JP2859676B2 - Teletext receiver - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a teletext receiver capable of outputting audio.

2. Description of the Related Art Television teletext (hereinafter, abbreviated as "teletext broadcasting") has been put to practical use in which a code or pixel data is superimposed and transmitted during a vertical blanking period of a television video signal. The conventional teletext receiver has a built-in generator of characters, figures, and musical sounds, decodes the received code or pixel data, and outputs the decoded data from a television screen or a speaker.

Japanese Patent Application Laid-Open No. Sho 60-148290 discloses a teletext receiver for converting received text data into voice and outputting the voice.

Considering the use of teletext regardless of the location or the form of use, it is not sufficient to simply display text information on the screen.
For effective use of character information, it is necessary that the character information can be heard by voice. Thus, the above-mentioned conventional technology has been proposed for the purpose of realizing such a function.

By the way, in the conventional teletext receiving apparatus, when a program in a repetitive program form is designated, it is general that the contents of each page are sequentially displayed, and a series of a plurality of pages are repeatedly displayed. For this reason, there is a problem that the same information is read out many times in the teletext receiving apparatus that performs audio output described in the related art.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has been made in particular to solve the problems of the prior art as described above, and to realize a teletext receiver capable of outputting audio. .

Configuration In order to achieve the above object, the present invention provides a teletext receiving unit that receives a teletext signal, a text sequence extraction unit that extracts a text sequence from text information, and a speech synthesis unit that converts the text sequence to voice. An audio output teletext receiving device comprising a content change detection unit for detecting that a program content has been changed, wherein when the text information is updated, the text device receiving device reads out the updated text information. The character code in the data unit of the received teletext data is compared with the character code in the page buffer corresponding to the position on the screen with respect to the character code. It is characterized by reading out in units of a predetermined sentence, line, word, etc. including a character code. Hereinafter, a description will be given based on examples of the present invention.

FIG. 1 is a diagram for explaining an example in which the present invention is applied to a code transmission (hybrid) type teletext broadcast implemented in Japan. In the drawing, reference numeral 1 denotes a teletext receiving unit, and 2 denotes a pattern memory unit. 3 is a TV screen section, 4 is a character generation section,
Reference numeral 5 denotes a tone generator, 6 denotes a page buffer, 7 denotes a character sequence extracting unit, 8 denotes a voice synthesizing unit, 9 denotes a content change detecting unit, and the teletext receiving unit 1 receives and detects a television wave and performs teletext. Extract data. The pattern memory unit 2 temporarily stores the pixel data in the teletext data and the character pattern generated by the character generator, and outputs it to the television screen unit 3. The character generator 4 receives a character code in a text broadcast, generates a character pattern corresponding to the code, and sends the character pattern to the pattern memory 2. The tone generator 5 receives a tone code in the teletext data and generates a tone corresponding to the code.
Output from speed. The above parts are the same as those of the conventional teletext receiving apparatus, and the detailed description is omitted.

The page buffer 6 stores one or a plurality of pages of teletext data, and stores teletext data from a teletext receiving unit.

The character sequence extracting section 7 reads the contents of the page buffer, rearranges the character codes in the page buffer in an order suitable for converting the character codes into voice, and transfers them to the voice synthesizing section 8. Appropriate units for speech conversion include, for example, paragraphs (which can be determined by the condition of the beginning of a line or a space), lines, sentences (separated by punctuation marks), and codes or patterns other than character codes. Units are conceivable. The proper order for speech conversion is right to left, top to bottom, and so on.

The speech synthesizer 8 outputs a synthesized speech in accordance with the input character sequence, and can use an existing text speech synthesizer.

The content change detector 9 compares the received text broadcast data with the contents of the corresponding page buffer 6, and detects a difference in the contents so as to read out the text broadcast data and read out the text sequence data. The synthesizing unit 8 is controlled.

As a more specific embodiment for detecting a change in the content, a program content update flag of a program data header of received teletext data is compared with a bit in a page buffer corresponding to the program content update flag. Suppose there is a change in content. In this case, the reading is performed in units of programs.

Further, as another embodiment for detecting a change in the content, a page content update bit of the page data header of the received teletext data is compared with a corresponding bit in the page buffer to determine whether the bit is different. Assume that the content has been updated. In this case, the reading is performed in page units.

In the present invention, further, in order to detect a change in the content, attention is paid to updating only a part of the screen, and the character code in the data unit of the received teletext data and the page corresponding to the character code in the position on the screen are displayed. The character codes in the buffer are compared with each other, and if they are different, it is determined that the contents have been changed. In this case, the reading is performed in units of a predetermined sentence, line, word, etc. including the character codes.

Also, as another embodiment of the content change detection unit, a position in a page or a character string is specified in advance,
It is also possible to compare the contents only at the place corresponding to this designation, and to read out in predetermined units if there is a change. As an example of this application, one or a plurality of brands may be designated in advance in a program of a stock market, so that reading is performed when the price of the designated brand fluctuates.

Effect As is apparent from the above description, the teletext receiving apparatus according to the present invention has a content change detection unit and reads out the content when the content is updated. The disadvantages that can occur are eliminated.

[Brief description of the drawings]

FIG. 1 is a configuration diagram for explaining an embodiment of the present invention. 1... Teletext receiving unit, 2... Pattern memory unit, 3.
... TV screen section, 4 ... Character generation section, 5 ... Musical tone generation section, 6 ... Page buffer, 7 ... Character series extraction section, 8
... Voice synthesizer, 9 Content change detector.

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Junko Komatsu 1-3-6 Nakamagome, Ota-ku, Tokyo Inside Ricoh Co., Ltd. (72) Inventor Yuichi Kojima 1-3-6 Nakamagome, Ota-ku, Tokyo (56) References JP-A-58-168393 (JP, A) JP-A-58-27488 (JP, A) JP-A-58-33380 (JP, A) (58) Fields investigated ( Int.Cl. ⁶ , DB name) H04N 7/025-7/088 G10L 3/00

Claims (1)

(57) [Claims] 1. A teletext receiving unit for receiving a teletext signal, a text sequence extracting unit for extracting a text sequence from text information, a voice synthesizing unit for converting a text sequence into voice, and a program content changing unit. A text broadcast receiving apparatus capable of outputting audio and comprising a content change detection unit for detecting, wherein when the text information is updated, the text broadcast receiving apparatus that reads out the updated text information, The character code in the unit is compared with the character code in the page buffer corresponding to the position on the screen. If the character code is different, it is determined that the content has been changed. A teletext receiving apparatus which reads out a sentence in units of sentence, line, word and the like.