JP2009070477A - Information recording device, information recording method and information recording program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To attain user-friendliness when a user owns a plurality of information recording devices, by making a configuration of content the same in every device. <P>SOLUTION: The information recording device includes: an HDD (hard disk drive) 15 which records content management information; and a system microcomputer 11 which acquires contents management information which is contained in external equipment from the external equipment when communicating with the external equipment through an I/F (interface) section 19, discriminates whether or not the acquired content management information and the content management information recorded on the HDD 15 are in agreement, discriminates whether or not difference content information associated with the conflicting content management information is recorded on the HDD 15 when it is discriminated that there is conflicting content management information, acquires the difference content information from the external equipment through the I/F section 19 and makes the acquired difference content information recorded on the HDD 15 when it is discriminated that the difference content information is not recorded on the HDD 15. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an information recording apparatus, an information recording method, and an information recording program.

  In recent years, the capacity of information recording apparatuses that record music information and video information (hereinafter, content information) has increased. Among information recording devices, for example, there are devices capable of recording content information of thousands of songs.

Examples of the recorded content information include content information of a CD purchased by the user, content information purchased by the user online, and the like.
Examples of usage forms of content information include usage forms in which content information stored in a stationary information recording device is recorded and reproduced in a portable information recording device or an in-vehicle information recording device. It is done.

There is also known a technology that enables a data recording operation only when an identification code identical to a unique identification code is confirmed in data transmitted from an external device (for example, Patent Document 1). reference).
Japanese Patent Laid-Open No. 10-040639

However, in the technique of the above-described patent document, when content information is recorded from an external device, the user needs time and labor to specify the content information to be recorded.
For example, it is assumed that content information is recorded from a stationary device (external device) to a portable device (information recording device). At this time, it is assumed that a large amount of content information is recorded in the external device. In this case, the user needs to specify content information to be recorded on the information recording device from the vast amount of content information that the external device has. In addition, if there is content information previously recorded in the content information held by the external device, it is necessary to record it excluding the previously recorded content information. Furthermore, when there is content information protected by copyright in the content information held by the external device, it is necessary to record it excluding the content information protected by copyright.
For this reason, when a user owns a plurality of information recording devices, there is a demand for the convenience of the user by making the content configuration the same in any device.

An object of the present invention is to provide the convenience of the user by making the content configuration the same in any device when the user has a plurality of information recording devices.

In order to solve the above problem, an information recording apparatus according to claim 1 is provided:
A recording unit for recording content information and content management information for managing the content information;
A communication unit that communicates with an external device;
When communicating with the external device via the communication unit, the content management information of the external device is acquired from the external device, the acquired content management information and the content management information recorded in the recording unit, A first determination unit for determining whether or not match,
When it is determined by the first determination unit that there is content management information that does not match, it is determined whether or not difference content information associated with the content management information that does not match is recorded in the recording unit. Two discriminators;
When the second determination unit determines that the difference content information is not recorded in the recording unit, the difference content information is acquired from the external device via the communication unit, and the acquired difference content is acquired. A control unit for recording information in the recording unit;
Is provided.

The invention according to claim 2 is the information recording apparatus according to claim 1,
The controller is
When the second determination unit determines that the difference content information is not recorded in the recording unit, the difference content information is referred to by referring to copyright protection information included in the content management information acquired from the external device. It is determined whether or not there is copyright protection. If it is determined that the difference content information has copyright protection, dummy information corresponding to the difference content information is recorded in the recording unit.

The invention according to claim 3 is the information recording apparatus according to claim 1,
The controller is
When the second determination unit determines that the difference content information is recorded in the recording unit, the copyright protection information included in the content management information recorded in the recording unit and the external device are acquired. With reference to content management information, it is determined whether each of the difference content information has copyright protection, the difference content information recorded in the recording unit is determined to have copyright protection, and When it is determined that the recorded differential content information is not copyright-protected, the differential content information recorded in the external device is overwritten and recorded on the differential content information recorded in the recording unit.

The invention according to claim 4 is the information recording apparatus according to claim 1,
The controller is
If the second determination unit determines that the difference content information is recorded in the recording unit, the determination as to whether the difference content information recorded in the recording unit is dummy information; and With reference to copyright protection information included in the content management information acquired from the external device, it is determined whether the differential content information has copyright protection, and the differential content information recorded in the recording unit is dummy information. If the differential content information recorded in the external device is determined not to have copyright protection, the differential content information recorded in the external device is stored in the differential content information already obtained in the recording unit. Overwrite the dummy information.

The invention according to claim 5 is the information recording apparatus according to claim 1,
The controller is
When it is determined by the second determination unit that the difference content information is recorded in the recording unit, the difference content information is referred to by referring to folder attribute information included in the content management information acquired from the external device. It is determined whether or not the folder attribute information needs to be changed. When it is determined that the folder attribute information of the difference content information needs to be changed, the folder attribute information of the difference content information is acquired from the external device. To match the folder attribute information.

The invention according to claim 6 is the information recording apparatus according to any one of claims 1 to 5,
The controller is
The content management information corresponding to the difference content information recorded in the recording unit is added or rewritten.

The invention according to claim 7 is the information recording apparatus according to any one of claims 1 to 6.
The recording unit is
Recording identification information for identifying an external device permitted to share the content information;
The controller is
The unique information of the external device is acquired from the external device via the communication unit, and it is determined whether the acquired unique information is included in the identification information recorded in the recording unit. The content management information is acquired from the external device when it is determined that it is included in the identification information, and the content from the external device when it is determined that the unique information and the identification information do not match Acquisition of management information and the content information is prohibited.

The information recording method of the invention described in claim 8 is:
When communicating with the external device via the communication unit communicating with the external device, the content management information of the external device is acquired from the external device, and the acquired content management information and the content recorded in the recording unit A first determination step of determining whether or not the management information matches;
When it is determined in the first determination step that there is content management information that does not match, it is determined whether or not difference content information corresponding to the content management information that does not match is recorded in the recording unit A discrimination process;
When it is determined that the difference content information is not recorded in the recording unit by the second determination step, the difference content information is acquired from the external device via the communication unit, and the acquired difference content is acquired. A control step of recording information in the recording unit;
An information recording method including:

The information recording program of the invention described in claim 9 is
A recording unit for recording content information and content management information for managing the content information in a computer;
A communication unit that communicates with external devices,
When communicating with the external device via the communication unit, the content management information of the external device is acquired from the external device, the acquired content management information and the content management information recorded in the recording unit, A first discriminating unit for discriminating whether or not they match,
A second determining unit configured to determine whether difference content information corresponding to the mismatched content management information is recorded in the recording unit when the first determining unit determines that there is mismatched content management information; Discriminator,
When the second determination unit determines that the difference content information is not recorded in the recording unit, the difference content information is acquired from the external device via the communication unit, and the acquired difference content is acquired. A control unit for recording information in the recording unit;
Information recording program to function as.

According to the present invention, when a user owns a plurality of information recording devices, the content configuration is the same in any device, and convenience for the user can be achieved.

  Embodiments according to the present invention will be described below in detail with reference to the accompanying drawings. However, the scope of the invention is not limited to the illustrated examples.

First, the apparatus configuration of the information recording apparatus 1 will be described with reference to FIG. The information recording device 1 is a portable audio device that acquires and records content information from the external device 2. The external device 2 is a stationary audio device.
The information recording apparatus 1 includes a control unit, a first determination unit, a system microcomputer 11 as a second determination unit, a display unit 12, an operation unit 13, a DSP (Digital Signal Processor) 14, and a recording unit. An HDD (Hard Disc Drive) 15, a DAC (Digital Analog Converter) 16, an amplifier unit 17, an output unit 18, and an I / F (interface) unit 19 as a communication unit are configured.

The system microcomputer 11 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), and a RAM (Random Access Memory) (not shown).

  The CPU centrally controls each unit. The ROM is a memory from which information can be read, and particularly stores a differential content information acquisition program. The RAM is a volatile memory for storing and has a work area for developing various programs and various data.

  The system microcomputer 11 reads a program specified in the system program and various application programs stored in the ROM and data stored in the RAM, expands the data in the RAM, the program and data expanded in the RAM, and the CPU. Various processes are executed in cooperation with.

The system microcomputer 11 acquires content management information of the external device 2 from the external device 2 when communicating with the external device 2 via the I / F unit 19 in cooperation with the differential content information acquisition program. When the content information included in the external device 2 is acquired, the system microcomputer 11 determines whether or not the acquired content management information matches the content management information recorded in the HDD 15. When it is determined that there is content management information that does not match, the system microcomputer 11 determines whether or not differential content information associated with the content management information that does not match is recorded in the HDD 15. If it is determined that the difference content information is not recorded in the HDD 15, the system microcomputer 11 acquires the difference content information from the external device 2 via the I / F unit 19, and uses the acquired difference content information. The data is recorded on the HDD 15.
Here, the content management information refers to information for managing content information. The content management information includes, for example, folder attribute information, file name information, and copyright protection information. The folder attribute information, file name information, and copyright protection information will be described later. Content information refers to music information, video information, and the like. The difference content information associated with content information that does not match refers to content information associated with (associated with) content information that does not match.

  The display unit 12 is configured by an LCD (Liquid Crystal Display) or the like, and performs a required display operation during reproduction or recording of a CD or the like based on a display signal input from the system microcomputer 11. For example, the track number being played, the operation state (fast forward, fast reverse, recording, etc.), the recording mode, etc. are displayed.

  The operation unit 13 includes various input keys such as a play key, a stop key, and a search key, and outputs a press signal to the system microcomputer 11.

  The DSP 14 is a high-speed microprocessor. According to an instruction from the system microcomputer 11, music information such as a CD is compressed into MP3 (MPEG-1 Audio Layer-3) method or WMA (Windows Media (registered trademark) Audio). Various digital signal processing such as expansion processing, error correction coding processing, EFM (Eight to Fourteen Modulation) modulation processing, and the like are performed.

  The HDD 15 includes a magnetic storage medium, and stores (records) various information in the magnetic storage medium so as to be readable and writable.

  The DAC 16 converts a predetermined digital signal processed by the DSP 14 into an analog signal and outputs the analog signal to the amplifier unit 17. The amplifier unit 17 amplifies the analog signal output from the DAC 16. The output unit 18 outputs the analog signal output from the amplifier unit 17 as sound to external headphones or speakers.

  The I / F unit 19 is connected to the external device 2 through a cable or the like, and transmits / receives various information to / from the external device 2.

  Next, an example of information 15A recorded in the HDD 15 will be described with reference to FIG. As shown in FIG. 2, the information 15A includes an own device ID (Identifier Number) as unique information, a content information sharing permission ID as identification information, content management information, and content information.

  The own device ID is an ID unique to the device. The content information sharing permission ID is an ID of the information recording apparatus 1 and the external device 2 that is permitted to share content information by the function of the present invention. The content management information includes folder attribute information, file name information, and copyright protection information. The folder attribute information is information indicating the attribute of the folder in which the content information is stored. The file name information is information indicating the file name of the content information. The copyright protection information is information indicating whether or not the content information can be copied.

  Next, an example of content management information included in the information recording device 1 and the external device 2 immediately before the differential content information acquisition process described later is executed will be described with reference to FIG. FIG. 3A shows a content management information table 150A as an example of content management information recorded in the HDD 15 of the information recording apparatus 1. FIG. 3B shows a content management information table 150B as an example of content management information recorded in a recording unit (not shown) of the external device 2. Each piece of information in the content management information table 150A corresponds to the content management information described with reference to FIG.

  Next, an example of content management information included in the information recording device 1 and the external device 2 after the information recording device 1 is connected to the external device 2 and the differential content information acquisition process is executed will be described with reference to FIG. . When the information recording device 1 is connected to the external device 2, the information recording device 1 acquires content management information from the external device 2 and compares the content management information (that is, the content management table 150A and the content management table 150B). And comparison). Then, after the comparison, the content management information that does not match is updated or acquired, or the content information associated with the content management information that does not match is acquired.

For example, it is assumed that there is content management information that has the same file name information and folder attribute information that does not match by comparison between the content management table 150A and the content management table 150B (hereinafter, comparison). In this case, a method for updating the content management information will be described (corresponding to (1) in FIG. 4).
In FIG. 3, when “rrrrrr.mp3” of the content management tables 150A and 150B is compared, the file name information and the copyright protection information in each content management table are the same, but the folder attribute information is the same in the content management table 150A. Is “¥ AAA”, and “¥ AA” in the content management table 150B. That is, both contents management information is the same file name information, and folder attribute information is different. In this case, the folder attribute information “rrrrrr.mp3” of the content management table 150A is matched with the same folder attribute information as the folder attribute information of the external device 2. That is, as shown in FIG. 4, the folder attribute information of “rrrrrr.mp3” in the content management table 150A is adjusted from “¥ AAA” to “¥ AA” and updated.

Next, a method of updating the copyright protection information included in the content management information when there is content management information that has the same file name information and does not match the copyright protection information by comparison (FIG. 4). Corresponds to (2)).
In FIG. 3, when comparing “abcdefg.mp3” in the content management table 150A and the content management table 150B, the file name information and the folder attribute information in each content management table are the same, but the copyright protection information is the content management information. “Yes” in the table 150A and “No” in the content management table 150B. In this state, for example, after content information downloaded and purchased by the user is recorded in the HDD 15, the user purchases a CD having the same content information, and the content information of the purchased CD is compressed and recorded in the external device 2. Is assumed. In this case, the information recording apparatus 1 acquires the content information “abcdefg.mp3” from the external device 2, and updates the content management table 150A as shown in FIG. By such an update, the content information can be recorded on a device (for example, an on-vehicle audio device) owned by a user other than the information recording device 1. Further, in this case, “abcdefg.mp3” recorded from the CD purchased by the user recorded in the external device 2 with respect to “abcdefg.mp3” protected in copyright in the information recording device 1. Since it will be overwritten, a message such as “Do you want to overwrite?” May be displayed on the display unit 12 so that the user can select it.

Next, a method for acquiring content management information when there is content management information that does not match by comparison will be described (corresponding to (3) in FIG. 4).
In FIG. 3, when compared with “www.mp3” of the content management tables 150A and 150B, although recorded in the external device 2, the corresponding content information is not recorded in the information recording device 1. The corresponding content management information is not recorded in the content management table 150A. In the content management table 150B, the copyright protection information of “www.mp3” is “Yes”. In this case, since the file “wwwwww.mp3” recorded in the external device 2 cannot be copied to other devices including the information recording device 1, the information recording device 1 receives content management information from the external device 2. Are acquired and recorded as dummy information in the content management table 150A. Dummy information refers to content that cannot be recorded in the content information (here, the information recording device 1) even though the user has the content (in this case, the external device 2). This information is recorded as temporary content information in order to match the information. For example, when the user instructs the information recording device 1 to reproduce the file having the file name information “www.mp3”, the content information “www.mp3” is not actually acquired by the information recording device 1 and is a dummy. Information is recorded. For this reason, the content information “www.mp3” cannot be reproduced by the information recording apparatus 1. In this case, the information recording apparatus 1 may display on the display unit 12 such as “It is owned content but can be played back only with *** (device name of the external device 2 etc.)”.

Next, a description will be given of the content management information when there is content management information that does not match by comparison, and a method for acquiring content information associated with the content management information (corresponding to (4) in FIG. 4).
In FIG. 3, when compared with “DDDDDD.mp3” in the content management tables 150A and 150B, the content information is recorded in the external device 2, but the corresponding content information is not recorded in the information recording device 1. In the content management table 150B, the copyright protection information of “DDDDD.mp3” is “none”. In this case, the information recording apparatus 1 obtains the content information “DDDDDD.mp3” from the external device 2 and updates the content management table 150A as shown in FIG.

Next, a case will be described where the file name information is the same by comparison and the content management information in one content management table is dummy information (corresponding to (5) in FIG. 4).
In FIG. 3, when compared with “kkkk.mp3” in the content management tables 150A and 150B, the content management information in the external device 2 is not dummy information, so the content information of “kkkk.mp3” is stored in the external device 2. Since the content management information in the information recording device 1 is dummy information, the information information “1” is not recorded in the information recording device 1. This state is the state of (3) above when the information recording apparatus 1 and the external device 2 were connected last time, after which the user purchased the same content with a CD or the like and recorded it on the external device 2.
In this case, the information recording apparatus 1 acquires the content information “kkkk.mp3” from the external device 2, and updates the content management table 150A as shown in FIG.

  Next, the difference content information acquisition process executed by the CPU 11 of the information recording apparatus 1 will be described with reference to FIGS. The difference content information acquisition process is a process for acquiring the difference content information from the external device 2 and recording it in the HDD 15.

  For example, the CPU 11 includes a differential content information acquisition program that is read from the ROM 12 and appropriately expanded in the RAM 13, triggered by a user input of an execution instruction for the differential content information acquisition process via the operation unit 13. The differential content information acquisition process is executed by the cooperation.

  First, it is determined whether or not the external device 2 is connected (step S11). For example, based on whether a connection signal is received from the external device 2, it is determined whether or not the connection signal is connected to the external device 2. When it is determined that the external device 2 is not connected (step S11; NO), the process proceeds to step S11. If it is determined that the external device 2 is connected (step S11; YES), it is determined whether or not the external device 2 has content management information (step S12). When it is determined that the external device 2 does not have content management information (step S12; NO), the differential content information acquisition process ends.

  If it is determined in step S12 that the external device 2 has content management information (step S12; YES), the external device ID is confirmed after the external device ID is received from the external device 2 (step S13). Here, the external device ID refers to a unique ID that the external device 2 has. The external device ID corresponds to unique information. If the external device ID is not confirmed (step S13; NO), the difference content information acquisition process ends. When the external device ID is confirmed (step S13; YES), it is determined whether or not the external device ID is registered (step S14). Specifically, it is confirmed whether or not the external device ID matches a plurality of content information sharing permission IDs (see FIG. 2) recorded in the HDD 15. When it is determined that the external device ID is not registered (step S14; NO), the difference content information acquisition process ends.

  When it is determined that the external device ID is registered in the HDD 15 (step S14; YES), content management information is acquired from the external device 2 (step S15). Then, the content management information acquired from the external device 2 is compared with the content management information recorded in the HDD 15 (step S16). Specifically, the content management information table 150A and the content management information table 150B described in FIG. 3 are compared.

  After execution of step S16, it is determined whether there is content management information that does not match (step S17). For example, in the example of the content management tables 150A and 150B in FIG. 3, the content management information other than “tttt.mp3”, “efghijk.mp3”, and “FFFFF.mp3” does not match. When it is determined that there is no content management information that does not match (step S17; NO), the difference content information acquisition process ends.

If it is determined in step S17 that there is content management information that does not match (step S17; YES), content management information that does not match is selected (step S18). For example, in the example of the content management tables 150A and 150B of FIG. 3, the content management information of “rrrrrr.mp3”, “abcdefg.mp3”, “wwwwww.mp3”, “DDDDDD.mp3”, and “kkkk.mp3” does not match. Selected as information.
After execution of step S18, it is determined whether or not the difference content information is content information not recorded in the own device (step S19). The content information that is not recorded on the own device refers to differential content information that is not recorded on the HDD 15 of the information recording apparatus 1. For example, “wwwwww.mp3”, “DDDDDD.mp3”, and “kkkk.mp3” in the content management table 150B correspond to content information that is not recorded in the own device.

  If it is determined in step S19 that the difference content information is not content information not recorded in the own device (step S19; NO), it is determined whether or not the folder attribute information is different (step S20). It is determined whether or not the folder attribute information is different because the folder attribute information included in the content management information acquired from the external device 2 is different from the folder attribute information included in the content management information of the own device. This means that it is determined whether or not the folder attribute information needs to be changed. This step corresponds to, for example, the case of FIG. If it is determined that the folder attribute information is different (step S20; YES), the folder attribute information is matched (step S21).

  If it is determined in step S20 that there is no need to change the folder attribute information (step S20; NO), the copyright protection information of the own device is “Yes” and the copyright protection information of the external device 2 is “No”. It is determined whether or not there is (step S22). If it is determined that the copyright protection information of the own device is “Yes” and the copyright protection information of the external device 2 is “No” (Step S22; YES), the process proceeds to Step S26 described later. This step corresponds to the case of FIG. When it is determined that the copyright protection information of the own device is “Yes” and the copyright protection information of the external device 2 is not “None” (step S22; NO), the copyright of the external device 2 corresponding to the dummy information of the own device It is determined whether or not the right protection information has been updated (step S23). Here, the copyright protection information of the external device 2 corresponding to the dummy information is, for example, the work of the content management table 150B “kkkk.mp3” corresponding to the dummy information of the content management table 150A “kkkk.mp3” of FIG. It means rights protection information. This step corresponds to the case of FIG.

  If it is determined in step S23 that the copyright protection information of the external device 2 corresponding to the dummy information has been updated (step S23; YES), the process proceeds to step S26 described later. If it is determined that the copyright protection information of the external device 2 corresponding to the dummy information has not been updated (step S23; NO), the process proceeds to step S27 described later.

  If it is determined in step S19 that the difference content information is content information not recorded in the own device (step S19; YES), it is determined whether the difference content information has copyright protection (step S24). . Whether or not the differential content information has copyright protection refers to whether or not the differential content information has copyright protection by referring to the copyright protection information included in the content management information acquired from the external device 2. Say.

  If it is determined in step S24 that the difference content information is not copyright protected (step S24; NO), the difference content information is acquired (step S26). This step corresponds to, for example, the case of FIG. Further, when this step is reached through step S24; YES, this corresponds to the case of (5) in FIG. Further, when step S22: YES is reached and this step is reached, it corresponds to the case of (2) in FIG. 4, and when step S23: YES is reached and this step is reached, it corresponds to the case of (3) in FIG. To do.

  After execution of step S26, it is determined whether there is still content management information that does not match (step S27). If it is determined that there is still content management information that does not match (step S27; YES), the process proceeds to step S18. If it is determined that there is no mismatched content management information (step S27; NO), the content management information is recorded or updated in the HDD 15 (step S28), and the differential content information acquisition process ends.

  In step S24, if it is determined that the differential content information has copyright protection (step S24; YES), dummy information corresponding to the differential content information is recorded as content management information (step S25). This step corresponds to, for example, the case of FIG. After execution of step S25, the process proceeds to step S27.

  As described above, according to the present embodiment, when it is determined that the difference content information is not recorded in the HDD 15, the difference content information is acquired from the external device 2, and the acquired difference content information is recorded in the HDD 15. Accordingly, when the user acquires content information from the external device 2, the user can eliminate the trouble of specifying the content information to be acquired. For example, the user owns a plurality of information recording devices 1. In this case, it is possible to achieve the convenience of the user by making the content configuration the same in any device.

  If it is determined that the difference content information is not recorded in the HDD 15, the content management information acquired from the external device 2 can be recorded in the HDD 15.

  Further, the folder attribute information of the content management information recorded on the HDD 15 can be matched with the folder attribute information acquired from the external device 2. As a result, the folder attribute information recorded in the HDD 15 and the folder attribute information of the external device 2 are in the same hierarchy, so that it is possible to prevent the user from being confused about the selection of content information.

  Also, the copyright-protected differential content information is not acquired, but dummy information is acquired instead. As a result, the user can eliminate the trouble of specifying the differential content information that is copyright-protected. It is also possible to obtain legal content information.

  Further, the content management information with the external device 2 is compared based on the determination result of whether or not the external device ID and the content information sharing permission ID match. As a result, when it is determined that the external device ID and the content information sharing permission ID do not match, the external device 2 is prohibited from sharing the content information by the function of the present invention, so that the diffusion of the content information can be prevented. .

  In addition, when it is determined that the plurality of content information sharing permission IDs recorded in the HDD 15 and the external device ID do not match, sharing of content information by the function of the present invention with the external device 2 having the external device ID is prohibited. To do. Thereby, diffusion of content information can be prevented.

The description in the above embodiment is an example of the information recording apparatus, the information recording method, and the information recording program according to the present invention, and the present invention is not limited to this.

  For example, in the above embodiment, if the copyright protection information is “Yes” (step S24; YES) in step S24 in the difference content information acquisition process, the dummy information is recorded in the HDD 18 as content management information. It is not limited to this. For example, information indicating that the information could not be acquired without adding dummy information may be added to the content management information. In addition, information indicating that the information could not be acquired may be displayed on the display unit 12. For example, information such as “This content information cannot be reproduced but is stored in the device” may be displayed.

  In step S24 in the differential content information acquisition process, whether or not there is copyright protection is determined by referring to the copyright protection information included in the content management information, but is not limited thereto. is not. For example, the difference content information may be acquired and the copyright protection information recorded in the frame header of the acquired content information may be referred to.

  If there is content information to be deleted from the information recording device 1 and the external device 2, the content information to be deleted may be stored in a deletion folder in the information recording device 1 or the external device 2. For example, when a deletion folder is set in one folder in the HDD 15 of the information recording apparatus 1, the file in the deletion folder is deleted only by connecting the information recording apparatus 1 to the external device 2. Thereby, the user can eliminate the trouble of deleting the content information to be deleted.

  In addition, the detailed configuration and detailed operation of the information recording apparatus 1 in the above embodiment can be changed as appropriate without departing from the spirit of the present invention.

It is a block diagram of the information recording device which concerns on this invention. It is the figure which showed an example of the information recorded on HDD. (A) is the figure which showed an example of the content management information recorded on HDD of the information recording device 1 before a difference content information acquisition process is performed. (B) is a figure showing an example of content management information that external device 2 has before the differential content information acquisition process is executed. (A) is the figure which showed an example of the content management information recorded on HDD of an information recording device before a difference content information acquisition process is performed. (B) is a diagram showing an example of content management information that the external device 2 has after the differential content information acquisition process is executed. It is a flowchart which shows a difference content information acquisition process. It is a flowchart which shows a difference content information acquisition process.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Information recording apparatus 2 External apparatus 11 System microcomputer 12 Display part 13 Operation part 14 DSP
15 HDD
16 DAC
17 Amplifier section 18 Output section 19 I / F section

Claims (9)

A recording unit for recording content information and content management information for managing the content information;
A communication unit that communicates with an external device;
When communicating with the external device via the communication unit, the content management information of the external device is acquired from the external device, the acquired content management information and the content management information recorded in the recording unit, A first determination unit for determining whether or not match,
When it is determined by the first determination unit that there is content management information that does not match, it is determined whether or not difference content information associated with the content management information that does not match is recorded in the recording unit. Two discriminators;
When the second determination unit determines that the difference content information is not recorded in the recording unit, the difference content information is acquired from the external device via the communication unit, and the acquired difference content is acquired. A control unit for recording information in the recording unit;
An information recording apparatus comprising: The controller is
When the second determination unit determines that the difference content information is not recorded in the recording unit, the difference content information is referred to by referring to copyright protection information included in the content management information acquired from the external device. 2. Determines whether or not there is copyright protection, and if it is determined that the differential content information has copyright protection, dummy information corresponding to the differential content information is recorded in the recording unit. Information recording device. The controller is
When the second determination unit determines that the difference content information is recorded in the recording unit, the copyright protection information included in the content management information recorded in the recording unit and the external device are acquired. With reference to content management information, it is determined whether each of the differential content information has copyright protection, the differential content information recorded in the recording unit is determined to have copyright protection, and the external device The differential content information recorded on the external device is overwritten and recorded on the differential content information recorded on the recording unit when it is determined that the differential content information recorded on the external device has no copyright protection. The information recording device described. The controller is
If the second determination unit determines that the difference content information is recorded in the recording unit, the determination as to whether the difference content information recorded in the recording unit is dummy information; and With reference to copyright protection information included in the content management information acquired from the external device, it is determined whether the differential content information has copyright protection, and the differential content information recorded in the recording unit is dummy information. If the differential content information recorded in the external device is determined not to have copyright protection, the differential content information recorded in the external device is stored in the differential content information already obtained in the recording unit. The information recording apparatus according to claim 1, wherein the dummy information is overwritten and recorded. The controller is
When it is determined by the second determination unit that the difference content information is recorded in the recording unit, the difference content information is referred to by referring to folder attribute information included in the content management information acquired from the external device. It is determined whether or not the folder attribute information needs to be changed. When it is determined that the folder attribute information of the difference content information needs to be changed, the folder attribute information of the difference content information is acquired from the external device. The information recording apparatus according to claim 1, wherein the information recording apparatus matches the folder attribute information. The controller is
The information recording apparatus according to claim 1, wherein content management information corresponding to the difference content information recorded in the recording unit is added or rewritten. The recording unit is
Recording identification information for identifying an external device permitted to share the content information;
The controller is
The unique information of the external device is acquired from the external device via the communication unit, and it is determined whether the acquired unique information is included in the identification information recorded in the recording unit. The content management information is acquired from the external device when it is determined that it is included in the identification information, and the content from the external device when it is determined that the unique information and the identification information do not match The information recording apparatus according to claim 1, wherein acquisition of management information and the content information is prohibited. When communicating with the external device via the communication unit communicating with the external device, the content management information of the external device is acquired from the external device, and the acquired content management information and the content recorded in the recording unit A first determination step of determining whether or not the management information matches;
When it is determined in the first determination step that there is content management information that does not match, it is determined whether or not difference content information corresponding to the content management information that does not match is recorded in the recording unit A discrimination process;
When it is determined that the difference content information is not recorded in the recording unit by the second determination step, the difference content information is acquired from the external device via the communication unit, and the acquired difference content is acquired. A control step of recording information in the recording unit;
An information recording method including: A recording unit for recording content information and content management information for managing the content information in a computer;
A communication unit that communicates with external devices,
When communicating with the external device via the communication unit, the content management information of the external device is acquired from the external device, the acquired content management information and the content management information recorded in the recording unit, A first discriminating unit for discriminating whether or not they match,
A second determining unit configured to determine whether difference content information corresponding to the mismatched content management information is recorded in the recording unit when the first determining unit determines that there is mismatched content management information; Discriminator,
When the second determination unit determines that the difference content information is not recorded in the recording unit, the difference content information is acquired from the external device via the communication unit, and the acquired difference content is acquired. A control unit for recording information in the recording unit;
Information recording program to function as.

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