EP2069978A2 - Method for searching content by a soap operation - Google Patents

Method for searching content by a soap operation

Info

Publication number
EP2069978A2
EP2069978A2 EP08793635A EP08793635A EP2069978A2 EP 2069978 A2 EP2069978 A2 EP 2069978A2 EP 08793635 A EP08793635 A EP 08793635A EP 08793635 A EP08793635 A EP 08793635A EP 2069978 A2 EP2069978 A2 EP 2069978A2
Authority
EP
European Patent Office
Prior art keywords
type
element name
mp7qf
fieldcombination
choice
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08793635A
Other languages
German (de)
French (fr)
Other versions
EP2069978A4 (en
Inventor
Tae Bum Lim
Jong Sul Lee
Seok Pil Lee
Kyoung Ro Yoon
Saim Shin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Korea Electronics Technology Institute
Original Assignee
Korea Electronics Technology Institute
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Korea Electronics Technology Institute filed Critical Korea Electronics Technology Institute
Publication of EP2069978A2 publication Critical patent/EP2069978A2/en
Publication of EP2069978A4 publication Critical patent/EP2069978A4/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
    • H04N21/2353—Processing of additional data, e.g. scrambling of additional data or processing content descriptors specifically adapted to content descriptors, e.g. coding, compressing or processing of metadata
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/90—Details of database functions independent of the retrieved data types
    • G06F16/95—Retrieval from the web
    • G06F16/951—Indexing; Web crawling techniques
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/40—Data acquisition and logging
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • H04L65/61—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio
    • H04L65/612—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio for unicast
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/27—Server based end-user applications
    • H04N21/278—Content descriptor database or directory service for end-user access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/85—Assembly of content; Generation of multimedia applications
    • H04N21/854—Content authoring
    • H04N21/8543—Content authoring using a description language, e.g. Multimedia and Hypermedia information coding Expert Group [MHEG], eXtensible Markup Language [XML]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/68—Systems specially adapted for using specific information, e.g. geographical or meteorological information
    • H04H60/73—Systems specially adapted for using specific information, e.g. geographical or meteorological information using meta-information

Definitions

  • the present disclosure relates to a contents searching service, and in particular, to a method for searching contents using a Simple Object Access Protocol (SOAP) operation.
  • SOAP Simple Object Access Protocol
  • TV- Anytime being nongovernmental global standard is a standard protocol for providing an Anytime service that enables users to store desired contents and to view the stored contents by matching user's preference information with metadata on the basis of the metadata representing the description information of contents.
  • the metadata are the description information of contents.
  • the metadata include a content-based description and Electronic Program Guide (EPG) information defined in MPEG-7, and enable users to easily search and select desired contents.
  • EPG Electronic Program Guide
  • a metadata standard is configured with two parts.
  • a part A defines a format for describing the metadata, i.e., a schema, and uses extensible Markup Language (XML) based MPEG-7 Description Definition Language (DDL) (ISO/IEC 15938-2).
  • a part B relates to the transmission of the metadata, and includes Binary Format for MPEG-7 (ISO/IEC 15938-1), fragmentation model, encapsulation and indexing schemes.
  • Figure 1 illustrates a configuration of a general TV-Anytime metadata.
  • TV- Anytime metadata include program description metadata and user description metadata, wherein the program description metadata are configured with content description metadata and instance description metadata.
  • the metadata for one program are a content identifier called Content Reference Identifier (CRID) and are interconnected.
  • CRID Content Reference Identifier
  • the content description metadata are generated by a content creator, and include a program title, a genre, an abstract, a critic review and the like.
  • the instance description metadata are generated by a content provider, and include a location (broadcast time, channel, Uniform Resource Locator (URL) and the like), a use rule, a delivery parameter and the like.
  • the user description metadata include a user preference, a usage history, a personal bookmark and the like, and are generated by a user.
  • the TV- Anytime standard defines two types of metadata web services for providing interactive metadata service through a return path, wherein each of the metadata web services is a well-defined behavior and a remote procedure for an input/output set.
  • the remote procedure is defined as a SOAP operation type, and includes a get_Data operation for the search of the metadata and a submit_Data operation for a user description submission.
  • SOAP protocol is an XML communication protocol enabling to access to objects in a distributed environment.
  • a request/response type used in a TV- Anytime metadata service is defined in a name space of "urn:tva:transport:2002" wherein the name space is provided as a tool for the verification of various messages.
  • Types defined in a metadata spec and a content referencing standard are referred to in a transport name space.
  • a schema fragment is defined in the name space, and a name space provider is defined as "tns:" in the schema fragment.
  • a complete XML schema file is tva_transport_types_vl0.xsd.
  • the get_Data operation provides a function that enables clients to search TV-
  • Anytime data on a program or a program group from a server Anytime data on a program or a program group from a server.
  • Examples of functions that a TV- Anytime metadata provider can provide using the get-Data operation are as follows.
  • [13] Receive a query of a specific metadata attribute (for example, a genre, an actor and the like), and return a program corresponding to the received query.
  • a specific metadata attribute for example, a genre, an actor and the like
  • the get_Data operation supports all query types in principle, and provides a wide scope of query on a metadata limitation condition.
  • the request format designates three types of parameters to clients and designates an element type returned as a result value of a query (search) to a RequestedTables type.
  • the response format of the get_Data operation include 0 or at least one XML instance document on elements (TVAMain, ContentReferencingTable, InvalidFragments), and returns a query result value according to the RequestedTables type requested by the request format.
  • the TV-Anytime operation which is defined at present performs the comparison search of a character string on a field value such as a specific element and a specific attribute on which a search is desired.
  • a related art metadata providing method using the SOAP operation is a method that searches contents according to titles or genres with the fundamental search type and structure of the metadata (for example, a text comparison on a specific field value).
  • an object of the present disclosure is to provide a method for searching content by a SOAP operation, which enables to easily perform a content query by adding a corresponding query request field requesting various content queries to a
  • Another object of the present disclosure is to provide a method for searching content by a SOAP operation, which enables to receive a service on corresponding contents satisfying a complex operation result using an arithmetic operation in a SOAP query operation.
  • SOAP Object Access Protocol
  • the method including: adding a request element field type in order to request various content searches through an arithmetic operation in a SOAP query operation; and transmitting a request message of the SOAP query operation to which the request element field type is added to a content service server.
  • the request message may include a constant value (ConstantValue) type for allotting an operand of an arithmetic operation as a constant, and an arithmetic operator
  • the constant value (ConstantValue) type may define all types associated with an arithmetic operation in a MPEG-7 and XML based type as optional elements.
  • the transmitting of the request message may include grouping records of the same field values defined through grouping on the basis of a specific condition to perform a grouping operation.
  • the request element may include at least one operator of Sum, Average, Count, Max,
  • the SOAP operation may perform an arithmetic operation with other operand using an operation result value of the other operator as an operand.
  • a computer-readable storage medium storing a command which performs each operation of a method for searching content by a Simple Object Access Protocol (SOAP) operation.
  • SOAP Simple Object Access Protocol
  • the present disclosure adds an operator associated with an arithmetic operation to a corresponding query request field which requests the search result of various contents to a SOAP query operation, thereby enabling to perform a content query by a complex operation expression.
  • Figure 1 is a block diagram of a general TV- Anytime metadata.
  • Figures 2 to 4 are exemplary diagrams illustrating a related art request format of the get_Data operation.
  • Figure 5 is an exemplary diagram illustrating a related art response format of the get_Data operation.
  • Figure 6 illustrates a concept of a metadata distribution operation according to an exemplary embodiment.
  • Figure 7 is an exemplary diagram illustrating a constant value type according to an exemplary embodiment.
  • Figures 8 to 11 are exemplary diagrams illustrating a field combination type according to an exemplary embodiment.
  • Figure 12 is an exemplary diagram for describing a method for searching content by a SOAP operation according to an exemplary embodiment.
  • a method for searching content by a SOAP operation provides an arithmetic operation type and a grouping operation type for a content query search. Therefore, the method according to an exemplary embodiment proposes an arithmetic operator and a constant value type for allotting only a constant to the operands of an arithmetic operation. Furthermore, the method according to an exemplary embodiment has a technical point that it enables to perform a complex operation through an intrinsic operation of an arithmetic operation and a grouping operation by adding the arithmetic operator and the constant value type to a specific field of a SOAP query operation, thereby enabling to search contents according to an operation result.
  • Figure 6 illustrates a concept of a metadata distribution operation according to an exemplary embodiment.
  • get_Data operation supports all query types in principle, and provides a wide scope of query on a metadata limitation condition.
  • a request element field type is added to a specific field of the get_Data operation through an intrinsic operation of a comparison operation in order to express a complex operation. Then, the metadata service server returns a query result value of the SOAP request message to which the request element field type is added by a SOAP response message [get_Data() Response].
  • a constant value type is a type that is defined for allotting an operand of an arithmetic operation as a constant.
  • the constant value type defines all types associated with the arithmetic operation as optional elements in a MPEG-7 and XML based type, and includes the defined elements.
  • any one of type elements emerging in the constant value type is selected as an operand type so that it includes an operand value and type information.
  • One type is selected from a ConstantValue type, and thus it is possible to immediately check the types of operands under use of the operands for a right operation.
  • a content information extracting process requires the definition of operators carrying arithmetic values for clarification of an extraction condition as well as the generation of an extraction result. Therefore, a content query type also requires the definition of the following important arithmetic operators.
  • a field combination type is defined as a parent class of all operators carrying arithmetic values. All arithmetic operators must succeed to FieldCombination as an abstract type. Moreover, the arithmetic operators must carry result values after each operation. [57] Such a field combination type is expressed as illustrated in Figures 8 to 11, and defines the arithmetic operator types expressed in the following Table 2 for applying to a query type. [58] Table 2 [Table 2] [Table ]
  • Such a field combination type defines the arithmetic operator types including the
  • the Sum, Average, Count, Max, Min operators may be performed together by selectively defining a GroupBy operation.
  • the GroupBy operation is that it groups the records of the same field values defined in GroupBy on the basis of a specific condition and is defined to perform a specific operation.
  • the GroupBy operation enables to perform an arithmetic operation on a file size (FileSize) having the same BitRate.
  • the Sum, Average, Count, Max and Min operators may perform an operation including one or more operands.
  • the Add and Multiply operators require the operation between two or more operands.
  • the Subtract, Divide and Modulus operators necessarily take two operands.
  • the Round, Floor, Abs and Ceil operators are defined as an operation for a single operand. Since FieldCombinationType is recursively defined, all operators may perform a complex operation expression through an intrinsic operation.
  • Figure 12 is an exemplary diagram for describing a method for searching content by a SOAP operation according to an exemplary embodiment.
  • Figure 12 is an example of the add, divide and sum operators.
  • the Add operator sums the file size (FileSize) of a MediaFormatType field, the round-off value of the field size of MediaFormatType and the Bandwidth value of the MediaFormatType.
  • the above-described SOAP operation according to an exemplary embodiment defines an operation result value of other operator as an operand and performs an arithmetic operation on the defined operand and other operand, thereby enabling to perform a more complex content query.
  • the SOAP operation according to an exemplary embodiment defines an operation result value of a comparison operator as a first operand, defines other operand as a second operand, and performs an arithmetic operation on the defined operands, thereby querying more complex contents.
  • the present disclosure adds an operator associated with an arithmetic operation to a corresponding query request field which requests the search result of various contents to a SOAP query operation, thereby enabling to perform a content query by a complex operation expression.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Databases & Information Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Data Mining & Analysis (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Computer Security & Cryptography (AREA)
  • Mathematical Physics (AREA)
  • Software Systems (AREA)
  • Library & Information Science (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
  • Information Transfer Between Computers (AREA)

Abstract

Provided is a method for searching contents using a Simple Object Access Protocol (SOAP) operation. The method includes adding a request element field type in order to request various content searches through an arithmetic operation in a SOAP query operation; and transmitting a request message of the SOAP query operation to which the request element field type is added to a content service server. The method adds an operator associated with an arithmetic operation to a corresponding query request field which requests the search result of various contents to a SOAP query operation, thereby enabling to perform a content query by a complex operation expression.

Description

Description
METHOD FOR SEARCHING CONTENT BY A SOAP
OPERATION
Technical Field
[1] The present disclosure relates to a contents searching service, and in particular, to a method for searching contents using a Simple Object Access Protocol (SOAP) operation.
[2]
Background Art
[3] Recently, due to the full-scale providing of a digital broadcast service, studies have been made on a technology for providing a custom broadcast service in multi-channel and multi-medium environments. As an example, TV- Anytime being nongovernmental global standard is a standard protocol for providing an Anytime service that enables users to store desired contents and to view the stored contents by matching user's preference information with metadata on the basis of the metadata representing the description information of contents.
[4] As described above, the metadata are the description information of contents. In the
TV- Anytime, the metadata include a content-based description and Electronic Program Guide (EPG) information defined in MPEG-7, and enable users to easily search and select desired contents. A metadata standard is configured with two parts. A part A defines a format for describing the metadata, i.e., a schema, and uses extensible Markup Language (XML) based MPEG-7 Description Definition Language (DDL) (ISO/IEC 15938-2). A part B relates to the transmission of the metadata, and includes Binary Format for MPEG-7 (ISO/IEC 15938-1), fragmentation model, encapsulation and indexing schemes.
[5] Figure 1 illustrates a configuration of a general TV-Anytime metadata. The general
TV- Anytime metadata include program description metadata and user description metadata, wherein the program description metadata are configured with content description metadata and instance description metadata. The metadata for one program are a content identifier called Content Reference Identifier (CRID) and are interconnected.
[6] The content description metadata are generated by a content creator, and include a program title, a genre, an abstract, a critic review and the like. The instance description metadata are generated by a content provider, and include a location (broadcast time, channel, Uniform Resource Locator (URL) and the like), a use rule, a delivery parameter and the like. The user description metadata include a user preference, a usage history, a personal bookmark and the like, and are generated by a user.
[7] The TV- Anytime standard defines two types of metadata web services for providing interactive metadata service through a return path, wherein each of the metadata web services is a well-defined behavior and a remote procedure for an input/output set. In XML based Web Service Description Language (WSDL), the remote procedure is defined as a SOAP operation type, and includes a get_Data operation for the search of the metadata and a submit_Data operation for a user description submission. For example, the above-described SOAP protocol is an XML communication protocol enabling to access to objects in a distributed environment.
[8] A request/response type used in a TV- Anytime metadata service is defined in a name space of "urn:tva:transport:2002" wherein the name space is provided as a tool for the verification of various messages. Types defined in a metadata spec and a content referencing standard are referred to in a transport name space. A schema fragment is defined in the name space, and a name space provider is defined as "tns:" in the schema fragment. A complete XML schema file is tva_transport_types_vl0.xsd.
[9] 1. get_Data operation
[10] The get_Data operation provides a function that enables clients to search TV-
Anytime data on a program or a program group from a server. Examples of functions that a TV- Anytime metadata provider can provide using the get-Data operation are as follows.
[11] - Return content referencing data of the CRID using a CRID list.
[12] - Return the TV- Anytime metadata of the CRID using the CRID list.
[13] - Receive a query of a specific metadata attribute (for example, a genre, an actor and the like), and return a program corresponding to the received query.
[14] - Respond to a query for a specific time or a specific channel, and return a corresponding program.
[15] The get_Data operation supports all query types in principle, and provides a wide scope of query on a metadata limitation condition.
[16] A. Request format
[17] Referring to Figures 2 to 4, in the get_Data operation, the request format designates three types of parameters to clients and designates an element type returned as a result value of a query (search) to a RequestedTables type.
[18] B. Response format
[19] Referring to Figure 5, the response format of the get_Data operation include 0 or at least one XML instance document on elements (TVAMain, ContentReferencingTable, InvalidFragments), and returns a query result value according to the RequestedTables type requested by the request format.
[20] As described above, upon request of a search query, the TV-Anytime operation which is defined at present performs the comparison search of a character string on a field value such as a specific element and a specific attribute on which a search is desired. [21] A related art metadata providing method using the SOAP operation is a method that searches contents according to titles or genres with the fundamental search type and structure of the metadata (for example, a text comparison on a specific field value).
However, since a type for representing various output descriptions is not defined, the related art metadata providing method cannot service query contents corresponding to various queries. [22]
Disclosure of Invention
Technical Problem [23] Therefore, an object of the present disclosure is to provide a method for searching content by a SOAP operation, which enables to easily perform a content query by adding a corresponding query request field requesting various content queries to a
SOAP query operation. [24] Another object of the present disclosure is to provide a method for searching content by a SOAP operation, which enables to receive a service on corresponding contents satisfying a complex operation result using an arithmetic operation in a SOAP query operation. [25]
Technical Solution [26] According to an aspect, there is provided a method for searching content by a Simple
Object Access Protocol (SOAP) operation, the method including: adding a request element field type in order to request various content searches through an arithmetic operation in a SOAP query operation; and transmitting a request message of the SOAP query operation to which the request element field type is added to a content service server. [27] The request message may include a constant value (ConstantValue) type for allotting an operand of an arithmetic operation as a constant, and an arithmetic operator
(FieldCombination) type of operator information clarifying a content extracting condition. [28] The constant value (ConstantValue) type may define all types associated with an arithmetic operation in a MPEG-7 and XML based type as optional elements. [29] The transmitting of the request message may include grouping records of the same field values defined through grouping on the basis of a specific condition to perform a grouping operation. [30] The request element may include at least one operator of Sum, Average, Count, Max,
Min, Add, Multiply, Subtract, Divide, Modulus, Round, Floor, Ceil, Field, Field- Combination and GroupBy operators.
[31] The SOAP operation may perform an arithmetic operation with other operand using an operation result value of the other operator as an operand.
[32] According to another aspect, there is provided a computer-readable storage medium storing a command which performs each operation of a method for searching content by a Simple Object Access Protocol (SOAP) operation.
Advantageous Effects
[33] The present disclosure adds an operator associated with an arithmetic operation to a corresponding query request field which requests the search result of various contents to a SOAP query operation, thereby enabling to perform a content query by a complex operation expression.
[34]
Brief Description of the Drawings
[35] Figure 1 is a block diagram of a general TV- Anytime metadata.
[36] Figures 2 to 4 are exemplary diagrams illustrating a related art request format of the get_Data operation.
[37] Figure 5 is an exemplary diagram illustrating a related art response format of the get_Data operation.
[38] Figure 6 illustrates a concept of a metadata distribution operation according to an exemplary embodiment.
[39] Figure 7 is an exemplary diagram illustrating a constant value type according to an exemplary embodiment.
[40] Figures 8 to 11 are exemplary diagrams illustrating a field combination type according to an exemplary embodiment.
[41] Figure 12 is an exemplary diagram for describing a method for searching content by a SOAP operation according to an exemplary embodiment.
[42]
Best Mode for Carrying Out the Invention
[43] A method for searching content by a SOAP operation according to an exemplary embodiment provides an arithmetic operation type and a grouping operation type for a content query search. Therefore, the method according to an exemplary embodiment proposes an arithmetic operator and a constant value type for allotting only a constant to the operands of an arithmetic operation. Furthermore, the method according to an exemplary embodiment has a technical point that it enables to perform a complex operation through an intrinsic operation of an arithmetic operation and a grouping operation by adding the arithmetic operator and the constant value type to a specific field of a SOAP query operation, thereby enabling to search contents according to an operation result.
[44] Hereinafter, specific embodiments will be described in detail with reference to the accompanying drawings. In description below, the specific details of a method for searching content by a SOAP operation according to the present invention are described for providing the more overall understanding of the present invention. The present invention may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.
[45] Figure 6 illustrates a concept of a metadata distribution operation according to an exemplary embodiment.
[46] In a TV- Anytime service, a client transmits a SOAP request message [get_Data()
Request] by a get_Data operation to a metadata service server through the Internet network (IP Network). At this point, the get_Data operation supports all query types in principle, and provides a wide scope of query on a metadata limitation condition.
[47] In particular, a request element field type is added to a specific field of the get_Data operation through an intrinsic operation of a comparison operation in order to express a complex operation. Then, the metadata service server returns a query result value of the SOAP request message to which the request element field type is added by a SOAP response message [get_Data() Response].
[48] 1. Constant Value
[49] A constant value type is a type that is defined for allotting an operand of an arithmetic operation as a constant. The constant value type defines all types associated with the arithmetic operation as optional elements in a MPEG-7 and XML based type, and includes the defined elements.
[50] Upon application of an operator, any one of type elements emerging in the constant value type is selected as an operand type so that it includes an operand value and type information. One type is selected from a ConstantValue type, and thus it is possible to immediately check the types of operands under use of the operands for a right operation.
[51] Such a constant value type is expressed as illustrated in Figure 7, and arithmetic operand types are defined as described in Table 1 below.
[52] Table 1 [Table 1] [Table ]
[53] 2. Arithmetic Operators
[54] A content information extracting process requires the definition of operators carrying arithmetic values for clarification of an extraction condition as well as the generation of an extraction result. Therefore, a content query type also requires the definition of the following important arithmetic operators. [55] - Field Combination
[56] A field combination type is defined as a parent class of all operators carrying arithmetic values. All arithmetic operators must succeed to FieldCombination as an abstract type. Moreover, the arithmetic operators must carry result values after each operation. [57] Such a field combination type is expressed as illustrated in Figures 8 to 11, and defines the arithmetic operator types expressed in the following Table 2 for applying to a query type. [58] Table 2 [Table 2] [Table ]
[59] Such a field combination type defines the arithmetic operator types including the
Sum, Average, Count, Max, Min, Add, Multiply, Subtract, Divide, Modulus, Round, Floor, Ceil, and Abs operators. The Sum, Average, Count, Max and Min operators may be performed together by selectively defining a GroupBy operation. Herein, the GroupBy operation is that it groups the records of the same field values defined in GroupBy on the basis of a specific condition and is defined to perform a specific operation. For example, the GroupBy operation enables to perform an arithmetic operation on a file size (FileSize) having the same BitRate.
[60] The Sum, Average, Count, Max and Min operators may perform an operation including one or more operands. The Add and Multiply operators require the operation between two or more operands. The Subtract, Divide and Modulus operators necessarily take two operands. The Round, Floor, Abs and Ceil operators are defined as an operation for a single operand. Since FieldCombinationType is recursively defined, all operators may perform a complex operation expression through an intrinsic operation.
[61] Figure 12 is an exemplary diagram for describing a method for searching content by a SOAP operation according to an exemplary embodiment.
[62] Figure 12 is an example of the add, divide and sum operators. The Add operator sums the file size (FileSize) of a MediaFormatType field, the round-off value of the field size of MediaFormatType and the Bandwidth value of the MediaFormatType.
[63] The Divide operator divides the BitRate value of the MediaFormatType by 3, and divides the minimum value of TargerChannelBitRate by 3.
[64] The Sum operator sums the bit rate and file size of the MediaFormatType. Subsequently, the Sum operator groups a corresponding result as a file size having the same bit rate.
[65] The above-described SOAP operation according to an exemplary embodiment defines an operation result value of other operator as an operand and performs an arithmetic operation on the defined operand and other operand, thereby enabling to perform a more complex content query. For example, the SOAP operation according to an exemplary embodiment defines an operation result value of a comparison operator as a first operand, defines other operand as a second operand, and performs an arithmetic operation on the defined operands, thereby querying more complex contents.
[66] As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, unless otherwise specified, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the metes and bounds of the claims, or equivalents of such metes and bounds are therefore intended to be embraced by the appended claims. Industrial Applicability
[67] As described above, the present disclosure adds an operator associated with an arithmetic operation to a corresponding query request field which requests the search result of various contents to a SOAP query operation, thereby enabling to perform a content query by a complex operation expression.

Claims

Claims
[1] A method for searching content by a Simple Object Access Protocol (SOAP) operation, the method comprising: adding a request element field type in order to request various content searches through an arithmetic operation in a SOAP query operation; and transmitting a request message of the SOAP query operation to which the request element field type is added to a content service server.
[2] The method of claim 1, wherein the request message comprises a constant value
(ConstantValue) type for allotting an operand of an arithmetic operation as a constant, and an arithmetic operator (FieldCombination) type of operator information clarifying a content extracting condition.
[3] The method of claim 2, wherein the constant value (ConstantValue) type defines all types associated with an arithmetic operation in a MPEG-7 and XML based type as optional elements.
[4] The method of claim 1, wherein the transmitting of the request message comprises grouping records of the same field values defined through grouping on the basis of a specific condition to perform a grouping operation.
[5] The method of claim 1, wherein the SOAP query operation is a get_Data operation.
[6] The method of claim 1, wherein the request element field type allocates a constant to an operand of an arithmetic operation according to the following definition
<complexType name=" ConstantValue ">
<choice>
<element name= " unsigned 1" type="mpeg7:unsignedl"/>
<element name="unsigned2" type="mpeg7:unsigned2"/>
<element name="unsigned3" type="mpeg7:unsigned3"/>
<element name="unsigned4" type="mpeg7:unsigned4"/>
<element name="unsigned5" type="mpeg7:unsigned5"/>
<element name="unsigned6" type="mpeg7:unsigned6"/>
<element name="unsigned7" type="mpeg7:unsigned7"/>
<element name="unsigned8" type="mpeg7:unsigned8"/>
<element name="unsigned9" type="mpeg7:unsigned9"/>
<element name="unsignedlθ" type="mpeg7:unsignedlO"/>
<element name=" unsigned 11 " type="mpeg7:unsignedl 1 "/>
<element name="unsignedl2" type="mpeg7:unsignedl2"/>
<element name="unsignedl3" type="mpeg7:unsignedl3"/> <element name="unsignedl4" type="mpeg7:unsignedl4"/> <element name="unsignedl5" type="mpeg7:unsignedl5"/> <element name="unsignedl6" type="mpeg7:unsignedl6"/> <element name="unsignedl7" type="mpeg7:unsignedl7"/> <element name="unsignedl8" type="mpeg7:unsignedl8"/> <element name="unsignedl9" type="mpeg7:unsignedl9"/> <element name="unsigned20" type="mpeg7:unsigned20"/> <element name="unsigned21" type="mpeg7:unsigned21"/> <element name="unsigned22" type="mpeg7:unsigned22"/> <element name="unsigned23" type="mpeg7:unsigned23"/> <element name="unsigned24" type="mpeg7:unsigned24"/> <element name="unsigned25" type="mpeg7:unsigned25"/> <element name="unsigned26" type="mpeg7:unsigned26"/> <element name="unsigned27" type="mpeg7:unsigned27"/> <element name="unsigned28" type="mpeg7:unsigned28"/> <element name="unsigned29" type="mpeg7:unsigned29"/> <element name="unsigned30" type="mpeg7:unsigned30"/> <element name="unsigned31" type="mpeg7:unsigned31"/> <element name="unsigned31" type="mpeg7:unsigned31"/> <element name=" integer" type=" integer" /> <element name="float" type="float"/> <element name="double" type=" double "/> <element name=" decimal" type="decimal"/> <element name="long" type="long"/> <element name="int" type="int"/> <element name="short" type="short"/>
<element name="nonPositiveInteger" type="nonPositiveInteger"/> <element name="negativelnteger" type="negativeInteger"/> <element name="nonNegativeInteger" type="nonNegativeInteger"/> <element name="unsignedLong" type="unsignedLong"/> <element name="unsignedShort" type="unsignedShort"/> <element name="positivelnteger" type="positiveInteger"/> <element name="unsignedlnt" type="unsignedInt"/> <!add more!— > </choice> </complexType>
[7] The method of claim 1, wherein the request element comprises at least one operator of Sum, Average, Count, Max, Min, Add, Multiply, Subtract, Divide, Modulus, Round, Floor, Ceil, Field, FieldCombination and GroupBy operators.
[8] The method of claims 1, wherein when a plurality of operands are disposed in a
Sum operator according to the following definition, the SOAP operation means a sum of all operands
<complexType name="Sum">
<complexContent>
<extension base="mp7qf:FieldCombination">
<sequence>
<sequence maxθccurs="unbounded">
<choice>
<element name="Field" type="mp7qf:FieldType"/>
<elemen tname=" FieldCombination" type="mp7qf:FieldCombination"/>
</choice>
</sequence>
<element name=" GroupBy" type="mp7qf:FieldType" minOccurs="0"/>
</sequence>
</extension>
</complexContent>
</complexType>
[9] The method of claims 1, wherein when a plurality of operands are disposed in an
Average operator according to the following definition, the SOAP operation means an average of all operands
<complexType name=" Average ">
<complexContent>
<extension base="mp7qf:FieldCombination">
<sequence>
<sequence maxθccurs="unbounded">
<choice>
<element name="Field" type="mp7qf:FieldType"/>
<element name=" FieldCombination" type="mp7qf:FieldCombination"/>
</choice>
</sequence>
<element name=" GroupBy" type="mp7qf:FieldType" minOccurs="0"/>
</sequence>
</extension>
</complexContent>
</complexType>
[10] The method of claims 1, wherein when a plurality of operands are disposed in a Count operator according to the following definition, the SOAP operation means the number of all operands
<complexType name="Count">
<complexContent>
<extension base="mp7qf:FieldCombination">
<sequence>
<sequence maxθccurs="unbounded">
<choice>
<element name="Field" type="mp7qf:FieldType"/>
<element name="FieldCombination" type="mp7qf:FieldCombination"/>
</choice>
</sequence>
<element name="GroupBy" type="mp7qf:FieldType" minOccurs="0"/>
</sequence>
</extension>
</complexContent>
</complexType>
[11] The method of claims 1, wherein when a plurality of operands are disposed in a
Max operator according to the following definition, the SOAP operation means a maximum operand of all operands
<complexType name="Max">
<complexContent>
<extension base="mp7qf:FieldCombination">
<sequence>
<sequence maxθccurs="unbounded">
<choice>
<element name="Field" type="mp7qf:FieldType"/>
<element name="FieldCombination" type="mp7qf:FieldCombination"/>
</choice>
</sequence>
<element name="GroupBy" type="mp7qf:FieldType" minOccurs="0"/>
</sequence>
</extension>
</complexContent>
</complexType>
[12] The method of claims 1, wherein when a plurality of operands are disposed in a
Min operator according to the following definition, the SOAP operation means a minimum operand of all operands <complexType name="Min">
<complexContent>
<extension base="mp7qf:FieldCombination">
<sequence>
<sequence maxθccurs="unbounded">
<choice>
<element name="Field" type="mp7qf:FieldType"/>
<element name="FieldCombination" type="mp7qf:FieldCombination"/>
</choice>
</sequence>
<element name="GroupBy" type="mp7qf:FieldType" minOccurs="0"/>
</sequence>
</extension>
</complexContent>
</complexType>
[13] The method of claims 1, wherein when a plurality of operands are disposed in an
Add operator according to the following definition, the SOAP operation means a sum of all operands
<complexType name="Add">
<complexContent>
<extension base="mp7qf:FieldCombination">
<sequence minθccurs="2" maxθccurs="unbounded">
<choice>
<element name="Field" type="mp7qf:Field"/>
<element name="FieldCombination" type="mp7qf:FieldCombination"/>
<element name="ConstantValue" type="mp7qf:ConstantValueType"/>
</choice>
</sequence>
</extension>
</complexContent>
</complexType>
[14] The method of claims 1, wherein when a plurality of operands are disposed in a
Multiply operator according to the following definition, the SOAP operation means a multiplication of all operands
<complexType name=" Multiply ">
<complexContent>
<extension base="mp7qf:FieldCombination">
<sequence minθccurs="2" maxθccurs="unbounded"> <choice>
<element name="Field" type="mp7qf:FieldType"/>
<element name="FieldCombination" type="mp7qf:FieldCombination"/>
<element name="ConstantValue" type="mp7qf:ConstantValue"/>
</choice>
</sequence>
</extension>
</complexContent>
</complexType>
[15] The method of claims 1, wherein when first and second operands are disposed in a Subtract operator according to the following definition, the SOAP operation means the value of the second operand subtracted from the first operand
<complexType name="Subtract">
<complexContent>
<extension base="mp7qf:FieldCombination">
<sequence>
<choice>
<element name="Field" type="mp7qf:FieldType"/>
<element name="FieldCombination" type="mp7qf:FieldCombination"/>
<element name="ConstantValue" type="mp7qf:ConstantValue"/>
</choice>
<choice>
<element name="Field" type="mp7qf:FieldType"/>
<element name="FieldCombination" type="mp7qf:FieldCombination"/>
<element name="ConstantValue" type="mp7qf:ConstantValue"/>
</choice>
</sequence>
</extension>
</complexContent>
</complexType>
[16] The method of claims 1, wherein when first and second operands are disposed in a Divide operator according to the following definition, the SOAP operation means the quotient of the second operand divided by the first operand
<complexType name="Divide">
<complexContent>
<extension base="mp7qf:FieldCombination">
<sequence>
<choice> <element name="Field" type="mp7qf:FieldType"/>
<element name="FieldCombination" type="mp7qf:FieldCombination"/>
<element name="ConstantValue" type="mp7qf:ConstantValue"/>
</choice>
<choice>
<element name="Field" type="mp7qf:FieldType"/>
<element name="FieldCombination" type="mp7qf:FieldCombination"/>
<element name="ConstantValue" type="mp7qf:ConstantValueType"/>
</choice>
</sequence>
</extension>
</complexContent>
</complexType>
[17] The method of claims 1, wherein when first and second operands are disposed in a Modulus operator according to the following definition, the SOAP operation means the remainder of the second operand divided by the first operand
<complexType name=" Modulus ">
<complexContent>
<extension base="mp7qf:FieldCombination">
<sequence>
<choice>
<element name="Field" type="mp7qf:FieldType"/>
<element name="FieldCombination" type="mp7qf:FieldCombination"/>
<element name="ConstantValue" type="mp7qf:ConstantValue"/>
</choice>
<choice>
<element name="Field" type="mp7qf:FieldType"/>
<element name="FieldCombination" type="mp7qf:FieldCombination"/>
<element name="ConstantValue" type="mp7qf:ConstantValue"/>
</choice>
</sequence>
</extension>
</complexContent>
</complexType>
[18] The method of claims 1, wherein when one operand is disposed in a Round operator according to the following definition, the SOAP operation means an integer which is nearest to an operand
<complexType name="Round"> <complexContent>
<extension base="mp7qf:FieldCombination">
<sequence>
<choice>
<element name="Field" type="mp7qf:FieldType"/>
<element name="FieldCombination" type="mp7qf:FieldCombination"/>
<element name="ConstantValue" type="mp7qf:ConstantValue"/>
</choice>
</sequence>
</extension>
</complexContent>
</complexType>
[19] The method of any one of claims 1 to 8, wherein when one operand is disposed in a Floor operator according to the following definition, the SOAP operation means the smallest integer which is nearest to an operand
<complexType name="Floor">
<complexContent>
<extension base="mp7qf:FieldCombination">
<sequence>
<choice>
<element name="Field" type="mp7qf:FieldType"/>
<element name="FieldCombination" type="mp7qf:FieldCombination"/>
<element name="ConstantValue" type="mp7qf:ConstantValue"/>
</choice>
</sequence>
</extension>
</complexContent>
</complexType>
[20] The method of any one of claims 1 to 8, wherein when one operand is disposed in a Ceil operator according to the following definition, the SOAP operation means the greatest integer which is nearest to an operand
<complexType name="Ceil">
<complexContent>
<extension base="mp7qf:FieldCombination">
<sequence>
<choice>
<element name="Field" type="mp7qf:FieldType"/>
<element name="FieldCombination" type="mp7qf:FieldCombination"/> <element name="ConstantValue" type="mp7qf:ConstantValue"/>
</choice>
</sequence>
</extension>
</complexContent>
</complexType>
[21] The method of claims 1, wherein when one operand is disposed in a Ceil operator according to the following definition, the SOAP operation means the greatest integer which is nearest to an operand
<complexType name="Ceil">
<complexContent>
<extension base="mp7qf:FieldCombination">
<sequence>
<choice>
<element name="Field" type="mp7qf:FieldType"/>
<element name="FieldCombination" type="mp7qf:FieldCombination"/>
<element name="ConstantValue" type="mp7qf:ConstantValue"/>
</choice>
</sequence>
</extension>
</complexContent>
</complexType>
[22] The method of claims 1, wherein when one operand is disposed in an Abs operator according to the following definition, the SOAP operation means an absolute value of an operand
<complexType name="Abs">
<complexContent>
<extension base= " mpqf : ArithmeticExpres sionType " >
<choice>
<element name="Field" type="mpqf:FieldType"/>
<element name= " mp7qf : FieldCombination " type="mpqf:ArithmeticExpressionType"/>
</choice>
</extension>
</complexContent>
</complexType>
[23] The method of claims 1, wherein the SOAP operation performs an arithmetic operation with other operand using an operation result value of the other operator as an operand.
[24] The method of claims 23, wherein the other operator is a comparison operator.
[25] A computer-readable storage medium storing a command which performs each operation of a method for searching content by a Simple Object Access Protocol (SOAP) operation, the method being described in claims 1.
EP08793635A 2007-09-03 2008-09-02 Method for searching content by a soap operation Withdrawn EP2069978A4 (en)

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KR1020070088760A KR100936241B1 (en) 2007-09-03 2007-09-03 Method for searching content by a soap operation
PCT/KR2008/005142 WO2009031793A2 (en) 2007-09-03 2008-09-02 Method for searching content by a soap operation

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WO2009031793A3 (en) 2009-06-04
KR100936241B1 (en) 2010-01-12
KR20090023755A (en) 2009-03-06
WO2009031793A2 (en) 2009-03-12

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