JPH02230189A - Video selective display device - Google Patents

Abstract

PURPOSE:To easily attain screen selection only by operating a key switch, etc., toward a display screen by providing a screen indicator and an instruction direction detecting means when a required screen is selected from the plural screens displaying videos. CONSTITUTION:The video display device 32 displays the plural videos by corresponding the plural screens. An identification mark display means 35 displays an identification mark whose identification code is modulated on a part of the screen. When a light receiving means 37 receives the specific identification mark by operating the screen indicator 33, a screen code demodulating means 36 demodulates and selects a light receiving signal to obtain the code of the selected screen. A video switching control means 31 switches video display condition to the selective screen responding to the screen code. In such a manner, the indicator 33 is used for indicating the direction of the identification mark displayed on the display device 32 and for operating the key switch, etc., so that the screen can be easily selected.

Description

DETAILED DESCRIPTION OF THE INVENTION (AL Industrial Field of Application) This invention relates to a video selection display device which displays a plurality of videos on a plurality of screens and switches the video display content by selecting a desired screen from the plurality of screens. Regarding.

(b) Conventional technology Conventionally, for example, a plurality of color cathode ray tubes are arranged in a matrix to form a set of image display devices, and each cathode ray tube displays a different image, or the entire display device is used as one screen to display images. A display device is used.

This type of display device is used, for example, to display travel information by installing it inside a station, or to introduce products or display advertisements installed in a store.

(C) Problems to be Solved by the Invention In such a video display device that can display a plurality of images at the same time, the objective can be achieved by selecting a desired screen from a plurality of screens displaying a plurality of images. It can be used actively by sequentially recalling the contents. In this case, one possible method for selecting a desired screen from a plurality of screens displaying different images is to use key operations on a remote control transmitter, similar to a TV channel remote control. However, with that method,
The number of the screen to be selected must be checked each time for the screen of the display device and the push button of the remote control transmitter, which does not necessarily provide good operability.

An object of the present invention is to provide a video selection display device that allows a desired screen to be selected from a plurality of screens displaying images by an extremely simple operation.

(d) Means for Solving the Problems A video selection display device according to claim 1 of the present invention comprises: a video display device that displays a plurality of videos in correspondence with a plurality of screens; In a video selection display device comprising screen selection means for selecting a desired screen, and video switching control means for switching video display contents according to the selected screen, the screen selection means is configured to select a screen to be selected of the video display device. The present invention is characterized by comprising a screen indicator pointing in the direction of the screen indicator, and pointing direction detection means for detecting the pointing direction of the screen indicator.

In the video selection display device according to claim 2 of the present invention, the screen indicator is provided with a light receiving means, and the pointing direction detecting means is provided.
An identification mark display control means for displaying a code-modulated identification mark for identifying the display screen on a part of each display screen, and a screen code demodulation means for demodulating a code for identifying the display screen from the light reception signal of the light reception means. It is characterized by

Furthermore, the video selection display device according to claim 3 of the present invention includes:
In addition to providing a directional transmitter on the screen indicator,
The pointing direction detecting means is composed of a plurality of wave receivers arranged two-dimensionally in the vicinity of the video display device, and a received signal processing means for determining the screen to which the screen indicator is directed from the output level of each of these wave receivers. It is characterized by

(8) Operation In the video selection display device according to claim 1 of the present invention, the screen instruction is performed by pointing the screen indicator in the direction of a predetermined screen of the video display device, and the pointing direction detecting means detects the direction of the screen indicator. Detect the pointing direction. Therefore, screen selection is performed simply by pointing in the direction of the screen to be selected using the screen indicator, and the video display content is switched in accordance with the selected screen.

In the video selection display device according to claim 2 of the present invention, the identification mark display control means causes a code-modulated identification mark for display screen identification to be displayed on a part of each display screen. On the other hand, the light receiving means provided in the screen selection means receives light from the display portion of the identification mark, and the screen code demodulating means demodulates the received light signal into a code for identifying the display screen.

The configuration is shown in FIG. 1(A). As shown in the figure, the video display device 32 displays a plurality of videos in correspondence with a plurality of screens using a video signal from the video transmitting device. A code-modulated identification mark for identifying the display screen is displayed on a part of the display screen. When the light receiving stage 37 receives a specific identification mark by operating the screen indicator 33°, the screen code demodulating means 36 demodulates the received light signal to obtain the code of the selected screen. The video switching control means 31 switches the video display state according to the obtained screen code.

The video selection display device according to claim 3 of the present invention, in which the display screen can be directly selected by pointing in a direction and operating a key switch, generates a directional signal (such as an ultrasonic wave or (infrared rays, etc.) are transmitted. A plurality of receivers arranged two-dimensionally in the vicinity of the video display device receive these signals, and the transfer signal processing means determines the screen to which the screen indicator is directed from the output level of each receiver.

The configuration is shown in FIG. 1(B). In this example, four receivers 40a to 40d are provided at the four corners of the video display device 32, and receive signals transmitted from the screen indicator 33.

The pointing direction detecting means 34 determines the pointing direction of the screen indicator 33 with respect to the video display device 32 from the output level of each of the receivers 40a to 40d, and determines the selected screen. The video switching control 1000 stages 31 switches the video display content according to the selected screen.

(f) Embodiment FIGS. 3 and 4 are block diagrams of a video selection display device according to an embodiment of the present invention. FIG. 3 is a block diagram of a video display device and a control device connected thereto, and FIG. 4 is a block diagram of a screen selection device.

In FIG. 3, the personal computer 1 has a receiving circuit 2.
Various commands, which will be described later, are given to the main controller 4 in response to signals received from the main controller 4. The receiving circuit 2 receives a transmission signal from a screen selection device (described later) via an antenna 3, and outputs selected screen code data to the personal computer 1. Main controller 4 provides control signals to a plurality of video disc devices 5a to 5p, and also outputs control signals to mark adding circuits 6a to 6p, multi-video controller 7, and audio signal selector 9.

The video disk devices 5a to 5p are the main controller 4
Different video disks are played back according to control IB signals given from the controller. Specifically, each chapter number is received from the main controller 4, and the video of the designated chapter number is played back.

The mark adding circuits 6a to 6p are connected to the video disc devices 5a to 6p.
This is a circuit that superimposes a display screen identification mark on the video signal output from the 5p, and displays an identification mark modulated into a different code for each screen on a part of the display screen. Whether or not to display this identification mark is switched by a control signal from the main controller 4.

The multi-video controller 7 includes mark adding circuits 6a to 6.
A playback signal from an original video disc device with an identification mark superimposed on it or without an identification mark superimposed thereon is inputted by p, and a video signal is sent to the video display device 8 in accordance with a control signal from the main controller 4. Output. Specifically, the multiple inputs. Either output the video signal as it is so that it corresponds to each screen of the monitor TV, or output the video signal so that the video of a specific input signal among the input video signals is displayed as one screen on the entire video display device. is processed and each video signal is sent to each monitor T.
Output to V.

The video display device 8 is 16 monitor TVs shown as 8a to 8p.
are arranged in a 4x4 matrix.

The audio signal selector 9 receives each audio signal output from the video disk devices 5a to 5p, and outputs a specific audio signal in response to a control signal from the main controller 4.

The amplifier 10 amplifies this audio signal and outputs the sound through the speakers lla and llb.

In FIG. 4, 20 is a condensing lens, 21 is a light-receiving element such as a phototransistor, and 22 is an amplifier circuit for amplifying the light-receiving signal obtained by the light-receiving element 21. In FIG. The waveform shaping circuit 23 shapes the waveform of the amplified light reception signal into a logic level signal.

Reference numeral 24 is a one-chip microcomputer, which is equipped with a ROM in which a program is written and a RAM used as a working area for temporarily storing received light signals. Reference numeral 25 denotes a push button key switch, which is used for switching to the screen selection mode and selecting the screen. 2
6 transmits screen code data or select mode code data, which will be described later, to the antenna 2 by high-frequency modulating the serial signal output from the microcomputer 24.
Send via 7.

FIGS. 2(A) to 2(C) are display examples of the monitor TV 8 shown in FIG. 3. However, the display example is only a pattern for explaining the operating state. In the state shown in FIG. 2(A), each of the 16 display devices is displaying a separate image.

A mode in which any screen is selected in this state (hereinafter referred to as select mode).

), the display state shown in FIG. 2(B) is obtained.

Here, Ma'=Mp is an identification mark displayed in the lower left area χ of each screen, and the key switch 25 is operated by pointing the screen selection device shown in FIG. 4 toward the identification mark of the screen to be selected. Screen selection is performed by this. For example, when the identification mark Mf is specified, a more detailed image of the image displayed on the screen is shown in Figure 2 (C
) is displayed on the entire display device.

Figure 5 shows an example of modulation of identification marks in select mode. As shown in the figure, all data consists of 12 bits, starting with a start bit of 11 1 P+, followed by a 4-bit code data and an end bit of ``0''.
It follows, and 6 bits of "0" are added after it. Here, lbit is the time for one field of the video signal, that is, the period of 1/60 second. The screen selection device is 6
The first bit 'J' of consecutive bits of '0' is set as a start bit, and the following <4 bits are demodulated as screen code data.

Next, the processing procedure of the one-chip microcomputer 24 of the screen selection device shown in FIG. 4 and the processing procedure of the personal computer 1 shown in FIG. 3 are shown in FIGS. 6 and 7.

As shown in FIG. 6, the screen selection device first determines the operating state of the key switch 25 (ml).

Once the key switch 25 is turned on, the light reception signal is stored for a certain period of time (n2). This fixed time is at least 24 bits of time, ie, 24/60=0.4 seconds. The sampling period when reading this light reception signal is 1/60 second or less. From the data of the light reception signal read in this way, the fifth
As shown in the figure, 4 bits of code data sandwiched between the start bit and end bit are extracted (n3). At this time, if 4 bits of code data can be extracted, that data is transmitted as is (n4→n5). If the key switch 25 is operated when the mode is not in the select mode, or if the key switch 25 is operated with the light receiving section facing in a direction other than the identification mark, 4 bits of code data will not be extracted. In this case, a select mode code for switching the display mode to select mode is transmitted (n4→n6).

On the other hand, as shown in FIG. 7, the personal:1 monitor 1 first determines the presence or absence of a signal from the receiving circuit 2, and if there is a received signal, reads the received data (n10→n11). If the data is not screen code data but select mode code data, a control signal for displaying the identification mark is output as shown in Figure 2 CB) (n12→
nl3→n14). Next, the video disc device 5a~
A control signal is output so that the first chapter of all video discs set to 5p is played back (nl5). As a result, as shown in FIG. 2(B), different images are displayed on each monitor TV of the display device together with an identification mark. A so-called digest version of the contents recorded on each video disc is recorded in each first chapter of the video disc. Thereafter, a flag F1 is set to remember that it is the select mode (nl6). It is assumed that F1 is initially in a reset state.

Now, in this selection mode, when the personal computer reads the screen code data by operating the switch on the screen selection device, it first cancels the display of the identification mark and resets the flag Fl (n 1 2→
nl7→nl8). Subsequently, the screen code data is output to the main controller 4 (n19→n20). As a result, the video disc device corresponding to the selected screen starts playing the second video, and the multi-video controller 7 causes the video to be displayed on the entire display device. Furthermore, the audio signal selector 9 outputs the audio signal to the amplifier 10. The second chapter of each video disc records video, which is the main content. Therefore, the specific content of the video displayed on the selected screen is displayed on the entire display device (see FIG. 2(C)).

If the select mode code data is received when the flag F1 is in the set state, that is, in the select mode,
First, the identification mark display control signal is released, and all video disk devices output a control signal so as to reproduce the first chapter (nl3→n21→n22). After that, the flag F1 is reset (n23). This results in Figure 2 (
As shown in A), the identification mark is not displayed. Furthermore, when transmitting the screen code data, data for error confirmation/correction such as parity bits is added, and by repeating the transmission multiple times, the reception It is also possible to check and correct data errors on the side.

An embodiment according to claim 3 of the present invention will be described below.

FIG. 8 is a block diagram showing the main parts of the pointing direction detection means 34 shown in FIG. 1(B). In FIG. 8, 40a to 40d are ultrasonic microphones when ultrasonic waves are transmitted from the screen indicator (see FIG. 1(B)), and are infrared receivers when infrared rays are transmitted. 41a to 41d are 4
an amplifier circuit for amplifying each output signal of 0a to 40d; 42;
A to 42d are low-pass filters for determining the amplitude strength of the amplified signal. Further, 43a to 43d are demodulation circuits, respectively, which determine the presence or absence of digital code data included in the received signal or simply a carrier signal. 44
is a multiplexer that selectively outputs each output signal of the low-pass filters 42a to 42d to the A-D converter 46;
A multiplexer 45 selects the outputs of the demodulation circuits 43a to 43d. 47 is an I/0 board which is a part of the microcomputer, and outputs switching signals to multiplexers 44 and 45 at necessary timings, and
．． - Input the output data of the D converter 46 and the digital code data output from the multiplexer 45 or a signal indicating the presence or absence of a carrier signal.

In this way, the pointing direction of the screen indicator is determined from the difference or ratio of the output levels of a plurality of receivers two-dimensionally arranged in the vicinity of the video display device, and the selected screen is thereby identified.

In this embodiment, ultrasonic microphones or light receivers are provided at the four corners of the video display device, but the detection resolution of the pointing direction of the screen indicator can also be increased by placing them, for example, at the corners of each screen.

In the embodiment, different images are displayed on each screen of the video display device, and when a certain screen is selected, the specific content of the video displayed on that screen is switched and displayed on the entire video display device. However, the present invention is not limited to this, and can be applied to devices in general that switch the video display state by selecting a plurality of screens on which video is displayed. Furthermore, the switching of video display is not limited to two stages, and can also be used for applications such as sequentially selecting and displaying videos in a hierarchical structure from large items to medium items and small items, such as in an illustrated book.

In addition, although a plurality of video disc devices were used as the video transmission device in the embodiment, for example, by using one video disc device and displaying a still image as an index on each screen in the select mode, it is possible to perform screen selection. It is also possible to switch to a video display that displays

(Effects of the Phantom Invention As described above, according to this invention, when selecting a desired screen from a plurality of screens displaying images, it is only necessary to point the light receiving section at the display screen and operate a key switch etc. There is no need to perform confirmation operations such as screen numbers, and screen selection can be performed extremely easily.

[Brief explanation of the drawing]

Figure 1 (A). (B) is a diagram showing the configuration of the present invention. FIGS. 2A to 2C are diagrams showing display examples of a video selection display device according to an embodiment of the present invention. FIG. 3 is a block diagram of a video display device and a control circuit connected thereto. FIG. 4 is a block diagram of the screen selection device. FIG. 5 is a diagram showing an example of code modulation of an identification mark. FIG. 6 is a flowchart showing the processing procedure on the sending side (screen selection device), and FIG. 7 is a flowchart showing the processing procedure on the receiving side. FIG. 8 is a block diagram of main parts of a pointing direction detection device according to another embodiment of the present invention. Applicant Telesystems Ltd.

Claims (3)

[Claims] (1) A video display device that displays a plurality of images in correspondence with a plurality of screens; a screen selection means that selects a desired screen from the plurality of screens on which images are displayed; and video display content according to the selected screen. A video selection display device having a video switching control means for switching the screen selection means, a screen indicator that points the screen in the direction of the screen to be selected of the video display device, and a pointing direction that detects the pointing direction of the screen indicator. A video selection display device comprising detection means. (2) identification mark display control means for providing a light receiving means in the screen indicator and displaying a code-modulated identification mark for identifying the display screen on a part of each display screen; 2. The video selection display device according to claim 1, further comprising screen code demodulation means for demodulating a code for identifying a display screen from a signal. (3) In addition to providing a directional transmitter in the screen indicator, the directional direction detection means is based on a plurality of receivers arranged two-dimensionally near the video display device and the output level of each of these receivers. 2. The video selection display device according to claim 1, further comprising received signal processing means for determining the screen to which the screen indicator points.