JP4879196B2 - Optical disc drive and recording / reproducing apparatus - Google Patents

Description

  The present invention relates to an optical disc drive for writing and reading information on an optical disc recording medium such as a DVD, and a recording / reproducing apparatus including the optical disc drive.

In recent years, various contents including moving images are recorded on an optical disk recording medium (hereinafter simply referred to as “optical disk”) such as a DVD-RW disk which is a large-capacity recording medium, and the contents recorded on the optical disk are reproduced when necessary. Recording / playback apparatuses that perform such operations have been put into practical use. For example, it is a recording / reproducing apparatus that records a program such as a movie broadcast on BS digital broadcasting or high-vision broadcasting (hereinafter referred to as a broadcast program) on an optical disc.

  A conventional recording / reproducing apparatus including an optical disk drive having a function of recording and reproducing contents generally includes a hard disk drive (hereinafter referred to as HDD) having a large-capacity storage area in addition to the optical disk drive. The reason why the conventional recording / reproducing apparatus having the optical disk drive includes the HDD is mainly due to the following reason.

(1) For example, when a broadcast program received from a tuner included in a recording / reproducing apparatus is recorded on an optical disk of an optical disk drive, if the storage area remaining on the optical disk decreases, a magnetic recording medium (magnetic disk) of the HDD ) To record the continuation of this content.
(2) If a problem occurs in the optical disk drive while content is being recorded on the optical disk of the optical disk drive, the continuation of this content is recorded on the magnetic disk of the HDD drive.
(3) An HDD drive having a large capacity storage area is used for recording a plurality of types of content. The optical disc drive is used for, for example, dubbing one designated content from the plurality of types of content stored in the HDD drive onto the optical disc.

  FIG. 8 shows an example of a control method for recording and reproducing content in a recording / reproducing apparatus having a conventional optical disk drive and HDD. The outline of the conventional recording / reproducing apparatus shown in FIG. 8 will be described as follows.

  The conventional recording / reproducing apparatus 50 shown in FIG. 8 mainly includes units such as a CPU control unit 51, an optical disk drive 52, and an HDD 53. The CPU control unit 51 includes a CPU 54, a main control unit 55, a tuner 56, a content reception processing unit 57 including a circuit that demodulates information related to content such as a broadcast program received by the tuner 56, and a demodulated content. Among the information, AV data, that is, data composed of audio / visual signals, stored in the video storage memory 58 and the video storage memory 58 for temporarily storing information including the video signal and the audio signal. An HDD I / F unit 59 and an optical disk I / F unit 60 for performing processing (such as recording) of writing AV data to a recording medium of the optical disk drive 52 or the HDD 53 are provided.

  Further, the CPU control unit 51 reproduces the content recorded on the optical disk of the optical disk drive 52 or the magnetic disk of the HDD 53 and outputs it to the display device 63, and the remote control 64 operated by the user. Is provided with a remote control input / output circuit unit 62 for processing an operation signal from the remote control.

  In the conventional recording / reproducing apparatus 50 configured as described above, the CPU 54 is a central processing unit that controls the operation of the recording / reproducing apparatus 50 by controlling the operation of various programs provided in the main control unit 55. Various programs are recorded in the ROM 54a. The RAM 54b shown in FIG. 8 is a memory used by various programs as a work area or the like.

The main control unit 55 of the CPU control unit 51 includes a content read / write control unit 55a, a remote control signal analysis program 55b for analyzing an operation signal from the remote control 64, as programs for controlling the operation of the recording / reproducing device 50. A content control program 55c1 and a file system 55d1 for controlling content writing and reading processing on the optical disk of the optical disk drive 52, and control of content writing and reading processing on the magnetic disk of the HDD 53 Content control program 55c2, a file system 55d2, and the like. The content read / write control unit 55a described above is a program for controlling the operation of the recording / reproducing apparatus 50 in an integrated manner.

  In the conventional recording / reproducing apparatus 50, among the programs included in the main control unit 55, the content control programs 55c1 and 55c2 and the file systems 55d1 and 55d2 are provided separately for the optical disc drive 52 and the HDD 53, respectively. It was. For this reason, the conventional recording / reproducing apparatus 50 has the following problems.

(1) If the content control program and the file system program are provided for the optical disk drive and the HDD, respectively, the capacity of these programs becomes extremely large and the program configuration becomes complicated.

(2) Based on the input signal from the remote controller 64, when the CPU control unit 51 performs a process of recording (recording) information related to content such as a broadcast program on the optical disc of the optical disc drive 52, AV of the content related information While performing the process of writing data (AV signal) to the optical disk, it is necessary to perform the process of writing the management information related to the content to the optical disk. The management information includes, for example, the title name of the broadcast program to be recorded, the recording date, the position information of the GOP, the file name given when recording (recording) AV data on the optical disc, and the management information. The file name given when recording on the optical disc, and the like. In addition, the information related to the title of a broadcast program is transmitted at a predetermined time interval in a broadcast signal received by the tuner 56.
Information (program sequence information) can be extracted from the information included.

  The optical disk can be randomly accessed like a magnetic disk, but has poor seek characteristics. For this reason, when the received content is recorded on the optical disc, if the processing for writing the management information on the optical disc is performed while the AV data is written on the optical disc in real time, the optical disc has poor seek characteristics. In some cases, the timing of writing AV data and management information to the optical disc may not match. As a result, there arises a problem that AV data or management information cannot be normally recorded on the optical disc.

  As a means for solving the problem described in (2) above in a recording / reproducing apparatus provided with an optical disk drive, for example, inventions described in Patent Documents 1 and 2 below have been proposed. The inventions described in these patent documents temporarily store part of information related to contents in a buffer memory provided in a recording / reproducing apparatus or a cache memory which is a high-speed memory, and based on control from the main CPU, This is a technique for shortening the access time of an optical disc by performing a process of writing information relating to content stored in a cache memory to the optical disc.

JP 2003-280957 A JP-A-2005-339606

  The inventions described in Patent Documents 1 and 2 are techniques for shortening the seek time for an optical disc by temporarily storing directory and file information of information relating to content in a high-speed memory. However, there is no disclosure about controlling the read / write processing of information related to contents to the optical disc drive and the HDD drive by a common file management system (file system).

  Therefore, a first object of the present invention is to record AV data of content on an optical disc with high reliability in a recording / reproducing apparatus that records and reproduces information related to the optical disc drive or content including the optical disc drive and HDD. It is an object of the present invention to provide an optical disk drive that can be used. Furthermore, a second object of the present invention is to enable control for reading / writing information related to contents to / from an optical disc drive or HDD by a common program means in a recording / reproducing apparatus including an optical disc drive and an HDD. Another object of the present invention is to provide an improved recording / reproducing apparatus.

The present invention relates to a non-volatile memory, a process of writing information relating to content transmitted from the upper CPU section to an optical disc recording medium, and reading information relating to the content recorded on the optical disc recording medium to the upper CPU section. An optical disk drive comprising a read / write control means for performing a transmission process, wherein the read / write control means writes AV data of information relating to the content transmitted from the host CPU section to the optical disk recording medium in real time. AV data writing means for performing a process for recording data, and management information for performing a process for writing information relating to the content to the optical disc recording medium when the AV data writing means is in operation. Management information temporary storage means for storing the management information and a management information write signal from the upper CPU section When There transmitted, and a management information writing means for performing the said management information temporarily stored in the non-volatile memory write to the optical disc recording medium processing, the optical disc recording medium is a high density optical disc recording medium And the management information includes program arrangement information extracted from the received broadcast signal and a file name set for the AV data of the broadcast program to be recorded. The management information temporary storage means , A storage start area corresponding to the file name of the AV data and a storage start area of the management information corresponding to the file name are set in the optical disk recording medium, and the AV data writing means receives the AV data The data is sequentially stored from the storage start area corresponding to the file name of the AV data, and the management information writing means includes the management information From the storage start region, it is characterized by sequentially storing the management information.

In the optical disk drive of the present invention, the management information temporary storage means stores GOP position information indicating where a head position of the GOP (Group Of Pictures) of the AV data corresponds to a recording area of the optical disk recording medium. The management information is stored in the nonvolatile memory using a seek time .

In addition, the present invention provides a host CPU unit including a unit that performs reception processing of information related to content and reproduction processing of information related to the content based on the control of the content read / write control unit,
Non-volatile memory, processing for writing the information related to the content received and processed by the upper CPU unit to the optical disc recording medium, and reading the information related to the content recorded on the optical disc recording medium and transmitting the information to the upper CPU unit An optical disk drive including a read / write control means for performing processing,
Read / write control means of the optical disk drive,
AV data writing means for performing processing for writing the AV data of the information related to the content transmitted from the upper CPU section to the optical disc recording medium in real time;
Management information temporary storage means for temporarily storing the management information related to the content in the nonvolatile memory when the AV data writing means is operating;
Management information writing means for performing processing of writing the management information temporarily stored in the nonvolatile memory into the optical disc recording medium when a management information write signal is transmitted from the upper CPU section. It is characterized by that.

Furthermore, the recording / reproducing apparatus of the present invention comprises a hard disk drive connected to the upper CPU unit,
The content read / write control unit included in the upper CPU unit includes a common file system for performing read / write processing of information related to the content in the optical disk drive and the hard disk drive. .

  Furthermore, in the recording / reproducing apparatus of the present invention, the optical disk recording medium is a high density optical disk recording medium.

  The high-density optical disk described above refers to a rewritable large-capacity (currently about 50 GB maximum) phase-change optical disk recording medium such as a so-called Blu-ray Disc. The above-mentioned contents include program broadcast data such as BS digital broadcasts, high-definition television broadcasts, etc., video data including movies that can be downloaded via the Internet communication network, and various game applications. Includes software, etc.

  According to the optical disk drive of the present invention as set forth in claim 1, the AV data writing means for performing processing for writing the AV data of the information related to the content transmitted from the upper CPU section onto the optical disk recording medium in real time, and this AV Management information temporary storage means for temporarily storing, in the nonvolatile memory, management information for performing processing for writing information relating to the content on the optical disk recording medium when the data writing means is operating, and a host CPU section Management information writing means for performing a process of writing management information temporarily stored in the nonvolatile memory to the optical disc recording medium when a management information write signal is transmitted. As a result, the AV data is written into the optical disk recording medium in real time, the management information is temporarily stored in the nonvolatile memory, and when all the AV data is written in the optical disk recording medium, the nonvolatile data is stored in the nonvolatile memory. Since the stored management information can be written into the optical disc recording medium, the AV data related to the content and the management information can be surely written into the optical disc recording medium.

  According to the optical disk drive of the present invention as set forth in claim 2, by using a high-density optical disk recording medium, in particular, a Blu-ray Disc, as an optical disk recording medium to be read / written by this optical disk drive, BS One of the programs such as digital broadcasting and high-definition television broadcasting can be reliably recorded on one optical disk.

  According to the recording / reproducing apparatus of the present invention as set forth in claim 3, the optical disk drive connected to the upper CPU section writes the AV data of the information related to the content transmitted from the upper CPU section on the optical disk recording medium in real time. AV data writing means for performing a process for recording data, and management information for performing a process for writing information relating to the content on the optical disk recording medium when the AV data writing means is operating is temporarily stored in the nonvolatile memory. Management information temporary storage means for performing management information writing means for performing processing of writing management information temporarily stored in the nonvolatile memory to the optical disc recording medium when a management information write signal is transmitted from the host CPU section It is equipped with. As a result, the AV data is written into the optical disk recording medium in real time, the management information is temporarily stored in the nonvolatile memory, and when all the AV data is written in the optical disk recording medium, the nonvolatile data is stored in the nonvolatile memory. Provided is a recording / reproducing apparatus capable of reliably writing AV data related to content and management information to an optical disk recording medium because the stored management information can be written to the optical disk recording medium. Can do.

  According to the recording / reproducing apparatus of the present invention as set forth in claim 4, the optical disk drive and the hard disk drive are connected to the upper CPU unit, and the content read / write control unit provided in the upper CPU unit includes the optical disk drive and the hard disk Since a common file system for performing read / write processing of information related to content with respect to the drive is provided, the program capacity of the content read / write control unit can be reduced and simplified.

  According to the recording / reproducing apparatus of the present invention as set forth in claim 5, a high-density optical disc recording medium, particularly a Blu-ray Disc (Blu-Ray Disc) is used as an optical disc recording medium to be read / written by an optical disc drive connected to the recording / reproducing device. ), One of programs such as BS digital broadcasting and high-definition television broadcasting can be reliably recorded on one optical disk.

  The best mode for carrying out the present invention will be described below with reference to the drawings. FIG. 1 is a control block diagram for explaining the configuration of an embodiment of a recording / reproducing apparatus 1 having an optical disk drive according to the present invention.

  A recording / reproducing apparatus 1 shown in FIG. 1 includes a host CPU unit 2 and an optical disk drive 3 connected to the host CPU unit 2. The recording / reproducing apparatus 1 receives, for example, a content such as BS digital broadcast or high-definition broadcast which is a broadcast program and records it on the optical disc 24 inserted in the optical disc drive 3 or reads the content recorded on the optical disc 24. It has a function for playback.

  The host CPU unit 2 receives a broadcast signal of a broadcast program (content) selected by the tuner 7 based on the control of the main control unit 6 and the content read / write control unit 6, which control the operation of the recording / reproducing apparatus 1 by the CPU 5. A content reception processing unit 8 that receives and demodulates the received broadcast signal, and further separates and extracts the demodulated broadcast signal from AV data (AV signal) and management information of the content, content reception From a video storage memory 9 for temporarily storing AV data separated by the processing unit 8, an interface (I / F) circuit for performing processing for transmitting the AV data temporarily stored in the video storage memory 9 to the optical disc drive 3, and the like. The optical disk I / F unit 13 is provided. The optical disk I / F unit 13 also includes a circuit for compressing the separated AV data into the MPEG2 format or the like.

  Further, the host CPU unit 2 performs a remote control input / output circuit 11 for inputting an operation signal from the remote controller 17 operated by the user and the optical disc drive 3 in order to execute various functions provided in the recording / reproducing apparatus 1. The content reproduction processing unit 12 is provided for reading the content recorded on the optical disc 24 inserted into the optical disc 24 under the control of the main control unit 6 and reproducing and displaying the content on the display device 18 such as a liquid crystal display device. . The host CPU unit 2 includes a ROM 14, a RAM 15, and a timer 16 that counts the current time (year / month / day / hour / minute / second).

The optical disk drive 3 shown in FIG. 1 stores contents on the optical disk 24 according to the control of the read / write control unit 22 that controls the operation of the optical disk drive 3 by the CPU 21, the nonvolatile memory 23 such as a flash memory, and the read / write control unit 22. An optical pickup control unit 25 that controls driving of the optical pickup that performs read / write (read / write) processing of the information is configured. Optical pickup control unit 25, semiconductor laser Za, a stepping motor for controlling the rotational driving of the optical disk 23, and a like I / F circuit for controlling the operation of these members.

  The optical disk drive 3 includes a ROM that stores various programs constituting the read / write control unit 22 and a RAM that is used by these programs as a work area (calculation area). The read / write control unit 22 serving as a read / write control means includes a program shown in FIG. The main control program 22a shown in FIG. 2 is a program that performs processing for analyzing (determining) a control command transmitted from the host CPU unit 2. The main control program 22a controls the operation of a subprogram that performs a preset process based on the result of analyzing the control command.

  These subprograms include an AV data writing program 22b serving as AV data writing means for performing processing for writing AV data of information relating to the content transmitted from the host CPU unit 2 to the optical disc 24 in real time, and this content. Before storing the management information on the optical disk 24, the management information temporary storage program 22c, which is a management information temporary storage means for temporarily storing the management information in the nonvolatile memory 23, is temporarily stored in the nonvolatile memory 23. A management information writing program 22d serving as management information writing means for performing processing for recording the management information on the optical disc 24, a content reading program 22e for reading information stored on the optical disc 24, and the like are provided.

  For example, when a control command relating to writing of AV data of content is transmitted from the upper CPU unit 2, the main control program 22 a operates the AV data writing program 22 b, and from the upper CPU unit 2 following this control command. The AV data that is sequentially transmitted is received, and the received AV data is written to the optical disc 24 in real time. At this time, the AV data writing program 22b performs the process of writing the AV data on the optical disc 24 in real time, and the start position of the GOP (Group Of Pictures) of the AV data recorded on the optical disc 24 is where in the recording area of the optical disc 24. GOP position information indicating whether or not it corresponds to the management information is also stored in the nonvolatile memory 23 as management information.

  When a control command related to temporary storage processing of management information is transmitted from the upper CPU unit 2, the main control program activates the management information temporary storage program 22c and transmits it from the upper CPU unit 2 following this control command. The management information to be stored is stored in the nonvolatile memory 23. The management information transmitted from the upper CPU unit 2 includes the title of the broadcast program to be recorded, the recording date, the file name given to the AV data of the broadcast program to be recorded on the optical disc, and the same information recorded on the optical disc. File name assigned to the management information to be managed.

  Further, when a control command for performing processing for writing information related to management information stored in the nonvolatile memory 23 to the optical disk 24 is transmitted from the upper CPU unit 2, the main control program activates the management information writing program 22d. Thus, the management information stored in the nonvolatile memory 23 is written into the optical disc 24.

  The optical disc 24 is a high-density and large-capacity optical disc employing a rewritable phase change recording method such as a Blu-ray Disc (registered trademark). The reason for using the high-density and large-capacity optical disc 24 such as a Blu-ray disc as the recording medium of the optical disc drive 3 constituting the recording / reproducing apparatus 1 of the present invention is as follows. The recording capacity of a conventional rewritable DVD is generally a maximum of several GB (gigabytes), but a high-density and large-capacity optical disc 24 such as a Blu-ray disc has a recording capacity of 50 GB or more by providing two or more recording layers. Since a large-capacity storage area can be provided, it is possible to record a plurality of types of programs on a single Blu-ray disc 24 even in high-definition broadcasting, and it is portable for the user to operate. This is because the properties are extremely excellent.

Nonvolatile memory 23 that is an optical disc drive 3 according to the present invention comprises has its management information among the information relating to content stored on the optical disc 24, once, it is characterized by the use as a means for storing. That is, the AV data of the content transmitted from the upper CPU unit 2 is processed in real time, and the management information related to the content is temporarily stored in the nonvolatile memory 23.

  Then, when a control command for performing processing for writing information related to management information stored in the nonvolatile memory 23 to the optical disc 24 is transmitted from the upper CPU unit 2, the management information stored in the nonvolatile memory 23 is transferred to the optical disc 24. Process to write to. By performing such processing, the AV data of the content transmitted from the upper CPU unit 2 can be securely written to the optical disc 24 in real time. By adopting means for executing such processing, the optical disc 24 can compensate for the disadvantage that the optical disc 24 has poor seek characteristics and can reliably store both AV data and management information relating to the content on the optical disc 24. 3 becomes possible.

  The content read / write control unit 6 serving as the content read / write control means of the upper CPU unit 2 shown in FIG. 1 includes various programs for the CPU 5 to control the operation of the recording / reproducing apparatus 1. As shown in FIG. 1, these programs are composed of a main control program 6a, a content control program 6b, a file management program (file system) 6c, a remote control signal analysis program 6d, and the like. These programs 6b, 6c and 6d are executed under the control of the main control program 6a. Note that these programs 6 a to 6 are stored in the ROM 14.

  A main control program 6a provided in the host CPU unit 2 is a program for controlling the operation of the recording / reproducing apparatus 1 in an integrated manner, and is mainly based on an operation signal from a remote controller 17 operated by a user. A process for controlling and controlling the process of reading and writing information related to the optical disk 24 of the optical disk drive 3 is performed. These controls are executed based on preset control commands (see FIG. 3).

  The content control program 6b receives content such as a recording reservation program and a broadcast program reserved for recording when the user makes a recording reservation by operating the remote controller 17 and records it on the optical disc 24. In order to reproduce the content recorded on the optical disc 24, the recording processing program for controlling the reproduction of the recording command is transmitted to the optical disc drive 3 and the AV data transmitted from the optical disc drive 3 is reproduced. Various control application programs for controlling the operation of the recording / reproducing apparatus 1, such as a reproduction processing program for performing reproduction and display on the display device 18 are provided.

The file system 6c is a file management program for performing file management of information related to content when the main control program 6a performs control of reading / writing information related to the content to / from the optical disc drive 3, so-called file systems. It is composed of programs. The file system 6c is, for example, a process for defining the file format, a process for setting the file name, a process for setting the recording date of the file, etc. It consists of a program that performs As this file system, UDF (Universal
Disc format) can be used.

  The remote control signal analysis program 6d is a program for performing processing for analyzing the operation signal when the operation signal from the remote control 12 operated by the user is input to the main control unit 6 via the remote control input / output circuit 13. It is. The main control program 6a acquires the operation signal analyzed by the remote control signal analysis program 6d, and controls the operation of the recording / reproducing apparatus 1 so that processing corresponding to the acquired operation signal is executed.

  The read / write control unit 22 of the optical disc drive 3 includes a program that mainly receives each control command transmitted from the host CPU unit 2 as an interrupt signal, and performs a preset process for each received control command. .

  The read / write control unit 22 provided in the optical disc drive 3 according to the present invention controls the operation of the optical disc drive 3 based on the control command transmitted from the main control program 6a of the host CPU unit 2 as described above. FIG. 3 shows an example of this control command.

  As shown in FIG. 3, this control command can be composed of, for example, two types of code systems, that is, a drive classification code c1 and a processing code c2. The drive classification code c1 is composed of a two-digit code. The first digit is information for classifying a drive to be read / written, and “B” shown in FIG. 3 indicates an optical disk drive. In the second digit of the drive classification code c1, “D” is set when the target of the read / write process is the optical disc 24, and “F” is set when the target is the nonvolatile memory 23.

  In the example shown in FIG. 2, when “BD” is set in the drive classification code c1, the control target is the optical disc 24 of the optical disc drive 3, and when “BF” is set, the control target is the optical disc drive. 3 of the non-volatile memory 23.

  The processing code c2, which is a code for sorting the control processing contents, can be composed of, for example, two digits. In the example shown in FIG. 3, the first digit of the processing code c2 is a code for distinguishing whether the processing content is a writing process or a reading process, and “W” indicates a writing process, “R” indicates a writing process. Reading processing is performed, and “D” indicates that processing for deleting stored information is performed. The second digit of the processing code c2 is a code for discriminating whether the read / write processing is performed, for example, the nonvolatile memory 23 or the optical disc 24, and a specific read / write target is specified. The set code is shown.

  An example of a control command transmitted from the upper CPU unit 2 to the optical disc drive 3 with respect to the control command composed of a 4-digit code shown in FIG. 3 is as follows.

  Among the four-digit control commands transmitted from the upper CPU unit 2 to the optical disc drive 3, for example, “BDW1” shown in FIG. 3 writes AV data transmitted from the upper CPU unit 2 to the optical disc 24 in real time. Indicates a control command for processing. When the optical disk drive 3 receives this control command “BDW1”, the optical disk drive 3 subsequently receives AV data sequentially transmitted from the host CPU unit 2 in a predetermined data length unit, temporarily stores it in the RAM, and stores it in the RAM. Then, the AV data is sequentially written to the optical disc 24.

  Similarly, the control command “BFW2” indicates a control command for performing a process of writing the management information transmitted from the upper CPU unit 2 to the nonvolatile memory 23 provided in the optical disc drive 3. When the optical disk drive 3 receives this control command “BFW 2”, the management information subsequently transmitted from the host CPU unit 2, that is, the title of the broadcast program to be recorded, the recording date, AV data to be stored on the optical disk 24, A process of recording the file name set for the management information in the nonvolatile memory 23 of the optical disc drive 3 is performed.

  Similarly, the control command “BDR1” is information relating to AV data of content recorded on the optical disc 24, and reads the AV data having the file name instructed (transmitted) from the upper CPU unit 2 to read the upper CPU unit 2. This is a control command for performing processing to be transmitted to. Similarly, the control command “BFR2” indicates a control command for performing a process of reading management information recorded in the nonvolatile memory 23 of the optical disc drive 3 and writing it to the optical disc 24. These control commands may be ATAPI commands.

  Subsequently, with regard to the operation of the recording / reproducing apparatus 1 of the present invention, a processing example when receiving a broadcast program such as BS digital broadcast and recording the received content on the optical disc 24 of the optical disc drive 3 will be described with reference to FIGS. Based on FIG. 4 is a flowchart showing an example of a processing procedure when the main control program P6a of the host CPU unit 2 performs this recording process. FIG. 5 is a flowchart showing an example of a processing procedure for a control command transmitted based on the control of the main control program P6a of the host CPU unit 2.

  First, the processing procedure of the host CPU unit 2 will be described in the order of steps shown in FIG. When recording a broadcast program, for example, the user operates the remote controller 17 to make a reservation for recording a broadcast program to be recorded in advance. As a result, the recording reservation program is activated, and information related to the recording reservation (recording start date and time, channel number, etc.) is stored in the RAM 15. At this time, the user needs to insert the recording optical disk 24 into the optical disk drive 3. Note that the user may operate the remote controller 17 to immediately record the broadcast program currently being broadcast. In the following description, a case where a broadcast program reserved for recording in advance is recorded on the optical disc 24 will be described as an example.

(Step S1)
The main control program 6a of the host CPU unit 2 performs processing for checking whether or not recording reservation data is stored in the RAM 15 at predetermined time intervals. When the recording reservation data is stored, the current time of the timer 16 is referred to and it is determined whether or not the current time has reached the broadcast start date / time / minute of the program reserved for recording. Perform the process. As a result of the determination process, if it is determined that the current time has reached the recording start time, the process proceeds to the next step S2.

(Step S2)
Since it is determined that the current time has reached the recording start time, the main control program P6a controls the tuner 7 so that the broadcast program of the channel reserved for recording can be received and activates the optical disc drive 3. A control command (start command) is transmitted to the optical disc drive 3. The main control program provided in the read / write control unit 22 of the optical disc drive 3 determines whether or not the optical disc drive 3 is ready for recording when receiving this drive command from the host CPU unit 2 and displays the determination result. A reply is sent to the upper CPU unit 2. Then, when the main control program P6a of the upper CPU unit 2 receives a control command indicating that “recording is possible” from the optical disc drive 3, the process proceeds to step S3. When the control command indicating that the main control program P6a of the upper CPU unit 2 is not ready for recording is received, a process of lighting an error lamp (LED) or the like is performed.

(Step S3)
The time of the timer 16 is read to determine whether or not the current time has reached the broadcast end time of the broadcast program reserved for recording. As a result of the determination process, if the broadcast end time has not been reached, the process proceeds to the next step S4, and if the broadcast end time has been reached, the process proceeds to step S8.

(Step S4)
The main control program 6a executes control for performing reception processing and recording processing of a program (content) reserved for recording by operating the recording processing program among programs constituting the content control program. As this reception process, for example, the following processes (1) and (2) are performed.

(1) The broadcast signal received by the tuner 7 is decrypted by the content reception processing unit 8 to be separated into information relating to AV data and management information. Then, the AV data separated from the broadcast signal is sequentially stored temporarily in the video storage memory 9.

(2) On the other hand, the separated management information is stored in the RAM 15. As the management information added to the broadcast signal of the broadcast program to be recorded, the above-described SI (program arrangement information) is transmitted in the broadcast signal at a predetermined time interval. As a result, when receiving the broadcast signal reserved for recording, the recording processing program can extract the SI information and store it in the RAM 15 in a short time, and extract the title name of the program to be recorded and the like. In addition to the title name of this program as the management information, the recording processing program records the recording date, the file name set in the AV data of the broadcast program recorded on the optical disc 24, and the management information related to the broadcast program to be recorded. A process for storing the file name and the like set in the RAM 15 is also performed.

(Step S5)
It is determined whether or not the storage content of the management information transmission completion flag set in advance in the RAM 15 is “0”, for example. If "0" is stored as a result of this determination, the process proceeds to the next step S6, and if "1" is stored, the process proceeds to step S7. The management information transmission flag indicates whether the program title name, recording date, etc., which are management information related to the broadcast program stored in the RAM 15 in the process of step S3, have been transmitted to the optical disc drive 3. For example, the recording processing program performs a process of storing “0” if it has not been transmitted yet and “1” if it has already been transmitted. .

(Step S6)
The main control program P1 transmits the control command “BFW2” to the optical disc drive 3, and then performs a process of transmitting the management information stored in the RAM 15 to the optical disc drive 3 in the process of step S4. When this transmission process is completed, “1” is stored in the management information transmission completion flag.

  When the management information temporary storage processing program 22 c included in the read / write control unit 22 of the optical disk drive 3 receives this management information from the host CPU unit 2, it performs a process of storing the received management information in the nonvolatile memory 23.

(Step S7)
The recording processing program of the upper CPU unit 2 transmits a control command “BDW1” to the optical disc drive 3. When the optical disk drive 3 receives a response command to the control command, the optical disk drive 3 sequentially takes out the predetermined data amount (length) of the AV data temporarily stored in the video storage memory 9 by the first-in first-out method, and the optical disk I / F unit The process of transmitting to the optical disc drive 3 via 13 is performed. In this process, the optical disk I / F unit 13 also performs data compression processing of the AV signal by MPEG2. When a predetermined data amount of the AV signal temporarily stored in the video storage memory 9 is transmitted to the optical disc drive 3, the process returns to step S3. As described above, the main control program P6a of the upper CPU unit 2 repeats the processes of steps S3 to S7, thereby sequentially determining the predetermined data amount of the AV data related to the broadcast program received by the tuner 7 in real time on the optical disk drive. 3 to send. The AV data writing program 22b of the optical disc drive 3 can record (store) the received AV data on the optical disc 24 in real time.

  When the management information temporary storage processing program 22c provided in the read / write control unit 22 of the optical disc drive 3 receives the management information accompanying the control command “BDW1” from the upper CPU unit 2, the file name set in the AV data described above And a storage start area for storing management information corresponding to the file name set in the management information on the optical disk 24 is determined. Thus, the AV data writing program 22b can sequentially store the received AV data from the storage start area set in the optical disc 24 in association with the file name of the AV data.

  When the optical disk drive 3 performs processing for recording the AV data received from the host CPU unit 2 on the optical disk 24, a slight seek time is required. Therefore, AV data is recorded on the optical disk 24 by using this seek time. Information related to the GOP and the like is stored in the nonvolatile memory 23 as management information.

(Step S8)
Since it is determined that the recorded broadcast program has ended, the control command “BFR2” for performing the process of storing the management information stored in the nonvolatile memory 23 by the optical disc drive 3 on the optical disc 24 is sent to the optical disc drive 3. Send.
When the process of step S8 is performed, the control of the recording process on the optical disc 24 by the main control program P6a of the host CPU unit 2 is completed.

  When the optical disk drive 3 receives the control command “BFR2” from the upper CPU unit 2 in step S8, the management information writing program 22d performs a process of storing the management information stored in the nonvolatile memory 23 on the optical disk 24. . In this processing, processing is sequentially performed from the storage start area set on the optical disc 24 in association with the file name of the management information.

  Note that the main control program 6a of the upper CPU unit 2 stops the execution of the recording processing program when a recording end operation signal is input from the remote controller 17 even when the current time does not reach the recording end time. At the same time, the control command for forced recording termination (SYNC command) is transmitted to the optical disc drive 3. When the read / write control unit 22 of the optical disk drive 3 receives the control command for forced recording termination, the read / write control unit 22 performs a process of writing the recording management information stored in the nonvolatile memory 23 onto the optical disk 24.

  Next, the operation of the optical disc drive 3 will be described. FIG. 5 is a flowchart showing a flow of processing in which the main control program 22 a of the read / write control unit 22 controls the operation of the optical disc drive 3 when a control command is transmitted from the upper CPU unit 2 to the optical disc drive 3. Hereinafter, description will be made in the order of steps shown in FIG.

(Step S11)
When a control command is transmitted from the upper CPU unit 2, the main control program 22a processes this control command as an interrupt signal (reception interrupt). Then, a process (interrupt analysis) is performed for determining which control command is a control command among the preset control commands shown in FIG.

(Step S12)
In step S12, first, for example, it is determined whether or not the received control command is “BDW1” (write command to the optical disc) shown in FIG. As a result of this determination processing, if it is determined that the received control command is “BDW1”, the process proceeds to step S13, and if not, the process proceeds to step S14.

(Step S13)
Since the control command received from the host CPU unit 2 coincides with “BDW1”, the main control program activates the AV data writing program 22b. The AV data writing program 22b refers to the management information stored in the nonvolatile memory 23 first, and sets a write start area of the optical disk 24 for writing AV data transmitted from the host CPU unit 2 to the optical disk 24. Perform the requested process. Subsequently, while receiving a predetermined amount of AV data transmitted from the upper CPU unit 2 following the control command “BDW1”, the received AV data is sequentially written from the above-described write start area of the optical disc 24. .

The upper CPU unit 2 performs processing for sequentially transmitting the AV data of the received broadcast signal to the optical disc drive 3 in real time. Therefore, the main control program 22a repeats the process of step S13 until, for example, the control command “BFR2” is transmitted from the host CPU unit 2 (step SS16). Thereby, the AV data transmitted from the host CPU unit 2 can be written in real time to the optical disc drive 24.
In the process of step S13, the track number in which the AV data is written in the content information storage area of the optical disc 24 is stored as management information in the nonvolatile memory 23 by the management information temporary storage program 22c.

(Step S14)
It is determined whether or not the control command received from the host CPU unit 2 is “BFW2” (write command to the nonvolatile memory 23). As a result of the determination process, if it is determined that the received control command is “BFW2”, the process proceeds to step S15, and if not, the process proceeds to step S16.

(Step S15)
Since the control command received from the upper CPU unit 2 coincides with “BFW2”, the management information temporary storage program 22c subsequently receives the management information transmitted from the upper CPU unit 2. Then, the received management information is written into the nonvolatile memory 23, and the interrupt process is terminated. The additional information includes the title name of the program to be recorded, the recording date, the file name for storing AV data, the file name for storing management information, and the like as described above.

(Step S16)
It is determined whether or not the control command received from the host CPU unit 2 is “BFR2” (command for writing management information to the optical disk). As a result of this determination processing, if it is determined that the received control command is “BFR2”, the process proceeds to step S17, and if not, the process proceeds to step S18.

(Step S17)
Since the control command received from the upper CPU unit 2 matches “BFR2”, the management information writing program 22 d reads the management information recorded in the nonvolatile memory 23 and stores this recording management information in the optical disk 24. Perform the process. In this process, a process of sequentially storing from the storage start area set in association with the file name of the management information stored as management information in the nonvolatile memory 23 is performed.

(Step S18)
It is determined whether or not the control command received from the host CPU unit 2 is “BDR1” (optical disk read command). As a result of this determination processing, if it is determined that the received control command is “BDR1”, the process proceeds to step S19, and if not, the process proceeds to step S20.

(Step S19)
Since the control command received from the host CPU unit 2 matches “BDR1”, the main control program 22a activates the content reading program 22e. The content reading program 22e first performs a process of storing file information related to management information stored in the optical disk 24 inserted in the optical disk drive 3 in the nonvolatile memory 23, and a process of transmitting the file information to the upper CPU unit 2 as well. I do.

  Upon receiving the file information related to the management information from the optical disk drive 3, the upper CPU unit 2 displays, for example, a reproduction processing program, a program title name included in the received file information related to the management information, and its recording date and time. 18 is displayed. Then, when the user operates the remote controller 17 to specify the program title name desired to be reproduced from the program title name displayed on the display device 18, the program title name is transmitted to the optical disc drive 3.

  When the optical disc drive 3 receives the program title name from the host CPU unit 2, it determines whether or not the received program title name is stored in the nonvolatile memory 23. If the program title name is stored in the non-volatile memory 23 as a result of this determination processing, processing for obtaining the top track number of the storage area of the optical disc 24 storing the content related to the program title name is performed. The head track number can be obtained because it is stored in the nonvolatile memory 23 in association with the file corresponding to the program title name.

  Subsequently, while the content reading program 22e reads the content related to the file name corresponding to the program title name stored from the top track number of the optical disc 24 obtained by the above processing, the read AV signal is sequentially transferred to the upper level. Processing to transmit to the CPU unit 2 is performed.

  Based on the processing of step S19, when the upper CPU unit 2 receives AV data from the optical disk drive 3 via the optical disk I / F unit 13, the upper CPU unit 2 uses the reproduction processing program to convert the AV data into a content reproduction processing unit. 12 to perform a decoding process or the like, and a process of reproducing and displaying on the display device 18 is performed. Thus, the user can view the content recorded on the optical disc 24 on the display device 18.

(Step S20)
In step S20, processing other than the control command executed in the processing in steps S11 to S19 is executed.

The recording / reproducing apparatus 1 according to the present invention described above performs processing for writing AV data of content transmitted from the host CPU unit 2 on the optical disc 24 of the optical disc drive 3 in real time. On the other hand, the management information related to the content is stored in the nonvolatile memory 23, and when the management information write signal is transmitted , the management information stored in the nonvolatile memory 23 is stored in the optical disc 24. ing. As a result, the AV data and management information of the content transmitted from the upper CPU unit 2 can be reliably stored in the optical disc 24.
Also, when reproducing the content stored on the optical disc 24, the AV data stored on the optical disc 24 is read after performing the process of reading the management information stored on the optical disc 24, and the read AV data is read in real time. To the upper CPU unit 2. As a result, even when the content stored on the optical disc 24 is reproduced, it is possible to prevent the occurrence of problems due to the low seek characteristics.

  Next, a second embodiment of the recording / reproducing apparatus of the present invention will be described with reference to FIG. A recording / reproducing apparatus 1a shown in FIG. 6 has a configuration in which a hard disk drive (HDD) 4 is further connected to the upper CPU unit 2 of the recording / reproducing apparatus 1 shown in FIG. Therefore, the optical disk drive 3 and the HDD 4 are connected to the upper CPU section 2 of the recording / reproducing apparatus 1a.

  The HDD 4 includes a magnetic head (not shown) for reading / writing information from / to the magnetic disk 31, and information related to content transmitted from the host CPU unit 2 is controlled based on the control of the magnetic head control unit 32. A process of writing to 31 is performed. Further, a process of transmitting the content stored in the magnetic disk 31 to the upper CPU unit 2 based on the control of the upper CPU unit 2 is performed. The magnetic head control unit (read / write control unit) 32 includes a program and a control circuit for performing the above processing. The upper CPU unit 2 includes an HDD I / F unit 10 for transmitting and receiving information related to the content with the HDD 4.

  The recording / reproducing apparatus 1a shown in FIG. 6 differs from the configuration of the conventional recording / reproducing apparatus 50 shown in FIG. 7 as follows. That is, the content control program 6b and the file system 6c provided in the content read / write control unit 6 of the recording / reproducing apparatus 1a can control both the optical disc drive 3 and the HDD 4 in common.

  In order to make the content control program 6b and the file system 6c common to the optical disc drive 3 and the HDD 4, for example, either the following means 1 or 2 can be employed.

(Means 1)
The read / write control unit 22 provided in the optical disc drive 3 and the read / write control unit 32 provided in the HDD 4 are arranged on the basis of the control command transmitted from the main control program 6a of the upper CPU unit 2 and the respective optical disc drives 3 and The operation of the HDD 4 is controlled. As this control command, for example, a control command for controlling the operation of the HDD 4 is added to the control command for controlling the operation of the optical disc drive 3 shown in FIG. Then, the main control program 6a of the upper CPU unit 2 controls the operation of the optical disc drive 3 or the HDD 4 based on this control command.

  FIG. 7 shows an example of a control command for controlling the operation of the optical disc drive 3 or HDD 4 by the main control program 6 a of the upper CPU unit 2. As shown in FIG. 7, “M” in the first digit of the drive classification code c <b> 1 indicates that the control target is the HDD 4.

  In the example of the control command shown in FIG. 7, for example, “M0W1” is a control command for performing processing for writing information transmitted from the upper CPU unit 2 to the magnetic disk 31, and “M0R1” is also recorded on the magnetic disk 31. A control command that is content and that reads information related to the file name instructed from the upper CPU unit 2 and transmits it to the upper CPU unit 2, and “M0D0” indicates information related to the file name instructed from the upper CPU unit 2. A control command to be deleted (erased) from the magnetic disk 31 is shown.

(Means 2)
The optical disk drive 3 and the HDD 4 are connected to the upper CPU unit 2 via an ATA (AT Attachment). Then, the main control program 6a of the host CPU unit 2 controls the operations of the optical disc drive 3 and the HDD 4 based on an ATAPI (ATA Packet Interface) command. Similarly, also in the recording / reproducing apparatus 1 of the first embodiment shown in FIG. 1, the upper CPU unit 2 and the optical disk drive 3 are connected via the ATA, and the upper CPU unit 2 performs the optical disk operation based on the ATAPI command. A means for controlling the operation of the drive 3 may be employed.

In the recording / reproducing apparatus 1, 1a showing the embodiment of the present invention described above, even when a plurality of program broadcasts are continuously recorded on the optical disc, the optical disc has real-time storage in each file name area corresponding to the plurality of program broadcasts. While recording the AV data, the management information is stored in the nonvolatile memory in association with the file name corresponding to the program broadcast. Then, when all the program broadcasts are completed, the management information of the plurality of programs is stored on the optical disc.

The above-described recording / reproducing apparatuses 1 and 1a showing the embodiment of the present invention are configured as a television receiver in which the upper CPU unit 2, the optical disk drive 3, or the optical disk drive 3, the HDD 4, and the display device 14 are integrated. You can also. Further, a television receiver in which the host CPU unit 2, the display device 14, and the optical disk drive 3 are integrated is used, and the HDD 4 is connected to the television receiver with HDMI (High
(Definition Multimedia Interface) terminal can be connected via a terminal, etc., such that the upper CPU unit 2, optical disk drive 3, HDD 4, and display device 14 can be connected, or a combination of these components is integrated. Adopt it.

It is a control block diagram for demonstrating the structural example of 1st Embodiment about the recording / reproducing apparatus of this invention. It is a figure for demonstrating the structural example of the program with which the read / write control part of the high-order CPU part shown in FIG. It is a figure for demonstrating the control command for the high-order CPU part shown in FIG. 1 to control the operation | movement of an optical disk drive. FIG. 3 is a flowchart for explaining an example of a processing procedure when the read / write control unit of the upper CPU unit shown in FIG. 1 executes control of recording of information related to content with respect to the optical disc drive. FIG. 3 is a flowchart for explaining an example of a processing procedure when the optical disc drive shown in FIG. 1 executes a process of recording information related to content on an optical disc based on a control command from a host CPU unit. It is a control block diagram for demonstrating the structural example of 2nd Embodiment about the recording / reproducing apparatus of this invention. FIG. 7 is a diagram for explaining a control command for the host CPU unit shown in FIG. 6 to control operations of the optical disk drive and the magnetic disk drive. It is a control block diagram for demonstrating the structural example about the conventional recording / reproducing apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 1a: Recording / reproducing apparatus 2: High-order CPU part 3: Optical disk drive 4; Hard disk drive (HDD)
5: CPU
6: content read / write control unit 6a: main control program 6b: content control program 6c: file system 8: content reception processing unit 12: content reproduction processing unit 18: display device 21: CPU
22: Read / write control unit 22a: Main control program 22b: AV data writing program 22c: Management information temporary storage program 22d: Management information writing program 22e: Content reading program 23: Non-volatile memory 24: Optical disc recording medium (optical disc)
31: Magnetic disk

Claims (2)

Non-volatile memory, a process of writing information related to the content transmitted from the upper CPU unit to the optical disc recording medium, and a process of reading information related to the content recorded on the optical disc recording medium and transmitting the information to the upper CPU unit An optical disk drive having read / write control means for performing
The read / write control means includes
AV data writing means for performing processing for writing the AV data of the information related to the content transmitted from the upper CPU section to the optical disc recording medium in real time;
Management information temporary storage means for temporarily storing, in the nonvolatile memory, management information for performing processing for writing information relating to the content to the optical disc recording medium when the AV data writing means is operating; ,
Management information writing means for performing processing of writing the management information temporarily stored in the nonvolatile memory to the optical disc recording medium when a management information write signal is transmitted from the upper CPU section ;
The optical disc recording medium is a high density optical disc recording medium,
The management information includes program arrangement information extracted from the received broadcast signal, and a file name set for the AV data of the broadcast program to be recorded,
The management information temporary storage means sets a storage start area corresponding to the file name of the AV data and a storage start area of the management information corresponding to the file name in the optical disc recording medium,
The AV data writing means sequentially stores the received AV data from a storage start area corresponding to the file name of the AV data,
The management information writing means sequentially stores the management information from the management information storage start area.
An optical disc drive characterized by that. The management information temporary storage means uses the seek time to indicate the position information of the GOP indicating where in the recording area of the optical disc recording medium the head position of the GOP (Group Of Pictures) of the AV data corresponds. The optical disk drive according to claim 1 , wherein the management information is stored in the nonvolatile memory .

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