JP2001217787A - Method and device for generating distribution schedule - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem that the degree of satisfaction is venial for each user since the information of the same contents is distributed to a plurality of terminals according to a predetermined schedule in a broadcasting type information distributing system. SOLUTION: The present distribution of needs is calculated on the basis of user attribute information set to a user needs DB 107 and the user ID of a user inside the radio communication area of a base station at present (S53). In this case, the ID of the user inside the radio communication area at preset is transmitted from a portable terminal to the base station, ID for a prescribed time are stored in a memory 108, the ID programs distributed within fixed time in the past are acquired (S61) and while referring to registered contents attribute information, a broadcasting result distribution is calculated (S62). Continuously, the difference between the needs distribution of the user and the broadcasting result distribution is found, a program to minimize this difference is selected and the schedule of programs to be distributed later within a prescribed time is generated (S71).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for generating a distribution schedule for distributing information by broadcast from one base station to a plurality of terminals.

[0002]

2. Description of the Related Art In recent years, music, video, text information, and the like have been distributed to personal terminals through communication lines due to advances in digital processing technology, downsizing and high performance of information communication / reproduction devices, and diversification of communication media. Information distribution systems are being put to practical use. Such an information distribution system establishes one-to-one communication between an information base station and a terminal, and transmits information from the information base station to the terminal in response to a request from the terminal, or an information base station. Broadcasts the same information to multiple terminals, but the latter broadcast-type information distribution system is characterized by the fact that information can be distributed to many terminals at high speed by effectively using limited communication resources. Is advantageous. However, in the broadcast-type information distribution system, since the same information is distributed to a plurality of terminals according to a predetermined schedule, there is a problem that the degree of satisfaction varies for each user. there were. Therefore, generating a distribution schedule that allows all users to obtain as high a satisfaction as possible has been a problem of the broadcast-type information distribution system as described above. In order to solve such a problem, it is necessary to consider each user's preference when generating a distribution schedule.
Japanese Patent Application Laid-Open No. H11-75128 discloses a technique in which a user's preference is determined based on the user's past viewing history, and a program matching the preference is selected.

[0003]

However, the technique disclosed in the above publication is intended to assist a user in selecting a favorite program from programs in a predetermined distribution schedule. It does not generate the distribution schedule itself. In addition, the user's past viewing history does not always reflect the user's preference sufficiently. Therefore, by applying the program selection support technology, for example, a distribution schedule in which only selected information is sequentially arranged is generated. Even so, the user cannot be sufficiently satisfied. Also, it is difficult to satisfy various tastes of a user only with a single piece of information, and it is necessary to complement each other with a plurality of different types of information in order to truly satisfy the user. In that sense, a distribution schedule in which the information that each user is likely to like is simply arranged in order cannot provide the user with sufficient satisfaction.
Furthermore, in the broadcast type distribution system as described above, since the same information is transmitted to each user, it is impossible to give a high degree of satisfaction to all users unless the distribution schedule reflects the preferences of each user. Can not. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an information distribution method and an information distribution method that enable each user to obtain a high degree of satisfaction by one-to-many broadcast-type information distribution. Is to provide a system.

[0004]

To achieve the above object, the present invention provides a method (method) for generating a distribution schedule for distributing information by broadcast from one base station to a plurality of terminals. An attribute information setting step of previously setting attribute information for each distribution information; a preference information setting step of setting preference information on distribution information of each terminal in advance in the same manner as the attribute information; A distribution schedule generating step of generating a distribution schedule based on the attribute information for each distribution information set in the information setting step and the preference information for each terminal set in the preference information setting step. It is configured as a characteristic distribution schedule generation method. As described above, by generating a distribution schedule based on the preference information of each terminal (user), it is possible to increase user satisfaction in information distribution by one-to-many broadcasting. Further, a preference information statistical value calculating step of calculating a statistical value of the preference information of each terminal based on the preference information of each terminal set in the preference information setting step, and a distribution information set in the attribute information setting step A distribution result statistical value calculating step of calculating a statistical value of attribute information of information distributed within a predetermined time in the past on the basis of attribute information of each program; A distribution schedule may be generated based on the preference information statistical value obtained in the calculation step and the attribute information statistical value obtained in the distribution result statistical value calculation step. As described above, even if the past distribution results are taken into consideration, even relatively low-request information can be incorporated into the distribution schedule at a reasonable frequency without being ignored. More specifically, in the distribution schedule generating step, a distance between the preference information statistical value obtained in the preference information statistical value calculating step and the attribute information statistical value obtained in the distribution result statistical value calculating step. And selecting one or more pieces of information to reduce the distance based on the attribute information for each piece of distribution information set in the attribute information setting step, and generating a distribution schedule of information to be distributed within a predetermined time in the future. It is conceivable to do so.

In the preference information statistical value calculation step, if the preference information statistical value is calculated using only the preference information of a terminal capable of receiving the distribution information from the base station, the reception status is calculated. , It is possible to generate a distribution schedule focused on the user in the above, and it is possible to further increase the user's satisfaction. Here, as a method of specifying a terminal capable of receiving the distribution information from the base station, for example, a terminal capable of communicating with the base station (for example, a wireless communication system of a wireless base station in a wireless communication system) It is conceivable that the identification information is transmitted from the wireless portable terminal that has entered the area) to the base station, and the identification is performed based on the identification information received by the base station. Alternatively, the preference information itself may be transmitted together with the identification information. In this case, there is no need to search the user database on the base station side. The above-described distribution schedule generation method is suitable, for example, for an information distribution system or the like including a wireless base station having a fixed wireless communication area and a plurality of wireless portable terminals.

In order to achieve the above object, the present invention (apparatus) provides an apparatus for generating a distribution schedule for distributing information by broadcast from one base station to a plurality of terminals. Attribute information storage means for storing attribute information for each piece of information; preference information storage means for storing in advance preference information on distribution information for each terminal in the same form as the attribute information; A distribution schedule generating unit that generates a distribution schedule based on the stored attribute information for each distribution information and the preference information for each terminal stored in the preference information storage unit. It is configured as a schedule generation device. The above-mentioned distribution schedule generation method can be all carried out on the above-mentioned distribution schedule generation device.

[0007]

Embodiments and examples of the present invention will be described below with reference to the accompanying drawings to provide an understanding of the present invention. The following embodiments and examples are mere examples embodying the present invention, and do not limit the technical scope of the present invention. Here, FIG. 1 is a schematic configuration diagram of an information distribution system Z1 according to an embodiment of the present invention, FIG. 2 is an operation flow diagram of the information distribution system Z1, and FIG. FIG. 4 is a diagram showing an example of a user interface provided, FIG. 4 is an explanatory diagram of processing by a “data conversion function” of an offline encoding module 102, FIG. 5 is a flowchart showing a processing procedure of determining an information distribution schedule by a content control module 103, FIG. 6 is an explanatory diagram of a specific example of an information distribution schedule determining process performed by the content control module 103. FIG. 104 and the transmitting / receiving unit 105 Process diagram showing a flow (b) between, 8 a communication control module 104
FIG. 9 is an explanatory diagram of a specific example of processing by the “transmission frame length determining function”, FIG. 9 is an explanatory diagram showing an example of a specific procedure of received data restoration processing by the received data restoration processing module 202, and FIG. FIG. 4 is an explanatory diagram showing a specific example of a processing method by 203.

[0008] Information distribution system Z1 according to the present embodiment
As shown in FIG. 1, a base station 1 (including an example of a distribution schedule generation device according to the present invention) installed in a place where people gather, such as a station, and a wireless portable terminal 2 possessed by each user It is configured. The base station 1 wirelessly transmits digital content data (for example, news, music, etc.) such as voice and text. The wireless transmission is performed by a spread spectrum method using, for example, a 2.4 GHz band, and can be received within a range of a radius of about 50 m (hereinafter, referred to as a wireless communication area). The mobile terminal 2
Automatically receives content data transmitted from the base station 1 when passing through the wireless communication area of the base station 1, and reproduces the content data in response to a request from a user.

[A. Schematic configuration and processing content of base station 1]
As shown in FIG. 1, the base station 1 includes an offline encoding module 102, a content control module 103, a communication control module 104, and a transmission / reception unit 105. Further, the above-described units operate according to the processing flow shown in the upper diagram of FIG.
With reference to FIGS. 1, 2, and other drawings, a description will be given of the configuration and processing contents of each of the above units. (A-1. Offline encoding module 10
2) Offline encoding module 102
It has a “content management function” and a “data conversion function”. The "content management function" is a function for supporting processing such as registration of new content by a content registrant and deletion of registered content, and provides, for example, a user interface as shown in FIG. The content registrant enters a content registration screen W1 shown in FIG.
, The input / output file name of registered content, data type (information about the format of input data such as text, TwinVQ, etc.), title, summary, copyright holder,
Along with inputting (or selecting) each information of the creator by text, the user presses an "attribute definition button" to call up an attribute definition screen W2 and inputs the attribute information of the registered content (hereinafter, the information input here is collectively referred to as " Content management data ”). Here, “attribute” means “sports news”, “entertainment news”, etc.
This is a proposition regarding the content of the content.
Assume that 0 propositions are defined. The “attribute information” refers to the degree of corresponding to each of the above “attributes”. The content registrant uses the scroll bar to change the attribute information of the registered content (applicability for each attribute proposition) from 0 (not applicable) to 100 (completely applicable).
Input in 101 steps up to. After inputting the above information, pressing the “Register” button on the content registration screen W1 pops up a content confirmation screen W4, and pressing the “OK” button (S1 in FIG. 2) registers the content management information. Then, a "data conversion function" (described later) for reading content data from an input file, encoding the data into transmission data, converting the data, and storing the data in the content DB 106 is started. When the "content list" button on the content registration screen W1 is pressed, a list screen W3 of already registered contents is displayed. The desired content can be deleted on this screen (S3, S4 in FIG. 2). To end the content registration screen W1, the "end" button is pressed. At this time, if there is unsaved data, an end confirmation dialog W5 pops up.

Next, the processing by the "data conversion function" (S2 in FIG. 2) will be described with reference to FIG. First, the content data type is referenced from the content management data input from the content registration screen W1 (S31). Then, the content management data and the content data (data of the content body) are compressed and encoded, respectively (S32). As the method of compression and coding, any method corresponding to the data type (for example, TwinVQ for audio information such as music) can be used. Then, as shown in FIG. 4, the compression-encoded content management data and the content data are combined with, for example, SOD / EOD, SO
A transmission data file is generated between C / EOC and SOT / EOT (S33). Here, the above-mentioned SOD and the like are separators for detecting data breaks, and are individually defined for each data type. The obtained transmission data is stored in the content DB 106. In this embodiment, the base station 1 has the configuration including the offline encoding module 102. However, the content server 3 described in the above embodiment is provided with the offline encoding module 102, and the content server 3 generates the offline encoding module 102. The transmission data file may be appropriately transmitted to the content DB 106 of the base station 1.

(A-2. Content Control Module 10)
3) The content control module 103 performs a process of determining an information distribution schedule based on each user's needs and information distribution results (S6 in FIG. 2). This will be described with reference to FIGS. 1, 5, and 6. In the user needs DB 107, it is assumed that attribute information of favorite contents is specified in advance for each user (user of the wireless portable terminal 2). The "attribute information" here is the same as that set when the content is registered. For example, the attribute 1 of "sports information" is designated as 100, and the attribute 2 of "entertainment news" is designated as 20, for example. . FIG. 6 shows an example of the registered content attribute information of the 30 programs (contents) registered in the content DB 106 and an example of the user need attribute information registered in the user need DB 107. U in the user need attribute information shown in FIG.
The ser group indicates the number of users who have set the same attribute information. For example, attribute 1 is 30, attribute 2 is 5, ...,
5 users set attribute 10 to 20, and 4 attributes 1
.., And attribute 10 is set to 20, four users are set. Although the registered content attribute information shown in FIG. 6 is represented by an integer from 0 to 5, it is assumed that the registered content attribute information is actually set as an integer from 0 to 100 obtained by multiplying the information by 20.

An information distribution schedule determining process (an example of a distribution schedule generation method according to the present invention) by the content control module 103 will be described with reference to FIG. The content control module 103 is based on the user need attribute information (corresponding to preference information) set in the user need DB 107 and the user ID (corresponding to identification information) of the user who is currently in the wireless communication area. Then, the current needs distribution (corresponding to the preference information statistical value) is calculated (S53, preference information statistical value calculation step). Here, a user who is currently in the wireless communication area (a user who has entered the wireless communication area within a certain period of time in the past is regarded as this)
ID is stored in the memory 1 by the communication control module 104.
08 (S51, S52, details will be described later). On the other hand, the content control module 103 obtains the ID of the program (content) distributed within a certain period of time in the past (S61), and refers to the registered content attribute information set in the content DB 106 to distribute the broadcast result (distribution result). (Corresponding to the statistical value) is calculated (S62, distribution result statistical value calculating step). Subsequently, a difference between the user's needs distribution and the broadcast results distribution is determined, a program that minimizes the difference is selected, and a program schedule to be distributed within a predetermined time is generated (S71, distribution schedule generation step).

A specific example of the information distribution schedule determination process described above will be described with reference to FIG. Note that the registered content attribute information in FIG.
And the user need attribute information is the user need attribute information of the user who is currently in the wireless communication area. First, based on the user need attribute information, Y _i is calculated by further normalizing the average value of each attribute i, and is calculated as the above-mentioned needs distribution. Moreover, since there is no past broadcasting results in the initial state, the X _i calculated normalized values for each attribute i, respectively for each program, which is referred to as the broadcast actual distribution. Then, D = ΣMax (0, Y _i −X _i ) (a) is obtained for each program, and the program with the minimum D is the next broadcast program. In the example of FIG. 6, since D of the program 29 is 0.46, which is the minimum, the program 29 is first incorporated into the first broadcast schedule.
The following is the above-mentioned program 29 and broadcast experience program, this and other of the above broadcast proven distribution X _i calculated at each program, incorporate a program this is a minimum in the next broadcast schedule. Here, D calculated by the program 29 and the program 15 is 0.26.
, The program 15 is incorporated into the broadcast schedule following the program 29. Thereafter, the above process is repeated until a broadcast schedule within a predetermined time is determined. As shown in the program schedule calculation result shown in the lower right of FIG. 6, it can be understood that the distance between the user needs and the actual program becomes smaller as the program schedule progresses, and the user needs are satisfied. That is, according to the method of determining a broadcast program, even if the user is not sufficiently satisfied depending on one program, the user needs are complementarily satisfied by a plurality of programs that are continuously played. Further, since the distribution schedule is determined based on past broadcast results, even a program with relatively few requests is incorporated into a broadcast schedule at a reasonable frequency without being ignored.

(A-3. Communication Control Module 104) The communication control module 104 has a “user ID storage function”,
"Transmission frame length determination function", "Communication data output function"
It has the following three functions. This will be described below in order. The “user ID storage function” is a function of storing the user ID of a user (ie, the wireless mobile terminal 2) that has entered the wireless communication area of the base station 1. As described later, the wireless portable terminal 2
When detecting that the mobile station has entered the wireless communication area of the base station 1 based on the received radio wave intensity, the base station transmits a preset unique user ID to the base station 1. Upon receiving the user ID via the transmission / reception unit 105, the communication control module 104 stores the user ID and the reception time in the memory 108 for a predetermined time (S11 in FIG. 2, S51 and S52 in FIG. 5). When data transmission from a large number of wireless mobile terminals 2 is concentrated and a collision occurs, the user ID is set to −1 and stored in the memory 108 together with the reception time in the same manner as a normal user ID. The “transmission frame length determination function” determines the length of a frame that is a unit of communication between the base station 1 and the wireless portable terminal 2 (S in FIG. 2).
9). In this information distribution system, as shown in FIG. 7 (a), a synchronization bit string (fixed length) for synchronizing the communication between the base station 1 and the wireless portable terminal 2 is transmitted to the base station 1 from the wireless portable terminal 2. An uplink section (fixed length) for transmitting information (here, the user ID or the like in this case) and a transmission data section (variable length) for transmitting information from the base station 1 to each wireless portable terminal 2. It is assumed that communication is performed in a frame unit composed of two parts.

Here, the "transmission frame length determination function"
The length (time) of the transmission data part is determined based on the inflow speed (person / second) of the user into the wireless communication area of the base station 1, the collision frequency of the user ID transmission, and the like. For example, when the inflow speed increases, the length of the transmission data portion is shortened accordingly to increase the frequency of appearance of the uplink portion, thereby reducing the collision frequency of user ID transmission. Conversely, if the inflow speed decreases, the length of the transmission data section is lengthened accordingly to increase the data transmission efficiency. As a specific example, the user ID stored in the memory 108 by the above “user ID storage function”
Based on the information, the frequency at which the user ID = -1 appears, that is, the collision frequency is calculated, and if it is smaller than a predetermined first threshold, the frame length is increased by Δa bits, and the second threshold (> first threshold) If it is larger than (), a method of shortening the frame length by Δb bits can be considered. Alternatively, as shown in FIG. 8, based on the user ID sent from the wireless portable terminal 2, the inflowing population λ (person / second) into the wireless communication area is monitored, and at the same time, the number μ ₁ (person ) May be used as a constraint condition to determine the length F _data of the transmission data portion using Expressions (1) and (2). The lower right table in FIG.
7 shows simulation results of F _data when μ and μ ₁ are changed. The “communication data output function” outputs predetermined content data to the transmission / reception unit 105 according to the information distribution schedule determined by the content control module 103 and the frame configuration determined by the “transmission frame length determination function”. (S in FIG. 2
7, S8).

(A-4. Transmission / Reception Unit 105) The transmission / reception unit 105 controls wireless communication with the wireless portable terminal 2. That is, when a user ID is received from the wireless portable terminal 2, an interrupt is generated to output the user ID to the communication control module 4 (S10 in FIG. 2), and the content transmitted from the communication control module 104 is transmitted. The transmission data including data and the like is transmitted to each wireless portable terminal 2.
(S12 in FIG. 2). Here, FIG.
Using (b), the processing of the transmission / reception unit 105 is
A brief description will be given including the cooperation with the communication control module 104. When a data request is issued from the transmission / reception unit 105, the communication control module 104 converts the transmission data of the broadcast-scheduled program determined by the content control module 103 into a “transmission frame length determination function”.
Is written into the buffer of the transmission / reception unit 105 by an amount corresponding to the transmission data length determined by the above. After transmitting and receiving the synchronization bit sequence, the transmission / reception unit 105 waits for reception of an ID from the wireless portable terminal 2 in the uplink section. Here, when receiving the ID from the wireless portable terminal 2,
The transmission / reception unit 105 generates an interrupt to the communication control module 104 and issues a request for storing the ID.
Transmit the transmission data in the buffer. Transceiver unit 1
Control module 1 receiving ID storage request
04 stores the ID and the reception time in the memory 108. The above processing is repeatedly performed.

[B. Schematic configuration and processing contents of wireless portable terminal 2] As shown in FIG. 1, the wireless portable terminal 2 includes a transmitting / receiving unit 201 and a received data restoring processing module 202.
, A playback order determination module 203 and a playback module 204. As shown in the processing flow of the lower diagram of FIG. 2, the wireless portable terminal 2 performs only one of “reception”, “reconstruction of received data”, and “reproduction” at a certain point in time, and cannot perform parallel processing. I do. With reference to FIGS. 1, 2, and other drawings, a description will be given of the configuration and processing contents of each of the above units.

(B-1. Transmission / Reception Unit 201) The transmission / reception unit 201 controls wireless communication with the base station 1. If the processes of “restoration of received data” and “reproduction” are not performed, the transmission / reception unit 201 enters a radio wave standby state (S21 in FIG. 2). At the stage when the radio wave from the base station 1 is received, first, the synchronization bit sequence shown in FIG. 7 is waited. When the synchronization bit string is received (S25 in FIG. 2), after transmitting a user ID registered in advance in the uplink section, the reception of data (content) transmitted from the base station is started and stored in the reception data buffer. (S2 in FIG. 2)
6). Here, in order to reduce the frequency of transmission collision in the uplink as much as possible, once data reception is started, it is desirable not to transmit the user ID in subsequent frames.

(B-2. Received Data Restoration Processing Module 202) For example, if the received radio wave does not exceed a fixed time that is sufficiently longer than the uplink time, it may have left the radio communication area of the base station 1. If it is determined that the “reproduction” process has not been performed at that time, the received data restoration process by the received data restoration processing module 202 is started (S22 and S23 in FIG. 2). Until the restoration processing is completed, the reproduction processing of the restored contents and the reception processing of new data cannot be performed. When restoring received data, the type of subsequent data and the decoding method can be determined by detecting a separator such as SOD, SOC, or SOT. As described above, the types and order of the separators are defined for each type of content data such as TwinVQ. Here, a specific procedure for restoring the received data having the configuration as shown in FIG. 4 is shown in FIG. Read the received data one byte at a time, HEADER, PAT
The type of separator is determined based on the contents of TERN and PARAMETER. When SOD is detected, the following S
The data (contents management data) between OC and EOC is restored, and the data (contents data) between SOT and EOT is restored.

(B-3. Reproduction Order Determination Module 20)
3) As described above, in the present information distribution system, all the contents distributed to the wireless portable terminal 2 are not necessarily necessary information for the user because the broadcast type information distribution is performed. Even for necessary information, there is a difference in their priorities. Furthermore, TwinVQ
Since the content highly compressed by, for example, is distributed at a high speed of, for example, 11 Mbps, a large number of contents are stored in the wireless portable terminal 2 in a short time.
Therefore, if the user himself / herself selects and reproduces only the content necessary for himself / herself from a large number of received contents, it takes a lot of trouble and time, which is not realistic.
Therefore, in the wireless portable terminal 2, the reproduction order of the received content is automatically determined by the reproduction order determination module 203 so that the reproduction contents are reproduced in order from the one that matches the user's preference (S24 in FIG. 2). ).

The processing method by the reproduction order determination module 203 will be specifically described with reference to FIG. User preference information is registered in the wireless portable terminal 2 in advance.
This preference information is stored in the user needs DB 107 in the base station 1.
Are represented by the same attribute information (correspondence degree for each attribute proposition) as that registered in. The content management data restored from the received data includes attribute information for each content. Therefore, the reproduction order determination module 203 calculates the distance between the attribute information for each content and the attribute information in the user preference information, as shown in the example in the lower part of FIG. 10, and the smaller the distance, the earlier the order. The reproduction order of all content data is determined. This makes it possible to automatically determine the reproduction order according to the user's preference without bothering the user. The user can reproduce even the content of his or her interest, and delete the remaining data without reproducing it, for example.

(B-4. Reproduction Module 204) When the user issues a "reproduction" request, such as pressing a reproduction button, during an idle time other than "at the time of reception" and "at the time of data restoration processing" (see FIG. 2). S27), the reproduction module 204
The content is played back in the order determined by the playback order determination module 203 or in the order directly specified by the user (S28 in FIG. 2). For example, music content is output to an earphone, and image and text information content is output to a liquid crystal screen.

As described above, in the base station 1 of the information distribution system Z1 according to the present embodiment, the content control module 103 stores the user needs attribute information set in the user needs DB 107 and the current wireless communication area. A user's need distribution is calculated based on the user ID of the user who enters the broadcast, and broadcast is performed based on the ID of the program (content) distributed within a predetermined time in the past and the registered content attribute information set in the content DB 106. A one-to-many broadcast type is calculated in order to calculate a performance distribution, select a program that minimizes the difference between the user needs distribution and the broadcast performance distribution, and generate a program schedule to be distributed within a predetermined time thereafter. With this information distribution, the satisfaction of each user can be evenly increased.

[0024]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the above embodiment, the most preferable example is a user (terminal) entering a radio communication area of a base station.
Although the distribution schedule is generated so as to satisfy only the preference of the user, for example, a constant effect of increasing the satisfaction of the user can be achieved by generating the distribution schedule that always satisfies the preference of all the registered users. Can be expected. Also, for example, when the wireless communication area of the base station is extremely wide and most users are always in the wireless communication area, it is sufficient to generate a distribution schedule that always satisfies the preferences of all registered users. is there. Further, in the above-described embodiment, as the most preferable example, the distribution schedule is generated in consideration of the program broadcast in the past predetermined time. However, the distribution schedule may be generated without considering the past broadcast results. It is possible. Further, the distribution schedule generation method and apparatus according to the present invention are not limited to application to an information distribution system including a wireless base station and a wireless portable terminal as in the above-described embodiment. The present invention is also applicable to a one-to-many information distribution system using a line such as a television.

[0025]

As described above, according to the present invention,
Since the distribution schedule is generated based on the preference information of each terminal (user) and the attribute information of the information, it is possible to increase user satisfaction in information distribution by one-to-many broadcasting. In addition, by considering past distribution results, even information of relatively low demand is not ignored and can be incorporated into the distribution schedule at a reasonable frequency. In addition, if the distribution schedule is generated using only the preference information of the terminal capable of receiving the distribution information from the base station, the distribution schedule targeted for the user who is actually in the receiving state can be generated. Can be further improved.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an information distribution system Z1 according to an embodiment of the present invention.

FIG. 2 is an operation flowchart of the information distribution system Z1.

FIG. 3 Offline encoding module 10
The figure which shows an example of the user interface provided by 2 "content management functions."

FIG. 4 Offline encoding module 10
FIG. 2 is an explanatory diagram of processing by a “data conversion function” of FIG.

FIG. 5 is a flowchart showing a procedure of determining an information distribution schedule by the content control module 103;

FIG. 6 is an explanatory diagram of a specific example of an information distribution schedule determining process performed by the content control module 103;

FIG. 7 shows a frame configuration (a) in time-division communication of the information distribution system Z1, a communication control module 104 and a transmission / reception unit 10 for transmission / reception of each frame.
FIG. 9 is a diagram showing a processing flow (b) between steps 5 and 5;

FIG. 8 is an explanatory diagram of a specific example of processing by the “transmission frame length determination function” of the communication control module 104.

FIG. 9 is an explanatory diagram showing an example of a specific procedure of a received data restoration process by the received data restoration processing module 202;

FIG. 10 is an explanatory diagram showing a specific example of a processing method by a reproduction order determination module 203.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Laser light source 4 ... Mirror 5, 7, 10, 11 ... Lens 6 ... Pinhole 8 ... Transparent flat plate 8a ... Reference surface 9 ... Wafer (measurement object) 12 ... Line sensor 15 ... Computer (height information calculation means, And an example of the correction means)

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 5/38 H04N 7/173 610A 5C064 7/08 17/00 M 5K067 7/081 G06F 15/40 310F 7 / 173 610 15/403 340A 17/00 H04N 7/08 Z (72) Inventor Hideo Ikeda 1-5-5 Takatsukadai, Nishi-ku, Kobe-shi, Hyogo F-term in Kobe Steel Research Institute, Kobe Research Institute (reference) 5B075 KK07 ND20 NK06 PP10 PP30 PR08 5B082 EA07 5C025 AA01 5C061 BB03 5C063 AA20 AB03 AB07 AC01 AC05 AC10 5C064 BA01 BB10 BC18 BC20 BD05 BD08 5K067 AA21 BB21 CC14 EE02 EE10 FF02

Claims (12)

[Claims] 1. A method of generating a distribution schedule for distributing information by broadcast from one base station to a plurality of terminals, comprising: an attribute information setting step of setting attribute information for each distribution information in advance; A preference information setting step of setting preference information on distribution information for each terminal in advance in the same manner as the attribute information; an attribute information for each distribution information set in the attribute information setting step; A distribution schedule generating step of generating a distribution schedule based on the preference information for each terminal set in the step (a). 2. A preference information statistical value calculating step of calculating a statistical value of the preference information of each terminal based on the preference information of each terminal set in the preference information setting step, and a setting of the attribute information setting step. Based on the attribute information of each distributed program
Calculating a statistical value of attribute information of information distributed within a predetermined time in the past, wherein the distribution schedule generating step includes generating the preference information obtained in the preference information statistical value calculating step. 2. The distribution schedule generation method according to claim 1, wherein a distribution schedule is generated based on a statistical value and the attribute information statistical value obtained in the distribution result statistical value calculation step. 3. In the distribution schedule generating step, a distance between the preference information statistical value obtained in the preference information statistical value calculating step and the attribute information statistical value obtained in the distribution result statistical value calculating step is determined. Then, based on the attribute information for each piece of distribution information set in the attribute information setting step, one or a plurality of pieces of information that reduce the distance are selected, and a distribution schedule of information to be distributed within a predetermined time in the future is generated. The method according to claim 2. 4. In the preference information statistical value calculation step,
4. The distribution schedule generation method according to claim 2, wherein the preference information statistical value is calculated using only preference information of a terminal capable of receiving the distribution information from the base station. 5. The distribution schedule generation method according to claim 4, wherein a terminal capable of receiving distribution information from said base station is specified based on identification information transmitted from said terminal to said base station. 6. The distribution schedule generating method according to claim 1, wherein said base station is a wireless base station having a fixed wireless communication area, and said terminal is a wireless portable terminal. 7. An apparatus for generating a distribution schedule for distributing information by broadcasting from one base station to a plurality of terminals, comprising: attribute information storage means for storing attribute information for each distribution information in advance; Preference information storage means for storing in advance the preference information relating to the distribution information for each terminal in the same manner as the attribute information, attribute information for each distribution information stored in the attribute information storage means, and the preference information storage means And a distribution schedule generating means for generating a distribution schedule based on the preference information of each terminal stored in the distribution schedule generating device. 8. A preference information statistic calculation means for calculating a statistic value of preference information for each terminal based on the preference information for each terminal stored in the preference information storage means, and a preference information storage means for storing in the attribute information storage means. Based on the attribute information of each distributed program
Means for calculating a statistical value of attribute information of information distributed within a predetermined time in the past, wherein the distribution schedule generating means includes the preference information obtained by the preference information statistical value calculating means. The distribution schedule generation device according to claim 7, wherein a distribution schedule is generated based on a statistical value and the attribute information statistical value obtained by the distribution result statistical value calculation unit. 9. The distribution schedule generating means determines a distance between the preference information statistical value obtained by the preference information statistical value calculating means and the attribute information statistical value obtained by the distribution result statistical value calculating means. Then, based on the attribute information for each piece of distribution information stored in the attribute information storage means, one or more pieces of information that reduce the distance are selected, and a distribution schedule of information to be distributed within a predetermined time in the future is generated. The distribution schedule generation device according to claim 8. 10. The preference information statistical value calculating means calculates the preference information statistical value using only the preference information of a terminal capable of receiving the distribution information from the base station.
The distribution schedule generation device according to the above. 11. The distribution schedule generation device according to claim 10, wherein a terminal capable of receiving distribution information from said base station is specified based on identification information transmitted from said terminal to said base station. 12. The distribution schedule generating device according to claim 7, wherein said base station is a wireless base station having a fixed wireless communication area, and said terminal is a wireless portable terminal.