JP4378866B2 - Recording / reproducing apparatus and recording / reproducing method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a recording / reproducing apparatus and an information transmission medium and system for reproducing or transmitting copyright-protected video information and the like, for example, DVD-RAM, DVD-RW, DVD-R (DVD Write Once (WO)), optical In a disk recording / reproducing apparatus for recording / reproducing information using an optical disk such as a magnetic disk, in particular, a magnetic recording / reproducing apparatus for recording / reproducing information using a magnetic recording medium in which a medium such as a magnetic disk cannot be taken out from the apparatus. relates suitable recording and reproducing apparatus and an information transmission medium is provided, about the particular optimum recording and reproducing apparatus and a recording and reproducing method in the case of the time shift, such that later playback copyright protected video information.
[0002]
[Prior art]
Conventionally, a copyright-protected copy of a signal compressed into predetermined data such as image data and audio data using a compression technique such as MPEG is protected for each content using a digital satellite or a digital line of the Internet. A recording / reproducing apparatus for inputting information, decompressing the information, and performing recording / reproducing is being developed.
[0003]
[Problems to be solved by the invention]
Here, paid information that is copyright-protected is prohibited from being copied and cannot be recorded. There is a problem that you cannot see paid information.
The present invention has been made in view of the above-described problems, and even copyright-protected information is temporarily recorded on a recording medium and can be reproduced for a predetermined time or number of times of reproduction. Objective.
[0004]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention provides copyright-protected video information, control information for controlling recording / reproduction of the video information, and title information of the video information or a still image as additional information related to the video information. It includes information, video information input means for inputting compressed compressed video information, and reproducing means for reproducing a monitor as the video information through the expanding means to the compressed image information, the image in the reproducing means in the normal reproduction state When the information is reproduced and the reproduction is temporarily interrupted, the control information is confirmed, and when the recording is possible, the video information, the control information, and the additional information after the reproduction is interrupted. Recording is performed on a recording medium, and it is determined whether playback is possible based on the recorded date time or the number of playbacks when the playback is resumed. Wherein a reproduction control means for permitting the reproduction of the video information, when reproducing the video information, to determine possible reproduced from the recording date time or number of times of reproduction, and reproduction times of reproduction or predetermined only once If you would said to be a playback prohibition of video information the playback control unit determines, leaving only the control information and the additional information, and change the control information to the reproduction inhibition, erasing the image information from said recording medium Or the playback prohibition means for preventing the video information from being played back and the title information or still image information as the additional information on the monitor until the video information is played back based on the control information. When the playback control means determines that playback of the video information has been prohibited due to playback only once or a predetermined number of times, the displayed additional information is displayed. In the case where the title information or still image information is deleted from the monitor, but the reproduction is not performed after the period or the number of times to be reproduced, the video as the additional information displayed on the monitor It is a recording / reproducing apparatus having additional information display means for displaying to the user that the time limit has expired without deleting the title information or still image information of the information from the monitor .
In the next invention, the copyright information includes video information, control information for controlling recording / reproduction of the video information, and additional information related to the video information including title information or still image information of the video information , and compressed. A video information input step for inputting the compressed video information; a playback step for reproducing the compressed video information on the monitor as video information via the decompression unit; and a step for causing the playback unit to reproduce the video information in a normal playback state; When the interruption of playback is instructed temporarily, the control information is confirmed, and if the recording is possible, the video information, the control information, and the additional information after the playback is stopped are recorded. When recording is performed on the medium, it is determined whether playback is possible from the recorded date time or the number of playbacks when the playback is resumed. A reproduction control step of permitting reproduction of the video information reproducing means, said when reproducing the video information, to determine possible reproduced from the recording date time or number of times of reproduction, number of times played and predetermined only once When it is determined that reproduction of the video information is prohibited, leaving only the control information and the additional information , changing the control information to reproduction prohibition, and erasing the video information from the recording medium, Alternatively, the title information or still image information as the additional information is displayed on the monitor until the reproduction prohibiting step for preventing the reproduction of the video information and the reproduction of the video information based on the control information. At the same time, when it is determined that the video information has been reproduced only once or a predetermined number of times and the reproduction of the video information is prohibited, the tie as the displayed additional information is displayed. If the video information or still image information is deleted from the monitor, but is not reproduced after the period or number of times to be reproduced, the title information of the video information as the additional information displayed on the monitor Alternatively, the recording / reproducing method includes an additional information display step of displaying to the user that the expiration date has been reached without deleting still image information from the monitor .
[0005]
BEST MODE FOR CARRYING OUT THE INVENTION
(A) Configuration and Overall Operation of the First Embodiment First, the recording / reproducing apparatus according to the present invention can be applied to an HDD recording / reproducing apparatus as shown in FIG. The HDD recording / reproducing apparatus according to the first embodiment of the present invention records and reproduces desired data such as still images, moving images, sounds, music, sub-pictures, and the like on tracks.
[0006]
Specifically, a recording magnetic field is formed on the disk 1 by the magnetic head 2, and data is recorded on the disk 1 and reproduced. Data to be recorded / reproduced is composed of sectors. One sector is composed of a total of 2064 bytes of 2048 bytes of data and corresponding address data. One ECC block (ECC: error correction) is composed of 16 sectors.
[0007]
For example, the operation unit 4 (KEY) such as a remote controller issues a recording / reproduction command in response to a user operation. The system controller 5 (SYSTEM CONT) determines a command from the operation unit 4 and controls the signal processing unit 6, the servo processor 7 (SERVO), and the switch (SW) 12.
[0008]
The preamplifier 8 (PAMP) generates a reproduction signal and a servo signal based on the reproduction output read by the magnetic head 2. The servo processor 7 generates a tracking signal based on the servo signal formed by the preamplifier 8 and supplies it to the driver 3. The driver 3 controls the tracking by driving the actuator of the magnetic head 2 based on the tracking signal.
[0009]
The tracking of the magnetic head 2 is servo-controlled by the flow of each signal of the magnetic head 2 → preamplifier 8 → servo processor 7 → driver 3 → magnetic head 2.
The spindle motor M is provided with a hall element (not shown), and a rotational position signal from the hall element is fed back to the servo processor 7 via the driver 3. The servo processor 7 controls the spindle motor M at a constant rotational speed via the driver 3 based on the speed signal generated from this rotational position signal.
[0010]
The preamplifier 8 optimizes the frequency characteristic of the reproduction signal with an equalizer and pulls in the PLL circuit. The preamplifier 8 has a jitter generation circuit that generates a jitter value based on a comparison between the bit clock of the PLL circuit and the time axis of the data. The system controller 5 is configured to take the jitter value generated by the jitter generation circuit by A / D conversion and change the correction amount of the waveform correction circuit at the time of recording based on the jitter value.
[0011]
Further, the preamplifier 8 supplies the disk speed signal generated by the PLL circuit to the servo processor 7, and the disk 1 is controlled to rotate at a constant speed via the spindle motor M by this speed signal.
[0012]
The signal processing circuit 6 converts the reproduction signal output from the preamplifier 8 into a digital signal, synchronously detects the digital signal, and decodes the reproduction signal when the reproduction output is recorded on the disk 1, Error correction processing is performed in units of one ECC block as described above to obtain an address signal and a data signal for each sector. A track buffer 9 (TB), for example, a 64 Mbit DRAM connected to the signal processing circuit 6 stores the address signal and the data signal, and absorbs the time axis of the variable transfer rate of the video signal.
[0013]
From the signal read from the track buffer 9, only the video signal to be reproduced is removed without supplying control information and additional information, and is supplied to the encoder / decoder 10 (AV ENDEC). The AV ENDEC 10 temporarily stores this signal in the buffer memory 11 which is, for example, a 64 Mbit DRAM and reads it appropriately, and the recording mode (described later) in which the signal is recorded is recorded on the disc 1. Detection is performed based on the control data, and the speed at which the signal is expanded is determined in accordance with the detected recording mode. Then, in accordance with the decompression speed, 1 GOP (group of picture) MPEG2 data composed of a plurality of ECC blocks is decompressed into an audio signal and a video signal, separated into an audio signal and a video signal, and D / A (not shown), respectively. It is converted to analog by a converter and output.
[0014]
The audio signal (A) output from the AV ENDEC 10 is input to the audio amplifier 13 via the terminal A1 of the switch (SW) 12, amplified to a predetermined signal level, and then reproduced by the speaker 14, while AV The video signal (V) output from the ENDEC 10 is input to the NTSC encoder 15 via the terminal A2 of the switch (SW) 12, and is converted into a signal conforming to a standard television signal of the NTSC system and is a monitor or television as a display. The image is supplied to and displayed on a receiver (TV) 16. Further, as will be described later, icons of contents temporarily stored are also supplied to and displayed on a monitor or television receiver (TV) 16 as a display.
[0015]
A digital broadcast wave signal received by the antenna 17 and a signal input to the Internet or the cable TV network 20 are input in units of the following packets as shown in FIG.
Control information for controlling control information playback of video information A Specifications of video information A Video title, copyright information copy management information Permit prohibited (recording prohibited, OK only once, OK a predetermined number of times)
Additional information of transmitted date / time video information A Title information source information channel of information A, information provider, address URL, transmitted date / time video information content code, type, individual number, main sub-picture, short-time video protagonist , Starring, Competition, Actor, Original, Director, Music, Production Copyright information Copying permission prohibited (Recording prohibited, OK only once)
[0016]
The digital broadcast wave signal received by the antenna 17 is supplied to one input terminal of the AV input conversion unit 19, and the packet including the audio signal / video signal compressed by MPEG or the like received by the TV tuner 18. On the other hand, the audio signal / video signal selectively received by the cable converter (modem) 21 connected to the Internet or the cable TV network 20 is supplied to the other input terminal of the AV input conversion unit 19. In the AV input conversion unit 19, a packet signal (audio signal / video signal) from the TV tuner 18 and a packet signal (audio signal / video signal) from the cable converter (modem) 21 are recorded in the HDD. A format conversion for converting to a mat is performed, and the selection is switched and supplied to the terminals (terminal B1 and terminal B2) of the switch 12, and also supplied to the AV ENDEC 10.
[0017]
The switch (SW) 12 is configured to be selectively switched by a control signal supplied from the system controller 5. When reproducing an audio signal / video signal reproduced by the DISC 1 during normal reproduction, the switch (SW) 12 is connected to the terminal A1. When the broadcast wave signal received by the antenna 17 or the Internet or cable TV network signal is viewed, the selection is switched to the terminal B1 and the terminal B2.
[0018]
(B) Recording operation In the above-described HDD recording / reproducing apparatus according to the embodiment of the present invention, for example, a high-quality mode capable of recording a signal having a transfer rate of 8 Mbps for two hours for a packet to be transmitted and a signal having a transfer rate of 4 Mbps. Can be recorded at different transfer rates such as an intermediate image quality mode capable of recording for 4 hours and a normal image quality mode capable of recording a signal with a transfer rate of 2 Mbps for 8 hours.
[0019]
For this reason, the system controller 5 indicates the recordable area and non-recordable area on the disk 1 corresponding to each recording mode (each transfer rate) prior to the recording control in order to indicate the selection material of the recording mode to the user. The recording time and / or capacity in each recording mode is displayed. Based on this display, data is recorded in the recordable area corresponding to the recording mode selected by the user.
[0020]
Specifically, when displaying the recording time and / or capacity in each recording mode, the system controller 5 starts and ends the data area (recorded area) recorded in the management area of the disc 1. The address is read and controlled to the track buffer 9, the start address and end address of the free area are specified from the interval between the start address and the end address of this data area (= the capacity of the free area), and the capacity of each free area is calculated. Remember with position. This is repeated and the capacities of all free areas are calculated and stored together with the position information.
[0021]
Next, in the case of three types of transfer rates of 2, 4, 8 Mbps to be recorded, it is calculated whether the capacity of each independent free area can be continuously recorded or continuously reproduced at each transfer rate. To do.
[0022]
Regarding the seek time, since the disk is CLV controlled, the address difference between addresses is calculated, and the number of track movements based on the address difference is obtained by referring to the seek table stored in the ROM of the system controller 5. The seek time is calculated by performing a predetermined coefficient operation on this. Alternatively, the seek time may be calculated as a predetermined constant value by the device.
[0023]
Next, the type of signal to be recorded is selected in this way, the recording mode (transfer rate) is set, and when the recording start is instructed, the system controller 5 sets the recording mode (transfer) set by the user. Rate) is set to AV ENDEC10. Further, the control is performed on the disk 1 via the magnetic head 2 and the address signal detected by the address reproducing circuit in the magnetic head 2 is fetched. Based on the address signal, the system controller 5 controls the movement of the magnetic head 2 to a sector to be recorded via the servo processor 7 and the driver 3, and controls the magnetic head 2 in a standby state at this address.
[0024]
The AV ENDEC 10 performs MPEG compression processing of video signals (and audio signals) to be recorded in units of GOP while writing / reading control to the buffer memory 11, and the track buffer 9 according to the transfer rate set by the system controller 5. The values of “FULL” and “EMPTY” are set respectively. The values “FULL” and “EMPTY” are values respectively indicating the upper limit value and the lower limit value of data written to the track buffer 9.
[0025]
The signal processing circuit 6 controls writing of the data compressed by the AV ENDEC 10 into the track buffer 9 for each predetermined recording unit, and the timing when the data amount of the data written in the track buffer 9 becomes the value of “FULL”. Then, reading of the data written in the track buffer 9 is started, and a sector address, a sync signal, and an error correction code are added to obtain ECC block unit data. Then, this data is transferred to the magnetic head 2 at a transfer rate of “25 Mbps”, for example.
[0026]
The magnetic head 2 is controlled to a standby state (waiting for kick) on the track to be recorded until the data read from the track buffer 9 is supplied. The standby state is released, and data is recorded on the target recording track.
[0027]
Next, in the track buffer 9, data is written from the AV ENDEC 10 while data is being read. The transfer rate of the written data is, for example, 8 Mbps, but the data is read. The data transfer rate is 25 Mbps. For this reason, since the reading speed is faster than the writing speed to the track buffer 9, the amount of data stored in the track buffer 9 gradually decreases even when the writing is performed, and the “EMPTY” Value.
[0028]
When the amount of data written to the track buffer 9 reaches the value “EMPTY”, the system controller 5 controls to stop reading data from the track buffer 9 and the magnetic head 2 should also record next. Control to the standby state (waiting for kick) on the track. Then, the data writing is performed in a state where the reading is not performed, so that the data reading is resumed at the timing when the data amount of the track buffer 9 becomes the value “EMPTY”. The system controller 5 controls the recording of data while performing such writing and reading control on the track buffer 9, so that the continuity of the input data is recorded while intermittently recording on the disk 1. Recording is performed after ensuring.
[0029]
(C) Reproduction Operation When the reproduction mode is entered, the system controller 5 is recorded intermittently based on the start address and end address of the data area (recorded area) recorded in the management area on the disc 1. The recording position of the data is searched, and the magnetic head 2 is controlled to move and reproduce so that the data is reproduced in order.
[0030]
Further, the system controller 5 detects the compression rate recorded in the control data of the video signal among the reproduction signals, and the data is recorded. The values “FULL” and “EMPTY” are set for the track buffer 9 respectively.
[0031]
Data reproduced from the disk 1 is transferred and written to the track buffer 9 at the transfer rate of 25 Mbps. The system controller 5 monitors the remaining capacity of the storage capacity of the track buffer 9, and the data written in the track buffer 9 at the timing when the remaining capacity becomes “EMPTY” is transferred at the transfer rate at the time of recording the data. Read control is performed and this is supplied to the AV ENDEC 10.
[0032]
Further, at the timing when the remaining amount becomes “FULL”, the magnetic head 2 is controlled to be in a standby state (a state of waiting for kick), and only data read control from the track buffer 9 is performed. Then, by only reading data from the track buffer 9, the optical head 2 is controlled to be reproduced so that the reproduction of data is resumed at the timing when the remaining amount becomes “EMPTY”. As a result, the data reproduced from the track buffer 9 can be reproduced continuously while intermittently reproducing the data from the disk 1, and the reproduction can be performed while ensuring the continuity of the data.
[0033]
The AV ENDEC 10 separates and forms video data and audio data by subjecting the data read from the track buffer 9 to MPEG buffer processing while writing / reading control to the buffer memory 11, and these are formed in a D (not shown). Output via / A converter. As a result, continuous video and audio recorded on the disc 1 can be viewed via, for example, the television receiver 16.
[0034]
Here, the processing of the embodiment of the present invention will be described with reference to the flowchart shown in FIG. If necessary, video information A, control information of video information A, and additional information of video information A are input as information input from the outside (step 100).
[0035]
Then, it is determined whether or not it is in a reproduction instruction state (step 110). When in the reproduction instruction state (Y in step 100), only the video information A is extracted and reproduced from the AV ENDEC 10 according to the packet information. The control information of the video information A is read, decoded, and reproduced once in accordance with the copy management information that is the control information of the video information A in the temporary storage means (here, HDD), the title and the content individual number, and the playback The date is recorded and used as a history for future management (step 120).
[0036]
Next, when it is not a reproduction instruction (in the case of N in step 110), for example, when removing a seat due to a telephone call or the like during the reproduction, it is determined whether or not the input information A is in a temporary storage instruction state. (Step 130) When the information is temporarily stored in the HDD, the history of the recording / playback control information of the video information A is searched from the recording / playback apparatus HDD, and it is determined from the search result whether the video can be temporarily stored. As the control information of A, the history information indicating whether or not the reproduction has been performed at the time of recording is investigated, and if the reproduction is performed within the past predetermined period date, the reproduction cannot be performed, or the reproduction cannot be performed when the reproduction is performed a predetermined number of times. Etc. are determined (step 140).
[0037]
If temporary storage is possible (Y in step 140), the video information A, the control information of the video information A, and the additional information of the video information A are recorded in predetermined areas of the temporary storage means (here, HDD). At this time, when the period when this information is reproduced is limited by the copy management information, the time information by the date clock means that this apparatus has as a function is simultaneously recorded, and the time of the information A Management is started (step 150).
[0038]
Next, the additional information of the recorded video information A is read out (the information recorded in the HDD or the information of TB9 may be read out). This is interpreted, and the title of the content A information and the like is added as additional information via the AV ENDEC 10. Titles, thumbnails, and the like are displayed on the display 16 as shown in FIG. 3 (like icons) to indicate that information to be reproduced exists in the HDD. When this temporary storage content increases, a plurality of thumbnails cannot be displayed on the screen, so the size may be reduced as shown in a list and button display as shown in FIG. 3 (step 160). The lower left diagram in FIG. 3 shows a thumbnail indicating a still image of a typical screen of one content, title information, input channel, recorded date and time, content providing manufacturer information (commercial) (this information By displaying the content, the content transmission side can obtain profits through commercials, so that the billing amount for the content can be reduced). This thumbnail is linked to the video information that is the main information, and by selecting this information, the video information that is the main information can be reproduced. Since this thumbnail information increases as the recording operation continues, when it exceeds the predetermined screen so as not to deviate from the display screen, as shown in the lower right of FIG. Change to a list of days, etc. As a result, a large amount of information during reproduction can be managed.
[0039]
Next, when the content A recorded on the HDD is played back by the input means such as play or pause release such as a mouse or a remote controller at the KEY4 or icon input position, the user selects the content to be played back with the icon or the like. (Step 170), it is determined whether or not it is in a reproduction instruction state (Step 180), the time when the A information is recorded is compared with the current time, the time limit is exceeded, or the number of reproduction times is limited with respect to the recorded number of reproductions (Step 190), and if it is not exceeded, that is, if reproduction is permitted (N in step 190), only the video information A on the HDD is read, and display reproduction is performed on the monitor 16 via the AV ENDEC 10. After the reproduction, the control information of the video information A on the HDD is updated to record when it is reproduced once (step 200).
[0040]
In addition, when reproduction is performed only once or a predetermined number of times are reproduced and reproduction is prohibited (in the case of Y in Step 190), the control information of the video information A on the HDD is changed to prohibited, and the video information on the HDD is changed. In addition to deleting A, the title and thumbnail of the displayed additional information are deleted from the monitor.
[0041]
In this case, there is a problem that if the playback is not performed even after the period to be played back, the information cannot be viewed despite being paid information. In this case, the title of the displayed additional information In addition to displaying thumbnails and the like from the monitor without expiration, the information indicating that the expiration date has expired is displayed to the user, and a necessary information source signal is displayed to view the information A again. By making it possible to obtain the information A again via a communication line such as the above, it is possible to maintain the viewing rights of a busy user (step 210).
[0042]
The present invention is not limited to the above-described embodiment described as an example, and according to the design, etc., as long as the technical idea according to the present invention is not deviated from other embodiments. Of course, various modifications are possible.
[0043]
【The invention's effect】
As described above, according to the present invention, even a content that cannot be recorded by copyright can be viewed when the user wants to view it, and the copyright can be maintained by control information. . In addition, since the temporarily stored information is displayed as additional information, it is easy for the user to understand, and it is possible to prevent forgetting the temporarily stored content, and even if the information has expired, Since the source signal is held, it is possible to easily view the content by accessing the information source when the user wants to view it again, for example, by newly charging.
[Brief description of the drawings]
FIG. 1 is a block diagram of a recording / reproducing apparatus according to an embodiment of the present invention.
FIG. 2 is a flowchart for explaining the operation of the recording / reproducing apparatus shown in FIG. 1;
FIG. 3 is a diagram for explaining a screen display state;
FIG. 4 is a diagram for explaining a packet configuration;
[Explanation of symbols]
1 ... disc,
2 ... Magnetic head,
3 ... Driver,
4 ... operation part,
5 ... System controller,
6 ... Signal processing unit,
7 ... Servo processor,
8 ... Preamp,
9 ... Track buffer,
10: Encoder / decoder (AV ENDEC),
11: Buffer memory,
20 ... Recording / reproducing apparatus,
21 ... Compression / decompression processing device,

Claims (2)

Compressed compressed video information including copyrighted video information, control information for controlling recording and reproduction of the video information, and title information or still image information of the video information as additional information related to the video information is input. Video information input means;
Playback means for playing back the compressed video information as video information on the monitor via the decompression means;
In the normal playback state, when the video information is played back by the playback means and the playback is temporarily interrupted, the control information is confirmed, and when the recording is possible, the video information after the playback is interrupted. The control information and the additional information are recorded on a recording medium, and when the reproduction is resumed, it is determined whether the reproduction is possible from the recorded date time or the number of times of reproduction. Reproduction control means for permitting reproduction means to reproduce the video information;
When reproducing the video information, it is determined whether the video information can be reproduced from the recorded date time or the number of times of reproduction, and the reproduction control is performed when reproduction of the video information is prohibited because the reproduction is performed only once or a predetermined number of times. If the means determines , the control information and the additional information are left alone, the control information is changed to playback prohibition, the video information is erased from the recording medium, or the video information cannot be played back. Prohibited means,
Until the video information is reproduced based on the control information, the title information or still image information as the additional information is displayed on the monitor, and the video information is reproduced only once or a predetermined number of times. When the playback control means determines that video information playback is prohibited, the displayed title information or still image information as the additional information is deleted from the monitor, while the period or number of times to be played has passed. If the playback is not performed, the additional information is displayed to the user that the expiration date is not deleted from the monitor without deleting the title information or still image information of the video information as the additional information displayed on the monitor. Information display means;
A recording / reproducing apparatus comprising: Compressed compressed video information including copyrighted video information, control information for controlling recording and reproduction of the video information, and title information or still image information of the video information as additional information related to the video information is input. A video information input step;
A playback step of playing back the compressed video information as video information on a monitor via decompression means;
Causing the reproduction means to reproduce the video information in a normal reproduction state;
When it is temporarily instructed to interrupt reproduction, the control information is confirmed, and when recording is possible, the video information, the control information, and the additional information after the reproduction is interrupted are recorded on the recording medium. Is recorded, and when the reproduction is resumed, it is judged whether the reproduction is possible from the recorded date time or the number of times of reproduction, and when the reproduction is judged to be possible, the reproduction means permits reproduction of the video information. Control steps;
When reproducing the video information, it is determined whether the video information can be reproduced from the recorded date time or the number of times of reproduction, and it is determined that the reproduction of the video information is prohibited because the reproduction is performed only once or a predetermined number of times. If the reproduction inhibition step of leaving only the control information and the additional information, and change the control information to the reproduction inhibition, erases the image information from the recording medium, or to not be reproduced the video information,
Until the video information is reproduced based on the control information, the title information or still image information as the additional information is displayed on the monitor, and the video information is reproduced only once or a predetermined number of times. If it is determined that the reproduction of video information is prohibited, the displayed title information or still image information as the additional information is deleted from the monitor, and the reproduction is performed even after the period or the number of times to be reproduced has passed. If not, the additional information display step for displaying to the user that the expiration date has been reached without deleting the title information or still image information of the video information as the additional information displayed on the monitor from the monitor; and ,
A recording / reproducing method comprising:

Images