JP2006113639A - Contents storage device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device capable of storing contents and creating retrieval information regarding the contents, of efficiently performing retrieval and of outputting appropriate intermediate results. <P>SOLUTION: This device has a first storage region for storing the data acquired at a data acquisition section, a second storage region, a storage processing section for reading the data stored in the first storage region and writing the data into the second storage region, a third storage region, and a data analyzing section for reading the data stored in the first storage region, analyzing the data and outputting the analysis result in the third storage region and performs analysis of the contents in parallel with the accumulation of the acquired contents. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a search for content stored in a recording medium.

  In recent years, with the advent of digital video recorders with a hard disk as a recording medium, it has become possible to view a program in which a large number of broadcast programs are automatically reserved and recorded on the hard disk, and the user can watch a favorite program later. Since the hard disk has a capacity of several hundred GB and an enormous amount of AV content can be stored, it is necessary to efficiently search the content to be viewed from the AV content. In view of this, there has been considered a method of extracting characteristic information from moving image analysis information, voice, sound information, text, etc. of the content for use in content search (see, for example, Patent Document 1).

  In addition, in order to protect the copyright of the content recorded on the hard disk or the like, it is necessary to prevent unauthorized use of the content stored in the content storage device. There has been a method of controlling (see, for example, Patent Document 2).

In addition, there is a method of recording a relation between information extracted from the content and position information in the content and using it for searching in the content. For example, at the time of recording a broadcast program, it is recorded as index information when audio information peculiar to the content is detected (see, for example, Patent Document 3).
JP 2000-250944 A JP 2001-160003 A Japanese Patent Laid-Open No. 2002-133837

  However, in the configuration described in Patent Document 1, since the moving image analysis / audio / acoustic information analysis is performed on the content stored in the database, the content storage device can search for the content being downloaded at the same time as downloading the content. I had a problem that I couldn't.

  In the configuration described in Patent Document 3, a video / audio signal is input from an input unit, and voice recognition is performed based on the signal. The video / audio signal is AD-converted, and MPEG2 (Moving Picture Experts Group) It is encoded and recorded in phase 2). For this reason, there is a problem that search information cannot be generated while the copyright-protected encrypted content is downloaded to the content storage device. Further, in the configuration described in Patent Document 3, when a search is started at the same time as recording with respect to a file obtained by encrypting a file in which a plurality of contents are combined into one together with the content control data, a search result output at any time is a content. There is a problem that it is not possible to output to the user by distinguishing whether the result of searching a part of the content or the result of searching the entire content.

  The present invention solves the above-described conventional problems, and generates, retrieves, and retrieves search information for content that is combined for storage or content that has been encrypted to protect the content. It is an object of the present invention to provide an apparatus capable of displaying an intermediate result output with a higher time efficiency than in the prior art and capable of performing appropriate display.

  In order to solve the conventional problems, a content storage device of the present invention includes a data acquisition unit, a first storage area that stores data acquired by the data acquisition unit, a second storage area, and a first storage Reads data stored in the area, writes data to the second storage area, reads the data stored in the storage area, the third storage area, and the first storage area, analyzes the data, and analyzes A data analysis unit that outputs the result to the third storage area, and analyzes the content in parallel with the accumulation of the acquired content.

  With this configuration, it is possible to decrypt and analyze the content at the same time as storing the acquired encrypted content, and simultaneously perform a search using the analysis information on the content and output the search completion information and the search intermediate result be able to.

  According to the present invention, search information for content included in data is generated during the storage of data that is a collection of a plurality of contents for storage or data that has been encrypted to protect the contents. As a result, the time from the start of content acquisition to the completion of search information generation can be shortened compared to a method of generating search information after storage. Furthermore, it is possible to search for contents in the data being stored using the analysis-in-progress results and output the results. Further, at the time of outputting the search result, it is possible to output the distinction and the search progress of whether the search is retrieved from data being accumulated or retrieved from data that has been accumulated.

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

(Embodiment 1)
FIG. 1 shows the overall configuration of a server-type broadcast content storage apparatus using a content distribution server and a content storage apparatus in Embodiment 1 of the present invention. One or a plurality of content distribution servers 102 and one or a plurality of content storage devices 103 are respectively connected to the Internet 101, and the content storage device 103 is connected to a user from any of the content distribution servers 102 via 101. It is possible to receive data including specified content. The technique for acquiring data from the server via the Internet is well known and will not be described in detail.

  FIG. 2 shows the overall configuration of the content storage apparatus according to Embodiment 1 of the present invention. In FIG. 2, the content storage device transmits a request for acquiring a content file existing on the server via the Internet 101. The receiving unit 201 obtains encrypted content data transmitted from the server via the Internet 101. The buffer usage state 202 and the download buffer 203 correspond to each other on a one-to-one basis, and the buffer usage state 202 indicates the usage state of the paired download buffer 203. For example, the buffer usage status 1 and the download buffer 1 are paired, and the buffer usage status 1 represents the usage status of the download buffer 1. Note that the set of the buffer usage state 202 and the download buffer 203 may be one set or a plurality of sets.

  The receiving unit 201 reads the buffer usage state 202 and checks the value to determine whether the paired download buffer 203 is in use by the accumulation processing unit 204 or the decoding unit 212. When either the storage processing unit 204 or the decoding unit 212 is in use, the other buffer usage state 202 is similarly confirmed. When all the existing buffer usage states 202 are in use, the receiving unit 201 enters a write standby state. When there is a buffer usage state 202 that is not in use, the receiving unit 201 writes the received data to the download buffer 203 and sets the value of the buffer usage state 202 that is paired with the written buffer to the “accumulation processing unit 204. And the decoding unit 212 changes the value to the value indicating the state of “using the download buffer 203”.

  The buffer usage state 202 takes at least three values. One of the values is a value corresponding to a state in which both the storage processing unit 204 and the decoding unit 212 are using the download buffer 203 paired with the buffer usage state 202. Another one of the values is a value corresponding to a state in which only one of the accumulation processing unit 204 or the decoding unit 212 is using the download buffer 203 corresponding to the buffer usage state 202. Another one of the values is a value corresponding to a state in which neither the accumulation processing unit 204 nor the decoding unit 212 uses the download buffer 203 that is paired with the buffer usage state 202.

  Note that, as the value of the buffer usage state 202, 1 bit corresponds to whether or not the storage processing unit 204 uses the download buffer 203, and another 1 bit corresponds to whether or not the decoding unit 212 uses the download buffer 203 You may make it correspond.

  The above-mentioned variations include those in which the above three values are changed to N more redundant values as the values of the buffer usage state 202, and those in which the above 1 bit is changed to more redundant N bits. It is clear that

  Note that the buffer usage state 202 may be recorded in a part of a usable storage area in the content storage device, or in an external storage area accessible by the content storage device. May be.

  The buffer usage state 202 may be recorded by using a part of the memory area of the download buffer 203 to be paired.

  The accumulation processing unit 204 reads data from the download buffer 203. In order to be able to identify the acquired content file, as shown in FIG. 7, in the directory whose name is the domain name + path name in the URI of the content file acquired in the file system on the permanent storage area 205, Write as a file name with the file name in the URI as the name. When the directory or file does not exist, the accumulation processing unit 204 newly creates the directory or file in the permanent storage area 205. If the file exists, the accumulation processing unit 204 performs additional writing to the file.

  After reading the data in the download buffer 203, the accumulation processing unit 204 changes the value of the paired buffer usage state 202 to a value representing the “storage processing unit 204 does not use the download buffer 203” state.

  In parallel with the processing of the storage processing unit 204, the decryption unit 212 reads the data in the download buffer 203 and decrypts the content file using the key acquired from the DRM client 211.

  The decrypted file is a content file 600 in which a header 601 is added to each of a plurality of contents 602 as shown in FIG. 6A, and the decrypted file is as shown in FIG. 6B. In some cases, the content is a single content 610. Hereinafter, a case where the decrypted file is shown in FIG. 6A will be described.

  Header information that can identify the type of content exists at the beginning of the decrypted data. The content content determination unit 214 determines the type of content using the header information, and determines the component to process the buffer according to the type. For example, in FIG. 2, the content content determination unit 214 identifies the type of content stored in the buffer 1, selects a search attribute generation unit A corresponding to the content type of the buffer 1, and the search attribute generation unit A Specifies to interpret the contents of buffer 1.

  The decryption unit 212 writes the decrypted content in one of the buffers 213. If the header information exists, the type of the header information is determined, and writing to a buffer different from the buffer already used is performed. When there is only one buffer indicated by 213, writing may be performed after all the data in the buffer is read.

  After reading the data in the download buffer 203, the decryption unit 212 changes the paired buffer usage state 202 to indicate a state that “the decryption unit 212 does not use the download buffer 203”.

  The search attribute generation unit 215 analyzes the contents of the buffer 213 and writes output data serving as a search attribute in the tamper resistant storage area 224. At this time, as shown in FIG. 8, the index data of the content related to the content written in the tamper resistant storage area 224 is simultaneously recorded. For example, when the content is audio information and the search attribute generation unit 215 has an audio analysis function, the search attribute generation unit 215 outputs text information of the audio analysis result. At this time, the index data may be a difference between the text information of the voice analysis result and a position serving as a source of the voice analysis result from a predetermined position of the content. The unit of the index may be the amount of content information such as bits and bytes, or may be a time such as seconds. When the unit of the index is time, the playback time in the content may be acquired using PTS (Presentation Time Stamp) described in the video or audio packet. In addition, in order to match the content stored by other content storage devices with the search attribute, the start position of the content calculated using the electronic program guide (EPG) is used as the related information of the search attribute information. It may be included as a position. For example, the PTS of a packet sent immediately after the program start time in the electronic program guide may be recorded as the predetermined position. Further, as the predetermined position, a value sent from the server as the first PTS value of the content may be used.

  The search attribute generation unit 215 acquires the type of data recorded in the buffer 214 from the content content determination unit 214 and performs processing corresponding to the mono media. For example, if the content is voice information, voice recognition is performed and the content is written in the tamper resistant storage area 224. Devices required for speech recognition are well known and will not be described in detail because they themselves do not form part of the present invention.

  The search attribute generation unit 215 performs write notification to the decryption unit after processing a predetermined time or a predetermined number of bytes. The write notification includes the number of processed bytes.

  The decryption unit 212 receives the write notification, compares it with the total number of bytes of the content, and calculates how much the processing of the search attribute generation unit is completed by the following formula.

(Total amount of processed content) / (Total amount of content)
The decryption unit 212 records the calculation result as the additional information recording state 221. FIG. 9 shows a flowchart of the additional information recording state writing process.

  Note that instead of the total number of processed bytes, the time in the content may be acquired and divided by the total time of the content. When the content format is MPEG2, the PTS described in the video or audio packet may be used as a counter when acquiring the time in the content.

  Any one of the quantities representing the length of the entire content such as the total number of bytes of the content and the total time of the content is acquired before acquiring the entire content data. The method of acquiring any of the quantities representing the length of the entire content is, for example, a method of acquiring by requesting the server, a method of acquiring from the information accompanying the content, a method of acquiring from the license information of the content, or adding to DII Although the method etc. which acquire the information stored in the descriptor to perform are mentioned, you may use the other method.

  Note that the additional information recording state 221 may exist inside each component. In addition, a value recorded in the additional information recording state 221 may be calculated by a component other than the decoding unit 212. For example, even if the UI unit acquires the processed content amount and the total content amount from the decryption unit, and the UI unit records the result calculated using the above calculation formula in the additional information recording state existing in the UI unit good.

  The search unit 222 is activated in accordance with a user instruction, and searches for content instructed by the user recorded in the tamper resistant storage area 224.

  The window 900 of FIG. 11 is created by the user interface unit 223 and displayed on the display device. The components necessary to display the window are well known and will not be described in detail because they do not themselves form part of the present invention.

  In FIG. 11, the user selects and clicks a button 901 of a window 900 displayed on the display with a pointing device such as a mouse or a remote controller. The UI unit outputs a sub-window in which the user can select whether to search from all of the content groups stored in the content storage device or from a part of the content groups. When the user selects a search from a part of the content group, the UI unit further displays a window in which a plurality of contents can be selected. The user uses the subwindow to determine the content to be searched. The determined content is displayed in the display area 902.

  After determining the search target, the user designates a character string to be searched in 903 and clicks a search start button 904.

  The user interface unit 223 uses a click of the search button 904 in FIG. 3 as a trigger, and passes a specified content or a list of content groups and a character string specified in 903. The search unit 222 receives the content or content group designation and the search target character string from the user interface unit 223, and searches the content or content group.

  The search unit 222 checks the additional information recording state 221 when outputting the search result. When the additional information recording state 221 indicates a recording state, a search result for a part of the mono-media is output. When the additional information recording state 221 indicates a recording completion state, the search result is output as a result of searching all the stored mono media. FIG. 10 shows a flowchart of search processing performed by the search unit.

  The additional information recording state 221 may be recorded in a part of a usable storage area in the content storage device, or may be recorded in an external storage area accessible by the content storage device. May be. The accuracy of the additional information recording state 221 is arbitrary, and may be stored in the storage area as the flag by taking information indicating one of at least two states.

  The search unit 222 outputs the target content and information associated with the content as a search result. Note that the value of the additional information recording state 221 may be output as a search result. Further, a pointer for referring to the additional information recording state 221 may be output.

  Note that the user interface unit 223 may determine the search result based on information from the search unit 222, or as shown in the dotted line from the additional information recording state 221 to the user interface unit in FIG. The search result may be determined with reference to 221.

  When the search unit 222 outputs a search result targeting a part of the monomedia, the user interface unit 223 displays a text 911 indicating that the search is currently being performed, as shown in FIG. Further, the search result display unit 905 displays the search result. Further, as indicated by 912, the value of the additional information recording state 221 is multiplied by a predetermined numerical value and displayed as a value indicating the search status.

  If the search unit 222 outputs a search result as a result of searching for all the stored mono media, the user interface unit 223 indicates to the user that the search is now complete, as shown in FIG. 931 is displayed. Further, the search result display unit 905 refers to the search result and the searched time or the location on the content, and displays a button for reproducing the corresponding portion of the content.

  The configuration of the windows in FIGS. 11 to 13 is an example, and the shape, arrangement, and size of objects such as text, buttons, and text input frames displayed on the windows may be different, and some of them are omitted. Also good. Further, the sub window may be omitted. The text content may be different. Further, the objects may be distributed and arranged in a plurality of windows.

  Note that a method other than the windows shown in FIGS. 11 to 13 may be used to indicate whether the search is being performed or the search has been completed. As an object other than a window, for example, a method of interlocking a blinking state of an LED (Light Emitting Diode) added to a content storage device with the searching / completed search state is an example using an object other than a window. Further, a method of multiplying the value of the additional information recording state 221 by a predetermined numerical value and controlling the blinking state of the plurality of LEDs according to the numerical value is another example using an object other than the window. Further, the method of producing a sound when the additional information recording state 221 exceeds a predetermined value is another example using an object other than a window.

  In this embodiment and FIG. 7, it is assumed that the file name with the file name in the URI is written in the directory with the domain name + path name as the name, but the content storage device identifies the content. If possible, it may be written with another directory name or path name. Moreover, it is not necessary to create a directory.

  In the present embodiment, when content that has not been encrypted is acquired, the decryption unit 212 may not decrypt the content.

(Embodiment 2)
FIG. 3 is a configuration diagram of Embodiment 2 of the present invention. 3, the same components as those in FIG. 2 are denoted by the same reference numerals, and description thereof is omitted.

  In FIG. 3, the separation unit 219 reads the data in the download buffer 203, and adds a header 601 to each of the plurality of contents 602 as shown in FIG. 6A, or a content file 600 shown in FIG. 6B. A single content 610 is output to the buffer 213 as shown in FIG.

  The tamper resistant storage area 224 in FIG. 2 is replaced with the storage area 229 in FIG. 3 in the second embodiment of the present invention. The storage area 229 may not be tamper resistant.

  According to such a configuration, when handling unencrypted content, the DRM client 211 and the decryption unit 212 are omitted compared to the first embodiment, so that the accumulation process is performed faster than the first embodiment. Can be operated.

  (Omitted Hereinafter, it is the same as the description method of Embodiment 1).

(Embodiment 3)
FIG. 4 is a configuration diagram of Embodiment 3 of the present invention. 4, the same components as those in FIG. 3 are denoted by the same reference numerals, and description thereof is omitted.

  In FIG. 4, the separation unit 219 writes the acquired data into the accumulation buffer 209. In parallel with this, the separating unit 219 is a single content file 600 in which a header 601 is added to each of the plurality of contents 602 as shown in FIG. 6A or combined as shown in FIG. 6B. Are output to the buffer 213.

  According to such a configuration, when either the accumulation process or the search attribute generation process is slower than the other process, the input data is supplied at a speed suitable for the high-speed process. Thus, by buffering input data that cannot be processed, either storage or search attribute generation can be performed at a higher speed than in the first and second embodiments.

  Note that in this embodiment, the separation unit 219 may include a decryption function so that encrypted content can be used. In this case, the acquired data is written into the accumulation buffer 209, and the decoded data is written into the buffer 213.

  (Omitted Hereinafter, it is the same as the description method of Embodiment 1).

(Embodiment 4)
FIG. 5 is a configuration diagram of Embodiment 4 of the present invention. 4, the same components as those in FIG. 2 are denoted by the same reference numerals, and the description thereof is omitted.

  The receiving unit 201 writes the received data at the position indicated by the write pointer 231 on the ring buffer 234. However, writing beyond the position indicated by either the read pointer A232 or the read pointer B233 is not performed. After writing, the write pointer 231 is changed to indicate the write end position.

  The decoding unit 212 reads data on the ring buffer from the position indicated by the read pointer A232. However, reading beyond the write pointer 231 is not performed. After reading, the read pointer A232 is changed to indicate the end position where the reading is completed.

  The accumulation processing unit 204 uses the read pointer B233 to perform reading in the same manner as the decoding unit 212.

  In this embodiment, instead of the ring buffer 234, a ring buffer management that manages a write process to the ring buffer, one or more write pointers, a read process from the ring buffer, and a plurality of read pointers. The receiving unit 201, the decoding unit 212, and the accumulation processing unit 204 may access the ring buffer via the ring buffer management unit.

  (Omitted Hereinafter, it is the same as the description method of Embodiment 1).

(Other embodiments)
In the above embodiment, the content storage device acquires the content file via the Internet, but via a communication channel such as broadcasting by a broadcast wave such as BS / CS / terrestrial wave, CATV, intranet, local area network, etc. Content may be acquired. For example, when using BS (Broadcasting Satellite), CS (Communication Satellite), or digital terrestrial broadcasting, a content file is transmitted as a module transmitted by a data carousel in DSM-CC (Digital Storage Media Command and Control). You may acquire what was received and stored in the descriptor which attaches data, such as a file name used when accumulating contents, to DII (Download Info Indication). The content file may be a stream such as MPEG2-TS.

  Further, IP multicast may be used as a technique used for transmission / reception of content files. IP multicast is a technique for copying a packet by a device in the network and distributing it to a plurality of devices. Further, the content may be acquired by combining a plurality of types of the communication paths. For example, a request for acquiring a content file may be transmitted to the server via the Internet, and the content file may be acquired from CS broadcasting.

  In the above embodiment, the server and the content storage device communicate bidirectionally, but the server unilaterally sends the content and data such as a file name to be added to the content to the content storage device via broadcasting. May be.

  In the content storage apparatus of FIG. 2, in order to search for a plurality of types of monomedia, a search attribute generation unit that handles each monomedia is configured. When the purpose is to search for a single type of mono-media, a plurality of types of search attribute generation units may not exist. Further, when there is only one type of search attribute generation unit, the content content determination unit can be omitted.

  In the first to fourth embodiments, four patterns of received data usage are shown. However, if the data can be analyzed in parallel or in a time-sharing manner, the buffer is used. The state, the download buffer, the decoding unit, the separation unit, each element of the DRM client, and the connection between each element and other elements may take other forms.

  In the above embodiment, the content file is stored in the permanent storage area, but may be stored in a storage area using a DRAM or the like for temporary storage.

  Although it is assumed that the search attribute generation unit in the above embodiment includes a voice recognition function, the search attribute generation unit includes a function other than the voice recognition function if position information in the content and information on the content are combined. But it ’s okay. For example, the search attribute generation unit may include any of a voice analysis function, an image recognition function, an image analysis function, a caption information acquisition function, a telop analysis function, and a metadata acquisition function.

  The search attribute generation unit in the above embodiment links position information in the content and information related to the content. The information related to the content includes information necessary for reproducing the content such as the bit rate and content size of the content, etc. In the case of information related to the entire content, it is not necessary to store it in association with position information within the content.

  In the above embodiment, an arbitrary character string is assumed as a search target input in 902. However, metadata, a character string such as a part of a URI or URI, a binary data such as a numerical value, a binary number, and a hexadecimal number, a voice Information, image information, a part of image information, or the like may be used. Since these data comparison methods are known, they will not be described in detail.

  In the above embodiment, the content storage device is a portable electronic device such as a mobile phone, a home AV device such as an optical disc player, a peripheral device of a home AV device such as a remote controller, a home game machine, a personal computer such as a personal computer or a printer. It may be mounted as a part of household appliances such as peripheral devices and microwave ovens.

  In the above embodiment, each component is arranged in the content storage device. However, a part of the component may be arranged outside the content storage device and connected to the content storage device via a network.

  In the above embodiment, the access from the component to the component may be performed via the operating system.

  In the above embodiment, the constituent elements are divided for each function group. However, these plural constituent elements may be combined into one constituent element having a function in which the functions of the respective constituent elements are combined. For example, although the user interface unit 223 and the search unit 222 are shown as separate components, the user interface unit 223 and the search unit 222 exist as one component having a function of the user interface unit and a function of the search unit. Also good.

  Note that the communication path includes not only a wired connection but also a wireless connection. “Acquire via a communication path” includes not only one-to-one communication but also one-to-many broadcast / IP multicast.

  The content includes video information such as MPEG2 and MPEG4, audio information such as AAC (Advanced Audio Coding), structural description type language description data such as Hyper Text Markup Language (HTML) and BML (Broadcast Markup Language), and JPEG (Joint Photogram). Image information such as Experts Group), PNG (Portable Network Graphics), script such as Ecscript, metadata, and the like may be used.

  Each of the above-described embodiments is realized by interpreting and executing predetermined program data stored in a storage device (ROM, RAM, hard disk, etc.) that can execute the above-described processing procedure. In this case, the program data may be introduced into the storage device via the recording medium, or may be directly executed from the recording medium. The recording medium refers to a recording medium such as a semiconductor memory such as a ROM, a RAM, or a flash memory, a magnetic disk memory such as a flexible disk or a hard disk, an optical disk such as a CD-ROM, DVD, or BD, or a memory card. The recording medium is a concept including a communication medium such as a telephone line or a conveyance path.

  Each functional block such as a decryption unit, a storage processing unit, and a content attribute generation unit may be typically realized as an LSI that is an integrated circuit. These may be individually made into one chip, or may be made into one chip so as to include a part or all of them.

  The name used here is LSI, but it may also be called IC, system LSI, super LSI, or ultra LSI depending on the degree of integration.

  Further, the method of circuit integration is not limited to LSI, and implementation with a dedicated circuit or a general-purpose processor is also possible. An FPGA (Field Programmable Gate Array) that can be programmed after manufacturing the LSI, or a reconfigurable processor that can reconfigure the connection and setting of circuit cells inside the LSI may be used.

  Further, if integrated circuit technology comes out to replace LSI's as a result of the advancement of semiconductor technology or a derivative other technology, it is naturally also possible to carry out function block integration using this technology. Biotechnology can be applied.

  The content storage apparatus according to the present invention has a function of performing a suitable search during content storage, and is useful as a function of home AV equipment such as a television, a home server, and a media recorder. It can also be applied as functions of portable electronic devices, peripheral devices for home AV devices, home game machines, personal computers, personal computer peripheral devices, home appliances, and the like.

The figure which shows the example of arrangement | positioning of the content server and content storage apparatus in embodiment of this invention Configuration diagram of content storage apparatus according to Embodiment 1 of the present invention Configuration diagram of content storage apparatus according to Embodiment 2 of the present invention Configuration diagram of content storage apparatus according to Embodiment 3 of the present invention Configuration diagram of content storage apparatus according to Embodiment 4 of the present invention The figure which shows the format example of the data handled in embodiment of this invention The figure which shows the example of file arrangement | positioning in the permanent storage area in embodiment of this invention The figure which shows the example of the search attribute in embodiment of this invention Flowchart of additional information recording state update processing in Embodiment 1 of the present invention Flowchart of search processing in Embodiment 1 of the present invention The figure which shows the example of the user interface in embodiment of this invention The figure which shows the example of the user interface in search in embodiment of this invention The figure which shows the example of the user interface after the search completion in embodiment of this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 101 Internet 102 Content server 103 Content storage apparatus 201 Receiving part 202 Buffer utilization state 203 Download buffer 204 Storage processing part 205 Persistent storage area 211 DRM client 212 Decoding part 213 Buffer 214 Content type determination part 215 Search attribute generation part A
216 Search attribute generation unit B
221 Additional information recording state 222 Search unit 223 User interface unit 224 Tamper resistant storage area 229 Storage area 231 Write pointer 232 Read pointer A
233 Read pointer B
234 Ring buffer 600 Data combined with headers added to a plurality of contents 601 Header 602 Contents 610 Contents 800 Search attribute information 801 Index information 802 Searched data 900 Window 901 Search target designation button 902 Search target display section 903 Search information Input section 904 Search start button 905 Search result display section 911 Search status 912 Search progress 931 Search status

Claims (18)

A data acquisition unit, a first storage area for storing data acquired by the data acquisition unit, an accumulation processing unit for reading data stored in the first storage area and writing to the second storage area; A content storage device comprising: a data analysis unit that reads data stored in one storage area, analyzes the data, and outputs an analysis result to a third storage area. The data acquisition unit reuses the first storage area after the accumulation processing unit reads the data from the first storage area and the data analysis unit reads the data from the first storage area. The content storage device according to claim 1. Including a decoding unit for decoding the data, the accumulation processing unit reads the data stored in the first storage area, writes the data in the second storage area without decoding, and analyzes the data 3. The content storage device according to claim 1, wherein the unit analyzes the data decrypted by the decryption unit and outputs an analysis result. 4. The content storage device according to claim 3, wherein the second storage area is not tamper resistant and the third storage area is tamper resistant. The decoding unit decodes at least header information among the data, and separates into a plurality of decoded data using a result of analyzing the header information,
The content storage device according to claim 3 or 4, wherein the data analysis unit analyzes a plurality of data decrypted by the decryption unit in parallel and outputs an analysis result. 6. The content storage device according to claim 3, wherein the decrypting unit does not decrypt the unencrypted content. The data analysis unit includes an additional information recording state recording unit, and the data analysis unit writes the analysis state of the data in the additional information recording state recording unit in addition to the processing of the data analysis unit. The content storage device according to any one of the above. 8. The content storage device according to claim 7, wherein the analysis status is information indicating whether data analysis is being performed. 8. The content storage device according to claim 7, wherein the analysis status is information indicating a progress of data analysis. 8. The content storage device according to claim 7, wherein the analysis status is an added value of analysis statuses of a plurality of data analyzed in parallel. The content storage according to any one of claims 1 to 10, further comprising a search unit that searches for predetermined information from data stored in the third storage area and outputs a search result. apparatus. 12. The content storage device according to claim 11, further comprising: a user interface unit that outputs the result output from the search unit and the analysis status recorded in the additional information recording state recording unit in association with each other. Including an index information output unit for outputting index information indicating a position on the content, and storing the analysis result output by the data analysis unit in association with the index information output by the index information output unit in the third storage area The content storage device according to claim 1, wherein the content storage device is a content storage device. 14. The content storage according to claim 13, wherein the index information is time information, the data analyzed by the data analysis unit is a stream including at least a voice stream, and the analysis unit of the data analysis unit is voice recognition. apparatus. A data acquisition step, a step of storing the data acquired in the data acquisition step in the first storage area, an accumulation processing step of reading the data stored in the first storage area and writing in the second storage area; A content storage method comprising a data analysis step of reading data stored in a first storage area, analyzing the data, and outputting an analysis result to a third storage area. A data acquisition step, a step of storing the data acquired in the data acquisition step in the first storage area, an accumulation processing step of reading the data stored in the first storage area and writing in the second storage area; A data storage program comprising: a data analysis step of reading data stored in the first storage area, analyzing the data, and outputting an analysis result to the third storage area. A recording medium on which the program according to claim 16 is recorded. A data acquisition unit that stores the acquired data in the first storage area, an accumulation processing unit that reads the data stored in the first storage area and writes the data in the second storage area, and the first storage area An information processing apparatus comprising: a data analysis unit that reads stored data, analyzes the data, and outputs an analysis result to a third storage area.

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