JP2002033986A - Method and device for recording, reproducing image and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make the recording capacity of a recording medium effectively utilizable, without significantly increasing the capacity of the medium which is consumed for recording, even when the video recording of a program broadcast a plurality number of times is reserved, and at the same time, to significantly reduce the load of erasing operation imposed upon a user. SOLUTION: A system controller 80 discriminates whether the recorded past broadcast contents of the program are in an erasable state, when the video recording reservation setting information stored in a RAM 84 is updating video recording setting and when the contents are in the erasable state, it erases the recorded contents from hard disks 61-63 and records the latest broadcast contents of the program on the disks 61-63.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image recording / reproducing apparatus and an image recording / reproducing method, and more particularly to reservation recording.

[0002]

2. Description of the Related Art Large-capacity and low-priced recording media such as hard disks, high-speed recording / reproducing access speeds to recording media, high-speed recording / reproducing transmission speeds, and compression of image signals and audio signals including moving images. With the progress of high-speed encoding processing, an image recording apparatus capable of compressing and recording an image signal and an audio signal of a television program and recording, decoding, and reproducing the image signal using these techniques has been developed. It is being developed.

According to such an image recording apparatus, it is possible to record image signals and audio signals of a plurality of television programs on a large-capacity recording medium represented by a hard disk. It is desirable to have a function of setting a program to be recorded and a recording control function of recording the set program on a recording medium so that recording can be performed.

For example, in an image recording apparatus having a function of reserving and recording a program, when a user reserves recording of a program broadcasted a plurality of times, such as a serial drama, the user can record each program with one recording reservation. You can make a recording reservation.

[0005]

However, in this case, if a program broadcasted a plurality of times is recorded, the recording capacity required to record all the broadcasts becomes enormous. Further, for this reason, if the user tries to delete broadcast times that do not need to be saved, such as broadcast times that have already been viewed, from among the recorded broadcast times by performing a delete operation each time, the burden on the user becomes large. Become.

Therefore, the present invention makes it possible to effectively utilize the recording capacity of a recording medium without significantly increasing the capacity consumed for recording, even when recording of a program broadcasted a plurality of times is reserved. In addition to this, it is possible to significantly reduce the burden on the user for the erasing operation.

[0007]

An image recording / reproducing apparatus according to the present invention comprises: setting information storage means for storing program recording reservation setting information; image signal recording means for recording an image signal; and recording on the image signal recording means. Management information storage means for storing information for managing the image signal being set, and program recording reservation setting information stored in the setting information storage means, wherein the program recording reservation setting indicates that scheduled recording is performed periodically. In some cases, prior to recording of the program, recording control means for controlling scheduled recording so as to delete past recordings of the program is provided.

The control means, when the program recording reservation setting information stored in the setting information storage means is a program recording reservation setting indicating that scheduled recording is performed periodically, prior to recording the program, Scheduled recording may be controlled to erase past recordings of the program for which deletion prohibition is not set.

[0009] When the program recording reservation setting information stored in the setting information storage means is a program recording reservation setting indicating that scheduled recording is to be performed periodically, the control means controls the scheduled recording of the program. Scheduled recording may be controlled so that past recordings of the program are deleted except for past recordings of the program being reproduced at the time.

According to the image recording / reproducing method of the present invention, when the program recording reservation setting information is a program recording reservation setting indicating that scheduled recording is to be performed periodically, prior to the recording of the program, the past recording of the program is performed. The method further comprises the step of controlling the scheduled recording so as to delete the recording.

Further, according to the image recording / reproducing method of the present invention, when the program recording reservation setting information is a program recording reservation setting indicating that scheduled recording is performed periodically, erasure prohibition is prohibited before recording the program. The method is characterized in that it includes a step of controlling reserved recording so that past recordings of the program not set are deleted.

Further, the image recording / reproducing method according to the present invention comprises:
When the program recording reservation setting information is a program recording reservation setting indicating that scheduled recording is to be performed periodically, except for the past recording of the program being reproduced at the time of the scheduled recording of the program, the recording of the program is not performed. The method further comprises the step of controlling the scheduled recording so that the past recording is deleted.

[0013] The program recorded on the recording medium of the present invention, when the program recording reservation setting information is a program recording reservation setting indicating that scheduled recording is to be performed periodically, prior to the recording of the program, The method further comprises the step of controlling the scheduled recording so that the past recording of the program is deleted.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS [System Configuration of Recording / Reproducing Apparatus]
FIGS. 1 and 2 show an example of a recording / reproducing apparatus according to the present invention, in which a video signal and an audio signal are converted to an MPEG (Movin) signal.
g Compression-encode and multiplex according to the Picture Experts Group (GP) method, and transport stream (TS: Transpo) of the MPEG system.
In this case, the data is recorded on a hard disk in a hard disk drive (HDD: Hard Disk Drive) as an rt stream, and reproduced from the hard disk.

Hereinafter, the analog video signal and the analog audio signal are referred to as a video signal and an audio signal, respectively.
The digital video signal and digital audio signal are referred to as digital video data and digital audio data, or simply video data and audio data.

In this example, the recording / reproducing apparatus 10 is connected to the antenna 1 for receiving an analog television broadcast,
Analog input terminals 11V, 11A, 11S, analog output terminals 12V, 12A, 12S, digital input / output terminal 1
5, digital interface 17, input processing unit 20, output processing unit 30, multiplexer / demultiplexer 4
0, buffer controller 50, hard disk drive 60, synchronization control circuit 70, system controller 8
0, an input / output interface 90, an operation input unit 110, and a driver 120.

In this example, the hard disk drive 60 includes three hard disks 61, 62, and 63, and a transport stream is recorded on one of the three hard disks, and a transport stream is reproduced from one of the hard disks. .

The system controller 80 has a CPU (C
central processing Unit) 81
The host bus 82 has a ROM (Read On)
lyMemory) 83 and RAM (Random)
Access Memory) 84 and the like.

A program to be executed by the CPU 81 is stored in the ROM 83 in advance, and the CPU 81 reads out the program and controls each unit of the recording / reproducing apparatus 10. In the RAM 84, other programs and data necessary for the CPU 81 to control each unit of the recording / reproducing apparatus 10 are appropriately written.

The operation input unit 110 includes a keyboard, a mouse, buttons, switches, a remote commander, and the like, and is connected to the host bus 82 via an input / output interface 90.

The driver 120 is also connected to the host bus 82 via the input / output interface 90. Driver 1
Reference numeral 20 denotes a configuration in which a magnetic disk 131, an optical disk 132, a magneto-optical disk 133, a semiconductor memory 134, and the like are mounted, and a program recorded in these is installed in the RAM 84 as described later.

(Analog Input Processing and Recording) A signal of an analog television broadcast received by the antenna 1 is selected by the tuner 21 in accordance with an instruction of the system controller 80 based on an operation on the operation input unit 110, and is selected by the tuner 21. , A composite video signal and an audio signal of the selected channel are obtained, and the composite video signal and the audio signal are supplied to one input terminal of the input switching circuit 22.

The input terminal 11V is supplied with a composite video signal from an external device, the input terminal 11A is supplied with an audio signal from the external device, and the input terminal 11S is supplied with a separate video signal from the external device.

The composite video signal from the input terminal 11V and the audio signal from the input terminal 11A are supplied to the other input terminal of the input switching circuit 22,
Is switched by the system controller 80,
From the input switching circuit 22, one of the composite video signals and audio signals is selected and taken out.

The composite video signal from the input switching circuit 22 is separated into a luminance signal and a color difference signal by a YC separation circuit 23 and supplied to one input terminal of another input switching circuit 24. Further, a separate video signal (luminance signal and color difference signal) from the input terminal 11S is supplied to the other input terminal of the input switching circuit 24, and the input switching circuit 24 is switched by the system controller 80. , One of the luminance signal and the color difference signal is selected and taken out.

The luminance signal and the color difference signal from the input switching circuit 24 are transmitted to an NTSC (National Televi).
The A / D (Analog to Di) is provided by a section system committee (decoder) 25.
digital), and further subjected to chroma encoding processing to obtain component video data from the NTSC decoder 25.

In the NTSC decoder 25, a vertical synchronizing signal and a horizontal synchronizing signal are separated from the luminance signal from the input switching circuit 24, and a clock and a field discrimination signal are generated based on the separated synchronizing signal. The synchronization signal, the clock, and the field determination signal are supplied to the synchronization control circuit 70. In the synchronization control circuit 70, the recording / reproducing device 10
A clock and a timing signal required for each section are generated and supplied to each section of the recording / reproducing apparatus 10.

The video data from the NTSC decoder 25 is subjected to processing such as pre-filtering by a pre-video processing circuit 26 and then to an MPEG video encoder 27.
The output is supplied to the post video processing circuit 32 of the output processing unit 30.

In the MPEG video encoder 27, the video data from the pre-video processing circuit 26
T (Discrete Cosine Transfo
rm) or the like, and is subjected to a video elementary stream (ES: Elementary Stream).
m) is generated, and the video elementary stream is supplied to the multiplexer / demultiplexer 40.

On the other hand, the audio signal from the input switching circuit 22 is converted into digital audio data by the A / D converter 28, and then supplied to the MPEG audio encoder 29 and the output switching circuit 35 of the output processing unit 30.

In the MPEG audio encoder 29, A / D
The audio data from the converter 28 is compression-encoded by the MPEG method to generate an audio elementary stream, and the audio elementary stream is supplied to the multiplexer / demultiplexer 40.

In the multiplexer / demultiplexer 40, in the multiplexer, the video elementary stream from the MPEG video encoder 27 and the MP
The audio elementary stream from the EG audio encoder 29 and various control signals are multiplexed to generate an MPEG system transport stream, and the transport stream is sent to the buffer controller 50.

The buffer controller 50 converts the transport stream continuously input from the multiplexer / demultiplexer 40 into the hard disk drive 6
Transmitted intermittently to zero. That is, since writing cannot be performed when the hard disk drive 60 is performing a seek operation, the input transport stream is temporarily stored in a buffer, and when the hard disk drive 60 is writable, the transport stream is higher than the input rate. The data is read from the buffer at a rate and sent to the hard disk drive 60. Thereby, the transport stream continuously input to the buffer controller 50 is recorded on the hard disks 61 to 63 without interruption.

The hard disk drive 60 is controlled by the system controller 80 to write a transport stream to the hard disks 61 to 63. Buffer controller 50 and hard disk drive 60
The protocol (interface) between the
E (Integrated Drive Electr)
onics) is used.

(Reproduction and Analog Output Processing) During reproduction, the hard disk drive 60 is controlled by the system
3 to read the transport stream and send it to the buffer controller 50. Buffer controller 5
In the case of 0, the transport stream intermittently input from the hard disk drive 60 is converted into a continuous transport stream and supplied to the multiplexer / demultiplexer 40, contrary to the recording.

In the multiplexer / demultiplexer 40, the header of the continuous transport stream is analyzed by the demultiplexer, so that the PES (Pac (Pac
Ketized Elementary Stream
m) is separated and supplied to the MPEG video / audio decoder 31.

In the MPEG video / audio decoder 31, the PES from the multiplexer / demultiplexer 40 is separated into a video elementary stream and an audio elementary stream, and the video elementary stream is decoded by the MPEG video decoder to obtain a baseband signal. Is converted to video data and the audio elementary stream is M
It is decoded by a PEG audio decoder and converted into baseband audio data. The converted video data is supplied to a post video processing circuit 32, and the audio data is output to an output switching circuit 35.
Supplied to

In the post video processing circuit 32, the video data from the MPEG video / audio decoder 31 and the pre-video processing circuit 26
Are switched or combined, and post-filtering processing and the like are performed on the video data.

In the post video processing circuit 32, the GU
I (Graphical UserInterfac)
e), a process of generating a representative screen, reducing a plurality of representative screens, and pasting the representative screen to a window is performed, and the processed video data is displayed on an OSD (OnScreen Display).
y) It is supplied to the processing circuit 33.

The OSD processing circuit 33 generates image data corresponding to text information and the like in accordance with an instruction from the system controller 80, and superimposes the image data from the post video processing circuit 32 on the above-described window portion video data. Processing is performed, and the processed video data is
It is supplied to the C encoder 34.

The NTSC encoder 34 converts video data (component video data) from the OSD processing circuit 33 into luminance data and color difference data,
Or D / A without conversion
(Digital to Analog)
A separate video signal and a composite video signal of an analog signal are generated respectively. The separate video signal is led to the output terminal 12S, and the composite video signal is led to the output terminal 12V.

On the other hand, in the output switching circuit 35, the MPEG video / audio decoder 3 is controlled by the system controller 80.
1 and the audio data from the A / D converter 28 are selected and taken out. The selected audio data is converted into an analog audio signal by the D / A converter 36, and is output to the output terminal 12A.

The separate video signal derived from the output terminal 12S, the composite video signal derived from the output terminal 12V, and the audio signal derived from the output terminal 12A are:
By being output to the monitor device 2 such as an external television receiver, the monitor device 2 displays an image and outputs sound.

(Recording and Reproduction of Video / Audio Data from External Apparatus) In this example, the recording / reproducing apparatus 10 has a digital interface 17 connected between the digital input / output terminal 15 and the multiplexer / demultiplexer 40, and By connecting the external device 5 to the output terminal 15, the transport stream input from the external device 5 is recorded on the hard disks 61 to 63, and the transport stream reproduced from the hard disks 61 to 63 is output to the external device 5. It is configured to be able to.

As the external device 5, an IRD (Integ
A device such as a rated receiver decoder or a personal computer can be connected. The digital interface 17 is IEEE
(Institute of Electrical a
nd Electronics Engineers)
An IEEE 1394 serial bus is used as the serial bus 6 that connects the external device 5 and the digital input / output terminal 15 using a 1394 digital interface.

The transport stream input from the external device 5 to the digital input / output terminal 15 via the serial bus 6 is interface-processed by the digital interface 17 and sent to the multiplexer / demultiplexer 40. The data is sent to the buffer controller 50 and recorded on the hard disks 61 to 63 by the hard disk drive 60.

At the same time, the PES is separated from the transport stream to be recorded by the demultiplexer of the
By being supplied to the video / audio decoder 31, analog video signals and analog audio signals can be obtained at the output terminals 12V, 12S and 12A.

At the time of reproduction, the hard disk drive 60
Transport streams are read from the hard disks 61 to 63, and the reproduced transport streams are sent to the buffer controller 50, sent from the buffer controller 50 to the multiplexer / demultiplexer 40, and It is processed and output to the digital input / output terminal 15, sent from the digital input / output terminal 15 to the external device 5 via the serial bus 6, and
The image is displayed on the monitor device 7 connected to
Sound is output.

At the same time, the PES is separated from the reproduced transport stream by the demultiplexer of the multiplexer / demultiplexer 40 and
By being supplied to the video / audio decoder 31, a reproduced analog video signal and a reproduced analog audio signal can be obtained at the output terminals 12V, 12S and 12A.

[Embodiment of Update Recording] In the recording / reproducing apparatus 10 as described above, an example of an update recording processing method in the recording / reproducing apparatus 10 when a user has reserved update recording will be described below.

Here, the update recording means that, with respect to the update recording target program whose recording reservation setting information is stored in the RAM 84, in principle, the past program is deleted and only the latest program is recorded and left. For example, when recording a serial drama or a news program that is broadcast daily or weekly, only the latest broadcast time is recorded on the hard disks 61 to 63.

FIG. 3 shows an example of an update recording processing routine performed by the system controller 80 in this case. As shown in FIG. 4, it is assumed that the operation and the setting of the update recording reservation have already been performed at the time point ta, and the recording reservation setting information of the update recording target program is stored in the RAM 84.

In this update recording processing routine, the system controller 80 firstly proceeds to step S1 in FIG.
Also, the current date and time information from the clock omitted in FIG. 2 is compared with the recording start date and time in the recording reservation setting information of the update recording target program stored in the RAM 84 to determine whether or not the recording start date and time has been reached. If it has reached, the process proceeds to step S2, where it is determined whether or not the program to be updated and recorded has been recorded in the past and stored in the hard disks 61 to 63.

If the video has not been recorded in the past, or if the video has been recorded but has been erased, the system controller 80 proceeds from step S2 to step S3.
Go to and record the target program.

If the program to be updated and recorded has been recorded in the past and has been stored in the hard disks 61 to 63, the process proceeds from step S2 to step S4, in which the recorded and stored program is protected from erasure prohibition. It is determined whether or not the program has been set. If the protection has not been set, the process further proceeds to step S5 to determine whether or not the recorded program is currently being played back. Then, the process proceeds from step S5 to step S6 to perform update recording.

If it is determined in step S5 that the recorded program is currently being reproduced, the system controller 80 proceeds from step S5 to step S7.
To update recording except for the program being reproduced.

If it is determined in step S4 that the program recorded and stored is set to protect from erasure, the system controller 80 proceeds from step S4 to step S8 to select a program for which protection is set. Update recording except for the program being played.

As described above, in the case of recording a program for which update recording is scheduled, it is possible to delete the already recorded program before recording. Further, even when a program for which update recording is reserved is recorded, if a program that has already been recorded is set to be protected from erasure, the program can be recorded without erasure. Further, even in the case of recording a program for which update recording is reserved, if the already recorded program is being reproduced, the program can be recorded without erasing.

In the above-described example, the update recording process is realized by software. When the update recording process is realized by software in this manner, the program constituting the software is provided by the recording / reproducing apparatus 10 using a dedicated hardware. When configuring hardware, a system controller 80 which is a computer incorporated therein is used.
The recording / reproducing device 10 installed from the recording medium
Is configured as a general-purpose personal computer capable of executing various functions by installing various programs, the personal computer is installed from a recording medium.

As shown in FIG. 2, this recording medium is provided separately from the recording / reproducing apparatus 10 (computer) and distributed to provide the user with the program. Trademark) 131, and an optical disc (CD-ROM (Co
mpact Disk-Read Only Memo
ry), DVD (Digital Versatile)
Disk) 132, magneto-optical disk (MD
(Including a Mini Disk) 133 or a package medium including a semiconductor memory 134 and the like.
The hard disk 61 to 61 included in the hard disk drive 60 or the ROM 83 storing the program, which is provided to the user in a state incorporated in the (computer).
63 and the like.

The steps described in the program recorded on the recording medium include processes executed in chronological order in the order described in the claims. , And processing executed in parallel or individually.

The update recording process can be realized not by software but by hardware.

[Other Embodiments] In the above-described embodiment, the video data and the audio data are compressed by the MPEG system. However, they may be compressed by another compression system, or the digital data may be simply compressed without compression. , Or may remain as digital data.

In the above embodiment, a hard disk is used as a recording medium of the recording / reproducing apparatus. However, an optical disk, a magneto-optical disk, a semiconductor memory, or the like may be used.

[0065]

As described above, according to the present invention, even when the recording of a program broadcasted a plurality of times is reserved, the recording capacity of the recording medium does not significantly increase without significantly increasing the recording capacity of the recording medium. Can be used effectively, and the burden of the user's erasing operation can be significantly reduced.

[Brief description of the drawings]

FIG. 1 is a diagram showing a part of an example of a recording / reproducing apparatus of the present invention.

FIG. 2 is a diagram showing a part of an example of the recording / reproducing apparatus of the present invention.

FIG. 3 is a diagram illustrating an example of an update recording processing routine performed by a system controller.

FIG. 4 is a diagram provided for explanation of update recording.

[Explanation of symbols]

Since the main parts are all described in the figure, they are omitted here.

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Shigeki Yamamoto 6-7-35 Kita-Shinagawa, Shinagawa-ku, Tokyo Inside Sony Corporation (72) Inventor Honda form 6-35, Kita-Shinagawa, Shinagawa-ku, Tokyo Inside Sony Corporation (72) Inventor Yukinori Kita 6-7-35 Kita-Shinagawa, Shinagawa-ku, Tokyo Inside Sony Corporation (72) Hiroyuki Yoshitsu 6-35, Kita-Shinagawa, Shinagawa-ku, Tokyo Sony Incorporated (72) Inventor Masami Miura 6-7-35 Kita-Shinagawa, Shinagawa-ku, Tokyo F-term in Sony Corporation (reference) 5C053 FA23 FA27 FA30 GA11 GB37 HA33 JA07 JA16 JA30 KA01 KA24 KA25 LA06 LA07 5D110 AA13 DA13 DA16 DA17 DB09 DC28 DD13

Claims (7)

[Claims] 1. A setting information storage means for storing program recording reservation setting information; an image signal recording means for recording an image signal; and a management means for storing information for managing an image signal recorded in the image signal recording means. Information storage means, when the program recording reservation setting information stored in the setting information storage means is a program recording reservation setting indicating that scheduled recording is performed periodically, prior to recording of the program,
An image recording / reproducing apparatus, comprising: recording control means for controlling scheduled recording so as to delete past recordings of the program. 2. The program control apparatus according to claim 1, wherein said program recording reservation setting information stored in said setting information storage means is a program recording reservation setting indicating that scheduled recording is performed periodically. 2. The image recording / reproducing apparatus according to claim 1, wherein reserved recording is controlled so that previous recording of the program for which deletion prohibition is not set is deleted. 3. The system according to claim 1, wherein the program recording reservation setting information stored in the setting information storage means is a program recording reservation setting indicating that scheduled recording is performed periodically. 2. The image recording / reproducing apparatus according to claim 1, wherein the reserved recording is controlled so that the past recording of the program is deleted except for the past recording of the program being reproduced at the time. 4. When the program recording reservation setting information is a program recording reservation setting indicating that scheduled recording is to be performed periodically, a reservation is made to delete the past recording of the program before recording the program. An image recording / reproducing method, comprising a step of controlling recording. 5. In the control step, when the program recording reservation setting information is a program recording reservation setting indicating that scheduled recording is performed periodically, erasure prohibition is not set prior to recording of the program. 5. The image recording / reproducing method according to claim 4, further comprising the step of controlling the scheduled recording so as to delete the past recording of the program. 6. The control step, when the program recording reservation setting information is a program recording reservation setting indicating that scheduled recording is to be performed periodically, the program recording of the program being reproduced at the time of the reservation recording of the program. 5. The image recording / reproducing method according to claim 4, further comprising the step of controlling reserved recording so as to delete past recordings of the program except for past recordings. 7. When the program recording reservation setting information is a program recording reservation setting indicating that scheduled recording is to be performed periodically, reservation is made so as to erase past recordings of the program prior to recording of the program. A recording medium on which a computer-readable program is recorded, comprising a step of controlling recording.