JP2013110500A - Program reservation device and program processing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To more accurately detect shifting of a reserved program with a small amount of calculation.SOLUTION: With respect to each of a reserved program and a program to be broadcast, a program reservation device 100 identifies effective character positions as positions where effective characters are disposed in a program title, on the basis of a time when the program is to be broadcast, a channel where the program is to be broadcast, and the structure of the program title. The device 100 excludes the characters at positions except the identified effective character positions from the program title of the reserved program and that of the program to be broadcast and compares the resulting program titles with each other, thereby determining whether the reserved program and the program to be broadcast match or not.

Description

  The present invention relates to a program reservation apparatus and a program processing method.

  As a conventional program reservation apparatus, there is an apparatus that automatically changes a reservation time when a broadcast time of a continuous program that is broadcast a plurality of times, such as a drama, is changed. In this program reservation device, the program title of the reserved program is stored at the time of recording reservation, and when the recording reservation is changed and executed on the day after the next day, a time zone within a predetermined range centering on the start time Then, based on the program title, the program broadcast on that day is detected, and the start time and end time of the detected program are obtained, and the recording reservation is executed (see, for example, Patent Document 1). Note that the process of detecting the movement of a reserved program, in other words, the process of detecting a program broadcast at a date and time different from the actually reserved date and time among the reserved programs is called program tracking. A program that becomes a comparison source at the time of program tracking is referred to as a reservation source program, and a comparison target program is referred to as a search target program.

  As another program reservation device, for example, after removing characters in a specific character section (also referred to as an excluded character section) enclosed in parentheses, etc., from a program title acquired from an electronic program guide (EPG: Electric Program Guide) One that performs program tracking is also known (see, for example, Patent Document 2). This is a technique that pays attention to the feature that a program title is composed of a program title name and a subtitle name, and the subtitle name is often surrounded by symbols such as parentheses.

  As another program reservation device, there is a device that calculates the similarity between program titles based on the length and number of character common parts from the entire program titles of the reservation source program and the search target program (for example, Patent Document 3). reference).

JP 2003-046921 A (paragraph 0009, FIG. 1) JP 2008-067332 A (page 9-10) JP 2007-281750 A (pages 11-13)

  In the prior art described in Patent Document 1, the program title of the reservation source program is compared with the program title in the EPG, and the reservation program is specified by the degree of matching of the characters. Therefore, similar to the program title of the reservation source program When there are a plurality of programs having the same title (a title including common characters), there is a problem that an erroneous program is erroneously detected as a reserved program.

  Further, in the prior art described in Patent Document 2, a subtitle name that hinders comparison at the time of program tracking is removed in advance, and then the matching of the program title is detected, so that the character search amount ( (Computation amount) can be reduced, and program tracking accuracy can be improved. However, there are various program name naming rules depending on the broadcasting station and time zone, and the subtitle name is not necessarily surrounded by symbols such as parentheses. For example, when a program title such as “subtitle name“ title name ”” or “genre name“ title name ”” is attached, the title name to be compared is excluded, so the program is tracked. There is a problem of false detection.

  Further, in the prior art described in Patent Document 3, when the program title of the reservation source program or the search target program is very long, the calculation amount for determining the matching of the character strings becomes enormous, and the program is incorporated. An inexpensive CPU such as a device has a problem that the processing time becomes long. If a CPU equipped with a dedicated arithmetic processing chip is employed, high-speed processing can be performed. However, when such a device is employed, there is a problem that the cost of the device increases.

  Accordingly, an object of the present invention is to improve detection accuracy of reserved program movement with a small amount of calculation.

A program reservation apparatus according to an aspect of the present invention includes:
Application rule information indicating effective character application rules for each combination of broadcast time and broadcast channel, a program structure type indicating an arrangement position of a predetermined symbol indicating a section in a program title, and the effective character application rule For each combination, a correction rule including valid character determination information indicating a valid character position that is a position where a valid character is arranged in the program title, and the program title, broadcast date and time and broadcast channel of the reserved program Including a reserved program information, a storage unit for storing,
A digital broadcast wave is received, a stream is generated from the digital broadcast wave, a predetermined process is performed on the stream, and a program title, a broadcast date and time, and a broadcast channel of a program to be broadcasted from the stream are determined. A stream processing unit for acquiring program information including:
In each of the program title included in the reserved program information and the program title included in the program information, a structure determination unit that identifies the program structure type,
Referring to the application rule information, a combination of a broadcast time indicated by a broadcast date and time included in the reserved program information and a broadcast channel included in the reserved program information, and included in the program information A process for specifying effective character application rules corresponding to each of a combination of a broadcast time indicated by a broadcast date and time and a broadcast channel included in the program information;
A combination of the program structure type of the program title included in the reserved program information with reference to the effective character determination information, the effective character application rule specified corresponding to the reserved program information, and the program A process for specifying a valid character position corresponding to each combination of a program structure type of a program title included in the information and a valid character application rule specified corresponding to the program information, and
A character other than an effective character position specified corresponding to the reserved program information is excluded from characters included in the program title indicated by the reserved program information to generate a corrected reserved program title, and the program A correction unit that performs a process of generating a corrected broadcast program title by excluding characters other than the effective character position specified corresponding to the program information from the characters included in the program title indicated by the information;
Similarity determination for calculating a program similarity index indicating a higher value as the degree of coincidence between the reserved program and the broadcasted program is higher according to a comparison result between the modified reserved program title and the modified broadcast program title And
Among the broadcasted programs, the program having the highest program similarity index is specified as a program that matches the reserved program, and the predetermined stream is set for the stream of the program specified by the stream processing unit. And an overall control unit that performs processing.

  According to one embodiment of the present invention, it is possible to improve the detection accuracy of reserved program movement with a small amount of calculation.

It is a block diagram which shows roughly the program reservation apparatus which concerns on Embodiment 1 and 2. FIG. 6 is a schematic diagram illustrating an example of a data structure of reserved program information according to Embodiment 1. FIG. FIG. 3 is a schematic diagram showing a code system table for a day of the week mode in the first embodiment. 6 is a schematic diagram illustrating an example of a data structure of excluded character information according to Embodiment 1. FIG. 6 is a schematic diagram illustrating an example of a data structure of structure definition information in Embodiment 1. FIG. 6 is a schematic diagram illustrating an example of a data structure of a correction rule in the first embodiment. FIG. 4 is a schematic diagram illustrating an example of a data structure of application rule information in Embodiment 1. FIG. 3 is a flowchart showing program tracking in the first embodiment. 3 is a flowchart showing a program similarity index calculation process in the first embodiment. 10 is a schematic diagram illustrating an example of a data structure of a correction rule according to Embodiment 2. FIG. 10 is a flowchart showing program tracking in the second embodiment. 10 is a flowchart showing a program similarity index calculation process in the second embodiment. It is a block diagram which shows roughly the program reservation apparatus which concerns on Embodiment 3. FIG.

Embodiment 1 FIG.
The first embodiment pays attention to the fact that the program title naming rule is constant depending on the broadcasting station and time zone, and after correcting the program title with the correction rule based on this naming rule, the character of the corrected program title It is characterized by detecting whether or not the program is the same from the matching of the columns. By making such corrections, it is possible to accurately track the program with a small amount of calculation.

  FIG. 1 is a block diagram schematically showing a program reservation apparatus 100 according to the first embodiment. The program reservation apparatus 100 includes a stream processing unit 110, a storage unit 120, a system control unit 130, a timekeeping unit 140, and an operation unit 150. The reference numerals in parentheses in FIG. 1 are the configurations in the second embodiment.

  The stream processing unit 110 executes video / audio stream processing. For example, the stream processing unit 110 performs digital broadcast reception processing, stream generation processing, stream recording processing, stream playback processing, program information extraction processing, and the like in accordance with instructions from the system control unit 130. .

The stream processing unit 110 includes a broadcast receiving unit 111, a stream control unit 112, a program information acquisition unit 113, a program storage unit 114, and a program reproduction unit 115.
The broadcast receiving unit 111 receives a digital broadcast and generates a stream from the digital broadcast.
The stream control unit 112 controls the overall flow of the stream in the program reservation apparatus 100.
The program information acquisition unit 113 decodes program information including at least a program title of a program to be broadcast, a broadcast date and time, and a broadcast channel, such as an EPG included in a digital broadcast stream. Here, the program information may include genre information indicating the genre of the broadcast program.
The program recording unit 114 stores a video stream and an audio stream corresponding to the program. The program recording unit 114 can be realized by a recording / reproducing apparatus capable of reading and writing information, such as a hard disk device. In this embodiment, the program recording unit 114 is described as a hard disk device, but may be a recording / reproducing device using a portable medium such as an optical disk drive device or an SD media drive.
The program playback unit 115 decodes the output video signal and output audio signal of the program from the video stream and audio stream. The program recorded in the program reservation device 100 is output from the program reproduction unit 115 to the external display device 170.

  The storage unit 120 stores information necessary for processing in the program reservation device 100. For example, the storage unit 120 stores reserved program information 121, excluded character information 122, structure definition information 123, and correction rules 124.

The reserved program information 121 is information indicating a program reserved for recording. In the first embodiment, the reserved program information 121 includes at least a program title, a broadcast channel, and a broadcast time of a program reserved for recording.
FIG. 2 is a schematic diagram showing an example of the data structure of the reserved program information 121. The reserved program information 121 is composed of a plurality of reserved program records 121a. In Embodiment 1, it is assumed that 32 reserved program records 121a can be held, but the number is not limited to this number. Here, the reserved program record 121a shows details of the recording reservation, and for example, the broadcast type 121b, the channel number 121c, the broadcast start date and time 121d, the broadcast end date and time 121e, the program title 121f, and the genre information 121g and day mode 121h.

The broadcast type 121b is a broadcast type of a program reserved for recording, such as BS digital, terrestrial digital, or CS digital.
The channel number 121c is a channel number on which a program reserved for recording is broadcasted, such as 6ch shown in the broadcast channel column of program information.
The broadcast channel is specified by the broadcast type 121b and the channel number 121c.
The broadcast start date and time 121d is the broadcast start date and time of a program that has been reserved for recording, such as November 1, 2011 at 14:00.
The broadcast end date and time 121e is the broadcast end date and time of a program reserved for recording, for example, November 10, 2011 at 15:00.
The broadcast date and time of the program reserved for recording is specified by the broadcast start date and time 121d and the broadcast end date and time 121e.
The program title 121f is, for example, a program title of a program reserved for recording, such as “Spring Sonata“ 3rd: Farewell with Sonin ”.
The genre information 121g is a genre attribute of a program reserved for recording, such as “overseas drama / none / none”, for example. Here, the genre information can indicate a maximum of three genres. For example, in the case of “overseas drama / none / none”, only one genre is shown.
The day-of-week mode 121h is a mode type that defines the recording reservation operation. Details of the day mode 121h will be described in detail with reference to FIG. For example, the day-of-week mode 121h indicates numerically whether the recording is performed only once by the reservation or the recording is performed a plurality of times by the reservation. In addition, in the case where recording is performed a plurality of times by reservation, the day-of-week mode 121h further indicates whether the recording is performed daily by reservation or whether the recording is performed weekly by reservation. Show.

  FIG. 3 is a schematic diagram showing a code system table of the day mode 121h. The day-of-week mode when the recording is performed only once by reservation is “1”. The day-of-week mode when recording is performed every day by reservation is “2”. The day of the week mode when the recording is performed only on Sunday by reservation is “3”. The day of the week mode when the recording is performed only on Monday by reservation is “4”. The day of the week mode when the recording is performed only on Tuesday by reservation is “5”. The day of the week mode when the recording is performed only on Wednesday by reservation is “6”. The day of the week mode when the recording is performed only on Thursday by reservation is “7”. The day of the week mode when the recording is performed only on Friday by reservation is “8”. The day of the week mode when the recording is performed only on Saturday by reservation is “9”. The day-of-week mode is “10” when recording is performed every five days from Monday to Friday by reservation. The day of the week mode is “11” when recording is performed every six days from Monday to Saturday by reservation.

  Here, as the day of the week mode 121h, when “1” is designated and when any other number is designated, the handling of the reserved recording is different. When “1” is designated as the day of week mode 121h, the program only on the broadcast day is recorded. However, when a number other than “1” is set in the day of week mode of the broadcast day, the day of the week mode 121h is set. A plurality of programs broadcast on the indicated day of the week are recorded. For this reason, it is necessary to detect a reserved program broadcast on a date and time different from the actually reserved date and time. A recording reservation in which a number other than “1” is designated as the day-of-week mode 121h is referred to as repeated recording reservation. Here, in the first embodiment, the program tracking is performed when the repeated recording reservation is designated.

Returning to the description of FIG. 1, the excluded character information 122 indicates specific characters to be excluded from the program title when the program is tracked. FIG. 4 is a schematic diagram illustrating an example of the data structure of the excluded character information 122. As shown in FIG. 4, the excluded character information 122 is information in a table format having a character type column 122a, a character column 122b, and a character type column 122c.
The character type column 122a stores a character type that is identification information for identifying the character stored in the character column 122b.
The character column 122b stores specific characters to be excluded from the program title when the program is tracked.
The character type column 122c stores a character type indicating the type of character stored in the character column 122b.

As shown in FIG. 4, in the first embodiment, three types of character types are defined: an exclusion symbol, a breakpoint, and an exclusion section instruction symbol.
For example, in FIG. 4, a type 1 square symbol, a type 2 inverted triangle symbol, a type 3 midpoint symbol, and a type 4 space are defined as exclusion symbols. When characters defined as exclusion symbols are included in the program title, the program title is corrected by excluding such characters. Since the type 1 square symbol is often used as a program delimiter, the type 2 inverted triangle symbol is often used as a program content information delimiter. Since spaces are often used as character string delimiters in general, they are treated as exclusion characters.

  In FIG. 4, type 5 reading marks and type 6 punctuation marks are defined as break points. When characters defined as exclusion symbols are included in the program title, the program title is corrected by excluding such characters. Type 5 reading marks and type 6 punctuation marks are often used as delimiters for general purposes, so they are treated as delimiters.

In FIG. 4, type 7 bracket pairing and type 8 round bracket pairing are defined as exclusion section instruction symbols. When an excluded section instruction symbol is included in the program title, the program title is corrected by excluding such characters. Pairing of type 7 brackets and pairing of type 8 round brackets is used as a symbol indicating a specific section in order to distinguish the title name from the subtitle name or to distinguish the title name from the supplementary explanation. Since it is often displayed, it is treated as an exclusion section instruction symbol. If there is a character sandwiched between the exclusion section instruction symbols, whether or not to delete this character is determined based on whether or not this character is a valid character string for determining program consistency. Is determined.
For example, in the case where a character sandwiched between such section designation symbols is a subtitle name or supplementary matter of a program title, it often becomes an obstacle when determining the matching of program titles. In such a case, it is possible to track the program by limiting the characters to a valid character string by deleting the characters sandwiched between the exclusion section instruction symbols from the program title.
However, for example, as in the case where the program title is “Korean drama“ Spring Sonata ””, the character sandwiched between the exclusion section instruction symbols may be the title name of the program title. If the characters sandwiched between the exclusion section instruction symbols are deleted, an important title name is excluded at the time of program tracking, so that the program tracking fails.
Therefore, in the first embodiment, attention is paid to the fact that the program title naming rules are similar between broadcast stations (broadcast channels) and time zones, and each broadcast station and time zone are sandwiched between exclusion section instruction symbols. It is characterized by changing the handling of characters. With this configuration, it becomes possible to perform program tracking with high accuracy with a small amount of calculation.

Returning to the description of FIG. 1, the structure definition information 123 indicates an arrangement position where a predetermined exclusion section instruction symbol is arranged in a program title, and a program structure type for identifying the arrangement position. FIG. 5 is a schematic diagram illustrating an example of the data structure of the structure definition information 123. As shown in FIG. 5, the structure definition information 123 is information in a table format having a program structure type field 123a and a program title structure example field 123b.
The program structure type column 123a stores a program structure type for identifying the arrangement position where the excluded section instruction symbol is arranged. The structure of the program title is identified according to the arrangement position where the excluded section instruction symbol is arranged (including the case where the excluded section instruction symbol is not present). In other words, the program structure type can identify the arrangement position where the excluded section instruction symbol is arranged and also the structure of the program title.
The program title structure example column 123b indicates the arrangement position of the excluded section instruction symbol in the program structure type shown in the program structure type column 123a.
For example, in the program structure type # A1, one of the excluded section instruction symbols (here, the excluded section instruction symbol indicating the start of the section) is arranged in the middle of the program title, and one of the excluded section instruction symbols is provided at the end of the program title. The structure of the program title in which one (excluded section instruction symbol indicating the end of the section) is arranged is shown.
In the program structure type # A2, one of the excluded section designation symbols (here, the excluded section designation symbol indicating the start of the section) is arranged at the beginning of the program title, and one of the excluded section designation symbols (in the middle of the program title ( Here, the structure of the program title in which an excluded section instruction symbol indicating the end of the section is arranged is shown.
In the program structure type # A3, one of the excluded section designation symbols (here, the excluded section designation symbol indicating the start of the section) is arranged at the beginning of the program title, and one of the excluded section designation symbols ( Here, the structure of the program title in which an excluded section instruction symbol indicating the end of the section is arranged is shown.
The program structure type # A4 indicates the structure of the program title in which the excluded section instruction symbol is arranged other than the program structure types # A1 to # A3 (including the case where there is no excluded section instruction symbol).

  Specifically, the program structure type # A1 indicates that the program title has a structure of “Spring Sonata“ Third Episode: Farewell with Sonin ”. It indicates that the title has a structure of ““ Korean Drama ”Spring Sonata.” Program structure type # A3 indicates that the program title has a structure of “Super Wide Show”. In the first embodiment, an example in which the structure of the program title is roughly divided into the four patterns has been described. However, a more detailed structure may be used.

  If the excluded section instruction symbol has a nested structure, the program title structure is determined by the outermost excluded section instruction symbol pair. For example, when the program title is configured as “title name“ subtitle name (number of stories) ””, a pair of parentheses “ () ”Is included. In this case, the outer exclusion section indicating symbol, the pair of brackets“ “” ”is valid, and the pair of parentheses“ () ”is ignored. The program structure type of the program title is # A1.

  In addition, there may be a plurality (two or more) of excluded section instruction symbols in the program title. For example, when the program title is configured as “title name“ subtitle name ”(number of stories)”, the program title is not included in the program structure types # A1 to # A3. The program structure type is # A4.

  Returning to the description of FIG. 1, the correction rule 124 indicates a rule for correcting the program title. FIG. 6 is a schematic diagram illustrating an example of the data structure of the correction rule 124. As illustrated in FIG. 6, the correction rule 124 includes valid character determination information 160, correction rule application character string information 161, and application rule information 162.

The valid character determination information 160 indicates a valid character position that is a position where a valid character is arranged in the program title for each combination of the program structure type and the valid character application rule. In other words, the valid character determination information 160 indicates which part of the program title is used as a valid character when the program title is corrected. As shown in FIG. 6, the valid character determination information 160 is information in a table format including a program structure type column 160a and a valid character application rule line 160b.
Each column of the program structure type column 160 a indicates the structure type of the program title determined based on the structure definition information 123.
Each line of the effective character application rule line 160 b indicates an effective character application rule determined based on the application rule information 162.
And the effective character position at the time of correcting a program title is stored in the column specified by the program structure type column 160a and the effective character application rule row 160b. Here, in the valid character determination information 160 shown in FIG. 6, the position indicated by “G” is a valid character in the column specified by the program structure type column 160a and the valid character application rule row 160b. , “N” indicates an invalid character. For example, when “GGG“ NNN ”” or ““ NNN ”GGG” is stored in this field, the characters at positions not sandwiched by the exclusion section instruction symbols in the program title are valid characters. On the other hand, when “NNN“ GGG ”” or ““ GGG ”NNN” is stored in this column, the character at the position sandwiched by the exclusion section instruction symbols in the program title becomes a valid character. Furthermore, when “GGG“ GGG ”” or ““ GGG ”GGG” is stored in this field, the position between the excluded section instruction symbol and the excluded section instruction symbol in the program title is included. Characters at positions that are not are valid characters.
For example, if the effective character application rule 160b of the program corresponding to the program title “Korean drama“ Spring Sonata ”” is defined as # B2, the program structure type 160a of this program title is # A1. Therefore, the character between the excluded section instruction symbols becomes a valid character that is valid as the program title by the valid character determination information 160. As a result, the modified title that is the modified program title is “spring sonata”, Character strings that hinder the coincidence determination at the time of program tracking are excluded.

  The correction rule application character string information 161 indicates a specific character string that should be included in the program title in order to make correction according to the correction rule 124. For example, the correction rule applied character string information 161 indicates a character string indicating a general genre name or a special feature such as “drama”, “special”, “sports”, “theater”, and “golden”. When such a character string is included in the program title, there is a high possibility of erroneous detection by simply excluding the character string in the section indicated by the excluded section instruction symbol. As a specific example, if the program title includes such a character string such as “Saturday Special“ Mystery of the Earth ”and“ Korean Drama “Spring Sonata” ”, it is simply an exclusion section instruction symbol. If the section indicated by is excluded, there is a high possibility that program tracking will fail.

  The application rule information 162 indicates an effective character application rule that is an arrangement rule of effective characters in a program title in a combination of a broadcasting station (broadcast channel) and a time zone. FIG. 7 is a schematic diagram illustrating an example of the data structure of the application rule information 162. As shown in FIG. 7, the application rule information 162 is information in a table format including a channel column 160a and a time zone row 162b.

Each column of the channel column 160a stores a channel number for each broadcast type.
Each row of the time zone row 162b stores a predetermined time zone.
In the column specified by the channel column 160a and the time zone row 162b, the effective characters in the program title in the time zone specified by the time zone row 162b of the broadcast channel specified by the channel column 160a are displayed. A valid character application rule indicating a placement rule is stored.
For example, in FIG. 7, the effective character application rule # B2 is selected for the recording reservation starting at 11:00 for the BS4 CH4.

  FIG. 7 shows an example in which information is held in units of 2 hours as the predetermined time, but other time units such as 1 hour or 30 minutes may be used. Further, in the first embodiment, the application rule information 162 holds information on the effective character application rule for every time zone and every channel. For example, the default of the effective character application rule is stored in the system control unit 130. The setting may be retained, and only the valid character application rule corresponding to the exceptional time zone and channel may be recorded as the application rule information. In this way, the size of the application rule information 162 can be reduced.

Returning to the description of FIG. 1, the system control unit 130 controls processing in the program reservation device 100. As illustrated, the system control unit 130 includes an overall control unit 131, a structure determination unit 132, a correction unit 133, and a similarity determination unit 134.
The overall control unit 131 comprehensively controls processing in the program reservation device 100. For example, the overall control unit 131 controls the stream processing unit 110 to receive digital broadcast, record a program, and play back the program. Further, the overall control unit 131 instructs the stream processing unit 110 to perform recording on the program stream specified by the program tracking, for example, to record in the program recording unit 114. Upon receiving such an instruction, the stream processing unit 110 executes processing according to the instruction.
The structure determination unit 132 detects the position where the predetermined exclusion section instruction symbol is arranged in the program title of the reservation source program or the search target program, and based on the structure definition information 123, the program structure type Is identified.
The correction unit 133 corrects the program title based on the correction rule 124 at the time of program tracking. Further, the correcting unit 133 corrects the program title based on the excluded character information 122.

  The similarity determination unit 134 calculates a program similarity for verifying program matching from the program title corrected by the correction unit 133. The similarity determination unit 134 in the first embodiment is described as verifying the program matching from the program title, but the genre information and time information (program start time, program length) are combined. May be verified.

  In addition, although the structure determination part 132, the correction part 133, and the similarity determination part 134 have shown the example comprised by the firmware etc. in the system control part 130, the hardware which has the said function may be sufficient. The structure determination unit 132, the correction unit 133, and the similarity determination unit 134 may be configured as a block in which these functions are integrated, for example, a program tracking unit.

The timer unit 140 measures time.
The operation unit 150 receives an operation input.

Here, the flow of basic timer recording processing in the first embodiment will be described.
First, the user performs recording reservation setting via the operation unit 150.
For example, the program information acquisition unit 113 acquires program information such as an electronic program guide superimposed on the digital broadcast. This program information is displayed on the display device 140 via the stream control unit 112 and the program playback unit 115 under the instruction of the system control unit 130. The user performs recording reservation setting by selecting a program to be recorded from the program information displayed on the display device 140. Then, the system control unit 130 extracts the broadcast date / time, broadcast channel, program title, and the like of the selected program based on the program information, generates the reserved program record 121a, and registers it in the reserved program information 121.

  Note that the program information acquisition unit 113 may extract and decode the latest program information from the broadcast receiving unit 111 after receiving an instruction to display the program information from the user via the operation unit 150. The program information acquisition unit 113 extracts and decodes the latest program information from the broadcast reception unit 111 at predetermined intervals, and stores the program information in a memory such as a non-illustrated nonvolatile memory in the program information acquisition unit 113. You may memorize | store and output the program information memorize | stored in memory, when there exists an instruction | indication from a user. With this configuration, program information can be provided immediately when there is an instruction to display program information from the user.

  Then, the overall control unit 131 monitors the current time measured by the time measuring unit 140, and when the broadcast start date and time of the reserved program registered in the reserved program information 121 arrives, the overall control unit 131 causes the stream processing unit 110 to By performing the control, the recording process is executed.

  In the recording process, the overall control unit 131 first causes the broadcast receiving unit 111 to select a channel so that the channel of the program reserved for recording is selected. By selecting a channel in the broadcast receiving unit 111, the digital broadcast stream information of the channel that has been encoded and compressed is recorded in the program recording unit 114 via the stream control unit 112. Note that the program storage unit 114 stores stream information and recorded program management information of a program reserved for recording.

Next, the flow of basic reproduction processing in the first embodiment will be described.
When receiving an instruction to reproduce an arbitrary program from the operation unit 150, the overall control unit 131 identifies a file that is stream information indicating the program from the recorded program management information recorded in the program recording unit 114. Then, in accordance with an instruction from the overall control unit 131, the stream information recorded in the program recording unit 114 is read and supplied to the program reproduction unit 115 via the stream control unit 112. In the program reproducing unit 115, the encoded and compressed video / audio stream is decoded into an output video signal and an output audio signal, and these signals are sent to the display device 140.

FIG. 8 is a flowchart showing program tracking in the first embodiment.
First, the overall control unit 131 acquires the reserved program record 121 a of the reservation source program from the reserved program information 121. The overall control unit 131 acquires the broadcast type 121b, the channel number 121c, the broadcast start date and time 121d, the broadcast end date and time 121e, the program title 121f, the genre information 121g, and the day of week mode 121h from the acquired reserved program record 121a. (S10).

  Next, the structure determination unit 132 specifies the program structure type of the program title 121f of the reservation source program based on the structure definition information 123 (S11). For example, the structure determination unit 132 determines whether or not a predetermined exclusion section instruction symbol is included in the program title of the reservation source program. Then, when such an excluded section instruction symbol is included, the structure determining unit 132 specifies a position where such an excluded section instruction symbol is arranged in the program title. The structure determination unit 132 refers to the structure definition information 123 and identifies the program structure type corresponding to the identified position. Specifically, when the program title is “Korean drama“ Spring Sonata ””, the program structure type is specified as # A01.

  Next, the correcting unit 133 determines whether to apply the correction rule 124 to the program title 121f of the reservation source program (S12). For example, the correction unit 133 indicates that “the program configuration type of the program title of the reservation source program is # A1, # A2, # A3” and “the correction rule application character string information 161 is added to the program title of the reservation source program”. When the specific character string indicated by “is included”, it is determined that the correction rule 124 is applied. And when the correction part 133 determines that the correction rule 124 is applied (S12: Yes), it progresses to the process of step S13, and when it determines with not applying the correction rule 124 (S12: No), step The process proceeds to S15.

  In step S13, the correction unit 133 refers to the correction rule 124 stored in the storage unit 120, and is effective from the broadcast time and broadcast channel of the reservation source program and the program structure type of the program title of the reservation source program. Get the character position. For example, the correction unit 133 refers to the application rule information 162 of the correction rule 124, and identifies the effective character application rule from the broadcast time of the reservation source program and its broadcast channel. Specifically, in the case where the reservation source program is broadcast in the time zone of 13: 0 to 13:30 in 6 channels of BS digital broadcasting, the correcting unit 133 refers to the application rule information 162, The valid character application rule # B2 is specified. Then, the correcting unit 133 refers to the effective character determination information 160 of the correction rule 124, so that the effective character is determined from the program structure type specified in step S11 and the effective character application rule specified from the application rule information 162. The position can be specified. Specifically, when the program title of the reservation source program is “Korean drama“ Spring Sonata ””, it is determined in step S11 that the program structure type is # A1, so if the effective character application rule is # B2 The valid character determination information 160 can specify that the valid character position is a position sandwiched between exclusion section instruction symbols.

  Then, the correcting unit 133 corrects the program title of the reservation source program based on the valid character position specified in step S13 (S14). Specifically, if the program title of the reservation source program is “Korean drama“ Spring Sonata ”” and the position of the valid character is sandwiched between the exclusion section instruction symbols, the program title “Spring Sonata” In addition, the correction unit 133 includes the specific character indicated by the excluded character information 122 stored in the storage unit 120 in the character at the effective character position specified in this way. The program title of the reservation source program modified in step S14 is referred to as a modified reserved program title.

  On the other hand, if it is determined in step S12 that the correction unit 133 does not apply the correction rule (S12: No), the process proceeds to step S15. In step S <b> 15, when the program title of the reservation source program includes the excluded section instruction symbol indicated by the excluded character information 122 stored in the storage unit 120, the correcting section 133 includes the excluded section instruction symbol. Is deleted, and when the specific character indicated by the excluded character information 122 is included, the specific character is excluded from the program title of the reservation source program.

  Next, the overall control unit 131 is a predetermined time before the broadcast start time of the reservation source program, for example, one hour before, in the same broadcast channel as the broadcast channel specified by the broadcast type 121b and the channel number 121c of the reservation source program. Select the first program that starts broadcasting after that, in other words, the program that starts broadcasting earlier than one hour before the broadcasting start time of the reserved program, as the search target program To do. Then, the overall control unit 131 acquires information corresponding to the search target program from the program information as individual program information (S16). For example, the individual program information includes the broadcast type, channel number, broadcast start date / time, broadcast end date / time, and program title of the search target program.

  Next, the overall control unit 131 determines whether or not acquisition of the individual program information of the search target program has succeeded (S17). For example, the overall control unit 131 can acquire individual program information, and when the broadcast start time of the search target program is within a predetermined time after the broadcast start time of the reservation source program, for example, within 1 hour, It is determined that the individual program information of the search target program has been successfully acquired. The overall control unit 131 proceeds to the process of step S20 when acquisition of the individual program information of the search target program is successful (S17: Yes), and proceeds to the process of step S26 when the acquisition fails (S17: No). Proceed to processing.

  In step S <b> 18, the structure determination unit 132 specifies the program structure type of the program title of the search target program based on the structure definition information 123. The process here is the same as the process of step S11 mentioned above.

  Next, the correcting unit 133 determines whether to apply the correction rule 124 to the program title of the search target program (S19). The process here is the same as the process of step S12 mentioned above. If the correction unit 133 determines that the correction rule 124 is to be applied (S19: Yes), the process proceeds to step S20, and if it is determined that the correction rule 124 is not to be applied (S19: No), the step The process proceeds to S22.

  In step S20, the correction unit 133 refers to the correction rule 124 stored in the storage unit 120, and is effective from the broadcast time and broadcast channel of the search target program and the program structure type of the program title of the search target program. Get the character position. The process here is the same as the process of step S13 mentioned above. Here, the effective character position is acquired from the broadcast time and broadcast channel of the search target program and the program structure type of the program title of the search target program. For example, the effective character position (reserved in step S13) is acquired. You may use the effective character position acquired corresponding to the original program.

  Then, the correcting unit 133 corrects the program title of the search target program based on the valid character position specified in step S20 (S21). The process here is the same as the process of step S21 mentioned above. The program title of the search target program modified in step S21 is referred to as a modified broadcast program title.

  On the other hand, if it is determined in step S19 that the correction unit 133 does not apply the correction rule (S19: No), the process proceeds to step S22. In step S <b> 22, when the program title of the search target program includes the excluded section instruction symbol indicated by the excluded character information 122 stored in the storage unit 120, the correcting unit 133 includes the excluded section instruction symbol. In addition to deleting the character between the characters, if the specific character indicated by the excluded character information 122 is included, the specific character is excluded from the program title of the search target program.

  Next, the similarity determination unit 134 calculates a program similarity index indicating the degree of matching between the reservation source program and the search target program (S23). The process here will be described in detail with reference to FIG. 9 described later. Basically, the determination is made based on the number of matching characters in the title name. To do.

  Next, when the program similarity index calculated in step S23 is “0” or more, in other words, when there is a matching element (character), the overall control unit 131 includes the search target program in the matching program candidate list. The individual program information and the program similarity index are registered in association with each other (S24). If the program similarity index is 0, the overall control unit 131 does not perform registration in the matching program candidate list. Although not shown, it is assumed that the matching program candidate list is stored in the storage unit 120, for example.

  Next, the overall control unit 131 selects the next program in time as the search target program, and acquires information corresponding to the selected search target program from the program information as individual program information (S25). . Then, the overall control unit 131 returns to the process of step S17.

  On the other hand, if the overall control unit 131 determines in step S17 that acquisition of the individual program information of the search target program has failed (S17: No), the process proceeds to step S26.

  In step S26, the overall control unit 131 determines whether there is a program in which individual program information is registered in the matching program candidate list. When there is a program in which individual program information is registered (S26: Yes), the overall control unit 131 proceeds to the process of step S27, and when there is no such program (S26: No), The process proceeds to step S29.

  In step S27, the overall control unit 131 identifies the largest program similarity index among the program similarity indices registered in the matching program candidate list, and whether or not the identified program similarity index is equal to or greater than a predetermined threshold value. Determine whether. When the specified program similarity index is equal to or greater than the predetermined threshold (S27: Yes), the overall control unit 131 proceeds to the process of step S28, and when the specified program similarity index is less than the predetermined threshold ( In step S27: No), the process proceeds to step S29.

  In step S28, the overall control unit 131 moves the reservation source program in the matching program candidate list, the program specified by the individual program information corresponding to the program similarity index specified in step S27, that is, the maximum program similarity index. It is determined that the program has been released. In addition, when there are a plurality of programs corresponding to the maximum program similarity index, it is assumed that the program whose reservation source program has moved is a program closer to the program start time of the reservation source program, for example, a predetermined rule. Just judge. In addition, based on at least one of the genre and the program length, the program to which the reservation source program has moved may be determined from a plurality of programs corresponding to the maximum program similarity index. The overall control unit 131 can record the detected program by updating the information of the reserved program record 121a acquired in step S10 to the information of the program determined in step S28. Become.

  On the other hand, in step S29, the overall control unit 131 determines that a program in which the reservation source program has been moved is not detected. In this way, by not making a program whose program similarity index is less than a predetermined threshold value as a program in which the reservation source program has moved, a misdetected program is recorded as a program tracking result, and the user is not distrusted. .

  In the flowchart of FIG. 8, the program range to be searched is set to be within one hour before and after the broadcast start time of the reservation source program (S16, S17), but is limited to such a range. Is not to be done. An arbitrary time range can be set as the range of the program to be searched. For example, the program range to be searched may be set to start broadcasting within 2 hours before and after the broadcast start time of the reservation source program, and within 3 hours before and after the broadcast start time of the reservation source program. Broadcasting may be started.

  Further, in the flowchart of FIG. 8, in step S14 and step S21, a process of excluding a specific character indicated by the excluded character information 122 from the program title is performed, but such a process may not be performed. Furthermore, in the flowchart of FIG. 8, the processes of steps S15 and S22 are performed, but such processes may not be performed.

FIG. 9 is a flowchart showing a program similarity index calculation process in the first embodiment. This flowchart explains step S23 of FIG. 8 in detail.
First, the similarity determination unit 134 acquires a corrected program title of the reservation source program (S30). The program title here is the one modified in step S14 or step S15 in FIG.
Next, the similarity determination unit 134 acquires a corrected program title of the search target program (S31). The program title here has been corrected in step S21 or step S22 of FIG.

  Next, the similarity determination unit 134 compares the program title after modification of the reservation source program with the program title after modification of the search target program, and specifies the number of matching characters. Then, the similarity determination unit 134 calculates the program similarity index by multiplying the number of matching characters by “10”, assuming that one matching character is 10 points (S32). For example, if the program title after modification of the reservation source program is “hobby music” and the program title after modification of the search target program is “hobby gardening”, since the three characters match, the program The similarity index is 30 points.

  As described above, according to the first embodiment, when the program is tracked, the program title can be corrected based on the effective character application rule suitable for each channel and time zone. Unnecessary characters can be deleted with high accuracy. For this reason, it is possible to reduce the amount of calculation at the time of program matching determination and to perform highly accurate program tracking.

Embodiment 2. FIG.
In the second embodiment, when calculating the program similarity index, determination is made from a plurality of determination elements such as genre information, program start time and program length in addition to the program title. The second embodiment is characterized in that weighting is performed for each determination element in consideration of the reliability of the correction process for the program title shown in the first embodiment. With this configuration, even when the reliability of the program title correction process is low, the program tracking accuracy can be kept high.

  As shown in FIG. 1, the program reservation apparatus 200 includes a stream processing unit 110, a storage unit 220, a system control unit 230, a timer unit 140, and an operation unit 150. The program reservation apparatus 200 according to the second embodiment is different from the program reservation apparatus 100 according to the first embodiment in the storage unit 220 and the system control unit 230.

  The storage unit 220 stores reserved program information 121, excluded character information 122, structure definition information 123, and correction rules 224. The storage unit 220 in the second embodiment is different from the storage unit 120 in the first embodiment in the contents of the correction rule 224.

  FIG. 10 is a schematic diagram illustrating an example of the data structure of the correction rule 224. As illustrated in FIG. 10, the correction rule 224 includes valid character determination information 160, correction rule application character string information 161, application rule information 162, and weighting coefficient information 263. The correction rule 224 in the second embodiment is different from the correction rule 124 in the first embodiment in that it further includes weighting coefficient information 263.

As shown in FIG. 10, the weighting coefficient information 263 is information in a table format having a weighting coefficient column 263a and a valid character application rule line 263b.
The weighting coefficient column 263a includes a program title column 263a-1, a genre column 263a-2, and a time column 263a-3.
Each line of the effective character application rule line 263b indicates an effective character application rule determined based on the application rule information 162.
In the column specified by the program title column 263a-1, the genre column 263a-2, the time column 263a-3, and the effective character application rule row 263b, the weighting coefficient for calculating the program similarity index is displayed. A value is stored. The larger the weighting coefficient, the greater the influence on the calculation of the program similarity index, and the larger the value of the program similarity index. The weighting coefficient stored in the program title column 263a-1 is a program title weighting coefficient for weighting the program title similarity index calculated from the program title. The weighting coefficient stored in the genre column 263a-2 is a genre weighting coefficient for weighting the genre similarity index calculated from the genre information. The weighting coefficient stored in the time column 263a-3 is a time weighting coefficient for weighting the time similarity index calculated from the broadcast start time.
In the weighting coefficient information 263, when the effective character application rule 263b is # B1 and # B2, it is determined that the reliability of the program title correction process is high, and therefore the value of the program title weighting coefficient is large. Is set. On the other hand, when the valid character application rule 263b is # B3, it is determined that the reliability of the program title correction process is low, and therefore the genre weighting coefficient and the time weighting coefficient are set large.

  Returning to the description of FIG. 1, the system control unit 230 includes an overall control unit 231, a structure determination unit 132, a correction unit 133, and a similarity determination unit 234. The system control unit 230 according to the second embodiment is different from the system control unit 130 according to the first embodiment in processing performed by the overall control unit 231 and the similarity determination unit 234.

The overall control unit 231 performs substantially the same processing as the overall control unit 131 in the first embodiment, but in the second embodiment, when calculating the program similarity index, in addition to the program title, genre information and broadcasting Since the start time is also used, it differs from the overall control unit 131 in the first embodiment in that such information is acquired from the program information.
The similarity determination unit 234 determines a program similarity index value for verifying program matching from the program title modified by the modification unit 133, the genre information acquired by the overall control unit 231 and the broadcast start time. calculate.

FIG. 11 is a flowchart showing program tracking in the second embodiment.
The process from step S10 to step S15 in FIG. 11 is the same as the process from step S10 to step S15 in FIG. Further, the processing from step S17 to S22 in FIG. 11 is the same as the processing from step S17 to S22 in FIG. Further, the processing from step S24 to S29 in FIG. 11 is the same as the processing from step S24 to S29 in FIG.
In step S46, the overall control unit 231 is a predetermined time before the broadcast start date and time of the reservation source program on the same broadcast channel as the broadcast channel specified by the broadcast type 121b and the channel number 121c of the reservation source program, for example, 1 The program to be searched for is the first program that starts broadcasting after the time, in other words, the program that starts broadcasting earlier than one hour before the broadcasting start time of the reserved program. Choose as. Then, the overall control unit 231 acquires information corresponding to the search target program from the program information as individual program information. In the second embodiment, the individual program information includes genre information in addition to the broadcast type, channel number, broadcast start date / time, broadcast end date / time and program title of the search target program.

  In step S47, the similarity determination unit 234 refers to the weighting coefficient information 263 stored in the storage unit 220, and the program title column 263a-1 corresponding to the valid character application rule 263b specified in step S20, The values of the respective weighting coefficients stored in the genre column 263a-2 and the time column 263a-3 are acquired. For example, when the effective character application rule 263b is # B1, the program title weighting coefficient is “2”, the genre weighting coefficient is “1”, and the time weighting coefficient is “1”.

  In step S48, the similarity determination unit 234 calculates a program similarity index indicating the degree of coincidence between the reservation source program and the search target program. This process will be described in detail with reference to FIG.

FIG. 12 is a flowchart showing a program similarity index calculation process according to the second embodiment. This flowchart explains step S48 of FIG. 11 in detail.
First, the similarity determination unit 234 acquires the corrected program title, genre information, and broadcast start date and time of the reservation source program (S50).
Next, the similarity determination unit 234 acquires the corrected program title, genre information, and broadcast start date and time of the search target program (S51).

  Next, the similarity determination unit 234 compares the program title after modification of the reservation source program with the program title after modification of the search target program, and specifies the number of matching characters. Then, the similarity determination unit 234 calculates a program title similarity index with the matched character as 10 points (S52).

  Next, the similarity determination unit 234 calculates a genre similarity index from the degree of coincidence between the genre indicated by the genre information of the reservation source program and the genre indicated by the genre information of the search target program (S53). For example, since it is possible to set up to three genres in the program information, the similarity determination unit 234 calculates the genre similarity index as 10 points each time one genre matches. Therefore, the maximum value of the genre similarity index is 30 points.

  Next, the similarity determination unit 234 calculates a time similarity index from the degree of divergence between the broadcast start time indicated by the broadcast start date and time of the reservation source program and the broadcast start time indicated by the broadcast start date and time of the search target program. Calculate (S54). In the second embodiment, since the program whose search start time is within the range of 1 hour before and after the start time of the reservation source program is set as the search target program, it is between 0 and 10 points based on the degree of deviation. To specify the time similarity index. Specifically, if the broadcast start time of the reservation source program is the same as the broadcast start time of the search target program, the time similarity index is 10 points. If the time difference between the broadcast start time of the reservation source program and the broadcast start time of the search target program is greater than 0 minutes and within 30 minutes, the time similarity index is 5 points. Furthermore, if the time difference between the broadcast start time of the reservation source program and the broadcast start time of the search target program is greater than 30 minutes and within 60 minutes, the time similarity index is 0 points.

Next, the similarity determination unit 234 multiplies the program title weighting coefficient acquired in step 47 of FIG. 11 by the program title similarity index specified in step S52 and the genre similarity index specified in step S53. The program similarity index is obtained by summing the value obtained by multiplying the genre weighting coefficient acquired in step 47 in FIG. 11 and the value obtained by multiplying the time similarity index specified in step S54 by the time weighting coefficient acquired in step S47 in FIG. A formula for calculating is generated (S55). For example, when the program similarity index is PSN, the program title similarity index is NSN, the program title weighting coefficient is NC, the genre similarity index is JSN, the genre weighting coefficient is JC, the time similarity index is TSN, and the time weighting coefficient is TC, The formula generated in step S55 is as shown in the following formula (1).
PSN = NSN × NC + JSN × JC + TSN × TC (1)
For example, the program title similarity index is 50 points, the genre similarity index is 20 points, the time similarity index is 10 points, the program title weighting coefficient is “2.0”, the genre weighting coefficient is “1.5”, and the time weighting coefficient Is “1.0”, the equation (1) becomes the following equation (2).
PSN = 50 × 2.0 + 20 × 1.5 + 10 × 1.0 (2)
In addition, when it becomes No in step S19 of FIG. 11, the process of step S47 is not performed. In such a case, the program title weighting coefficient, the genre weighting coefficient, and the time weighting coefficient are all the same value, For example, “1.0” may be set.

  Then, the similarity determination unit 234 calculates a program similarity index using the formula generated in step S55 (S56). For example, when the formula generated in step S55 is the formula (2), the program similarity index is “140” points.

  As described above, in the second embodiment, even when the reliability of the program title correction process is low, the program tracking accuracy can be kept high by changing the value of the weighting coefficient.

Embodiment 3 FIG.
In the third embodiment, the correction rule 124 is updated. In the third embodiment, by obtaining the correction rule 124 from the digital broadcast wave, the correction rule 124 is automatically updated even when the program title naming rule changes, such as when there is a change in program organization. Can do.

  FIG. 13 is a block diagram schematically showing a program reservation apparatus 300 according to the third embodiment. The program reservation apparatus 300 includes a stream processing unit 110, a storage unit 120, a system control unit 330, a time measuring unit 140, and an operation unit 150. The program reservation apparatus 300 according to the third embodiment is different from the program reservation apparatus 100 according to the first embodiment in the system control unit 330.

  The system control unit 330 includes an overall control unit 131, a structure determination unit 132, a correction unit 133, a similarity determination unit 134, and a correction rule setting unit 335. The system control unit 330 according to the third embodiment is different from the system control unit 130 according to the first embodiment in that a correction rule setting unit 335 is further provided.

  The correction rule setting unit 335 acquires the new correction rule 124 from the stream processing unit 110 when the new correction rule 124 is superimposed on the digital broadcast wave and transmitted. For example, the correction rule setting unit 335 can extract and decode such a correction rule 124 by controlling the stream processing unit 110. Then, when the new correction rule 124 is acquired, the correction rule setting unit 335 updates the existing correction rule 124 stored in the storage unit 120 to the new correction rule.

  It should be noted that the update timing of the correction rule 124 is preferably set to a timing at which the program reservation device 300 is activated so as not to be confused by changing the determination criteria during system operation.

  As described above, according to the third embodiment, the modification rule 124 can be updated even if the program title naming rule is changed. Therefore, the program reservation device 300 uses the appropriate modification rule 124 to Program tracking can be performed.

  In the third embodiment, the correction rule setting unit 335 updates the existing correction rule based on the new correction rule 124 superimposed on the broadcast wave. A new correction rule may be acquired and an existing correction rule may be updated by an operation performed through the network. Further, the correction rule setting unit 335 generates a new correction rule 124 by learning the program title naming rule based on the program information acquired by the program information acquisition unit 113, and updates the existing correction rule. You may make it do.

  In the third embodiment, the correction rule 124 is described as being held in the rewritable storage unit 120. However, similar information is included in the execution program that exists in the read-only area of the program reservation device 200. May be stored in advance. With such a configuration, the update of the correction rule 124 can be automatically applied when the execution program is updated from the broadcast reception.

  Furthermore, although the correction rule setting unit 335 is illustrated as an example configured with firmware or the like in the system control unit 330, it may be hardware having the function. Further, all or any combination of the structure determination unit 132, the correction unit 133, the similarity determination unit 134, and the correction rule setting unit 335 can be used as one function unit.

  Further, the third embodiment is configured by adding a correction rule setting unit 335 to the program reservation device 100 according to the first embodiment, but the correction rule setting unit is added to the program reservation device 200 according to the second embodiment. You may comprise by adding 335.

In the second embodiment, the program similarity index is calculated by the above equation (1), but is not limited to the equation (1). For example, the program title similarity index, the genre similarity index, and the time similarity If any index is a variable, two variables are not changed, and one variable is increased or decreased, any formula can be used so long as the value of the program similarity index increases or decreases in accordance with the increase or decrease of this one variable. It may be.
In Embodiment 2, the similarity determination unit 234 multiplies the program title similarity index by the program title weighting coefficient, the genre similarity index by the genre weighting coefficient, and the time similarity index by the time weighting coefficient. The program similarity index may be calculated by adding any combination of the obtained values.
Further, in the first embodiment, the similarity determination unit 134 calculates the program similarity index by adding any combination of the program title similarity index, the genre similarity index, and the time similarity index described in the second embodiment. May be.

  Although the program reservation devices 100, 200, and 300 according to the first to third embodiments described above are recording and playback devices, the program reservation device 100 is a broadcast program such as a television receiver. It may be a broadcast receiving device such as a display device and a broadcast tuner. In such a case, the process for the stream of the program specified by the program tracking is not limited to the recording, and a predetermined process such as reproduction or output to the outside may be performed. Therefore, in the first to third embodiments described above, the target of program tracking is not only the program reserved for recording but also the program reserved for performing other processing such as playback reservation. May be.

  In the embodiment described above, the case where a pair of brackets is included in the program title has been described as an example, but instead of the pair of brackets, a pair of gumme (<>), a pair of brackets ( []), Brace pairs ({}) or quote pairs ("" or "").

  100: 200, 300: Program reservation device, 110: Stream processing unit, 111: Broadcast receiving unit, 112: Stream control unit, 113: Program information acquisition unit, 114: Program storage unit, 115: Program playback unit, 120, 220 : Storage unit, 121: reserved program information, 122: excluded character information, 123: structure definition information, 124, 224: correction rule, 130, 230, 330: system control unit, 131, 231: overall control unit, 132: structure Determination unit, 133: correction unit, 134, 234: similarity determination unit, 335: correction rule setting unit, 140: timing unit, 150: operation unit.

Claims (20)

Application rule information indicating effective character application rules for each combination of broadcast time and broadcast channel, a program structure type indicating an arrangement position of a predetermined symbol indicating a section in a program title, and the effective character application rule For each combination, a correction rule including valid character determination information indicating a valid character position that is a position where a valid character is arranged in the program title, and the program title, broadcast date and time and broadcast channel of the reserved program Including a reserved program information, a storage unit for storing,
A digital broadcast wave is received, a stream is generated from the digital broadcast wave, a predetermined process is performed on the stream, and a program title, a broadcast date and time, and a broadcast channel of a program to be broadcasted from the stream are determined. A stream processing unit for acquiring program information including:
In each of the program title included in the reserved program information and the program title included in the program information, a structure determination unit that identifies the program structure type,
Referring to the application rule information, a combination of a broadcast time indicated by a broadcast date and time included in the reserved program information and a broadcast channel included in the reserved program information, and included in the program information A process for specifying effective character application rules corresponding to each of a combination of a broadcast time indicated by a broadcast date and time and a broadcast channel included in the program information;
A combination of the program structure type of the program title included in the reserved program information with reference to the effective character determination information, the effective character application rule specified corresponding to the reserved program information, and the program A process for specifying a valid character position corresponding to each combination of a program structure type of a program title included in the information and a valid character application rule specified corresponding to the program information, and
A character other than an effective character position specified corresponding to the reserved program information is excluded from characters included in the program title indicated by the reserved program information to generate a corrected reserved program title, and the program A correction unit that performs a process of generating a corrected broadcast program title by excluding characters other than the effective character position specified corresponding to the program information from the characters included in the program title indicated by the information;
Similarity determination for calculating a program similarity index indicating a higher value as the degree of coincidence between the reserved program and the broadcasted program is higher according to a comparison result between the modified reserved program title and the modified broadcast program title And
Among the broadcasted programs, the program having the highest program similarity index is specified as a program that matches the reserved program, and the predetermined stream is set for the stream of the program specified by the stream processing unit. A program reservation apparatus comprising: an overall control unit that performs processing. The valid character determination information includes, for each combination of the program structure type and the valid character application rule, at least one of a position corresponding to the section and a position other than the section of the program title. The program reservation apparatus according to claim 1, wherein: The correction rule further includes excluded character information indicating a specific character,
The correction unit is
When the specific character is included in the modified reserved program title, the specific character is excluded from the modified reserved program title,
3. The program reservation apparatus according to claim 1, wherein, when the specific character is included in the modified broadcast program title, the specific character is excluded from the modified broadcast program title. 4. The storage unit further stores correction rule application character string information indicating a specific character string,
The correction unit is
When the program title included in the reserved program information includes the specific character string, the modified reserved program title is generated,
The modified broadcast program title is generated when the specific character string is included in the program title included in the program information. Program reservation device. The overall control unit broadcasts on the same broadcast channel as the broadcast channel included in the reserved program information in the program information, and is broadcast start time indicated by the broadcast date and time included in the reserved program information 5. The structure determination unit, the correction unit, and the similarity determination unit perform processing for a program that starts broadcasting in a predetermined time zone including the above. 5. The program reservation apparatus according to the item. The overall control unit has a matching degree indicated by the program similarity index equal to or higher than a matching degree indicated by a predetermined threshold among the broadcast programs, and the matching degree indicated by the program similarity index is the highest. The program reservation apparatus according to any one of claims 1 to 5, wherein a high program is specified as a program that matches the reserved program. The similarity determination unit calculates the program similarity index so that the higher the number of matches between the characters included in the modified reserved program title and the characters included in the modified broadcast program title, the higher the value. The program reservation apparatus according to claim 1, wherein the program reservation apparatus is a program reservation apparatus. The reserved program information further includes genre information indicating a genre of the reserved program,
The program information further includes genre information indicating the genre of the broadcast program,
The similarity determination unit
A program title similarity index that increases as the number of matches between the characters included in the modified reserved program title and the characters included in the modified broadcast program title increases;
A genre similarity index that increases as the number of matches between the genre specified by the genre information indicated by the reserved program information and the genre specified by the genre information included in the program information increases;
A time similarity index that becomes higher as the deviation amount between the broadcast start time specified by the broadcast date and time indicated by the reserved program information and the broadcast start time specified by the broadcast date and time included in the program information is smaller;
The program reservation apparatus according to any one of claims 1 to 6, wherein the program similarity index is calculated by adding. The storage unit, for each effective character application rule, a program title weighting coefficient for weighting the program title similarity index, a genre weighting coefficient for weighting the genre similarity index, and a time for weighting the time similarity index And weighting coefficient information indicating weighting coefficient,
The similarity determination unit
With reference to the weighting coefficient information, further performing a process of specifying a program title weighting coefficient, a genre weighting coefficient, and a time weighting coefficient corresponding to the effective character application rule specified corresponding to the program information,
A value obtained by multiplying the specified program title weighting coefficient by the program title similarity index, a value obtained by multiplying the specified genre weighting coefficient by the genre similarity index, and the specified time weighting coefficient by the time similarity index. The program reservation apparatus according to claim 8, wherein the program similarity index is calculated by adding a value multiplied by. The correction rule setting part which acquires a new correction rule and updates the correction rule memorize | stored in the said memory | storage part to the said new correction rule is further provided. The any one of Claim 1 to 9 characterized by the above-mentioned. The program reservation apparatus according to the item. A broadcast receiving process of receiving a digital broadcast wave and generating a stream from the digital broadcast wave;
A program information acquisition process for acquiring program information including a program title, a broadcast date and time, and a broadcast channel of the broadcast program from the stream;
The digital broadcast wave is received and a stream is generated from the digital broadcast wave. The program title of the reserved program, the program title included in the reserved program information including the broadcast date and time, and the broadcast channel are included in the program information. A structure determination process for identifying a program structure type indicating an arrangement position of a predetermined symbol indicating a section in each program title,
For each combination of broadcast time and broadcast channel, with reference to application rule information indicating effective character application rules, the broadcast time indicated by the broadcast date and time included in the reserved program information, and included in the reserved program information A valid character application rule corresponding to each of a combination of a broadcast channel and a broadcast time indicated by a broadcast date and time included in the program information and a combination of a broadcast channel included in the program information. Processing to identify,
For each combination of the program structure type and the effective character application rule, the reserved program information is referred to effective character determination information indicating an effective character position that is a position where a valid character is arranged in a program title. A combination of the program title included in the program title and the effective character application rule specified corresponding to the reserved program information, and the program title type included in the program information, A process of identifying valid character positions corresponding to each combination with a valid character application rule identified corresponding to the program information, and
A character other than an effective character position specified corresponding to the reserved program information is excluded from characters included in the program title indicated by the reserved program information to generate a corrected reserved program title, and the program A process of generating a corrected broadcast program title by excluding characters other than the effective character position specified corresponding to the program information from the characters included in the program title indicated by the information;
Similarity determination for calculating a program similarity index indicating a higher value as the degree of coincidence between the reserved program and the broadcasted program is higher according to a comparison result between the modified reserved program title and the modified broadcast program title Process,
An overall control process for identifying a program having the highest program similarity index among the broadcasted programs as a program that matches the reserved program;
And a stream processing step of performing a predetermined process on a stream of a program that matches the reserved program. The valid character determination information includes, for each combination of the program structure type and the valid character application rule, at least one of a position corresponding to the section and a position other than the section of the program title. The program processing method according to claim 11, wherein: The correction rule further includes excluded character information indicating a specific character,
The modification process includes:
When the specific character is included in the modified reserved program title, the specific character is excluded from the modified reserved program title,
The program processing method according to claim 11 or 12, wherein when the specific character is included in the modified broadcast program title, the specific character is excluded from the modified broadcast program title. The modification process includes:
When the program title included in the reserved program information includes a specific character string indicated by the correction rule applied character string information indicating a specific character string, the corrected reserved program title is generated,
14. The modified broadcast program title is generated when the specific character string is included in a program title included in the program information. 14. Program processing method. The structure determination process, the correction process, and the similarity determination process are broadcast on the same broadcast channel as the broadcast channel included in the reserved program information and included in the reserved program information. The process according to any one of claims 11 to 14, wherein the process is performed for a program that starts broadcasting in a predetermined time zone including a broadcast start time indicated by a broadcast date and time. Program processing method. In the overall control process, the degree of coincidence indicated by the program similarity index is equal to or greater than the degree of coincidence indicated by a predetermined threshold among the broadcast programs, and the degree of coincidence indicated by the program similarity index is the highest. The program processing method according to any one of claims 11 to 15, wherein a high program is specified as a program that matches the reserved program. In the similarity determination step, the program similarity index is calculated such that the higher the number of matches between the characters included in the modified reserved program title and the characters included in the modified broadcast program title, the higher the value. The program processing method according to any one of claims 11 to 16, wherein the program processing method is characterized in that: The reserved program information further includes genre information indicating a genre of the reserved program,
The program information further includes genre information indicating the genre of the broadcast program,
The similarity determination process includes:
A program title similarity index that increases as the number of matches between the characters included in the modified reserved program title and the characters included in the modified broadcast program title increases;
A genre similarity index that increases as the number of matches between the genre specified by the genre information indicated by the reserved program information and the genre specified by the genre information included in the program information increases;
A time similarity index that becomes higher as the deviation amount between the broadcast start time specified by the broadcast date and time indicated by the reserved program information and the broadcast start time specified by the broadcast date and time included in the program information is smaller;
The program processing method according to any one of claims 11 to 16, wherein the program similarity index is calculated by adding. The similarity determination process includes:
For each effective character application rule, a program title weighting coefficient that weights the program title similarity index, a genre weighting coefficient that weights the genre similarity index, and a time weighting coefficient that weights the time similarity index A process for specifying a program title weighting coefficient, a genre weighting coefficient, and a time weighting coefficient corresponding to the effective character application rule specified corresponding to the program information, with reference to the weighting coefficient information shown,
A value obtained by multiplying the specified program title weighting coefficient by the program title similarity index, a value obtained by multiplying the specified genre weighting coefficient by the genre similarity index, and the specified time weighting coefficient by the time similarity index. The program processing method according to claim 18, wherein the program similarity index is calculated by adding a value multiplied by. 20. The method according to claim 11, further comprising a correction rule setting step of acquiring a new correction rule and updating the correction rule stored in the storage unit to the new correction rule. The program processing method according to item.

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