JPS63157583A - Teletext receiver - Google Patents

Abstract

PURPOSE:To always store the prescribed number of programs by integrating number of times of viewing, storing some program numbers with priority in the descending order and throwing away a program with less integrated value if the number of times of integration is changed. CONSTITUTION:In select a program number of an object character broadcast by a remote controller 30, the number of times of selection at each program number selected so far is integrated and counted by a picture processing MPU 9. The integrated value is stored in a program number data storage RAM 12. Moreover, the program corresponding to the allowable number of times preset in a program ROM 11 is stored to the program number data storage RAM 12 with priority sequentially in the order of the number with higher inte grated value simultaneously. If the number of times of the program data fetch exceeds the allowable number of times, the program number data with the least integrated value in the program number stored already in the program number data storage RAM 12 is thrown away and the program number data with much integrated value is stored.

Description

[Detailed Description of the Invention] "Industrial Application Field" When reserving a number for a teletext program, the present invention is capable of reserving the number of the program actually operated by the user without providing a special reservation mode mechanism. This invention relates to a teletext receiver that stores programs in a program number memory preferentially in descending order of viewing frequency.

"Conventional technology" Generally, the transmission interval of one page in teletext broadcasting.

is 20-3 in operational system matters considering the time to read etc.
It is said to be 0 seconds or less.

However, it would be even more desirable for the user to be able to receive and display a designated program immediately after selection, and to be able to upload or download the page of the received program.

As an example, when calculating a single piece of information sent from a broadcasting station, the upper limit from the transmission interval is 3.5 Mbytes (30 seconds
60 x 8) I x 24 bytes x 10 pages), the amount of information in actual broadcasting (1 TV channel, 4H superimposition)
There are 500 and 7607 pages of Bydoor 98 programs. The memory capacity required to store all this is economically difficult at current semiconductor prices. Therefore, it is necessary to store program data with priorities set from the user's standpoint.

Conventionally, for this purpose, a fixed preset method has been adopted, in which the user directly puts some of the currently broadcast programs into a reservation mode one by one and presets them using a preset key.

``Problems to be Solved by the Invention'' However, in the conventional system, the user operates a preset key to make a reservation directly, which has poor operability, and the reserved program is not necessarily one that has been viewed many times. There are also problems with the circuit, such as the need for preset keys and other parts for reservation, resulting in high costs.

"Means for Solving the Problems" The present invention was made to solve the above-mentioned problems, and it stores the cumulative number of selected programs for each program number, and also stores a certain number of program number data. A memory for storing program number data to be stored, a non-volatile memory for storing data in the memory for storing program number data when the power is turned off, and a program data storage RA for storing data of the set program.
M, a program ROM for storing an image processing program for teletext broadcasting and the permissible number of times of the memory for storing program number data; Issues a command to preferentially import programs corresponding to the allowable number of times set by the ROM, starting with the number with the highest integrated value, and a command to read and write program numbers to the non-volatile memory when the power is turned on and off. It is equipped with an image processing microprocessor.

"Function" When a target teletext program number is selected using the remote control, the image processing MPU cumulatively counts the number of selections for each program number selected so far. And program ROM
The program number data of the programs corresponding to the permissible frequency value (for example, 10 programs) preset in advance is stored in the program number storage RAM in order from the number with the highest cumulative value, and the program data is stored in the program number storage RAM. Capture and store in storage RAM. If the allowable number of times has been exceeded, the program number with the smallest integrated value among the already stored program number data is discarded, and the program number data with the largest integrated value is stored. In this way, by pre-memorizing programs with a large number of cumulative values for a permissible number of times, when a program is selected from among the stored programs, the specified program is immediately received and displayed, and the page of the program can be uploaded or downloaded. becomes possible. When the power is turned off, the contents of the program number data storage memory are held in the non-volatile memory as reserved program data, and when the power is turned on, the data is read out by the image processing MPU, and the program data of the program number is stored in the program data storage RA, M. and waits for the program number to be specified.

"Example" An embodiment of the present invention will be described below based on the drawings.

゛(1) is a TV video signal input terminal, and a synchronization signal generation circuit (3) and a data clock generation circuit (4) are connected to this video signal input terminal (1) via a waveform equalization circuit (2). An error correction circuit (6) is connected to this data/clock generation circuit (4) via an interface (5), and a byte bucket buffer (7 ) and to a path buffer (8). (9) is an MPU for image processing;
The program ROM (10) stores the teletext program and the permissible number of program numbers via the pass line (10).
11), RAM for storing program number data (12) that stores the selected cumulative number of times for each program number and a certain number of program number data; RAM for storing program number data when the power is turned off (12); non-volatile RAM (13) for holding program number data, bank switching refresh control circuit (14), RAM for storing teletext program data (15), CGROM (16), printer interface (17), melody processing MPU for
(18), CRT C (19), M for system control
P U (20), respectively.

The image processing MPU (9) also includes an interrupt circuit (
21) is coupled to the printer interface (1).
7) is connected to a printer (22) as an external device, and the melody processing MPU (18) is connected to a buffer data RAM (23) and an FM sound source circuit (24). ) is the TV interface (
25). The CRTC (19) L: is connected to the V-RAM (26), and the TV interface (25) and RGB encoder (27) are connected to the TV interface (25) and the RGB encoder (27).
Encoder (27) is TV connection terminal (28) (29)
is combined with

The system control MPU (20) is coupled to a light receiving section (31) of a remote controller (30), and is also connected to a system reset output terminal (32) and a power on/off terminal (33).

The use of the collar in the circuit configuration as described above will be explained.

When the desired teletext program number is selected using the remote control (30), the light receiving section (31) and the system control MPU
(20) to the image processing MPU (9). In addition, up to 8H is stored in the bucket buffer (7) for each Vd from the video signal input from the video signal input terminal (1).
Teletext data for 20 minutes is stored. Note that the code of the ladder data to the program index data is configured as shown in FIG. The number of times the program number is selected is added up. This integrated value is then stored in the program number data storage RAM (12). At the same time, the programs corresponding to the permissible frequency value (for example, 10 programs) preset in the Proguera A ROM (11) are preferentially transferred to the program number storage RAM in order from the number with the highest integrated value. At the same time, the program data is captured and stored in the program data storage RAM.

If the allowable number of times is exceeded, 1 program number data storage R
Among the program numbers already stored in A M (12), the program number data with the smallest integrated value is discarded, and the program number data with the largest integrated value is stored. In this way, program numbers with large integrated values are always stored for the allowed number of times.

When selected from among the stored programs using the remote control (30), the designated program is immediately received and displayed, and the page of the program can be moved up and down. When the power is turned off, the content of the program number data storage memory (12) is rewritten to the non-volatile memory (13) by a command from the 1-image processing MPU (9) to hold the reserved program data, and when the power is turned on, the image processing MPU The program data of the program number is loaded into the program data storage RAM (15) and waits for the program number to be designated.

The program number accumulation period is, for example, 1 month, 3 months,
It is also possible to set a period such as every year, and to accumulate the amount anew each time.

"Effects of the Invention" As described above, the present invention does not use the conventional fixed preset method using preset keys, but instead accumulates the number of viewings and stores some program numbers with priority in the order of the accumulated value. When the integrated value is reversed, the smaller one is discarded and a certain number of programs are always stored in memory, so it is possible to preset most of the programs that the user usually selects without having to preset them. Also, as soon as you select it, the specified program will be received and displayed, and the page of the received program will be uploaded.
I can go down.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of a teletext receiver according to the present invention, and FIG. 2 is a code structure diagram of ladder data to program index data. (1)...TV video signal input terminal, (7)...Bucket buffer, (9)...MPU for image processing, (10
)...Pass line, (11)...Program ROM
, (12)...RAM for storing program number data, (13
)...Nonvolatile RAM, (15)...RAM for storing program data, (20)...MPU for system control, (
30)...Remote controller, (31)...Light receiving section.

Claims (1)

[Claims] (1) A program number data storage memory that stores the selected cumulative number of times for each program number as well as a certain number of program number data, and a non-volatile memory that stores the data in this program number data storage memory when the power is turned off. program data storage RAM that stores data of set programs.
and a program R for storing a teletext image processing program and an allowable frequency value of the program number data storage memory.
To accumulate the OM, image processing command, program number identification, and number of selections for each program number, and to preferentially import programs corresponding to the allowable number of times set by the program ROM from the number with the highest accumulated value. What is claimed is: 1. A teletext receiver comprising: an image processing microprocessor that issues commands to read and write program numbers to a nonvolatile memory when power is turned on and off;