JPH02183682A - Teletext receiver - Google Patents

Abstract

PURPOSE:To reduce a trouble of re-registration required for each switching of a reception channel by storing a viewed program over plural pages by a receiver into a page memory automatically when the automatic registration is set. CONSTITUTION:A microcomputer 5 connects to a page memory 10 capable of storing plural program data corresponding to a program number and a program reservation registration list formed in a program number memory in the microcomputer 5 is able to be registered for the mode designation and a memo is addition to the program number corresponding to the registration position. Then in the registration position designated with the automatic registration mode, the offered page number of the designated program is connected and the program under reception designated based on the count detects the consecutive offer of plural pages and the program number under reception is registered automatically to the registration position of the program number memory set for the automatic registration. Thus, if the channel is restored to the preceding channel before the changeover, the trouble of re-registration is precluded.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention provides a teletext receiving device having a page memory capable of storing a plurality of teletext program data and registering program numbers to be stored. In particular, the present invention relates to a teletext receiving apparatus that can reduce the effort required to re-register a program number each time a channel is changed.

(Prior Art) Teletext broadcasting is a system in which various types of programs are repeatedly transmitted in the form of digital signals during a specific horizontal scanning period in the vertical retrace line of a television signal. On the receiving side, all the signals sent are extracted by a signal extraction operation and temporarily stored in a buffer memory. Then, when the receiver specifies a suitable program from among the plurality of stored programs, only the specified program is read out from the buffer memory and loaded into the display memory 21. The program data stored in the display memory is displayed on the screen through presentation processing.

However, as the number of programs to be transmitted increases, the time required to transmit all the programs becomes longer, and there is a problem in that the time required for a designated program to be presented on the screen, the so-called waiting time, becomes longer.

For this reason, conventional teletext receivers are provided with a page memory capable of storing a plurality of programs in addition to the display memory. By simply registering the program number attached to the desired program using the V-operation, the receiver can store the data of that program in the page memory, and present the program with almost no waiting time. It is something that can be done.

On the other hand, teletext has multiple channels, and the program types and numbers are not unified for each channel. When switching channels, program numbers must be registered and program data must be stored again for each channel. . In this case, the previously registered program disappears from the page memory, and when switching to the previous channel again, the same registration operation must be performed again, which is a hassle.

In order to eliminate this kind of complexity, page memory could be provided for each channel, but this would require a huge amount of memory, and due to the nature of the information provided by teletext, it would be difficult to store data for a long time. Since there is no benefit, the capacity of the page memory is set appropriately.

(Problems to be Solved by the Invention) As described above, in the conventional teletext receiving device, each time the channel is changed, the number of the program to be registered must be designated by key operation and the program data stored in the page memory must be re-stored. There was a problem that it had to be done.

Therefore, the present invention is intended to eliminate the above problems.
It is an object of the present invention to provide a teletext receiver capable of eliminating the tendency to re-register even when the channel is switched and then switched again to the previous channel.

[Structure of the Invention] (Means for Solving the Problems) The present invention handles a plurality of teletext program data inserted into the vertical blanking period of a television signal, stores it in a buffer memory, and processes the stored program data. It has a function of reading out only the specified program data from among them, transferring it to the display memory and presenting it on the screen, and is equipped with a page memory, in which the program number can be registered and the program data of the registered multiple programs can be stored. In a teletext receiving device having a function of reading out program data and presenting it on a screen according to a program number specification, a program number memory for registering program number data in which the registration position number of the page memory corresponds to the program number; and a setting means for setting program number registration for each registered position number to automatic registration in this program number memory, a counting means for counting the number of presentation pages of the specified program, and based on the counted value from this counting means. Detects that the program being received that has been specified continues to be presented on multiple pages, and automatically registers the program number being received in the σ record position of the program number memory where program number registration is set to automatic registration. A feature of the invention is that it is equipped with a registration means for

(Function) In the present invention, by setting automatic registration when setting program number registration, from then on, even if the reception channel is switched, the program that the recipient has selected and watched over multiple pages will be displayed. The program number is automatically registered (and the program data is stored), and the stored program data can be presented without waiting time.

(Example) The present invention will be described below based on the example shown in the drawings.

FIG. 1 is a block diagram showing the main parts of a teletext receiving apparatus according to an embodiment of the present invention.

In this figure, an input terminal 1 is supplied with a demodulated baseband video signal, and this video signal is sliced at a predetermined slice level in a waveform shaping circuit 2 to become a digital binary signal. The data acquisition circuit 3 handles the digital binary signal as teletext data for each data line under the timing control of the microcomputer 5.
4. Buffer memory 4 temporarily stores data from data acquisition circuit 3. If the stored data includes program number data that matches the program designation data from the program selection keyboard 6, the subsequent program data is transferred to the display memory 8, and the display memory 8 stores the transferred data. is written. The display control circuit 7 reads the data written in the display memory 8 and outputs it to the output terminal 9 to present the designated program.

Now, the microcomputer 5 is connected to a page memory 10 that can store program data for multiple programs in association with program numbers. Program data is registered in the page memory 10 by operating the program selection keyboard 6. The program selection keyboard 6 includes keys for specifying program numbers using a normal numeric keypad, etc., and an automatic registration setting button 6 for automatically registering programs as described below.
It is equipped with a.

When a recipient registers a program number corresponding to program data to be stored in the page memory 10, the registration is performed according to the program reservation registration table shown in FIG. The program reservation registration table is formed in the RAM (program number memory) in the microcomputer 5, and is displayed on a display means (not shown). In the program reservation registration table shown in FIG. 2, mode designation and memo can be registered in addition to the program number, corresponding to the registration position. The mode designation indicates whether or not automatic registration has been set using the automatic registration setting button 6a. If automatic registration is designated, rAIJ is displayed and the automatic registration status is indicated, and if automatic registration is not performed, the mode designation indicates whether or not automatic registration is set. will be displayed as r-J, and the conventional program 0 will be displayed.
It will be in a recording state. The memo indicates a memo of the program content registered by the recipient, and display characters are set by operating the keyboard 6. However, when the memo is in automatic registration mode, it is displayed as "← Automatic registration".

As a result, the microcomputer 5 searches the buffer memory 4 for the data of the corresponding program number in the registration position in the conventional program registration mode, and reads it into the page memory 10 (program number registration and program data storage).
I do. In addition, at a registered position where automatic registration mode is specified, the number of presented pages is counted when the receiver selects and receives a program other than the previously registered program, and the presentation is continued over multiple pages. , the automatic σ-registered position is searched from the lower number of the registered position,
The program number being presented is registered, and then the data of the corresponding program number is searched from the buffer memory 4 and written to the page memory 10 (program data storage). The data written in the page memory 10 as described above can be read out and presented on the screen without waiting time by specifying the program number using the program selection keyboard 6.

FIG. 3 is a flowchart showing the processing of the microcomputer 5 in FIG.

Steps 81, 82, and 33 are the steps when changing the program you have been watching and changing the program number, and step S1 is to determine whether there is a change in the selected program number being presented.
If there is a change, the decision will be yes and step 82.83
Execute.

In step S2, a counter value t of a presentation page counter that counts the number of pages of the program being presented is initialized to 0, and in step S3, a selection change process of the presentation program number is performed.

Step S4 is data import processing, in which after correcting errors in the teletext program packets stored in the buffer memory 4, program data is searched, and if the selected program is the one whose program number has been registered. The corresponding program data is written to the page memory, and if the program number of the selected program is not registered, the corresponding program data is written to the display memory.

In step S5, it is determined whether or not there are unprocessed packets of the program to be presented (currently being received). If there are no unprocessed packets, steps Sl, 84, and 85 are repeated; if there are unprocessed packets, the determination is YES;
Step S6 is executed.

In step S6, it is determined whether the packet data to be processed is page ladder data (PACI) indicating the start of page data. If no PACI is detected, the determination is no and step S11 is executed. Step 8
11 performs normal program data presentation processing, and step S
Return to 1.

In step S6, if PACI is detected, the determination is YES, and steps 87 and 88 are executed. In step S7, the counter value t of the presentation page counter is set to P
Add each time ACI is detected (t+1) 1. ,, go. In this way, the number of presentation pages of the program being received is counted. In step S8, the added presentation page count value is determined (confirmed), and if the count value t is not far from the predetermined number of pages to be automatically registered (automatic record start page value) n, the determination is made. No, step 31
Execute 1. Further, when the count value t reaches the automatic registration start page number n, the determination is YES and step S9 is executed. In this manner, in step S8, it is detected whether or not the program being received continues to present a predetermined number of pages.

In step S9, the program number memory (RAM) in which the program number to be stored in the pager 10 is registered is searched for the presence or absence of a registered position in which the automatic registration mode (AI) has been set. If there is no automatically registered position, the determination is no and step 811 is executed. If an automatically registered position is detected, the determination is YES, and step 310.3
11 is executed.

In step S10, the presentation program number is registered in the detected automatic registration position, and storage of the program data in the page memory 10 is started.

According to the above embodiment, if automatic registration is set, the program that the recipient has viewed over a plurality of pages is automatically stored in the page memory. Therefore, programs that are frequently viewed are automatically reserved and registered without any registration operations, and even if you switch the receiving channel and then switch back to the previous channel, the desired program will be displayed without waiting time depending on the program specified. can.

[Effects of the Invention] As described above, according to the present invention, it is possible to reduce the troublesome re-registration required each time the receiving channel is switched, and programs that the receiver often watches can be automatically reserved and registered with priority. It can be displayed without any waiting time.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the main parts of a teletext receiver according to an embodiment of the present invention, FIG. 2 is an explanatory diagram showing an example of display of a program reservation registration table configured in the program number memory of FIG. 1, FIG. 3 is a flowchart illustrating the processing operation of the microcomputer shown in FIG. 3...Data acquisition circuit, 4...Buffer memory,
5... Microcomputer, 6... Program selection keyboard, 6a... Automatic registration setting button, 7... Display control circuit, 8... Display memory, 10...
...Page memory.

Claims (1)

[Claims] A plurality of teletext program data inserted into a vertical retrace period of a television signal are extracted and stored in a buffer memory,
It has the function of reading out only specified program data from the stored program data, transferring it to the display memory and presenting it on the screen, and also has a page memory for registering program numbers and registering multiple registered programs. In a teletext receiving device having a function of storing program data, reading the program data by specifying a program number, and presenting it on the screen, program number data in which the registered position number of the page memory corresponds to the program number is provided. A program number memory for registration, a setting means for setting program number registration for each registration position number to automatic registration in this program number memory, a counting means for counting the number of presentation pages of a specified program, and this counting means. It is detected that the specified program being received has continued to present multiple pages based on the count value from , and the program number being received is sent to the registration position of the program number memory where the program number registration is set to automatic registration. 1. A teletext receiving device comprising: a registration means for automatically registering.