12.
Output to

The encoder circuit 12 records the video signal and the audio signal in the form of a digital signal in a digital signal recording /
The digital signal is transmitted from the interface circuit 3 for inputting / outputting the digital signal through the reproduction switching circuit 4 to the outside via the digital signal input / output terminal 1.

For a system in which an input analog information signal is recorded in the form of an analog signal as it is and the reproduced analog information signal is output in the form of an analog signal as it is,
The description is omitted because it is the same as the conventional device.

The present invention relates to a magnetic recording / reproducing apparatus without the analog video signal receiving section 23, a magnetic recording / reproducing apparatus without the encode circuit 12, and a decode circuit 6.
The present invention can also be implemented in a magnetic recording / reproducing apparatus not equipped with the above, or a magnetic recording / reproducing apparatus not equipped with the engorder circuit 12 and the decode circuit 6. Furthermore, the present invention can be implemented in a recording / reproducing apparatus other than the VTR, for example, a recording / reproducing apparatus using a magnetic disk, an optical disk, a semiconductor memory, or the like.

Next, a method of recording on a magnetic tape will be described. FIG. 2 shows a recording pattern of one track. 10
3 is a subcode recording area for recording subcodes such as time information and program information, 107 is a data recording area for recording digital information signals, 102 and 106 are preambles of the respective recording areas, and 104 and 108 are respective recording areas. , 105 is a gap between recording areas, and 101 and 109 are margins at the track ends.

FIG. 3 shows a block configuration of the data recording area 107. 120 is a synchronization signal, 121 is ID information, 12
2 is data, and 123 is a parity (C1 parity) for the first error detection and correction. For example, the synchronization signal 120
Is 2 bytes, ID information 121 is 3 bytes, data 122
Is composed of 99 bytes, the parity 123 is composed of 8 bytes, and one block is composed of 112 bytes.

FIG. 4 shows the structure of the ID information 121. 1
31 is a group number, 132 is a track address, 13
Reference numeral 3 denotes a block address in one track, and 135 denotes a parity for detecting an error in the group number 131, the track address 132, and the block address 133.
The block address 133 is an address for identifying a block in each recording area. For example, in the data recording area 107, it is 0 to 335. Track address 1
32 is an address for identifying the track,
For example, by changing the address in units of one track or two tracks and setting it to 0-5 or 0-2, six tracks can be identified. Group number 131
Is changed in the unit of 6 tracks identified by the track address 132 and is set to 0 to 15 to obtain 96
Tracks can be identified. The track address may be synchronized with a cycle of a second error correction code described later.

FIG. 5 shows one of the data recording areas 107 in the data recording area 107.
It is a configuration of track data. Note that the synchronization signal 120
And the ID information 121 are omitted. The data recording area 107 includes, for example, 336 blocks.
The data 141 is recorded in the first 306 blocks, and the second error correction code (C2 parity) 143 is recorded in the next 30 blocks. For example, the C2 parity 143 divides data of 306 blocks × 6 tracks into 18 in units of 6 tracks, and adds 10 blocks of C2 parity to each 102 blocks. For example, a Reed-Solomon code may be used as the error correction code. Each block of 99 bytes of data includes a 3-byte header 144 and a 96-byte data 1
41.

FIG. 6 shows the header 1 of the data recording area 107.
44 is provided. The header 144 includes format information 145, block information 146, and additional information 147.

The format information 145 is information on a recording format such as a recording mode, and one information is constituted by, for example, 6 bytes of 6 blocks. And
By multiplex-recording this information a plurality of times, the detection capability at the time of reproduction is improved.

The recording mode defines, for example, a maximum recording rate. In this embodiment, when two channels are recorded at a rotational speed of 1800 rpm using four rotating heads, data of about 28 Mbps can be recorded. Here, if recording is performed once every two times, or if recording is performed using two rotating heads, the recording rate is about 14 Mbp.
s. If recording is performed once every four times, the recording rate becomes about 7 Mbps. In this case, if the tape feeding speed is set to 1/2 or 1/4, the track patterns on the tape become almost the same. Similarly, it is possible to set the maximum recording rate to 1 / n of 28 Mbps. At the time of recording, the transmission rate of the recording data is identified, and an optimal recording mode is set for recording. Then, the mode in which the recording was performed is recorded in the format information 145. For example, "1" at 28 Mbps, 14 Mbps
"2" at s, "3" at 7 Mbps, 4.7
At the time of Mbps (n = 6), it is set to “4” or the like.

The format (ID2) of the data to be recorded defines, for example, the packet length of the packet to be recorded. By controlling the amount of data to be recorded on one track in packet units and recording the recorded number, it is possible to cope with an arbitrary transmission rate. The control may be performed for one track or for a plurality of tracks. Also, by recording the packet length, it is possible to correspond to a packet of an arbitrary length.

At the time of reproduction, it is sufficient to detect the format information 31, identify the recording mode and the like, set the reproduction processing circuit to that mode, and perform reproduction.

The block information 146 contains the data recording area 1
41 is information for identifying the type of data recorded. Here, the presence / absence of the high-speed variable-speed reproduction data, the type (which speed corresponds to the high-speed variable-speed reproduction data), the order of the high-speed variable-speed reproduction data, and the like are recorded. By doing so, it is possible to easily cope with high-speed variable-speed reproduction.

The additional information 147 is composed of, for example, 6 bytes of 6 blocks to constitute one piece of information. The first 1 byte is an item code indicating the type of information, and the remaining 5 bytes are data. Data can be recorded. For example, information such as the recording time and the type of the recording signal are recorded. Here, detailed information on the high-speed variable-speed reproduction data may be recorded.

FIG. 7 shows a digital compressed video signal transmitted in a packet format of 188 bytes in the data recording area 14.
1 is an example of the configuration of a block when recording data in No. 1; In this case, 4-byte time information 125 is added to make 192 bytes, and one packet is recorded in two blocks. Time information 1
25 is information on the time when the packet was transmitted. That is, the time when a packet (the head) is transmitted or the interval between packets is counted by a reference clock, the count value is recorded together with the packet data, and the interval between the packets is determined based on the information at the time of reproduction. , The data can be output in the same form as when it was transmitted. In the case of high-speed variable-speed reproduction data, it is necessary to match the timing at which the time information 25 is reproduced.

FIG. 8 shows an example of the arrangement of special reproduction data. Reference numeral 310 denotes data for normal reproduction, 311 denotes data for forward special reproduction, and 312 denotes data for reverse special reproduction.
At the time of special reproduction, the group number 1 of the reproduced block
31, track address 132, block address 13
3, the position where the head is scanning is detected, and based on this information, the servo circuit 43 performs control so that the head can reproduce the forward special reproduction data 311 or the reverse special reproduction data 312.

By recording the special reproduction data, it is possible to perform the special reproduction at the time of reproduction, but the area for recording the data for normal reproduction is reduced. Table 1 shows the maximum recording rate of normal reproduction data when recording and not recording special reproduction data.

[0042]

[Table 1]

The system control circuit 15 compares the information amount of the input digital signal with the maximum recording rate shown in Table 1 and determines an appropriate recording mode and whether or not the special reproduction data is recorded. At this time, if recording is possible in the currently set state, recording is performed as it is, and if recording is not possible, the mode may be changed to a recordable mode. The change of the recording mode may include the recording mode and the presence / absence of recording of the special reproduction data. However, it is necessary to determine an appropriate recording mode based on the currently set presence / absence of the special reproduction data. Can also. Alternatively, it is also possible to determine only the presence or absence of recording of the special reproduction data in the state of the currently set recording mode.

When it is determined whether or not the input digital signal can be recorded, the recording is performed according to the currently set recording mode and whether or not the special reproduction data is recorded. If recording is not possible, it indicates that recording is not possible. At this time, if the information amount and type of the input digital signal, or the current recording mode, the presence / absence of recording of the special reproduction data, and the maximum recording rate can be displayed, an appropriate recording mode and special reproduction data can be displayed. It is possible to set whether or not to record.

The information amount and type of the input digital signal and the current recording mode, the presence / absence of recording of special reproduction data, and the maximum recording rate can be displayed simultaneously or individually, and the user can select the appropriate recording mode or special recording mode. It is also possible to set whether to record the reproduction data. If the information amount or type of the input digital signal cannot be confirmed, the recording may be performed as it is or a message that the confirmation cannot be performed may be displayed.

[0046]

According to the present invention, the information amount (signal amount) of an input digital signal can be set by setting the presence or absence of recording of special reproduction data, setting an appropriate recording mode, or switching to analog recording means. Optimum recording can be performed according to the conditions. Further, the recording medium can be effectively used.

[Brief description of the drawings]

FIG. 1 is a block diagram of a cassette tape type magnetic recording / reproducing apparatus showing an embodiment of the present invention.

FIG. 2 is a diagram showing a recording pattern of one track.

FIG. 3 is a configuration diagram of a block of a data recording area.

FIG. 4 is a configuration diagram of ID information.

FIG. 5 is a configuration diagram of data of one track in a data recording area.

FIG. 6 is a configuration diagram of a header of a data recording area.

FIG. 7 is a configuration diagram of a block of one packet.

FIG. 8 is a diagram showing an arrangement of high-speed variable-speed reproduction data.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... External digital signal input part, 3 ... Digital signal input switching circuit, 4, 5 ... Digital signal recording / reproduction switching circuit, 6 ... Decoding circuit, special reproduction data creation and addition circuit, 9. ..Information transfer rate discriminating circuit, 12 ... encoding circuit, 13 ... input switching circuit, 14 ... digital recording / reproducing switching circuit, 15 ... system control circuit, 16 ...
D-VHS recording / reproducing processing circuit, 17: digital signal head switching circuit, 18: control signal processing circuit,
19: operation unit, 20: display unit, 21: digital / analog signal switching circuit, 22: external analog video signal input unit, 23: UV / BS analog video reception unit, 24,
25 ... Video signal input switching circuit, 26 ... Analog video signal recording / playback switching circuit, 27 ... Analog video signal recording / playback processing circuit, 28 ... Head switching circuit, 29 ... S-
VHS signal discriminating circuit, 30 control signal head, 31 digital / Hi-Fi head, 32
Analog video signal head, 33 ... audio signal head, 3
4: cassette tape (magnetic tape), 35: analog video signal external output unit, 36: external analog audio signal input unit, 37: UV / BS analog audio signal receiving unit, 3
8, 39 ... audio signal input switching circuit, 40 ... audio signal recording / reproduction switching circuit, 41 ... audio signal recording / reproduction processing circuit, 42 ... analog audio signal external output unit, 43 ...・ Servo circuit

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 5/783 H04N 5/782 Z 5/92 H (72) Inventor Hiroshi Honjo Yoshida, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture No. 292, Hitachi Image Information Systems Co., Ltd. (72) Inventor Yukio Sato 292, Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Within Hitachi Image Information Systems Co., Ltd. (72) Kenichiro Uemura 1410, Inada, Hitachinaka City, Ibaraki Prefecture F-term (reference) in Digital Media Products Division, Hitachi, Ltd. FG18 FG23 GK07 GK10 GK12 JJ01 JJ02 5D080 AA03 AA07 BA01 BA03 DA04 EA02 GA02

Claims (13)

[Claims] An information signal recording apparatus comprising: an interface circuit for inputting an information signal in the form of a digital signal; and a recording circuit for converting the information signal from the interface circuit into a recording digital signal form and recording the information on a recording medium. An information signal recording device, comprising: a discriminating circuit for discriminating the information amount or type of the input digital signal information signal. 2. The information signal recording apparatus according to claim 1, wherein said discriminating circuit discriminates an information amount or a type from information described in the input information signal in the form of a digital signal. 3. The information signal recording apparatus according to claim 1, wherein said discriminating circuit discriminates an information amount from a transfer speed of said input information signal in the form of a digital signal. 4. The information signal recording according to claim 1, wherein the input information signal in the form of a digital signal is at least one of a digital compressed video signal, a digital compressed audio signal and a digital compressed information signal. apparatus. 5. The information signal recording apparatus according to claim 1, wherein said information signal recording apparatus has a plurality of recording modes having different maximum recording rates, and said control means selects said recording mode in accordance with the information amount or type determined by said determination circuit. The information signal recording device according to claim 1, further comprising a circuit. 6. An information signal recording apparatus according to claim 1, wherein said information signal recording apparatus is capable of recording said reproduction information signal with special reproduction data added thereto, and said information amount or type determined by said determination circuit. 2. An information signal recording apparatus according to claim 1, further comprising a control circuit for controlling whether or not to record the special reproduction data in accordance with the information. 7. An information signal recording apparatus according to claim 1, further comprising display means for displaying the amount or type of information determined by said determination circuit. 8. The information signal recording apparatus according to claim 5, further comprising display means for displaying a recording state selected by said control circuit. 9. The information signal recording apparatus according to claim 1, wherein the information signal recording apparatus has a plurality of recording modes having different maximum recording rates, and performs recording in a recording mode set by the information amount or type determined by the determination circuit. 2. The information signal recording apparatus according to claim 1, further comprising a control circuit for judging whether the information signal recording is possible. 10. The information signal recording apparatus according to claim 1, wherein said information signal recording apparatus is an information signal recording apparatus capable of recording said information signal with special reproduction data added thereto. 2. An information signal recording apparatus according to claim 1, further comprising a control circuit for judging whether or not recording can be performed with additional data. 11. The information signal recording apparatus according to claim 9, further comprising display means for displaying a result of the judgment by said control circuit. 12. A decoding circuit for decoding the input digital signal information signal to obtain an analog signal information signal, and an analog recording circuit for recording the analog signal information signal on the recording medium. The information signal recording device according to claim 1, further comprising: 13. A control circuit for controlling whether or not to perform recording with an information signal in the form of an analog signal in accordance with the amount or type of information determined by the determination circuit. The information signal recording device according to the above.