JPS6259477A - Television set - Google Patents

Abstract

PURPOSE:To efficiently exchange picture by jumping a TV signal of a channel difficult to look at in a subordinate picture, automatically sequentially selecting a channel out of all channels, exchanging with a master picture in one operation with respect to a desired channel and stopping. CONSTITUTION:To a channel selection device 13, a successive channel selection device 35 for receiving an instruction of a successive channel selection start instruction circuit 34 consisting of, for instance, a remote control device is connected. The circuit 13 controlled thereby successively selects TV signals inputted from an antenna and projected on a subordinate picture. The device 35 discriminates a defect of a channel, and in order to jump over this, discriminates 40 the existence of a signal of a selected n-th channel or the difficulty to see by the use of a horizontal synchronous pulse synchronously separated from a synchronous circuit 23. When this discriminating output means to have no signal or be unclear or the like, the n-th channel is jumped over and the n+1th channel is selected to jump and control 39.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to input television signals coming from the antenna of a color television receiver and other video equipment such as video tape recorders, video disk players, television cameras, personal computers, etc. ) signals from 1 at the same time
This invention relates to a television device that displays images on one screen.

Background of the Invention In recent years, the spread of video equipment has been remarkable, and television receivers that connect to a television receiver and display input television signals from an antenna on a single screen at the same time have become important. . A method of displaying two different images at the same time on one television receiver has been attempted for some time. It is possible to display the television signal coming from the antenna input of a stationary receiver.

Figure 2 shows an example of such a conventional two-sided display, where (1) shows the main screen of the television receiver, (2) shows the main screen, and (
3) is displayed on the sub-screen together with ``Watase'' (4).

The circuit configuration of the conventional television device as described above is, for example, as shown in FIG. In Fig. 3, the signal input from the antenna αυ is tuned by the tuner D via the tuning circuit αJ in response to a command from the tuning switching command circuit I, which consists of a remote control transmitter, for example, and is sent to the video intermediate frequency circuit side. The demodulated video and audio signals and the video and audio signals from other video equipment αη are simultaneously added to the switching circuit (1B+) connected to this circuit αω. This switching circuit 0e uses any one of the ten thousand video/audio signals as the first signal and switches the color/video signal processing circuit σ according to a command from a switching command circuit consisting of a remote control transmitter, for example. , a synchronous circuit ■, and an audio circuit [a synchronous circuit of a color/video signal processing circuit that supplies the 2D in parallel and uses the other video/audio signal as the second signal, forming a second processing circuit group. The first signal is then supplied in parallel to the audio circuit.Thus, the first signal becomes the main screen (2) in Figure 2. The second signal is digitized by the A/D conversion circuit (2) and written into the memory circuit section.This writing is performed in accordance with a write command issued from the memory controller (Z) with a clock corresponding to the phase of the synchronous circuit. The written data is read out with a clock corresponding to the phase of the synchronization circuit of the main screen.The switching command circuit is controlled by the command of the sub-screen frame color switching circuit. A colored frame indicating the switching status is placed on the edge of the sub-screen (3) in Figure 2 under control, and the digitized second video signal is placed within this frame and the D/A conversion circuit is This framed signal is converted into an analog signal.This analog signal is converted into a matrix by a two-screen creation circuit C311 together with the video signal that has passed through the color/video signal processing circuit q, and is then sent to the cathode ray tube (121 as shown in FIG. 2). It is displayed as two screens as shown.

It should be noted that this is a set of ~■ in the child screen creation circuit portion explained in j, and ■ is a speaker.

In addition, when the main screen displays signals from other video equipment and the sub-screen displays the signal of the selected antenna input, for example, the signals from the Connect to the channel selection method and select the channel w1
13), one channel of the antenna-input television signal is sequentially selected and displayed on the sub screen at a certain fixed time interval, and a sequential channel selection stop command circuit unit installed in a similar remote control device, etc. By connecting the signals to the channel selection circuit (+31) via the sequential channel selection stop means, the sequential channel selection can be stopped.

As another operation mode, when the switching command circuit (18) is operated while the antenna input video displayed on the sub screen is being sequentially selected by the signal from the sequential channel selection start command circuit example, the switching command circuit (18) is operated. The main screen and the sub-screen are interchanged, and at the same time a television signal input from the antenna is displayed on the main screen, a signal is sequentially sent to the channel selection stop means port to sequentially stop the channel selection.

Problems to be Solved by the Invention However, in the above configuration, one channel is sequentially selected at a certain period of time in response to a sequential channel selection start command, so channels with no signal are displayed on the sub screen. Also, even if there is a signal, an unsightly image such as a channel whose electric field strength is too weak is displayed as a single-channel image.

In view of the above-mentioned problems, the present invention provides a television with a function for sequentially selecting channels on a sub-screen, which allows a sub-screen to be simultaneously displayed on a part of the main screen, and allows the images on the main screen and the images on the sub-screen to be interchanged. On the device, while viewing images from other video equipment on the main screen, the sub-screen displays television images that are automatically, dynamically and controlled in order to avoid viewing unsightly signals from the antenna input. In order to solve the above-mentioned problems, the television device of the present invention simultaneously displays a sub-screen on a part of the main screen. It is configured so that the main screen image and the sub screen image can be exchanged, so that when the main screen displays images from other video devices and the sub screen displays images from the antenna input, Automatically selects the incoming signal one page at a time, determines the presence or absence of the selected signal, skips unsightly channels, and sequentially stops the channel in the middle of channel selection, or switches to the main screen. It has a configuration that allows it to be stopped.

Effect of the Invention With the above-described configuration, the present invention sequentially selects antenna input while displaying a video from another video device on the main screen and displaying the antenna input video on the sub-screen, and eliminates unsightly channels. You can easily and automatically watch all television signals in sequential order, skipping over the television signals, and if the desired channel is found, -
It can be used to replace the main screen by operation.

Embodiment A television apparatus according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an example of the configuration of the present invention, and blocks that are the same as those in FIG. 3 are given the same numbers. In FIG. 1, the channel selection circuit σJ is connected to a sequential channel selection means ■ configured to receive commands from a sequential channel selection start command circuit □□□ consisting of, for example, a remote control device, and is controlled by this. The channel selection circuit (131 is for sequentially selecting the television signal input from the antenna that is being displayed on the sub screen). The signal of the stop command circuit (1g) is connected via the sequential channel selection stop means to stop the above-mentioned channel selection. M ((based on the signal from 41) sequentially transmits a signal to the sequential channel selection stop means at the same time that the television signal input to the antenna is displayed on the channel selection unit;
Tuning will be stopped sequentially. A line is a line for sending such a stop command signal from the switching command circuit a81 to the channel selection stop means diagram.

In the present invention, means for determining channel defects and skipping over them is connected to the sequential channel selection means (g).

That is, when sequentially selecting channels, means (4t) for determining the presence or absence of a signal of the selected n-th channel or the unsightliness of the signal by using horizontal synchronization pulses that are synchronously separated by the synchronization circuit.
And, when this discrimination output means no signal or unclear signal, etc. (Charim Ru defect), it skips the nth channel and outputs H.
+ A skip control means (91) is provided for selecting the No. 1 channel, and the latter four are sequentially connected to the channel selection means c351.

In addition, in the first embodiment described above, when selecting a television channel with 7 inputs on the sub screen, the horizontal synchronization pulse of that signal is used to determine the presence or absence of the selected nth channel signal. However, any other device may be used as long as it can determine the presence or absence or unsightlyness of signals such as the 〇〇 voltage and AFC voltage obtained from the video intermediate frequency circuit (151).

Effects of the Invention As described above, the present invention is capable of displaying either a signal from another video device or a signal input from the antenna input of a receiver on a large part of the screen, and simultaneously displaying the other on a part of the display screen. means for exchanging the two signals; and means for automatically sequentially transmitting and selecting the signals input from the antenna input of the receiver simultaneously displayed on a part of the display screen;
means for determining the presence or absence of a signal that has been sequentially transmitted and selected;
skipping control means for controlling the means for sequentially transmitting and selecting one of the first channels; means for stopping the channel selection in the middle of sequentially transmitting and selecting; and means for controlling the above two signals during sequentially transmitting and selecting. In order to stop the channel selection sequentially at the same time as replacing the
By being equipped with means related to the above signal type switching means and channel selection stop means, while watching signals from other video equipment on the main screen, you can watch channels without white signals of antenna input on the sub screen. You can watch the selected video by automatically skipping channels that are unsightly due to weak electric fields, and you can also switch the desired channel to the main screen and stop channel selection with a single operation. .

[Brief explanation of the drawing]

Fig. 1 is a configuration diagram of a television device according to an embodiment of the present invention, Fig. 2 is a perspective view showing an example of a conventional two-screen television receiver image display, and Fig. 3 is a configuration diagram of a conventional television device. It is a diagram. (131----One station selection circuit (161---All switching circuit

Claims (1)

[Claims] Means for displaying either a video signal from another video device or a signal input from the antenna input of the receiver on a large part of the screen, and simultaneously displaying the other on a part of the display screen;
means for exchanging two signals, and a signal entering from the antenna input of the receiver simultaneously displayed on a part of the display screen;
means for automatically sequentially sending and selecting channels; means for determining whether or not there is a sequentially sending and selecting signal; and depending on the presence or absence of the signal, the sequentially sending and selecting is made to be either the nth or n+1th station selection. A jump control means for controlling the means for sequentially sending and selecting channels, and a means for stopping the channel selection in the middle of sequentially sending and selecting, and the signal switching means is provided with a skipping control means that controls the means for sequentially sending and selecting channels, and the signal switching means is provided with a jump control means that controls the means for sequentially sending and selecting channels, and a means for stopping the selection in the middle of sequentially sending and selecting. . A television apparatus, characterized in that it is associated with means for activating the channel selection stop means in order to switch the two signals and simultaneously stop the sequential channel selection.