JP2003281855A - Information recording device and information recording and reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide CM Skip function in an optical information recording medium containing DVD. <P>SOLUTION: Recording is interrupted in the way, the interrupted positional information in accordance with the interrupted data position is extracted, the recording is reopened on the basis of the interrupted positional information at the time of reopening the recording and, thereby, the CM Skip function in the optical information recording medium containing DVD is realized. When the information temporally stored in buffer memory 11 in the device is recorded on the optical information recording medium 1 containing DVD, the recording which is quicker than the transmission rate of information sent by broadcasting is enabled and, therefore, until catching Up to real time information, the recording with the quicker transmission rate is performed. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information recording apparatus and an information recording / reproducing apparatus suitable for use in recording a television program on an optical information recording medium such as a DVD while skipping an advertisement. Regarding the device.

[0002]

2. Description of the Related Art A conventional information recording / reproducing apparatus typified by a magnetic recording / reproducing apparatus focuses on only the audio system of a video signal and deletes and records an advertisement (CM) by an audio multiplex signal of the video signal. Or fast forward playback. However, for example, if there is a commercial in a program of stereo broadcasting and you do not want to record the commercial, recording is artificially interrupted,
Alternatively, if the CM is mistakenly recorded, fast-forward reproduction of the CM portion is required at the time of reproduction.

[0003]

By the way, for example, when an attempt is made to record a recordable DVD + R / RW or DVD-R / RW while maintaining compatibility with a read-only DVD-ROM (DVD-VIDEO format). , It is necessary to perform sequential writing. This is because the DVD player is configured to transmit the video signal to the display device by continuously reproducing the information in the DVD. Therefore, when trying to execute the above-mentioned CM cancel function, it is necessary to continuously record information without interruption. Further, if the spindle motor is rotated when recording is interrupted for a long time such as during CM, useless power is required.

The present invention has been made in view of the above-mentioned circumstances, and recording is interrupted midway, and interrupted position information corresponding to the interrupted data position is extracted, and based on the interrupted position information when recording is restarted. By restarting recording, DV
An object of the present invention is to provide an information recording device and an information recording / reproducing device that realize a CM skip function in an optical information recording medium including D. Further, when the information temporarily stored in the buffer memory in the device is recorded on the optical information recording medium including the DVD, it is possible to record the information faster than the transfer rate of the information transmitted by broadcasting. Another object of the present invention is to provide an information recording apparatus and an information recording / reproducing apparatus which can respond by recording at a high transfer rate until catching up with real-time information.

[0005]

In order to solve the above problems, an invention according to claim 1 is an information recording apparatus for recording video information, which is an optical information recording medium on which the video information is recorded. Rotating means, a receiving signal storage means for temporarily storing a received signal input from the outside, a signal compressing means for compressing the signal stored in the received signal storage means, and the compressed signal Information recording means for recording video information by irradiating the optical information recording medium with a laser beam based on a signal, identification signal detecting means for detecting a specific identification signal from the received signal, and detecting the identification signal Then, recording interruption means for interrupting recording on the optical recording medium and interruption position information for detecting position information in the optical recording medium in which the recording is interrupted and storing the interruption position information. Storage means, rotation control means for stopping the rotation of the optical recording medium when the recording is interrupted, and restarting the rotation when the identification signal is no longer detected, and for restarting the rotation of the optical information recording medium An interruption position search means for searching the interruption position based on the interruption position information stored in the interruption position detection storage means, and when the interruption position is detected, the specific identification signal does not exist from the interruption position. Recording restarting means for recording a video signal based on a signal obtained by compressing a received signal from the point of time.

According to the invention described in claim 1, for example,
When recording a TV program on a DVD recording medium such as a DVD + RW, only the CM can be cut, so that only the program can be viewed during playback and the capacity of the recording medium can be saved.

According to a second aspect of the present invention, in the information recording apparatus according to the first aspect, the specific identification signal is an identification signal of bilingual broadcasting, stereo broadcasting, or EDTV2 broadcasting. To do.

According to the second aspect of the present invention, only the CM can be cut by detecting the identification signal of the bilingual broadcast, the stereo broadcast, or the EDTV2 broadcast. Therefore, only the program can be viewed at the time of reproduction. The capacity of the recording medium can be saved at the same time.

According to a third aspect of the present invention, in the information recording apparatus according to the first or second aspect, the rotation speed of the optical information recording medium in a predetermined period from the resumption of the recording is higher than that in normal recording. It is characterized by making it larger.

According to the third aspect of the present invention, when the CM is interrupted and the program is restarted, the spindle motor or the like is activated, but the video during that time is temporarily stored in the buffer memory 11 and the activation is restarted. If so, the recording can be performed smoothly by recording at a transfer rate faster than the program transfer rate, so that the program can be followed.

According to a fourth aspect of the invention, in the information recording apparatus according to the first aspect, while the recording is suspended,
It is characterized in that part of the electric power supplied to the information recording means is stopped.

According to the fourth aspect of the invention, the power can be reduced by stopping a part of the power supplied to the information recording means while the recording is suspended.

According to a fifth aspect of the present invention, an operation button in which a function button for instructing to skip a predetermined number of tracks for reproduction of the information recorded in the information recording apparatus according to the first aspect is allocated. Is provided on the remote controller or the main body of the device.

According to the invention described in claim 5, when recording, the CM is recorded as it is without being cut, and when the reproduction is performed, the C is recorded.
When the area of M is reached, the user has a mode of skipping a predetermined number of tracks by operating the main body or the remote control, so that some CMs cannot be identified by the above identification signal. At this time, the optical disc 1 can be instantaneously skipped by the remote controller or the operation button provided on the main body.

According to a sixth aspect of the present invention, in the information recording apparatus according to the first aspect, the image signal is obtained by recording the detection result information by the identification signal detecting means at a predetermined position of the optical information recording medium. It is characterized in that the reproducing order of the reproducing means is controlled.

According to the invention described in claim 6, even in the case where the CM cannot be identified such as in stereo broadcasting, only the CM can be instantaneously skipped during reproduction. Further, by using the seamless playback function, which is a feature of DVD, the user can realize a complete CM skip function by changing the playback order even if there is a portion where the program can be viewed or cannot be identified during playback. .

[0017]

1 is a block diagram showing the internal structure of an information recording apparatus of the present invention. Functionally roughly dividing the blocks shown here, the CPU 14 serving as a control center
All blocks above are information recording systems, and below are broadcast receiving systems that are recording sources. The broadcast receiving system includes an identification signal detection circuit 15, a tuner circuit 16, and an antenna 17. The identification signal detection circuit 15 detects a specific identification signal from the broadcast received via the antenna 17 and the tuner circuit 16 and notifies the CPU 14 of it. Here, the bilingual broadcast or stereo broadcast, or EDTB2 is used. This is a broadcast identification signal.

The information recording system is a DVD-R / RW or a DVD.
A rewritable optical disc 1, a pickup unit 2 mounted with semiconductor lasers having different wavelengths to enable recording and reproduction of optical discs 1 having different standards, a motor driver 3, a laser controller 4 (for CD-R / RW), 5
(For DVD), analog front end 6, ATIP decoder 7, CD / DVD decoder 8, digital servo mechanism 9, CD / DVD encoder 10, buffer memory 11, buffer manager 12, ATAPI (AT / Attac)
hed / Packet / Interface) Interface 13.

The optical disk 1 is rotationally driven by a spindle motor (not shown), and this spindle motor is controlled by the motor driver 3 and the digital servo mechanism 9 so that the linear velocity becomes constant. This linear velocity can be changed stepwise. The pickup unit 2 has a semiconductor laser (not shown), an optical system, a focus actuator, a track actuator, a light receiving element, and a position sensor (not shown) built therein.
To irradiate. The pickup unit 2 can be moved in the sledge direction by a seek motor. In these focus actuator, track actuator, and seek motor, the motor driver 3 and the digital servo mechanism 9 position the laser light spot at a desired position on the optical disk 1 based on the signals obtained from the light receiving element and the position sensor. Controlled as.

When reading, the pickup unit 2
The reproduced signal obtained by the above is amplified by the analog front end 6 such as a read amplifier and binarized, and then the CD
/ DVD decoder 8 inputs. The input binarized data is transferred to the EFM in the CD / DVD decoder 8.
(Eight ・ to ・ Fourteen ・ Modulation) Demodulated. In addition,
The recording data is grouped by 8 bits and subjected to EFM modulation. In this EFM modulation, 8 bits are converted to 14 bits and 3 combined bits are added to make a total of 17 bits. In this case, the combined bits are attached so that the numbers of "1" s and "0" s so far are equal on average. This is referred to as "suppression of DC component", and the fluctuation of the slice level of the reproduction signal that has been DC cut is suppressed. The demodulated data is deinterleaved and error-corrected. After that, the data is temporarily stored in the buffer memory 11 by the buffer manager 12, and in the state where it is prepared as sector data, it is transferred all at once to the host computer (not shown) via the ATAPI interface 13.

On the other hand, at the time of writing, the data sent from the host computer through the ATAPI interface 13 is temporarily stored in the buffer memory 11 by the buffer manager 12. Then, the write operation is started with a certain amount of data accumulated in the buffer memory 11. In this case, the laser spot must be positioned at the write start point before that. This point is obtained by the wobble signal previously recorded on the optical disc 1 due to the meandering of the track. The wobble signal includes absolute time information called ATIP, and this information is extracted by the ATIP decoder 7. Further, the sync signal generated by the ATIP decoder 7 is input to the CD / DVD encoder 10 to enable the writing of data to an accurate position on the optical disc 1. Data in the buffer memory 11 is added with an error correction code and interleaved in the CD / DVD encoder 10 and recorded on the optical disc 1 via the laser controllers 4 and 5 and the pickup unit 2.

2 and 3, the identification signal detecting means 15 is C
Regarding the procedure for identifying the CM in cooperation with the PU 14, the method for identifying the stereo broadcast and the method for using the EDTV2 signal are described respectively. In FIG. 2, the presence / absence of a bilingual broadcast identification signal (BI) is checked (S201), and if a BI signal is detected, the presence or absence of a stop command is determined (S205). It ends (S206). That is, if there is a BI signal, recording is continued until there is a stop command, if there is no BI signal, recording is stopped (S202), and if a BI signal is detected again, recording is restarted (S204). FIG. 3 shows FIG.
The identification signal (ED) of the EDTV2 broadcast is used instead of the BI signal determination step shown in FIG.
The presence or absence of the V identification signal (ED) is checked (S30
1) If the BI signal is detected, the presence / absence of a stop command is determined (S305), and if there is a stop command, recording is ended (S306). That is, if there is an ED signal, recording is continued until there is a stop command, if there is no ED signal, recording is interrupted (S302), and if a BI signal is detected again, recording is restarted (S304).

Using these signals, a TV program is DVD
When recording on a large-capacity writing disk such as + RW, CM
Only can be removed and recorded. Further, while the CM is being flown, the CPU 14 stops the power supplied to the pickup unit 2 and a spindle motor (not shown), and starts it when the CM is restarted, thereby driving the drive for power saving. Can be provided.
At this time, when the CM is interrupted and the program is restarted, the spindle motor or the like is activated, but the video during that time is temporarily stored in the buffer memory 11 and, when the activation is restarted, a transfer rate faster than the transfer rate of the program. By recording with, you can catch up and record smoothly.

In addition, when recording, the CM is recorded as it is without being cut, and when the CM area is reproduced, the user can operate the main body or the remote controller to skip a predetermined number of tracks. There is.
Some of the CMs cannot be identified by the above-mentioned identification signal, but in that case, the optical disk 1 can be instantaneously skipped by the above-mentioned remote controller or the operation button provided on the main body. Of course, the time converted from the number of tracks to jump can be displayed on the operation button so that the user can select and skip.

In the case of a DVD type recording medium, D
It is generally recorded in the VD-Video format. A feature of this format is a seamless playback function that allows playback of MPEG (Moving, Picture, Experts, Group) streams that have not been recorded continuously without interruption.

A brief description of the seamless playback function will be added. As a function to realize a new video expression not found in conventional video media, a seamless playback function that guarantees continuous playback of two MPEG streams that are not continuously recorded on the optical disc 1 without interruption is a DVD- The VIDEO format was introduced. The seamless playback function is a simple seamless playback function that guarantees continuous playback of two MPEG streams,
It is roughly classified into a selective seamless playback function for selectively playing back a plurality of MPEG streams. The simple seamless playback function makes it possible to split-encode a long video material and provide flexibility in video encoding. Selective seamless playback function,
It has a multi-angle function and a director's cut function, and provides a new video production method. The multi-angle function is a function capable of freely switching the reproduction of up to 9 MPEG streams according to the user's designation, and guarantees seamless reproduction without interruption when switching the streams.

As shown in FIG. 4, a program chain (PGC) that defines a playback order is used for CM when recording a program.
This is possible by recording the position information of the cell No. 1 and programming it as PGC1 so as to jump and reproduce this cell at the time of reproduction. FIG. 5 shows an operation concept for controlling the reproduction order.

As described above, according to the present invention, the recording is interrupted on the way, the interrupted position information corresponding to the interrupted data position is extracted, and the recording is restarted based on the interrupted position information when the recording is restarted. The present invention realizes a CM skip function in an optical information recording medium including a DVD, and when information temporarily stored in a buffer memory in the device is recorded in an optical information recording medium including a DVD, Since recording can be performed faster than the transfer rate of information transmitted by broadcasting, recording can be performed smoothly by recording at a high transfer rate until catching up with real-time information.

Rotating means for rotating the optical information recording medium (motor driver 3, digital servo mechanism 9)
A reception signal storage means (buffer memory 11) for temporarily storing the reception signal, a signal compression means (CPU 14) for compressing the signal stored in the reception signal storage means, and a laser based on the compressed signal. Information recording means (pickup section 2) for recording video information by irradiating the optical information recording medium with a beam, and identification signal detection means (identification signal detection circuit 15) for detecting a specific identification signal from a received signal. A recording interruption means (CPU 14) for interrupting recording on an optical recording medium when an identification signal is detected, and an interruption for detecting position information in the optical recording medium whose recording is interrupted and storing the interruption position information. Position information storage means (CP
U14) a work memory (not shown), rotation control means (CPU14) for stopping the rotation of the optical recording medium when recording is stopped, and restarting the rotation when the identification signal is no longer detected, and optical information. When the rotation of the recording medium is restarted, the interruption position search means (CP) for searching the interruption position based on the interruption position information stored in the interruption position detection storage means.
U14) and, when the interruption position is detected, recording restart means (CPU 14) for recording a video signal based on a signal obtained by compressing a reception signal from the time when the specific identification signal does not exist from the interruption position. Is the CPU shown in FIG.
Reference numeral 14 is realized by using a work memory based on a program recorded in a program memory (not shown) and performing control in cooperation with the corresponding blocks shown in FIG.

[0030]

According to the first aspect of the present invention, for example, when recording a TV program on a DVD recording medium such as a DVD + RW, only the CM can be cut, so that only the program can be viewed at the time of reproduction. At the same time, the capacity of the recording medium can be saved.

According to the second aspect of the invention, only the CM can be cut off by detecting the identification signal of the bilingual broadcast, the stereo broadcast, or the EDTV2 broadcast, so that only the program can be viewed during playback. The capacity of the recording medium can be saved at the same time.

According to the third aspect of the present invention, when the CM is interrupted and the program is restarted, the spindle motor or the like is activated, but the video during that time is temporarily stored in the buffer memory 11 and the activation is restarted. If so, the recording can be performed smoothly by recording at a transfer rate faster than the program transfer rate, so that the program can be followed.

According to the fourth aspect of the invention, the power can be reduced by stopping a part of the power supplied to the information recording means while the recording is suspended.

According to the invention described in claim 5, when recording, the CM is recorded as it is without being cut, and the C is recorded at the time of reproduction.
When the area of M is reached, the user has a mode of skipping a predetermined number of tracks by operating the main body or the remote control, so that some CMs cannot be identified by the above identification signal. At this time, the optical disc 1 can be instantaneously skipped by the remote controller or the operation button provided on the main body.

According to the sixth aspect of the present invention, even when the CM cannot be identified, such as in stereo broadcasting, only the CM can be instantaneously skipped during reproduction. Further, by using the seamless playback function, which is a feature of DVD, the user can realize a complete CM skip function by changing the playback order even if there is a portion where the program can be viewed or cannot be identified during playback. .

[Brief description of drawings]

FIG. 1 is a block diagram showing an internal configuration of an information recording apparatus of the present invention.

FIG. 2 is a flowchart cited to explain the operation of the exemplary embodiment of the present invention.

FIG. 3 is a flowchart cited to explain the operation of the exemplary embodiment of the present invention.

FIG. 4 is an operation conceptual diagram quoted for explaining seamless reproduction according to the present invention.

FIG. 5 is a diagram cited for explaining an example of a program for controlling a reproduction order according to the present invention.

[Explanation of symbols] 1 optical disc 2 Pickup part 9 Digital servo mechanism 11 buffer memory 14 CPU 15 Identification signal detection circuit 16 tuner circuit

Front page continuation (51) Int.Cl. ⁷ Identification code FI theme code (reference) H04N 5/85 G11B 27/02 K 5D110 5/91 H04N 5/91 Z F term (reference) 5C052 AA02 AB02 CC06 DD04 EE02 EE03 5C053 FA23 JA21 KA24 LA06 LA07 5D044 AB05 AB07 BC06 CC04 DE37 DE45 EF05 GK12 5D077 AA30 BA09 BB05 DC08 EA04 5D090 AA01 BB04 CC02 DD03 HH03 5D110 AA17 AA19 AA27 AA29 BB28 CA54 CC02 CF34

Claims (6)

[Claims] 1. An information recording device for recording video information, comprising: a rotating means for rotating an optical information recording medium on which the video information is recorded, and a temporary storage of a received signal input from the outside. The received signal storage means, the signal compression means for compressing the signal stored in the received signal storage means, and the video information by irradiating the optical information recording medium with a laser beam based on the compressed signal. An information recording means for recording, an identification signal detecting means for detecting a specific identification signal from the received signal, a recording interrupting means for interrupting recording on the optical recording medium when the identification signal is detected, and the recording Interruption position information storage means for detecting position information in the interrupted optical recording medium and storing the interruption position information, and rotation of the optical recording medium when the recording is interrupted. A rotation control unit that stops and restarts the rotation when the identification signal is no longer detected, and based on the interruption position information stored in the interruption position detection storage unit when the rotation of the optical information recording medium is resumed. An interruption position search means for searching for an interruption position, and when the interruption position is detected, recording of a video signal based on a signal obtained by compressing a received signal from the time when the specific identification signal does not exist from the interruption position is recorded. An information recording apparatus comprising: a recording resuming means for performing. 2. The information recording apparatus according to claim 1, wherein the specific identification signal is an identification signal of bilingual broadcasting, stereo broadcasting, or EDTV2 broadcasting. 3. The information recording apparatus according to claim 1, wherein the rotation speed of the optical information recording medium during a predetermined period from the resumption of the recording is set to be higher than that during normal recording. 4. The information recording apparatus according to claim 1, wherein a part of the electric power supplied to the information recording means is stopped while the recording is interrupted. 5. An operation button provided with a function button for instructing to skip a predetermined number of tracks upon reproduction of information recorded by the information recording apparatus according to claim 1, is provided on the remote controller or the apparatus main body. An information recording / reproducing apparatus characterized in that 6. The information recording apparatus according to claim 1, wherein the detection result information by the identification signal detecting means is recorded at a predetermined position on the optical information recording medium to control the reproduction order of the video signal reproducing means. An information recording / reproducing apparatus characterized by: