JP2008278199A - Television receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a novel setting technique about a character size of a caption. <P>SOLUTION: This television receiver starts processing (Start) in a step S1, and checks the existence/absence of caption display in a step S2. If the caption display exists (YES), an advance is made to a step S3 to detect sound volume. Next, whether the sound volume is larger than a reference value α is determined in a step S4, when the sound volume is larger (YES), an advance is made to a step S5 to change the character size of the caption in accordance with the sound volume as in Figure 3, and the processing is ended in a step S6. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a television receiver, and more particularly to a television receiver having a caption display function.

  In a television receiver having a caption display function, when video signals are supplied to a display device and screen display is performed, character data is combined with the original video signals and displayed. For example, when a movie is displayed, movie subtitles are synthesized with the original video signal. In addition, when displaying a sports broadcast, the score information is combined with the original video signal. Thus, combining and displaying the character data on the video signal is extremely effective for the viewer to understand the screen. Character data combined with the video signal and displayed is created by the video signal producer and supplied to the display device.

  In general, a menu is provided with an item that allows selection of a large, standard, and small subtitle character size so that the user can switch the subtitle character size.

  The technique described in Patent Document 1 displays character data of an optimal size selected according to the characteristics of the display device.

JP 2001-69418 A

  When the subtitle character size is set from the menu screen, there is a problem that the user must manually set the subtitle character size as necessary. Moreover, when it is set according to display characteristics, there is a problem that individual differences are not taken into consideration. For example, there is a difference in visual acuity depending on age and individual, and if the character size is determined uniformly in terms of hardware, these differences are not taken into consideration.

  An object of this invention is to provide the new setting technique regarding the character size of a subtitle.

The size of the subtitle character is linked to the size of the volume, and the subtitle character size is automatically increased if the volume is high.
That is, according to one aspect of the present invention, a television receiver having a subtitle display function is configured to increase the size of a subtitle to be displayed as the volume increases, based on the volume currently being output or the set value of the volume. There is provided a television receiver characterized in that it has a subtitle character size changing unit for controlling in a direction to perform. Thus, a mode in which the subtitle character size automatically increases when the volume is set high can be provided. Furthermore, it is preferable to maintain the correspondence between the volume and the subtitle character size. Thereby, the character size can be easily adjusted. Furthermore, it is preferable to provide a volume detection unit that detects the volume. The volume detection unit may detect the volume based on a set value of a remote control device.

  The subtitle character size changing unit controls a default character size up to a certain sound volume threshold value, and performs control to increase the character size based on an increase in sound volume when the threshold value is exceeded. You may apply the technique as described above to the portable terminal provided with the television receiver. A program for performing the above control is also within the scope of the invention.

  In the television receiver, the subtitle character size can be automatically adjusted so that the elderly can easily read the subtitle.

  The inventor has focused on the fact that there is a certain degree of correlation between human hearing and visual acuity. For example, statistically, visual acuity and hearing tend to decrease with age. Therefore, the inventor, in a television receiver having a caption display function, when caption broadcasting is output, according to the volume setting, if the volume is set higher than a certain reference value, In response, I came up with the idea of controlling the subtitle text size to be larger.

  Hereinafter, a television receiver according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a functional block diagram showing a configuration example of the digital broadcast receiving apparatus according to the present embodiment. As shown in FIG. 1, the digital broadcast receiving apparatus according to the present embodiment includes a front end 1 that receives and processes broadcast waves acquired from an antenna, and a demultiplexer 3 that separates broadcast waves into video / audio data and caption information data. A decoder 5 that decodes video / audio data, an audio output unit 7 that outputs a decoded audio signal, a subtitle information decoding unit 11 that decodes subtitle information output from the demultiplexer 3, and decoded subtitle information Subtitle data generating unit 15 for generating subtitle data based on the above, a screen synthesizing unit 17 for synthesizing the generated subtitle data and the video obtained and output from the decoder 5, and a display unit 21 for displaying the synthesized video ,have. Furthermore, it has a remote control light receiving unit 23 that receives a remote control signal, a control unit 25 that controls the whole, a memory unit 27 that stores various data, and a volume detection unit 29 that detects volume.

  The subtitle data generation unit 15 is provided with a subtitle character size changing unit 15a that can change the subtitle character size, and the memory unit 27 has a volume-subtitle character size table 27a indicating a correspondence relationship between the volume and the subtitle character size. Is provided. The sound volume detection unit 29 may detect a sound volume that is actually output, or may detect sound volume setting data in the remote controller included in the remote control signal received from the remote control light receiving unit 23. FIG. 2 is a diagram illustrating a configuration example of a general remote control device 31, which includes an operation button 37 and a volume adjustment button 35 that increases and decreases the volume. Based on the adjustment value of the volume adjustment button, the volume detection unit 29 can detect the current volume.

  FIG. 3 is an example of a graph showing the volume-caption character size table 27a. As shown in FIG. 3, for example, the horizontal axis represents the volume, the vertical axis represents the caption character size, and the volume is configured to have a standard caption character size at the standard value (default value) α. In the example shown in FIG. 3, the subtitle character size is set to the standard value in a region with a volume lower than that at the volume α, and the subtitle character of MAX is used in a region with a volume larger than α, for example, as indicated by L1. Controlled to size. Alternatively, as shown at L3, the subtitle character size may be increased proportionally from the volume α to MAX, or the subtitle character size may be increased stepwise as indicated by L2. . When the age or the like is input from the remote control, the α value may be changed.

  FIG. 4 is a flowchart showing a flow of processing of the subtitle character size control function according to the present embodiment. As shown in FIG. 4, first, processing is started in step S1 (Start), and in step S2, the presence / absence of caption display is checked. If caption display is present (YES), the process proceeds to step S3, and the volume is detected. Next, in step S4, it is determined whether or not the volume is larger than the reference value α. If the volume is larger (YES), the process proceeds to step S5, and the subtitle character size is changed as shown in FIG. 3 according to the volume. In step S6, the process ends. With regard to subtitles, there is a general method in which several types of character sizes that can be used are defined in advance as a standard, and the broadcast station specifies one of the character sizes in the content.

  Regarding the volume, it is preferable to relate the average volume obtained by detecting a certain amount of time rather than the instantaneous volume and the size of the caption. Further, in the television receiver, it is preferable to provide an on / off menu for the elderly function in the menu so that the above control is performed when the elderly function is on.

  The present invention can be used for a television receiver. It can also be used for portable terminals equipped with a television receiver.

It is a functional block diagram which shows one structural example in the digital broadcast receiver by one embodiment of this invention. It is a figure which shows the structural example of a general remote control apparatus. It is the example which showed the volume-caption character size table with the graph. It is a flowchart figure which shows the flow of a process of the subtitle character size control function by this Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Front end, 3 ... Demultiplexer, 5 ... Decoder, 7 ... Audio | voice output part, 11 ... Subtitle information decoding part, 15 ... Subtitle data generation part, 15a ... Subtitle character size change part, 17 ... Screen composition part, 21 ... Display unit 23... Remote control light receiving unit 25. Control unit 27 27 Memory unit 27 a Volume-subtitle character size table 29 29 Volume detection unit

Claims (6)

A television receiver having a caption display function,
A television receiving apparatus comprising: a subtitle character size changing unit that controls a size of a subtitle to be displayed as the volume increases, based on a volume currently being output or a set value of the volume.   The television receiver according to claim 1, further comprising a correspondence relationship between the volume and the subtitle character size.   The television receiver according to claim 1, further comprising a volume detector that detects a volume.   4. The television receiver according to claim 3, wherein the volume detector detects the volume based on a set value of a remote control device.   5. The subtitle character size changing unit performs control to increase the character size based on an increase in sound volume when the default character size is set up to a certain sound volume threshold and the threshold is exceeded. The television receiver according to any one of the above.   The portable terminal provided with the television receiver of any one of Claim 1-5.

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