JPS58151786A - Character broadcast receiver - Google Patents

Abstract

PURPOSE:To display the character broadcast program of each display mode smoothly after the release of still display, by providing a spare memory storing the received character broadcast signal, while one desired page is still-displayed. CONSTITUTION:When the operator operates a still display means provided on a keyboard 3, the input of a refresh memory 4 is interrupted with the operation of a CPU2 and the character broadcast signal stored in the memory 4 is still- displayed on a display section 6. Further, while the input to the memory 4 is interrupted, the character broadcast signal transmitted to a buffer memory 1 is transferred to a spare memory 8 for sequential storage. In releasing the still display, the input interruption of the memory 4 is released, and the character broadcast signal is transferred from the memory 8 to the memory 4. After the transfer is finished, the character broadcast signal of each page of a desired character broadcast program stored in the memory 8 and the succeeding is transferred from the memory 1 to the memory 4 sequentially based on the order of reception and displayed on the display section 6.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a teletext receiver that receives a teletext signal superimposed on a television broadcast signal and displays a selected desired teletext program. One page of the teletext program is statically displayed for a desired period, and when the static display is canceled, the desired teletext program received during the static display period is displayed, and then the desired teletext program received after the static display period is displayed. The present invention aims to provide a teletext receiver capable of displaying programs.

In general, when a teletext signal is superimposed on a television broadcast signal and a teletext program containing characters and graphics is transmitted in addition to the television broadcast program, it is proposed that each page of multiple teletext programs is sent repeatedly in sequence. has been done.

(1) a television teletext receiver that receives the transmitted television broadcast program and teletext program, displays the television broadcast program, and displays a selected desired teletext program according to the display mode of the teletext program; That is, it has been proposed to add a function to a teletext receiver to statically display a desired page of a desired teletext program, that is, a static function.

By the way, the display mode of the teletext program to be transmitted is as follows:
Full-scale fixed display mode, in which each page of a teletext program is displayed statically in sequence on the entire display screen. Cell display mode, subtitle display mode, in which teletext programs such as subtitle services are sequentially displayed on the display screen in synchronization with the display of the television broadcast program. 1-line horizontal scroll display mode, i.e., a display mode in which a teletext program in one line is displayed while moving left and right on the display screen, and a full-scale vertical scroll display mode, i.e., a display mode in which the display screen is displayed with a kibbage header on the display screen. and so on.

Then, when the received teletext program is in one-line horizontal scrolling display mode or full vertical scrolling display mode, the above-mentioned static function causes a desired page to be displayed statically for a desired period, and then the static function is canceled. In this case, if the received page is not displayed after the desired page, for example, characters or sentences will be displayed discontinuously, making the displayed content unclear.

Furthermore, even if the received teletext program is, for example, a 4-page full-page fixed display mode program, when the static function is used to statically display a desired page for a desired period of time and then the static function is canceled, It is desirable to sequentially statically display one page received during the static display, that is, the next page following the statically displayed one page.

This invention was made with the above points in mind,
Next, the present invention will be explained in detail with reference to drawings showing an embodiment thereof.

The received television broadcast signal is transmitted to the television input terminal (INa), and a time-series digital signal superimposed on the television broadcast signal, that is, a time-series digital signal superimposed on the scanning line of the television signal during the vertical blanking period of the television broadcast signal. The teletext signal is converted into a teletext signal consisting of parallel digital signals by serial/parallel conversion, and the converted teletext signal is sent to the character input terminal (INb) based on the reception order.
a temporary storage unit that temporarily holds the teletext signal through the
That is, they are sequentially transmitted to the buffer memory (υ).

As mentioned above, the teletext signals of multiple teletext programs are sequentially and repeatedly superimposed on the television broadcast signal, and the one-character transmission signal contains various processing controls such as program number data and display mode. Contains data.

Then, by the operation of the central processing unit (2) forming the control unit, the program number data of the teletext signal held in the buffer memory (1) and the desired program number selected by the keyboard (3) for selecting a teletext program are selected. The teletext signal of the desired teletext program is identified from the teletext signal held in the buffer memory (1), and the desired character is transmitted to the buffer memory (1). Only the teletext signal of the broadcast program is transferred to the refresh memory (4) forming a rewritable storage section, and the teletext signal of each page of the desired teletext program is sequentially rewritten and stored in the refresh memory (4). Ru.

Further, the television signal from the television input terminal (TINa) is transmitted to the drive circuit (5), and the drive circuit (5) extracts the synchronous component of the television signal.
A read control signal based on the synchronization component is transmitted from the refresh memory (4) to the refresh memory (4).
4) to the display unit (6), the teletext signal of the desired teletext program is read out and transmitted at a timing synchronized with the vertical synchronization signal of the television broadcast signal, and the desired teletext signal is transmitted to the cathode ray tube of the display unit (6). Each page of the teletext program is displayed in sequence according to the display mode of the program.

Note that data such as processing procedures of the central processing unit (2) are stored in the program memory (7).

Next, in order to examine in detail a desired page of a desired teletext program displayed on display section 1 (6), the user selects a stationary display means provided on the keyboard (3), that is, a stop button. When the key (STP) is operated once.

By the operation of the central processing unit (2) based on the processing procedure of the program memory (7), the input to the refresh memory (4) is cut off, and the input to the refresh memory (4) is interrupted.
), that is, the teletext signal of one desired page is repeatedly transmitted to the display section (61), and the desired one page continues to be statically displayed on the display section (6).

- While input to the refresh memory (4) is cut off by operation of the stop key (STP).

The teletext signals transmitted to the panzer memory (υ are sequentially transferred to a spare memory (8) forming an auxiliary storage section, and the transferred teletext signals are sequentially stored in the preliminary memo January 8). .

Then, when the stop key (STP) is operated again to cancel the static display of the desired page on the display section +6), the input cutoff of the refresh memory (4) is canceled and the memory is first stored in the spare memory (8). The teletext signal of the desired teletext program is identified from the received teletext signal, and the teletext signal of each page of the desired teletext program is transferred from the spare memory (8) to the refresh memory (4), and the teletext signal of each page of the desired teletext program is transferred from the spare memory (8) to the refresh memory (4). ) After the transfer of the teletext signal from the refresh memory (4) is completed, the teletext signal of each page of the desired teletext program held in the preliminary memo IJ (8) K is stored in the buffer memo based on the reception order. '17 (1
) or La Refresh Memo + J (4)? cJ [The display mode of the desired teletext program that is transferred next.

Based on the 1 display (6), the stop key (STP)
Based on the operation of , the page next to the first page of the desired teletext program that is statically displayed is sequentially displayed.

Identifying the teletext signal of a desired teletext program from the teletext signal superimposed on each line of the teletext signal,
It takes one vertical period of the television broadcast signal, ie 1/60 seconds, to transfer the teletext signal from each of the panzer memory (1) and the spare memory (8) to the refresh memory (4).

Therefore, when a teletext program is displayed in full fixed display mode or full vertical scroll display mode, the teletext signal of one line of the television broadcast signal is used.

One line on one page of the teletext program is formed, and one line on one page of the desired teletext program is 276.
Since the teletext signal of the desired teletext program is received every 1/60 second, the teletext signal of the desired teletext program is identified from the teletext signals held in the preliminary memory (8), and the teletext signal is transmitted from the preliminary memory (8).
After transferring one line of teletext signal to the Ren/Ume memory (4) and transferring the teletext signal held in the spare memory (8) to the refresh memory (4), the teletext signal held in the Panzer memory (1) is transferred. The teletext signal, that is, the subsequent teletext signal held in the spare memory (8), is transferred to the refresh memory (4) for smooth display.

Note that while the teletext signal held in the spare memory (8) is transferred to the refresh memory (4), if the teletext signal of the desired teletext program is transmitted to the panzer memory (υ), Memory (1) to spare memory (8)
), the transmitted teletext signals are sequentially transferred to the terminals.

When a teletext program is in single-line horizontal scrolling display mode, one line of the teletext signal of the television broadcast signal forms 3/4 characters of one page of the teletext program, and 1/2/60 seconds. Since one page is transmitted each time, as mentioned above, if it takes 176 seconds to process one line of character signal of a TV broadcast signal, it will take 12,760 seconds to display one page, and the spare memory will be (8) The amount of teletext signals transmitted to Karari Arensch Memo (January 4) and the amount of teletext signals transmitted to Panzer Memory (1) become equal, and in this case, the amount of teletext signals transmitted to Panzer Memory (1) becomes equal. The teletext signals held in υ are sequentially transferred to the spare memory (8), and the refresh memory (4) is always transferred from the spare memory (8) to hold the character signals newly transmitted to the panzer memory (υ). ), character signals must be transferred to

Therefore, when a teletext program is in one-line horizontal scroll display mode, the central processing unit (2) operates according to the processing procedure of the program memory (7) to
The teletext signal of the two lines of the television broadcast signal held in the spare memory (8) is transferred to the refresh memory (4), and the teletext signal is transferred from the spare memory (8) to the refresh memory (4). Increase the amount.

In addition, spare memory (8) Karari Fresh Memory (4)
If you increase the amount of teletext signals transferred to 1 display area + 6
Although the display of 1 moves quickly, for example, when a 2-line teletext signal is transferred to the refresh memory (4), the display does not actually move unnaturally fast and a good display can be achieved.

Therefore, according to the embodiment, a stop key (s'i'i') is provided for refranging, and while a desired page is being displayed statically by operating the stop key (STP), the received teletext signal is By providing a spare memory (8) that holds a desired page of a desired teletext program, it can be held in the spare memory (8) after a desired page of a desired teletext program is displayed statically for a desired period of time, that is, after the static display is canceled. The teletext signal of the desired teletext program is transferred to the refresh memory (4), and further transferred to the spare memory (8).
The subsequent teletext signal held in the panzer memory (1), that is, the teletext signal of the desired teletext program held in the panzer memory (1), is transferred to the refresh memory (4) and continues to the desired single page that is displayed statically. It is possible to provide a teletext receiver that can display pages sequentially, can smoothly display teletext programs in each display mode, and has improved usability.

By increasing the capacity of the spare memory (8), the present invention can be applied even when the static display period based on the operation of the stop key (STP) is long.

As described above, according to the teletext receiver of the present invention, the teletext receiver receives a teletext signal superimposed on a television broadcast signal and displays a selected desired teletext program. a temporary storage section that temporarily holds signals; a rewritable storage storage section to which the teletext signal of a desired teletext program is transferred from the temporary storage section; a display unit that repeatedly displays a broadcast program; a static display unit that cuts off input to the storage unit through a static display operation and statically displays one page of a desired teletext program on the display unit;
A Urasuke storage section that holds the teletext signal via the temporary storage section while the input to the storage storage section is cut off, and a Urasuke storage section that identifies the teletext signal of a desired teletext program from the received teletext signal, and After the teletext signal of the desired teletext program held in the auxiliary storage is transferred to the storage storage by canceling the static display operation, the teletext signal is transferred to the storage storage. By transferring the teletext signals of the desired teletext program held in the auxiliary storage unit to the storage storage unit, one of the desired teletext signals
When the static display of a page is canceled, the desired teletext program can be displayed sequentially from the page following the static display, and after the static display is canceled, each display mode - teletext program can be smoothly displayed. It is also possible to display.

[Brief explanation of the drawing]

The drawing is a block diagram of essential parts of an embodiment of the teletext receiver of the present invention. (υ...panzer memory, (2)...central processing unit, (4)...refresh memory, (6)...display section, (8)...spare memory, (INa)... ...TV input terminal, (INb)...Character input terminal, (STP
)...stop key. Agent: Patent Attorney Ryuta Fujita Department Procedural Amendment (1/School) 1/If fi's life Sho fl15 4'+'i'l Application No. 35842
Name of No. 2 Invention Length character emblem sending'gu credit: (sleeve 11: old・1・f'lu・小山, right 1.'
1 Application Appointment Nora “Osaka H
, No. 18, Yamakyo Hankidori 2-chome Name: Cl88
) Sanyo, Uki Co., Ltd. representative Iue
Kaoru Agent 〒53 fi(1・'1
Person 1; 1 119-4, Todai 11142-chome, Yamakita-ku, T.
2) IA'510 White Funeral 7? 9th I)+1 vane...rr nautay)vc 1:I) l
The L line is V・zu bowing down! In order to make a TV broadcast 1ki jealousy correction.

Claims (1)

[Claims], J) In a teletext receiver that receives a teletext signal superimposed on a television broadcast signal and displays a selected desired teletext program, the received teletext signal is temporarily transmitted. a temporary storage section for keeping time; and a storage storage section on which a text broadcasting signal of the desired teletext program is transferred from the temporary storage section. a display unit that repeatedly displays the desired teletext program to which the teletext signal is transferred from the storage storage unit; and a display unit that cuts off input to the storage storage unit by a static display operation, and displays the desired teletext program #a. static display means for statically displaying one page of the text; an auxiliary storage section for holding the teletext signal via the temporary storage section while input to the storage storage section is cut off; a control unit that identifies the teletext signal of the desired teletext program and controls the operation of each of the units;
By canceling the static display operation, after transferring the teletext signal of the desired teletext program held in the auxiliary storage unit to the storage storage unit, the teletext signal held in the temporary storage unit and transferred to the auxiliary storage unit A teletext receiver, characterized in that the teletext signal of the desired teletext program after being held is transferred to the storage unit.