JPH03214983A - Teletext receiver - Google Patents

Abstract

PURPOSE:To avoid a disadvantage of a conventional receiver sounding same content for many number of times by providing a content change detection section to a teletext receiver capable of sound output and sounding the content when it is revised. CONSTITUTION:A teletext reception section 1 receives and detects a television radio wave to extract a character broadcast data. A content revision detector 9 compares received character broadcast data with a content of a page buffer 6 corresponding thereto to control a character series extraction section 7 and a voice synthesis section 8 thereby sounding a character broadcast data when the difference from the content is detected. For example, a program content revision flag of a program data header of the received character broadcast data and a bit in a page buffer corresponding thereto are compared, and when they are different, it is discriminated that the content is revised. In this case, the sounding is implemented in the unit of programs.

Description

[Detailed description of the invention] Chikuho branch Sara The present invention relates to a teletext receiving device capable of outputting audio.

BACKGROUND ART Television teletext broadcasting (hereinafter abbreviated as r-telecasting) has been put into practical use in which codes or pixel data are superimposed and transmitted during the vertical blanking period of a television video signal. Conventional teletext receiving devices have built-in generators for text, graphics, and musical tones, decode received codes or pixel data, and output the decoded data from a television screen or speaker.

Incidentally, Japanese Patent Application Laid-open No. 148290/1983 discloses a teletext receiving apparatus that converts received character data into audio and outputs it.

Considering the use of teletext regardless of location or usage format,
It is not enough just to display textual information on the screen. For effective use of text information, it is necessary to be able to hear text information in the form of audio. The above-mentioned conventional technology was proposed for the purpose of realizing such a function.

By the way, conventional teletext receiving apparatuses generally display the contents of each page in sequence when a repetitive program type program is specified, and repeatedly display a series of a plurality of pages. Therefore, the teletext receiving device that outputs audio as shown in the prior art has the problem of reading out the same information over and over again. ,
In particular, this invention has been made with the aim of realizing a teletext receiver capable of outputting audio, which solves the problems of the prior art as described above.

1-1 In order to achieve the above object, the present invention provides a teletext receiving unit that receives a teletext signal, a character sequence extraction unit that extracts a character sequence from character information, and a speech synthesis unit that converts the character sequence into speech. A teletext receiving device capable of outputting voice, which is equipped with a content change detection unit for detecting a change in program content, and is characterized in that the updated text information is read aloud when the text information is updated. That is. Hereinafter, the present invention will be explained based on examples.

FIG. 1 is a diagram for explaining a first embodiment in which the present invention is applied to code transmission (hybrid) type teletext broadcasting implemented in Japan. In the figure, 1 is a teletext receiving section, 2 is a pattern Memory section, ゜3 is the TV screen section, 4 is the character generation section, 5 is the musical sound generation section, 6 is the page buffer, 7 is the character sequence extraction section, 8 is the speech synthesis section, 9 is the content change detection section. The receiving unit 1 receives and detects television radio waves, and extracts teletext data. The pattern memory section 2 temporarily stores pixel data in teletext data and character patterns generated by a character generator, and outputs them to the television screen section 3. A character generating section 4 receives a character code during teletext broadcasting, generates a character pattern corresponding to the code, and sends it to a pattern memory section 2.

The musical tone generator 5 receives the musical tone code in the teletext data, generates a musical tone corresponding to the code, and outputs it from a speaker. The above portions are the same as those of the conventional teletext receiving device, and detailed explanation will be omitted.

The page buffer 6 stores one or more pages of teletext data, and stores teletext data from the teletext receiver.

The character sequence extracting unit 7 reads the contents of the page buffer, rearranges the character codes therein in an order appropriate for converting them into speech, and transfers them to the speech synthesizing unit 8. Appropriate units for audio conversion include paragraphs (can be judged based on conditions such as whether it is at the beginning of a line or a space), lines, sentences (separated by periods), and words separated by codes or patterns other than character codes. Possible units include units. Reasonable orders for voice conversion are right to left, top to bottom, etc.

The speech synthesis section 8 outputs synthesized speech according to the input character sequence, and can use an existing text-to-speech synthesizer.

The content change detector 9 compares the received teletext data and the content of the corresponding page buffer 6, and when a difference in content is detected, the content change detector 9 controls the character sequence extraction unit 7 and the text data to read out the teletext data. It controls the speech synthesis section 8.

As a more specific example of detecting a content change, the program content update flag in the program data header of the received teletext data is compared with the corresponding bit in the page bus sofa, and if they are different, Suppose that there is a change in the contents. In this case, reading is performed on a program-by-program basis.

Another example of detecting content changes is to compare the page content update bit of the page data header of the received teletext data with the corresponding bit in the page buffer, and detect if they are different. Assume that the contents have changed. In this case, reading is performed page by page.

In addition, as another example of detecting a change in content, the character code in the data unit of the received teletext data,
This is compared with the character code in the page buffer corresponding to the position on the screen, and if there is a difference, it is assumed that the content has changed. In this case, reading is performed in units of predetermined sentences, lines, words, etc. that include the character code.

In addition, as another example of the content change detection unit, it is possible to specify the position in the page or character string in advance, compare the content only at the part corresponding to this specification, and if there is a change, read it out in predetermined units. You can also do this. An example of this application would be to designate one or more stocks in advance on a stock market program so that the part would be read aloud when the price of the designated stocks fluctuates.

As is clear from the above description, the teletext receiving device according to the present invention includes a content change detection unit and reads out the content when it is updated. This eliminates the drawback of having to read it out loud over and over again.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram for explaining one embodiment of the present invention. 1... Teletext receiving section, 2... Pattern memory section,
3...TV screen section, 4...Character generation section, 5...
Musical sound generation section, 6... Page buffer, 7... Character sequence extraction section, 8... Speech synthesis section, 9... Content change detection section.

Claims (1)

[Claims] 1. A teletext receiving unit that receives a teletext signal, a character sequence extraction unit that extracts a character sequence from character information, a speech synthesis unit that converts the character sequence into audio, and a content that detects that the program content has changed. What is claimed is: 1. A teletext receiving device that is capable of outputting audio and is equipped with a change detection unit, and is characterized in that the updated text information is read aloud when the text information is updated.