JP2001093264A - Recording/reproducing device and method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To edit contents reflecting a user's intention, to improve an accessing speed and to maximize a free disk capacity by re-arranging the information recorded on discrete areas on a plurality of disks having the relevance to continuous areas based on program information or the user's instruction/setting. SOLUTION: A video, an audio, the program information are coded and recorded on the disk, and the retrieval is executed for the previously recorded program information based on a key word, etc., and in the case of being matched with a retrieval condition, the area on the disk of the contents matched with the retrieval condition is retrieved, and the propriety of the optimization of the contents is judged. When it is judged that optimization is possible, the re-arrangement destination is decided based on the optimizing condition, and the contents are re-arranged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording / reproducing apparatus which encodes / decodes a video signal and an audio signal on a storage medium such as an optical disk and a hard disk and records / reproduces the signal.

[0002]

2. Description of the Related Art In recent years, various standards relating to DVDs (digital versatile discs) have been announced, and devices conforming to the standards have been gradually released. DVD-Video for ROM-type video players, large-capacity ROM drives as computer peripherals, RAM
DVD-ROM, DVD-RA for drives
Video Recorder for consumer video recorders following the DVD-Audio standards that implement M, high sound quality, multi-channel compatible audio equipment
g is currently under standardization work, and in parallel with the standardization work, development of devices and LSIs conforming to the standard is also progressing at a rapid pace in each manufacturer.

[0003]

As one form of a consumer video recorder using a DVD-RAM or a hard disk as a storage medium, a plurality of DVD-RAM disks are arbitrarily accessed in order to secure recording time and recording image quality. Possible changer systems, or combining multiple hard disk drives are conceivable.

When information is recorded on a plurality of large-capacity storage media such as the above system, as a result of recording the data in a time series, information to be arranged in a continuous area in terms of content is discrete on a disk. Often, it is recorded in a temporary area. In this case, management becomes complicated because the access speed at the time of recording and reproduction becomes slow, wasteful free space is generated, or data related in content is recorded on a plurality of disks. There's a problem.

[0005] The present invention solves the above-mentioned problems, and converts program information or information recorded in a discrete area on a related disc into a continuous area based on a user's instruction and setting. By rearranging the contents, it is possible to edit the content reflecting the user's intention, to improve the access speed, and to maximize the free disk space.

[0006]

According to the present invention, there is provided a changer-type disk drive for recording and reproducing encoded data on n (n is a natural number) arbitrary disks, and a method for encoding a video signal. Signal encoding / decoding means for encoding and decoding, audio signal encoding / decoding means for encoding and decoding audio signals, program information receiving means for receiving program information, encoding / decoding program information A recording / reproducing apparatus having program information encoding / decoding means for optimizing the recording area of the encoded data and rearranging and optimizing the encoded data area for arranging and rearranging the encoded data, A configuration for executing a conditional search based on the extracted data to extract relevance between respective data, and rearranging coded data recorded in a discrete area on the disc in a continuous area on the disc according to the relevancy I It is intended. According to the present invention, the above configuration realizes editing of content reflecting user's intention, improvement of access speed, and maximization of free disk space,
It is possible to automatically edit an original disc for each content intended by the user based on the program information without actually confirming the content of the content.

[0007]

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

(Embodiment 1) FIG. 1 is a block diagram showing a configuration of a recording / reproducing apparatus according to a first embodiment of the present invention.

First, the operation at the time of recording will be described. In FIG. 1, a video input 101, an audio input 102
A / D converter 105, directly after the demodulation by the receiving means 104 from the broadcast or communication I / F 103,
A / D converted audio data input to 106,
The video data is subjected to highly efficient encoding by a video encoding / decoding unit 107 and an audio encoding / decoding unit 108. Also, the program information encoding / decoding means 112 is transmitted from the user input 109 via the input I / F 110 or from the broadcast / communication I / F 103 to the receiving means 104 via the channel decoding means 111 after being inputted to the receiving means 104. type in,
Obtain program information data. The above-mentioned audio data, video data and program information data are multiplexed / separated by
After being multiplexed and buffered in the memory 114, the data is recorded on the disk by the disk changer means 115.

Next, the reproduction operation will be described. Data on the disk read from the disk changer means 115 is buffered in the memory 114 and then multiplexed /
Separation means 113 separates each elementary stream. The separated streams are respectively encoded by video encoding / decoding means 107, audio encoding / decoding means 108,
The program information is decoded by the program information coding / decoding means 112.
The decoded video data and audio data are D / A converted by D / A converters 116 and 117, respectively, and output from a video output 118 and an audio output 119. The decrypted program data is managed by the system controller 120, and a database for program information search or OSD (On Screen D) is provided in response to a request.
display) It is used as a database of display information. At this time, the operation of each block and the entire system is controlled by the system controller 120.

Next, the operation at the time of relocating the recording data will be described with reference to FIGS. FIG. 2 is a configuration diagram of each block of the system controller 120 and the overall control system. In FIG. 2, it is shown that the control means belonging to the upper hierarchy operates in link with the control means belonging to the lower hierarchy. First, a receiving means control 201 for directly controlling each operation block in FIG. 1, a channel decoding means control 202, a program information encoding / decoding means control 203, a disc changer system control 204, a memory control 205, a video encoding / decoding. Encoding means 206, audio encoding / decoding means control 207, input / output control 2
08, a channel selection control 209 for controlling each block required in a layer above it to realize a desired operation, a program information search means 210, a disk area rearrangement means 211, a system operation management 212, a recording / playback control. 213 operates. The operation of the entire control system is monitored by the operating system 214.

The disc changer means 1 is inputted from the broadcast / communication I / F 103 or the user input 109 and encoded by the program information encoding / decoding means 112.
15 is stored in the program information search means 2
The program information is stored on a disk as a program information database that can be searched through the server 10.

The program information search means 210 receives the user input 10
A search is performed on the program information database on the disc in accordance with the keyword input from No. 9 or search conditions such as recording date and time, day of the week, channel, program title, cast, and the like. As a result of the search, the disk area rearrangement optimizing unit 211 rearranges the encoded data for the content that matches the condition. The contents recorded in the discrete areas on the disc that match the above conditions are re-allocated to the disc area according to the chronological order set by the user and the optimization conditions such as the continuity of the single content within a single disc. The data is rearranged in a continuous area on the disk by the layout optimizing unit 211. Based on the control of the disk area relocation optimizing means 211, the disk changer means 11
5, the data to be relocated is once read and buffered in the memory 114, and read out from the memory 114 so that the order conforms to the above-mentioned optimization conditions. Do.

Next, a recording / reproducing method according to the embodiment will be described with reference to a flowchart. FIG. 3 is a flowchart showing processing of the recording / reproducing method in the embodiment.

The processing is started (301). First, video, audio and program information are encoded and recorded on the disk (30).
2). A search is executed for program information recorded in advance based on keywords or the like (303). If the search conditions do not match, the process ends (308) without relocating the content (307). If the search condition is matched, a search is made for an area on the disc of the content that matches the search condition (304). Then, it is determined whether or not the content can be optimized, and the relocation destination is determined based on the optimization condition (305). If optimization is not possible, the process is terminated (308) without relocating the content (307). If we determine that optimization is possible,
The content is rearranged (306), and the process ends (309).

In the embodiment of the present invention, the rearrangement process is performed on the data buffered in the memory. However, a data storage device such as a hard disk drive is separately provided for the buffer. It is good also as composition which arranges. Further, the continuous area on the disk in the embodiment of the present invention includes not only the continuous area of a single disk but also the end of the nth disk and the head of the (n + 1) th disk in the changer. Including. Further, as a condition for the optimization, when the single content is continuously rearranged from the end of the nth disc to the head of the (n + 1) th disc in order to maximize the recording area, the continuity of the content With priority given, the content to be placed nth after the rearrangement is recorded in the rearmost area on the m-th disc, and the free space on the m-th disc is the content to be placed in the (n + 1) th disc N + 1 if the capacity is smaller than
A configuration in which a plurality of conditions are set, such as recording at the beginning of the second disk, may be adopted.

[0017]

As described above, the present invention provides a changer-type disk drive means for recording and reproducing encoded data on n (n is a natural number) arbitrary disks, and a video signal for encoding and decoding a video signal. Encoding / decoding means, audio signal encoding / decoding means for encoding and decoding audio signals, program information receiving means for receiving program information, program information encoding / decoding for encoding / decoding program information Performing a conditional search based on the program information obtained by decoding in a recording / reproducing apparatus having encoding means and encoding data area rearrangement optimizing means for optimizing and rearranging the recording area of encoded data. Then, the relevance between the data is extracted by using the method, and the encoded data recorded in the discrete area on the disk is rearranged in the continuous area on the disk according to the relevance.

[0018] Thereby, it is possible to edit the contents reflecting the user's intention, improve the access speed, and maximize the free disk space. It becomes possible to automatically edit the original disc.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a recording / reproducing apparatus according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram of each block of a system controller and an entire control system according to the embodiment;

FIG. 3 is a flowchart showing a processing method of the recording and reproducing apparatus according to the embodiment;

[Explanation of symbols]

 Reference Signs List 101 video input 102 audio input 103 broadcast / communication I / F 104 receiving means 105, 106 A / D converter 107 video encoding / decoding device 108 audio encoding / decoding device 109 user input 110 input I / F 111 Channel decoding means 112 program information encoding / decoding means 113 multiplexing / demultiplexing means 114 memory 115 disc changer means 118 video output 119 audio output 120 system controller 201 receiving means control 202 channel decoding means control 203 program information encoding / Decoding means control 204 Disc changer system control 205 Memory control 206 Video coding / decoding means control 207 Audio coding / decoding means control 208 Input / output control 209 Tuning control 210 Program information Search means 211 disk space rearrangement means 212 system operation management 213 recording and playback control

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 5/765 G11B 27/00 A 5D110 5/781 27/02 K 5/85 27/10 A 5/91 H04N 5/781 520Z 5/92 5/91 N 5/93 5/92 H 5/93 EF term (reference) 5C052 AA02 AB03 AB04 AC08 CC06 DD04 DD06 5C053 FA14 FA25 GA20 GB06 GB11 HA30 HA33 JA01 JA24 KA04 KA24 LA06 5D044 BC01 CC04 DE37 DE52 DE96 GK07 GK12 HL14 5D066 BA03 BA05 BA06 5D077 AA22 AA30 AA38 BB14 BB18 CA10 CB03 DC01 DC12 DC22 EA33 EA34 HC16 5D110 AA13 AA17 AA22 AA27 AA29 BB23 BB24 CF06 DA06 CF06 DA06 DE03 DE04 DE06 EA07 EA08 EA12

Claims (5)

[Claims] 1. A changer type disk drive means for recording and reproducing encoded data on n (n is a natural number) arbitrary disks, and a video signal encoding / decoding means for encoding and decoding a video signal. Signal encoding / decoding means for encoding and decoding audio signals, program information receiving means for receiving program information, and program information encoding / decoding means for encoding and decoding the program information. Disk area rearranging means for rearranging a recording area of the encoded data on the disk, wherein the encoded data recorded in a discrete area on the disk having relevance to the program information. Recording / reproducing apparatus for rearranging in a continuous area on the disk. 2. The changer type disk drive means comprises n
2. The recording / reproducing apparatus according to claim 1, wherein (n is a natural number) hard disk drives. 3. The method according to claim 1, wherein the rearrangement of the encoded data recorded in the discrete area on the disk to the continuous area on the disk is performed according to a user's instruction and setting. Alternatively, the recording / reproducing apparatus according to claim 2. 4. Encoded data recorded in a discrete area on a disc having relevance to program information is encoded by video signal encoding / decoding means, audio signal encoding / decoding means,
4. The recording / reproducing apparatus according to claim 1, wherein the program information is re-compressed by a program information encoding / decoding means and then rearranged in a continuous area on the disk. . 5. Encoded and recorded video signals, audio signals and program information on n (n is a natural number) discs, decodes and reproduces the encoded and recorded data, and executes the encoded and recorded program. Performing a search on information, and relocating encoded data recorded in discrete areas of the n arbitrary disks having relevance as a result of the search to a continuous area on the disk Recording / reproducing method characterized by the above-mentioned.