JPH1093946A - Reception terminal equipment and central transmitter for multiple address service providing system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a receiving terminal equipment and a central transmitter for a multiple address service providing system which can update data during the service. SOLUTION: When data is updated, the central transmitter transmits broadcast communication data 33 which has initial still picture data A to Z, initial control data 21, additional still picture data C' and update control data 32, 35 and 36, while a receiving terminal device stores the data 21 in control memory when it receives it in the data 33 for the first time, later, updates the data 21 stored in the control memory based on the data 32, 35 and 36 when it receives the data 32, 35 and 36, acquires the data A to Z and C' in the data 33 based on the data 21, 32, 35 and 36 that are stored in the control memory by the operational input of a user and shows it on a TV screen.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a receiving terminal device and a central transmitting device of a broadcast type service providing system of the type providing a service by a still picture, and more particularly to an improvement in data transmission traffic and a transmission error rate. The present invention relates to a memory device capable of easily managing a free storage area of a control memory, not increasing a required capacity of the control memory, and updating control data during provision of a service.

[0002]

2. Description of the Related Art A broadcast service providing system uses a wired system such as a public line or a CATV line as a transmission medium.
Alternatively, using a terrestrial wave represented by TV broadcasting, FM / AM or the like, a terrestrial wave typified by PHS communication, and a wireless system such as a satellite line, and using a character multiplex broadcasting, an FM multiplex broadcasting, and a full-field data transmission as data transmission methods. Various data transmission schemes such as schemes are used.

[0003] As one type of such a broadcast-type service providing system, there is a system which provides a service using a still image (still image data). For example, there is a still image service providing system using a CATV line.

[0004] A still picture service providing system using a CATV line includes a central transmitting device installed in a CATV station, a receiving terminal device installed in a guest room of a home or a hotel, and a receiving terminal device connected to the receiving terminal device. TV (image display device)
It is composed of

Next, the operation of the still image service providing system configured as described above will be described. In this still image service providing system, the central transmitting device has a plurality of still image data for providing various services to the user and broadcast data including control data having information indicating an order of transition of the still image data. It is transmitted to the receiving terminal device in a cycle. On the other hand, when the power is turned on, the receiving terminal device takes in the control data in the broadcast data, stores it in the control memory, and, when the user performs a selection input, receives the received broadcast data based on the stored control data. The TV captures still image data during communication and transmits it together with on-screen information (selection menu image data) generated based on the control data.
Display on the screen.

[0006]

However, in the above-mentioned conventional still image service providing system, the receiving terminal device takes in the control data only when the power of the receiving terminal device is turned on, so that the still image service is provided. During the update of the still image service, that is, the update of the still image data and the control data, the receiving terminal device that is ON before the update of the data uses the control data before update stored in the control memory. In such a case, even if an attempt is made to capture still image data, a situation may occur in which the corresponding still image data does not exist in the broadcast data. It is necessary to update the data after confirming that no service has been received or to forcibly interrupt the service and update the data There is a problem that can not be carried out to update the data in the provision of services.

Further, in the above-described conventional still image service providing system, even when only a part of data is updated, the entire updated data is transmitted, so that a large amount of data is simultaneously updated. There has been a problem that data transmission traffic deteriorates and a transmission error rate increases.

Further, even if an attempt is made to update the data, if the data length after the update is longer than the data length before the update, if the data length after the update is longer than the data length before the update, the storage area of the data before the update is There was a problem that data could not be overwritten and the data could not be updated as it was.

In order to solve the above problem, the control program is enlarged to suppress the cost of the receiving terminal device, so that the required capacity of the control memory storing the control program is not increased. It is requested to do so.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and can improve data transmission traffic, reduce a transmission error rate, update data of a variable-length format, and perform control. An object of the present invention is to provide a receiving terminal device and a central transmitting device of a broadcast-type service providing system capable of updating data during service provision without increasing the required memory capacity.

[0011]

A broadcast server according to the present invention is provided.
The receiving terminal device of the service providing system includes: a plurality of initial still image data for providing information to a user; initial control data having information indicating a transition order of the plurality of initial still image data; It has additional still image data that is added as needed to update the image data, and update control data that updates the initial control data so as to match the update content of the initial still image data. Receiving initial control data in the broadcast data for the first time after the start of reception, storing the received initial control data in a control memory, After storing the data in the control memory and receiving the update control data in the broadcast data, the initial control data stored in the control memory is updated with the update control data. When there is an input for updating based on the initial data and updating the display of the image display device, the broadcast data is updated based on the initial control data before the update stored in the control memory or the initial control data after the update. To capture the above initial still image data or additional still image data and display it on the image display device.

Further, the receiving terminal device of the broadcast-type service providing system according to the present invention uses the initial control data stored in the control memory to update the initial stationary data to be updated from the broadcast data. During the operation of capturing image data, the initial control data stored in the control memory is not updated.

[0013] The receiving terminal device of the broadcast-type service providing system according to the present invention may further include:
Receiving the broadcast data having information for transitioning the plurality of initial still image data by selecting a nested structure in which a selection option has a further selection option; and displaying the broadcast data on the image display device. When there is an input to select an option of the selection menu image data displayed on the image display device as an input for making the transition, the selected option is selected based on the initial control data stored in the control memory. Is generated and displayed on the image display device together with the initial still image data corresponding to the selected option to be captured from the broadcast data.

The receiving terminal device of the broadcast-type service providing system according to the present invention is connected to an image display device, and is used to provide a plurality of still image data for providing information to a user. Given corresponding to a plurality of still image data,
A service management number provided for each selection of a nested structure selection method in which a certain selection option has a further selection option, and control data having unit control data having a service transition number provided for each nested structure option. Having, a receiving terminal device for receiving broadcast data transmitted in a certain cycle, when receiving the broadcast data, the control data in the received broadcast data,
The control memory is configured such that the service management numbers of the unit control data in the control data can be indexed in numerical order, and the unit control data having the same service management number for each service management number is linked by data in the order of the service transition management number. When there is an input to select a certain option of the selection menu image data displayed on the image display device, the unit control data corresponding to the selected option is represented by a service management number and a service transition number. The index is read from the control memory, the still image data corresponding to the read unit control data is captured from the broadcast data, and the selection corresponding to the selected option is performed based on the read unit control data. Generate menu image data and combine it with the captured still image data It is obtained so as to display on the image display device.

[0015] The receiving terminal device of the broadcast-type service providing system according to the present invention may further comprise:
A plurality of initial still image data for providing information to the user, and additional still image data that is added as needed to update the plurality of initial still image data, and as the control data, Initial control data having the unit control data provided corresponding to the initial still image, additional unit control data provided corresponding to the additional still image data, and initial still image data to be updated. Receiving the broadcast data having the update control data having the update unit control data updated so as to conform to the update content, and first receiving the initial control data in the broadcast data after starting the reception. , The initial control data in the received broadcast data is searched in order of the service management number of the unit control data in the initial control data. After storing the unit control data having the same service management number for each service management number in the control memory so as to link the data in the order of the service transition management number in the control memory, and storing the initial control data in the control memory, Upon receiving the update control data in the broadcast data, the unit control data corresponding to the update unit control data stored in the control memory is indexed by the service management number and the service transition number of the update unit control data, and The link chain to which the indexed unit control data belongs is relinked to connect the update unit control data or the update unit control data and the additional unit control data instead of the indexed unit control data, and the link chain is displayed on the image display device. If there is an input to select an option of the selected menu image data, Based on the unit control data, update unit control data, or additional unit control data stored in the memory, selection menu image data corresponding to the selected option is generated, and initial still image data or additional still image data is selected from the broadcast data. The image data is captured, and the captured still image data is displayed on the image display device together with the generated selection menu image data.

The receiving terminal device of the broadcast-type service providing system according to the present invention stores the received initial control data or the unit control data of the update control data in the control memory in advance in the control memory. The above is performed by storing in a unit storage area where a certain storage capacity is secured, and when the stored unit control data becomes unnecessary,
The unit storage area for storing the unnecessary unit control data is released.

Further, the receiving terminal device of the broadcast-type service providing system according to the present invention updates the initial control data and then relinks the unit control data to the free storage area of the control memory. Are collected and secured.

Further, the central transmitting apparatus of the broadcast type service providing system according to the present invention is a central transmitting apparatus for transmitting broadcast data to a receiving terminal apparatus, wherein information is transmitted to a user of the receiving terminal apparatus. , And information indicating the order of transition of the plurality of still image data,
Broadcast data including control data having discrimination information for discriminating whether the control data is initial control data or update control data is transmitted at a certain period.

The central transmitting apparatus of the broadcast-type service providing system according to the present invention is a central transmitting apparatus for transmitting broadcast data to a receiving terminal apparatus, wherein information is transmitted to a user of the receiving terminal apparatus. And a service management number provided in correspondence with the plurality of still image data and provided for each selection of a nested structure selection method in which a certain selection option has a further selection option , And control data having unit control data having a service transition number assigned to each of the options of the nest structure.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. Embodiment 1 of the present invention describes the present invention as CA
This is an example in which the present invention is applied to a still image service providing system using a TV line. FIG. 1 is a diagram showing a configuration of a central transmitting device and a receiving terminal device of a broadcast-type service providing system according to the first embodiment.
V station 7 is each home, 6 is CATV station 1 and each home 7
This is a transmission path that connects between In the CATV station 1, a central transmitting device 2 is installed, and the central transmitting device 2 includes a still image data file 3 including storage means for storing still image data for providing information to a user, and a still image data file 3 Control data file 4 comprising storage means for storing unit control data corresponding to the still image data in the control data format, still image data read out from still image data file 3 and control data file 4, and control data And an image data / control data transmission control device 5 for synthesizing the data and transmitting the same to the transmission line 6 as broadcast control data. Here, the still image data is not limited to data having still image information, and may have only character information.

In each home 7, a receiving terminal device 14 operated by a remote controller 13 is installed.
Is connected to a TV 18 which is an image display device. The receiving terminal device 14 includes a tuner 8 for selecting broadcast data transmitted to the transmission line 6, a control memory 12 for storing control data in the broadcast data selected by the tuner 8, a tuner 8. An image memory 9 for storing the still image data in the broadcast data selected at 8;
The control data in the broadcast data selected in the step (b) is stored in the control memory 12, and based on the control data read from the control memory 12, the still image data in the broadcast data selected in the tuner 8 is captured. A control unit 11 for storing this in the image memory 9 and outputting control data read from the control memory 12 and a cursor control signal based on an operation input from the remote controller 13; and unit control data from the control unit 11. And an on-screen control unit 10 for generating on-screen information based on the cursor control signal and displaying the generated on-screen information together with the still image data read from the image memory 11 on the screen of the TV 18.

FIG. 2 is a diagram showing a format of initial broadcast data transmitted from the image data / control data transmission control device of the central transmission device 2 of FIG. 1, and FIG. 3 is a broadcast in updating data. FIG. 3 (a) is a diagram showing the format of data, FIG. 3 (a) is a diagram showing the format of broadcast data when still image data is added, and FIG. FIG. 3C is a diagram showing a format of communication data, and FIG. 3C is a diagram showing a format of broadcast data when still image data is changed.

In FIG. 2, AZ are initial still image data which are still image data given to broadcast data at the beginning of transmission, and each of the initial still image data AZ is
It has key numbers a to z. Reference numeral 21 denotes initial control data, tag information 22, and control data for A 2 which are unit control data corresponding to the respective initial still image data AZ.
It has control data 226 for 01 to Z. Tag information 2
2 has an update flag having a binary state of “initial control data” and “update control data”. In the initial control data 21, the update flag is in the state of “initial control data”. . The control data 201 for A to the control data 226 for Z include a number, which is a service management number given each time a nested structure is selected, which will be described later, and A
Numbers a to z, which are service transition numbers given to each of the control data 201 to Z for control data 226 and the key numbers, and which unit control data is located next to itself in a link chain described later. , And cursor position information (not shown) indicating the cursor position of the on-screen information generated by the on-screen control unit 10. Here, the number of the initial still image data A to Z is 26 in the first embodiment, but may be an arbitrary number. Before updating the data, the central transmitter 2 transmits the broadcast data 33 having the initial still image data A to Z and the initial control data 21 at a cycle of about 3 to 5 seconds (polling transmission).

In FIG. 3A, C 'is additional still image data which is added still image data, and number c'
Has a key number consisting of Reference numeral 32 denotes update control data for performing an update to add certain still image data, and includes tag information 22, control data 203a for update C, and control data 228 for C '. In the update control data 32, the update flag of the tag information 22 is set to "update control data". Update C control data 203
a indicates that the link chain position information is C 'next to its own.
It is the same as the C control data 203 except that the control data for data 228 indicates that it is located. The control data 228 for C 'is unit control data corresponding to the additional still image data C', and has the same service management number as the control data 203 for C 203 and a number c 'meaning the next to the number c. , The link chain position information indicating that the D control data 204 is located next to the self, and the cursor position information. In the case of performing an update for adding certain still image data C ′ to the initial still image data AZ, the central transmitting device 2
Are the initial still image data AZ, the additional still image data C ', the initial control data 21, and the update control data 32
Is transmitted in the above cycle. It is preferable that the transmission cycle be short as long as there is no inconvenience in operation of the still image service providing system.

In FIG. 3B, reference numeral 35 denotes update control data for deleting certain initial still image data (C in the figure), and includes tag information 22 and update B control data 20.
2a. In the update control data 35, the update flag of the tag information 22 is set to "update control data". The update B control data 202a is the same as the B control data 202 except that the link chain position information indicates that the D control data 204 is located next to the link chain position information. When performing an update to delete certain still image data C ′ from the initial still image data A to Z,
The central transmission device 2 transmits the broadcast data including the initial still image data A to Z, the initial control data 21, and the update control data 35 at the above-described cycle.

In FIG. 3 (c), C 'is updated image data which is still image data for replacing the initial still image data C, and is exactly the same as the updated image data shown in FIG. 3 (a). 36 is certain initial still image data (C in the figure)
Is update control data when updating is performed, and has tag information 22, control data for update B 202b, and control data for C '228. This update control data 3
In No. 6, the update flag of the tag information 22 is set to “update control data”. Update B control data 202b
Is the same as the B control data 202 except that the link chain position information indicates that the C 'control data 228 is located next to the link chain position information. The control data 228 for C 'is the same as the control data 228 for C' in FIG.
Is exactly the same as When performing an update for changing the still image data C including the initial still image data A to Z, the central transmission device 2 transmits the initial still image data A to Z, the additional still image data C ', the initial control data 21, Broadcast data including the update control data 36 and the update control data 36 is transmitted in the above cycle.

Here, it is possible to update the position of the initial still image data on the link chain. In such a case, the unit control data corresponding to the initial still image data to be changed and the unit control data The update control data having the update unit control data obtained by changing the above-mentioned link chain position information in each of the unit control data so as to conform to the content of the position change is created. Broadcast data to which update control data has been added may be transmitted.

FIG. 4 is a diagram showing a method of assigning a service management number and a service transition number.
1 to CH7 indicate certain selections in a nest structure selection method adopted as a method for selecting still image data to be displayed on a TV in the first embodiment, and BR1 to BR2
Reference numeral 6 indicates options of each of the selections CH1 to CH7. In this method of selecting a nest structure, the only option BR1 of the first selection CH1 is changed to the options BR2 to BR of the second selection CH2.
R6, and these options BR2 to BR6 are third to seventh options CH3 to CH7 (BR7
.. BR10,... BR26). A service number of is assigned to each of the selections CH1 to CH7, and a service transition number of a to z is assigned to each of the options BR1 to BR26. As described above, the unit control data 201 to 22
6, and the initial still image data A to Z correspond. Here, in the first embodiment, the number of selections in the method of selecting the nest structure is set to 7 and the number of options is set to 26, but both can be set to arbitrary numbers.

FIG. 5 is a schematic diagram showing a method of storing the unit control data in the control memory of the receiving terminal device. In FIG.
Are stored in the control memory 12 in advance so that a sufficient storage capacity for storing the unit control data is stored in the index table 62-66. (Unit storage area), 67 is a link chain for data linking between the transactions 62 to 66, and 62a to 66a have addresses of the transactions located before and after the transaction, thereby performing the data link, and This is header information having an update permission flag (not shown) having a binary state of "permitted" and "not permitted". For each of the service management numbers stored in the index table 61, the respective service management numbers Group of transactions that store unit control data with a sequence of service transition numbers And data link, and has a transaction group of the chain structure so that the data link corresponding to each service management number and respective service management number of the index table 61. In the figure, the transaction groups 62 to 62 corresponding to the service management number are shown.
Only 64 is shown. By storing the unit control data in the control memory in such a manner, the arbitrary unit control data is first indexed in the order of the service management number in the index table 61 in the numerical order, and the chain structure linked to the indexed service management number is obtained. Can be easily indexed by sequentially indexing the transaction groups by the service transition number.

Next, the operation of the central transmitting device and the receiving terminal device of the broadcast type service providing system according to the first embodiment configured as described above will be described, and the operation of the central transmitting device and the receiving terminal device will be outlined. The operation of displaying the still image data on the TV screen by the receiving terminal device and the operation of storing the received control data in the control memory by the receiving terminal device will be described in this order.

First, the outline of the operation of the central transmitting device and the receiving terminal device will be described with reference to FIGS. FIG. 6 is a diagram showing an outline of operations of the central transmitting device and the receiving terminal device. 1 and 6, the central transmission device of the CATV station 1 transmits the broadcast data 33 at a certain period. On the other hand, when the power of the receiving terminal device 14 is turned on (step S101), the home receiving terminal device 14 transmits the control data in the broadcast data 33 transmitted by the central transmitting device with the power-on as a trigger. The acquired control data is stored in the control memory 12. In response to a user's selection input, the still image data selected from the broadcast data 33 is captured based on the control data stored in the control memory 12 and displayed on the screen of the TV 18 (step S102). And the receiving terminal device 1
By turning off the power of No. 4, the provision of the still image service is terminated (step S103). Next, the display operation of the receiving terminal device on the TV screen will be described with reference to FIGS. FIG. 7 is a diagram for explaining a display operation of the still image data on the TV screen by the receiving terminal device,
FIG. 7A shows still image data, and FIG. 7B shows FIG.
FIG. 7C shows on-screen information corresponding to the still image data of FIG. 7A, and FIG. 7C shows still image data of FIG.
FIG. 7B is a diagram showing image data to be displayed on the TV obtained by combining the on-screen information of FIG. 7B and FIG. 7D is a diagram showing image data to be displayed on the TV next. Here, the still image data of the main menu screen corresponding to the option BR1 of the first selection CH1 in FIG. 4 as the still image data to be selected first, and the still image data in FIG. A description will be given taking still image data of “house information” corresponding to option BR2 of selection CH2 of No. 2 as an example. The receiving terminal device 14 receives the broadcast data 33 shown in FIG. 2 and stores the initial control data 21 in the control memory 12.
Are stored as shown in FIG.

In FIGS. 1 to 5 and 7, first, when the user selects an option on the main menu screen on a screen currently displayed by the remote controller 13 and inputs the option, the user receives this selection input. The control unit 11 indexes the unit control data 201 corresponding to the selected option BR1 with the service management number and the service transition number a corresponding to the selected option BR1, and stores the index of the indexed control data transaction for A. The update permission flag in the header information is set to “not permitted”, and the indexed control data for A 201 is read out from the control memory 12, and the initial stationary state corresponding to the read out control data 201 for A is read from the broadcast data. The image data A is captured and stored in the image memory 9, and the readout A control data 201 is subjected to on-screen control. Sent to 10, then the update permission flag in the header information of the A control data transactions in the control memory 12 to "permitted".

Upon receiving the control data for A 201,
The on-screen control unit 10 reads out the initial still image data A from the image memory 9 and reads out the screen construction information from the control memory 12, and reads the read out screen construction information and the unit control data 201 sent from the control unit 11.
A main menu screen for generating on-screen information 41 having a cursor 42 using the inside cursor position information and displaying on the TV 18 the generated on-screen information 41 and the initial still image data A read from the image memory 9. Of image data 43 of TV1
8 is displayed on the screen.

Next, when the user inputs to move the cursor 42 displayed on the screen of the TV 18, the controller 11 receives this input and outputs a cursor control signal to the on-screen controller 10. Upon receiving this output, the on-screen control unit 10 controls the display of the TV 18 so that the cursor 42 moves according to the cursor control signal.

Next, when the user selects the option BR2 of "Housing information service" of the image data 43 on the main menu screen displayed on the TV 18 and inputs this selection, the same operation as the operation described first is performed. , The still image data B is captured, and based on the still image data B and the on-screen information, the image data 44 to be displayed next on the TV 18 is displayed.
Are synthesized and displayed on the screen of the TV 18.

Hereinafter, a still image service is provided to the user by repeating this operation.

Next, the operation of storing the received control data in the control memory by the control unit of the receiving terminal device will be described with reference to FIGS.
And FIG. FIG. 8 is a diagram illustrating an operation of storing the received control data in the control memory by the control unit of the receiving terminal device.

Here, the receiving terminal device turns on the power and starts receiving the broadcast data. Thereafter, during the reception, the service provided by the system becomes as shown in FIG. It is updated to add still image data, and at the time of this update, the receiving terminal device does not use the unit control data stored in the control memory.

In FIG. 1 to FIG. 5 and FIG. 8, first, at the start of the broadcast, the central transmitting apparatus transmits the broadcast data having the initial still image data A to Z and the initial control data 21 shown in FIG. 33 is transmitted in a certain cycle. Upon receiving this transmission, the control unit 11 of the receiving terminal device performs the following data processing operation each time it receives control data.

First, when the initial control data 21 is received first after the power of the receiving terminal device 14 is turned on, it is determined in step S1 whether control data has already been received.
Since control data is received for the first time, the process proceeds to step S2, and it is determined based on the update flag whether the received control data is initial control data. If the received control data is the update control data, the data processing ends. This is to prevent the update control data from being taken in first because the still image service cannot be provided only by the update control data. Here, since it is the initial control data, the process proceeds to step S3, where the transaction is captured, and the unit control data 201 to 226 of the received initial control data 21 are stored in the captured transaction. Then, the process proceeds to step S4, and as shown in FIG.
Is stored in the index table 61, and the transaction storing the unit control data is data-linked to a chain structure. Thus, the received control data 21 is stored in the control memory 12.

Next, when receiving the initial control data 21 for the second time or more after the power of the receiving terminal device 14 is turned on, it is determined in step S1 whether or not the control data has already been received. Since the data has been received, the process proceeds to step S5. In step S5, it is determined whether or not the control data received is the update control data based on the update flag. However, since the control data is the initial control data, the present data processing ends.

Next, in order to update the service provided by the system so as to add still image data, the central communication device uses the initial still image data A to Z and the additional still image data C shown in FIG. ', The broadcast data 33 having the initial control data 21 and the update control data 32 are transmitted at a certain period. Upon receiving the broadcast data 33, the control unit 11 of the receiving terminal device 14 performs the following operation.

First, upon receiving the initial control data 21,
In step S1, it is determined whether control data has already been received. However, since the initial control data has already been received, the process proceeds to step S5, and whether the received control data is update control data is determined based on the update flag. Since this is the initial control data, the data processing ends.

Next, upon receiving the update control data 32,
In step S1, it is determined whether control data has already been received. Since the initial control data has already been received, the process proceeds to step S5, where it is determined whether the received control data is update control data based on the update flag. , Update control data, the process proceeds to step S6.

In step S6, the C control data 203 to be updated is indexed by the service management number and the service transition number c to read the header information 63a of the C control data transaction 63, and the read header information 63a is read. It is determined whether the update permission flag of 63a is "permitted". If the C control data 203 to be updated is being used, the update permission flag of the header information 63a is "not permitted". In such a case, the data processing ends. In this case, the above steps are repeated until the update permission flag becomes “permitted” in the present data processing performed in each cycle from the next time.
This prevents a malfunction caused by updating the unit control data in use. Here, the C control data 203 to be updated is not used, and
Since the update permission flag of the header information 63a is "permitted", the process proceeds to step S7, where the two transactions 65 and 66 are captured, and the received update control data 3
Two transactions 65 and 66 that have captured the update data C for control C 203a and the control data 228 for C '
Respectively.

Then, the process proceeds to step S8, in which the link chain 67 linked in the order of the B control data transaction 62, the C control data transaction 63, and the D control data transaction 63 is changed to the B control data transaction 62, the update C Control data transaction 65, C 'control data transaction 6
6, the control data transaction 63 is reconnected so as to be linked in this order.

Next, the process proceeds to step S9 to release the unnecessary C control data transaction 63, and then proceeds to step S10 to include the unnecessary C control data transaction 63 and the control generated by the data update. The free storage areas in the memory 12 are collected and secured.

Here, in the above description, the operation in the case of receiving the broadcast data for updating to add the still image data has been described. However, the broadcast data for deleting or changing the still image data is received. The operation in this case is exactly the same as above. Then, in the case of the update for deleting or changing the still image data, in step S6, the header information 6
Even if the update permission flag of 3a is set to "not permitted" and the data processing is completed, the initial still image data exists in the broadcast data. The display operation on the TV can be performed without the need.

In the above description, the on-screen information is displayed on the TV, and the still image data displayed on the TV is changed according to the user's selection input.
For example, as the control data, a transition number for transitioning the still image data in the order of the number is given, and the on-screen information is not displayed on the TV. You may make it change.

Further, in the above description, the data is updated once, but may be updated a plurality of times.

In the first embodiment, the present invention is applied to CA
The case where the present invention is applied to a still image service providing system using a TV line has been described. Among other broadcast type service providing systems such as teletext multiplexing and FM multiplex broadcasting, there is a type in which a service is provided using a still image. The present invention can be similarly applied to a device.

As described above, in the first embodiment,
In the transmission cycle, the broadcast data 33 including the initial still image data AZ, the additional still image data C ', the initial control data 21, and the update control data 32, 35, 36 is received. When the initial control data 21 in the broadcast data 33 is first received after the start of reception, the received initial control data 21 is stored in the control memory 12, and after storing the initial control data 21 in the control memory 12, the broadcast communication is performed. When the update control data 32, 35, and 36 in the data 33 are received, the initial control data 21 stored in the control memory 12 is received.
Is updated based on the update control data 32, 35, 36, and T
Based on the initial control data before update or the initial control data after update stored in the control memory, initial still image data or additional still image data from broadcast data based on an input for changing the display of V18. Is captured and displayed on the TV 18, so that control data is fetched not only at the start of reception but also during reception as in the conventional example, so that the still image data AZ and the initial Even if the control data 21 is updated, no mismatch occurs between the initial control data 21 and the still image data A to Z, and the still image data A to Z can be updated without interrupting service provision to the system, and Still image data A ~
Since only the data of the part of Z to be updated needs to be transmitted to the receiving terminal device 14, the traffic rate of the transmission path can be improved,
In addition, the transmission error rate can be reduced.

In the first embodiment, the operation of capturing the initial still image data to be updated from the broadcast data 33 using the initial control data 21 stored in the control memory 12 is performed. In this case, the initial control data stored in the control memory 12 is not updated, so that a malfunction caused by updating the control data in use can be prevented.

Also, in the first embodiment, the broadcast data 33 having information having information for transitioning a plurality of initial still image data by selecting a nest structure is received as the initial control data 21. , TV18
Of the selected option BR1 based on the initial control data 21 stored in the control memory 12, when there is an input to select the option BR1 having the on-screen information displayed on the TV 18 as an input for transitioning the display of. To generate the on-screen information 41 corresponding to the selected option BR1 from the broadcast data 33.
Is displayed on the TV 18 together with the initial still image data A corresponding to the above, so that the screen can be changed by a user's selection input, and the still image data can be updated without interrupting the service provision to the system. It is possible to provide a receiving terminal device of the report type service providing system.

In the first embodiment, in the transmission cycle, the still image data AZ and the nested structure selection method CH1 corresponding to the still image data AZ are selected.
~ Service management number assigned to each CH7 ~ and service transition number a assigned to each of options BR1 to BR26
And the control data 21 having the unit control data 201 to 226 having the control data 21 to 226. When the control data 21 in the broadcast data 33 is received, the unit control data 201 to 226 are received. Are stored in the control memory 12 in such a manner that the service management numbers 索引 can be indexed in numerical order, and the unit control data having the same service management number for each service management number デ ー タ is data-linked in the order of the service transition management number.
When there is an input to select an option BR1 with on-screen information displayed on V18, the unit control data 201 corresponding to the selected option BR1 is controlled by indexing the service control number and the service transition number a. The unit control data 201 read from the memory 12
Is captured from the broadcast data 33 and the read unit control data 201
, On-screen information 41 corresponding to the selected option BR1 is generated and displayed on the TV 18 together with the captured still image data A, so that the control data 21 is controlled in units of still image data. The division into the data 201 to 226 makes it possible to handle the unit control data 201 to 226 in a transaction format.
The unit control data 201 to 226 having the service control numbers ~ and the service transition numbers a to z corresponding to ~ CH7 and the options BR1 to BR26 can be indexed in the order of the service management numbers, and the data links are arranged in the order of the service transition management numbers Since the control data is stored in the control memory 12, the unit control data 201 to 226 can be easily indexed by the service management numbers 〜 and the service transition numbers a to z. The control program becomes simple.

In the first embodiment, the initial still image data A to Z and the additional still image data C 'are provided as still image data, and the unit control data 201 to 226 are provided as control data. Control data 21 and unit control data 22 corresponding to additional still image data C '
8, and update unit control data 202a, 202b, 20
Broadcast data 33 having update control data 32, 35, and 36 having 3a is received. When the initial control data 21 in the broadcast data 33 is received, the initial control data 21 is used as control data. The update control data 32 in the broadcast data 33 stored in the control memory 12,
When receiving the data 35 and 36, the unit control data 201 to 226 of the control data 21 stored in the control memory 12 are data-linked again according to the contents of the update control data 32, 35 and 36, and the on-state displayed on the TV 18 is displayed. When there is an input to select an option having screen information, the selected option is selected based on the unit control data 201 to 226 stored in the control memory 12, the update unit control data 202a, 202b, 203a, or the additional unit control data 228. Since the on-screen information corresponding to the above is generated and the initial still image data or additional still image data is captured from the broadcast data and displayed on the TV 18 together with the above-described generated on-screen information. The program will be simpler and will not interrupt service delivery to the system. Still image data updatable broadcast type service - it is possible to provide a receiving terminal apparatus of the screw delivery system.

In the first embodiment, the received initial control data 21 or the updated control data 32, 3
5,36 unit control data 201-226,202a,
When the unit memory 202b and 203a are stored in the control memory 12 in a transaction in which a predetermined storage capacity is secured in advance, the unit control data is stored in the control memory 12. Since the transaction that stores the unit control data is released, the control logic of the memory area management processing and the control data update processing is clearly separated, the control data update processing program becomes easy, and the memory area is allocated. It can be used efficiently and the required capacity of the control memory can be reduced. Also, since the update control data is stored in a new unit storage area instead of overwriting the old control data storage area as in the conventional example, the data length of the old control data and the data length of the update control data are different. Even if different, the control data can be updated.

In the first embodiment, after the initial control data 21 is updated, free storage areas of the control memory 12 generated by relinking the unit control data are collected and secured. Therefore, management of the memory area of the control memory becomes easy.

In the first embodiment, the plurality of still image data AZ and the plurality of still image data A
Control data 21, 32, which have information indicating the order of transition of Z, a to z, and update permission flags that can determine whether the data is initial control data or update control data.
Since the broadcast data 33 including the data 35 and the data 36 are transmitted in a certain cycle, when updating the still image data and the control data, the original control data is replaced with the initial control data 21 and the update of the control data. Update control data 3
2, 35, 36, and broadcast data 33 in which required still image data C 'is added to the original still image data AZ, and the initial control data 21, And the update control data 32, 35, 36
Since the receiving terminal device 14 discriminates and captures the data, there is no mismatch between the control data and the still image data during reception, and the still image data can be updated without interrupting the service provision to the system. In addition, it is possible to obtain an effect that the traffic rate of the transmission path can be improved and the transmission error rate can be reduced.

In the first embodiment, a plurality of still image data AZ and a plurality of still image data A to Z are provided corresponding to the plurality of still image data A to Z, and a selection method CH1 to nest structure selection method.
Unit control data 201 to 22 having a service management number to be assigned to each CH7 and service transition numbers a to z to be assigned to each of the nested structure options BR1 to BR26
Since the broadcast data 33 having the control data 21 having the number 6 is transmitted at a certain period, the broadcast data 33 is received by the receiving terminal device 14, and the control data 21 is transmitted to the service management unit. By storing the control data in the control memory 12 in such a manner that the index can be indexed by the numbers 〜 and the service transition numbers aｚz, the control program can be simplified. It is possible to obtain an effect that the program of the updating process becomes easy and the memory area management of the control memory becomes easy.

[0061]

As described above, according to the present invention, initial still image data, additional still image data,
Broadcast data having initial control data and update control data is received. When the initial control data in the broadcast data is received for the first time after the start of reception, the received initial control data is stored in the control memory. Then, when the update control data in the broadcast data is received after storing the initial data in the control memory, the initial control data stored in the control memory is updated based on the update control data, and the display of the image display device is changed. Input, the initial still image data or additional still image data is captured from the broadcast data based on the initial control data before the update stored in the control memory or the initial control data after the update, and this is captured. Since the image data is displayed on the image display device, even if the still image data and the control data are updated during reception, unmapping between the control data and the still image data is performed. There does not occur, it is possible to update the still image data without interrupting services to the system, and improve the traffic rate of the transmission path, and it is possible to reduce the transmission error rate.

According to the present invention, when the operation of capturing the initial still image data to be updated from the broadcast data using the initial control data stored in the control memory is performed, Since the initial control data stored in the unit control data is not updated, a malfunction caused by updating the unit control data in use can be prevented.

According to the present invention, broadcast data having information for transitioning a plurality of initial still image data by selecting a nest structure is received as initial control data. When there is an input to select an option of the selection menu image data displayed on the image display device as an input for transitioning the display of, the selected option is selected based on the initial control data stored in the control memory. Since the corresponding selection menu image data is generated and captured from the broadcast data, it is displayed on the image display device together with the initial still image data corresponding to the selected option. That can update still image data without interrupting service provision to the system. It is possible to provide a receiving terminal apparatus of the screw delivery system.

Further, according to the present invention, within the transmission cycle, the still image data, the service management number corresponding to the still image data and assigned for each selection of the nest structure selection method, and assigned to each option Broadcast data having control data having unit control data having a service transition number to be transmitted. When control data in the broadcast data is received, the service management number of the unit control data is indexed in numerical order. And the unit control data having the same service management number for each service management number is stored in the control memory so as to be data-linked in the order of the service transition management number, and the selected menu image data displayed on the image display device is displayed. When there is an input to select a certain option, the unit control data corresponding to the selected option is transmitted to the service management. The still image data corresponding to the read unit control data is captured from the broadcast data, and the selected option is selected based on the read unit control data. Since the selection menu image data corresponding to is generated and is displayed on the image display device together with the captured still image data, since the control data is divided into unit control data of still image data units, The unit control data can be handled in a transaction format, and the control program in the receiving terminal device can be simplified.

According to the present invention, the still image data includes initial still image data and additional still image data, and the control data corresponds to the initial control data having unit control data and the additional still image data. Broadcast data having unit control data and update control data having update unit control data is received. When initial control data in the broadcast data is received, the initial control data is controlled as control data. When the update control data in the broadcast data is stored in the memory, the unit control data of the control data stored in the control memory is data-linked again according to the content of the update control data, and is displayed on the image display device. When there is an input to select a certain option of the selected menu image data, the unit control data stored in the control memory, Based on the unit control data or the additional unit control data, the selection menu image data corresponding to the selected option is generated, and the initial still image data or the additional still image data is captured from the broadcast data, and the above is captured. Since the selected menu image data is displayed together with the generated image data on the image display device, the control program is simplified, and the broadcast type service can update the still image data without interrupting the service provision to the system. The receiving terminal device of the providing system can be provided.

According to the present invention, the storage of the unit control data of the received initial control data or update control data in the control memory is stored in the unit memory area of the control memory in which a certain storage capacity is secured in advance. By doing
When the stored unit control data becomes unnecessary, the unit storage area for storing the unnecessary unit control data is released, so that the control data update processing program becomes easy and the memory area is reduced. It can be used efficiently and the required capacity of the control memory can be reduced. Further, even if the data length of the old control data is different from the data length of the update control data, the control data can be updated.

Further, according to the present invention, after the initial control data is updated, a free storage area of the control memory generated by relinking the unit control data is collected and secured. The management of the memory area becomes easy.

Further, according to the present invention, a plurality of still image data, information indicating the order of transition of the plurality of still image data, and whether it is initial control data or update control data can be determined. Since the broadcast data having the control data having the information is transmitted at a certain period, when updating the still image data and the control data, the original control data is updated with the initial control data and the control data. A portion to be updated is set as update control data, broadcast data in which necessary still image data is added to the original still image data is transmitted, and initial control data and update control data in the transmitted broadcast data are received. By allowing the terminal device to determine and capture the data, there is no mismatch between the control data and the still image data during reception, and the service provision to the system is interrupted. It is possible to obtain an effect that no still image data can be updated, and improve the traffic rate of the transmission path, and it is possible to reduce the transmission error rate can.

Further, according to the present invention, a plurality of still image data and a service management number, which is provided in correspondence with the still image data and is assigned every time the nest structure selection method is selected,
And the control data having the unit control data having the service transition number assigned to each option of the nested structure, is transmitted at a certain period. The control data is stored in the control memory so that the control data can be indexed by the service management number and the service transition number, thereby simplifying the control program. By handling, it is possible to obtain an effect that the program of the control data updating process becomes easy and the memory area management of the control memory becomes easy.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a central transmitting device and a receiving terminal device of a broadcast service providing system according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a format of initial broadcast data.

FIG. 3 is a diagram showing a format of broadcast data when updating data, and showing a format of broadcast data when still image data is added (FIG. 3)
(a)), a diagram showing the format of broadcast data when still image data is deleted (FIG. 3 (b)), and a diagram showing the format of broadcast data when changing still image data (FIG. 3 (c)).

FIG. 4 is a diagram illustrating a method of assigning a service management number and a service transition number.

FIG. 5 is a diagram illustrating a method of storing unit control data in a control memory.

FIG. 6 is a diagram illustrating an outline of operations of a central transmitting device and a receiving terminal device.

FIG. 7 is a diagram for explaining a display operation of the still image data on the TV screen of the receiving terminal device, and is a diagram showing still image data (FIG. 7 (a)) and a still image shown in FIG. 7 (a). FIG. 7 shows ON screen information corresponding to data (FIG. 7 (b)), FIG.
FIG. 7C shows image data to be displayed on a TV obtained by synthesizing the still image data of FIG. 7A and the ON screen information of FIG. 7B (FIG. 7C). FIG. 7 (d).

FIG. 8 is a diagram showing an operation of storing received control data in a control memory by a control unit of the receiving terminal device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 CATV station 2 Central transmission device 3 Still image data file 4 Control data file 5 Image data / control data transmission control device 6 Transmission line 7 Home 8 Tuner 9 Image memory 10 On-screen control unit 11 Control unit 12 Control memory 13 Remote control 14 Reception Terminal device 21 Initial control data 22 Tag information 32, 35, 36 Update control data 33 Broadcast data 41 On-screen information 42 Cursor 43 Image data to be displayed on TV screen 44 Image data to be displayed next on TV screen 61 Index table 62 B control data transaction 63 C control data transaction 64 D control data transaction 65 Update C control data transaction 66 C ′ control data transaction 67 Link chain 62 a to 66 a Information 201 to 226 Control data for A to control data for Z 228 Control data for C 'AZ Initial still image data C' Additional still image data a to z Service transition numbers BR1 to BR26 Options CH1 to CH7 First selection Seventh selection-service management number

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI H04N 7/081 (72) Inventor Tsukasa Nagaki 1-12-20 Hikaricho, Higashi-ku, Hiroshima City, Hiroshima Prefecture Matsushita Electric Information System Hiroshima Co., Ltd. In the laboratory

Claims (9)

[Claims] 1. Initial control data which is used by being connected to an image display device and has a plurality of initial still image data for providing information to a user, and information indicating an order of transition of the plurality of initial still image data. , Additional still image data that is added as needed to update the plurality of initial still image data, and update control data that updates the initial control data so as to match the update content of the initial still image data. A receiving terminal device for receiving broadcast data transmitted in a certain cycle, wherein when the initial control data in the broadcast data is first received after the start of reception, the received initial control data is stored in a control memory. After storing the initial control data in the control memory and receiving the update control data in the broadcast data, the initial control data stored in the control memory is updated. When there is an input for updating based on the update control data and changing the display of the image display device, the broadcast is performed based on the initial control data before the update stored in the control memory or the initial control data after the update. A receiving terminal device for a broadcast-type service providing system, wherein the initial still image data or the additional still image data is captured from communication data and displayed on the image display device. 2. The receiving terminal of the broadcast-type service providing system according to claim 1, wherein the broadcast data is updated from the broadcast data using initial control data stored in the control memory. A receiving terminal device for a broadcast-type service providing system, wherein the initial control data stored in the control memory is not updated when an operation of capturing initial still image data is performed. 3. The receiving terminal device for a broadcast-type service providing system according to claim 1, wherein a selection option of a selection has a nest structure in which a selection option has a further selection option as the initial control data. Receiving the broadcast data having information for transitioning a plurality of initial still image data, which is displayed on the image display device as an input for transitioning the display of the image display device. When there is an input to select a certain option of the selection menu image data, the selection menu image data corresponding to the selected option is generated based on the initial control data stored in the control memory, and this is transmitted to the broadcast communication. Displaying on the image display device together with the initial still image data corresponding to the selected option captured from the data. Broadcast-type service to -
The receiving terminal device of the service providing system. 4. A plurality of still image data which are used in connection with an image display device to provide information to a user, and are provided corresponding to the plurality of still image data, and a certain selection option is further provided. Control data having unit control data having a service management number assigned for each selection of a nest structure selection method having selection options and a service transition number assigned for each nest structure option,
A receiving terminal device for receiving broadcast data transmitted in a certain cycle, wherein when receiving the broadcast data, the control data in the received broadcast data is replaced with a unit control in the control data. The service management numbers of the data can be indexed in numerical order, and the unit control data having the same service management number for each service management number is stored in the control memory so as to be linked by the data in the order of the service transition management number. When there is an input to select a certain option of the selection menu image data displayed on the device, the unit control data corresponding to the selected option is indexed by the service management number and the service transition number, and is read from the control memory. Reading, and capturing still image data corresponding to the read unit control data from the broadcast data. In both cases, based on the read unit control data, selection menu image data corresponding to the selected option is generated and displayed on the image display device together with the captured still image data. Terminal device of the type service providing system. 5. The receiving terminal device for a broadcast-type service providing system according to claim 4, wherein said still image data includes a plurality of initial still image data for providing information to a user; Additional still image data that is added as needed to update the initial still image data, and as the control data, initial control data having the unit control data given in correspondence with the initial still image, Update control having additional unit control data provided corresponding to the additional still image data, and update unit control data corresponding to the initial still image data to be updated and updated to match the update content Receiving the broadcast data having the data and the initial control data in the broadcast data for the first time after the start of reception. The initial control data in the broadcast data can be indexed in the order of the service management number of the unit control data in the initial control data, and the unit control data having the same service management number for each service management number can be serviced. After storing the initial control data in the control memory so as to be linked by data in the order of the transition management number, and receiving the update control data in the broadcast data, the update stored in the control memory is performed. The unit control data corresponding to the unit control data is indexed by the service management number and the service transition number of the update unit control data, and the link chain to which the indexed unit control data belongs is replaced with the indexed unit control data, Update unit control data, or relink to connect update unit control data and additional unit control data When there is an input to select a certain option of the selection menu image data displayed on the image display device, based on the unit control data, update unit control data, or additional unit control data stored in the control memory, It generates selection menu image data corresponding to the selected option, captures initial still image data or additional still image data from the broadcast data, and stores the captured still image data together with the generated selection menu image data. A receiving terminal device for a broadcast-type service providing system, wherein the receiving terminal device displays the image on the image display device. 6. The receiving terminal device of the broadcast-type service providing system according to claim 4, wherein storing the received initial control data or unit control data of update control data in the control memory comprises: This is performed by storing in a unit storage area in which a certain storage capacity is secured in advance on the control memory, and when the stored unit control data becomes unnecessary, a unit for storing the unnecessary unit control data. A receiving terminal device for a broadcast-type service providing system, wherein a storage area is released. 7. The receiving terminal of the broadcast-type service providing system according to claim 6, wherein said control memory is vacant by re-linking unit control data after updating said initial control data. A receiving terminal device for a broadcast-type service providing system, wherein a storage area is collected and secured. 8. A central transmitting device for transmitting broadcast data to a receiving terminal device, comprising: a plurality of still image data for providing information to a user of the receiving terminal device; Broadcast data having information indicating the transition order of the control data and control data having discrimination information for discriminating whether the control data is the initial control data or the update control data is transmitted at a certain period. Broadcast type service characterized by
Central transmission device of the service providing system. 9. A central transmitting device for transmitting broadcast data to a receiving terminal device, comprising: a plurality of still image data for providing information to a user of the receiving terminal device; , And a unit control having a service management number assigned for each selection of a nested structure selection method in which a selection option has further selection options, and a service transition number assigned for each nested structure option A central transmission device for a broadcast-type service providing system, wherein broadcast data having control data having data is transmitted at a certain period.