JP3414081B2 - Video display device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video display device capable of controlling display switching of a plurality of video displays such as television, text broadcasting, and CD ROM reproduction. 2. Description of the Related Art Conventionally, a video display device capable of controlling display switching of a plurality of video displays is disclosed in Japanese Patent Application Laid-Open No. 58-147.
No. 286, "Image Information Terminal Device". According to the present invention, a text broadcast is always displayed, and when a captain signal is input from a telephone line, the display is switched to a captain display. [0003] When the display switching control of the teletext, television, and CDROM is performed by using the conventional technology, there are the following problems, respectively. [0004] In the case of switching from TV to teletext • Since the teletext input signal is always received, it cannot be used as a signal for switching from TV to teletext. [0005] When switching manually, a switching operation is required.・ Since the display resolution of TV broadcast and teletext is the same,
When teletext is displayed on a multi-screen, characters are difficult to see. [0008] The present invention solves the above-mentioned problems. [0009] The display can be automatically and effectively switched from TV to teletext, and the display is switched between teletext display and TV display. It is possible to provide a video display device in which the resolution is automatically changed and the text display of the teletext is easy to see. [0009] In order to solve the above problems, a video display device of the present invention uses a stereo monaural signal at the time of television reception in a video display device for performing text broadcasting and television display. the character broadcast display and TV display
Switch and display resolution according to the switch
It is characterized by automatically changing the degree . According to the present invention, the display switching from TV to teletext is automatically performed, and teletext display and TV table display are performed.
The display resolution can be automatically changed between
A video display device that displays a display resolution that is easy to see . A video display device according to a first aspect of the present invention receives a text broadcast and outputs a text display signal.
Character broadcast receiving means, and television for receiving television broadcasts.
Television broadcast receiving means for outputting a display signal, and a character table
High resolution display for display signals and low resolution for TV display signals
Display means capable of displaying, and the television broadcast receiver
Whether the program received at the stage is stereo or monaural
Detecting means for detecting whether or not
The character display signal output by the teletext receiving means and
The character display signal output by the television broadcast receiving means
Select and switch one of them, and in conjunction with the switching,
Display resolution switching for controlling the display resolution of the display means
Teletext broadcasting.
The display must be high resolution and the television display must be low resolution.
It is difficult to see characters even in multi-screen display of teletext display.
Those having an effect called can be eliminated. [0014] [0015] [0016] [0017] [0018] [0019] (Embodiment 1) Hereinafter, a first embodiment of the invention described in claim 1 of the present invention with reference to FIG. 1 explained I do. In FIG. 1, reference numeral 1 denotes a character receiving section for decoding a teletext and outputting it as a video signal, 2 a television broadcast receiving section for receiving a television signal and outputting it as a video signal, and 3 a teletext receiving section 1 And a display switching unit for switching and outputting one of two input video signals output from the television broadcast receiving unit 2 and a display unit for displaying a video signal output from the display switching unit 3. This is a stereo / monaural signal detection unit that detects whether the audio signal of the program received by the reception unit 2 is a monaural signal or a stereo signal. In the above configuration, the display switching unit 3 performs a switching operation based on the result detected by the stereo / monaural detection unit 5. The switching operation outputs a video signal input from the television broadcast receiving unit 2 at the time of a monaural signal,
At the time of a stereo signal, a switching operation is performed so that a video signal input from the teletext receiving unit 1 is output to the display unit 4. This is based on the fact that in current television broadcast programs, broadcast programs are often sent as monaural signals, and commercials are often sent as stereo signals. By this operation, the user watches the television broadcast when receiving the program, and automatically switches to the teletext display when receiving the commercial, so that the teletext can be watched. Hereinafter, a second embodiment of the invention will be described with reference to FIG.
This will be described with reference to FIG. In FIG. 2, reference numerals 1 to 4 are the same as those in the first embodiment except that the display unit 4 is a display unit having at least two display resolutions. The display resolution switching unit switches the resolution of the display unit 4 according to the operation. In the above configuration, the operation of the display resolution switching unit 6 is such that when the display switching unit 3 displays the video signal of the teletext receiving unit 1, the display unit 4 switches to the higher resolution, and the video of the television broadcast display 2 is switched. When displaying a signal, the display of the display unit 4 is performed at a low resolution. With this operation, characters displayed at the time of receiving a text broadcast can be displayed at a high resolution, so that the characters can be easily viewed.
Characters are easy to read even when the teletext screen is multi-displayed. Hereinafter, a third embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG. In FIG. 3, reference numeral 4 denotes the same configuration as in the first embodiment, reference numeral 7 denotes a CD reproducing unit capable of reproducing display images such as music CDs and video CDs, and reference numeral 8 denotes a CD reproduced by the CD reproducing unit 7. A music CD detection unit 9 for automatically discriminating the music CD is a display unit 4 according to the detection result of the music CD detection unit 8.
This is a display system power supply control unit for turning on / off the power of the display. In the above configuration, the operation of the display system power supply control unit operates so as to turn off the power of the display unit 4 when the detection result of the music CD detection unit 8 is a music CD. According to this operation, when a music CD is reproduced, the power of the display unit 4 is turned off to reduce power consumption. [0030] As is evident from the foregoing description, according to the video display device of the present invention, it can be switched efficiently and automatically television and teletext, and user convenience improves, teletext table
Display can be displayed at high resolution, which reduces the legibility of characters.
Since it is not changed, the teletext display is improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram illustrating a configuration of a video device according to Embodiment 1 of the present invention. FIG. 2 is a block diagram illustrating a configuration of a video device according to Embodiment 2 of the present invention. A block diagram showing a configuration of a video apparatus according to Embodiment 3 of the present invention. [Description of References] 1 Teletext broadcast receiving section 2 Television broadcast receiving section 3 Display switching section 4 Display section 5 Stereo / monaural signal detecting section 6 Display resolution Switching control unit 7 CD playback unit 8 Music CD detection unit 9 Display power supply control unit

──────────────────────────────────────────────────の Continuing on the front page (72) Haruko Ishigami, Inventor 1006 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Inventor Mitsunori Ueda 1006 Odaka Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co. (72) Inventor Akira Masuda 1006 Kadoma Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. (72) Inventor Norihiro Kikuchi 1006 Odaka Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd. (56) References JP-A-5-199470 (JP, A) JP-A-5-316440 (JP, A) JP-A-7-115594 (JP, A) JP-A-7-184132 (JP, A) JP-A-7-107403 (JP, A) JP-A-59-74788 (JP, A) JP 4-27758 (JP, B2) (58) Fields investigated (Int. Cl. ⁷ , DB name) H04N 7/00-7 / 088 H04N 5/38-5/46 H04B 1/06 H04B 1/16 G09G 5 / 00-5/40

Claims (1)

(57) [Claims] [Claim 1] Receiving a teletext and outputting a text display signal
Teletext broadcast receiving means,
Television broadcast receiving means for outputting a television display signal;
High resolution display for character display signal and low resolution for TV display signal
Display means capable of displaying image resolution;
Whether the program received by communication means is stereo or monaural
Detection means for detecting whether or not
A character display signal output by the teletext receiving means in response to the
Character display signal output by the television broadcast receiving means
Selective switching of either of the above and linked with the above switching
The display resolution to control the display resolution of the display means.
An image display device comprising a switching means.