JPH01166679A - Television receiver - Google Patents

Abstract

PURPOSE:To easily reproduce an overlooked pattern or a desired pattern by erasing video image stored in a video storage device for a prescribed time's recording sequentially from the older image, replacing it into a new picture and reproducing the just preceding storage information by a prescribed operation. CONSTITUTION:An intermediate frequency of a radio wave selected by a tuner 1 is detected by a detector 2 and subject to signal processing by a video signal processing section 3. The signal subject normally to signal processing via a signal switch 8 is reproduced on a cathode ray tube 10 from a video output section 9. On the other hand, the signal subject to signal processing 3 is given to an A/D converter 4 and to a memory control 6, the result is given to an endless memory 7, where the signal is written sequentially and the older signal is erased thereby replacing the pictures. In the case of viewing an overlooked picture or a desired pattern, the signal switch 8 is changed over to designate a frame in the endless memory 7, the signal is subject to D/A conversion 6 and the resulting signal is displayed on the cathode ray tube 10 from a video output section 9. Thus, the desired pattern or the overlooked pattern is reproduce by a simple device.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention constantly stores received signal information for a predetermined period of time just before it, and when a predetermined operation is performed, the received signal information for a predetermined period of time immediately before the predetermined time is stored. The present invention relates to a television receiver having a function of reproducing stored contents for a predetermined period of time.

[Conventional technology]

-ff When I watch a television program, I sometimes miss the scene I want to see for a moment. Also, depending on the scene, you may want to watch it repeatedly. Conventionally, a VTR was used for this purpose, but it was cumbersome because it had to be put on standby in advance. Generally, situations like this that make you want to watch the movie again are not predicted in advance and often occur suddenly. Also, JP-A-58-20697
As shown in Japanese Patent No. 5, there is a device that stores a video at a certain moment. However, with this device, it is only possible to view instantaneous images, and the images are limited to still images. i9 You cannot see the screen you missed.

[Problem that the invention seeks to solve]

An object of the present invention is to provide a memory device capable of storing Eirin signals for a predetermined period of time, so that a missed screen or a desired screen within the immediately preceding predetermined period of time can be played back at any time without complicated operations. The purpose of the present invention is to provide a television receiver that can perform the following functions.

[Means for solving problems]

The above purpose is achieved by equipping a television receiver with a memory device capable of storing video signals for a predetermined period of time, and reading out the contents of this memory device and outputting it to the display section as necessary. achieved.

[Effect]

The principle operation of the present invention is shown. First, the sent video signals are written into a memory device in chronological order. This memory device is, for example, a COD memory, and at the same time new information is written, old information older than a predetermined time is pushed out and erased. When viewed at a certain moment, this memory stores video signals from the current time up to a predetermined time ago. The screen you missed.

When there is a screen that you want to see directly, you stop writing the video signal, switch the display on the television receiver, and reproduce the video information you want to see on the screen. In other words, read the signal from the memory that stores the video signal of the screen you want to see.

The configuration shall be such that the above-mentioned video signal information is stored at the same time as the television receiver is connected to the power source.
'l'1! You can always play back the screens you missed or want to see again without having to set the location or other troublesome operations.

〔Example〕

An embodiment of the present invention will be described below using an 1X1 block diagram. Signals from the outside are tuned by tuner 1, then passed through IP video detection 2, and subjected to video signal processing in 5. Normally, this signal is added to the video output when the signal of 8 is switched, and the picture of the external signal is reproduced. On the other hand, the video signal from 3 is converted by 4 and becomes, for example, a 4-bit gradation density signal. This signal is then sequentially written into the memory device 7 by the memory control 5. For example, a semiconductor memory is used as this memory device. When you want to play back and view the previous screen, specify the frame address using the memory control and read out the required memory area. This signal becomes an analog video signal by changing the ridges at 6, and by switching the signal at 8, this No. 1f is displayed on the picture tube 10. 8 also allows signal synthesis. Therefore, as shown in FIG. 2, the video signal stored in the memory can be displayed on a large screen, and the video currently being sent can be displayed on a portion of the screen. The readout mechanism of the menu will be explained in more detail with reference to FIG. AI-4-
Each λN has a 7-frame memory and has a capacity of several minutes. First, specify the frame address to read.

B□＃B! -BN is applied with a 4-bit density signal for each picture element of each frame. Depending on the signal from the decoder), one set, for example Bi, is selected, and this 4-bit signal is c,, c*, c,, c
, is taken out. This signal is connected to the IKA shown in 6 in Figure 1.
An analog video signal can be created using a converter. A moving image can be obtained by sequentially increasing the specified frame addresses. For example, by skipping i frame addresses at a time, high-speed data is possible.
Also, by sequentially reducing K, pictures can be returned.

In the above embodiments, a semiconductor was used as the memory for video signals, but the same functionality can be achieved by using other storage devices such as magnetic tape, aluminum disks, optical disks, bubble memories, and other storage devices. .

In this embodiment, the configuration is such that the video signal is converted into t-abit and stored, and 9 is 8 bits or other bits.
The invention can be implemented using similar principles.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to provide a television receiver that can easily reproduce missed screens and desired screens without performing complicated operations.

In addition, since the memory contents are constantly refreshed, it is only necessary to have enough memory capacity for a predetermined period of time (for example, 2 to 3 minutes), and there is no need for any complicated operations, such as changing tapes on a VTR. You can always review video information for a predetermined amount of time immediately before that video.

[Brief explanation of the drawing]

Fig. 1 is a diagram of an embodiment of the present invention, Fig. 2 is an explanatory diagram showing a screen on a television receiver according to an embodiment of the invention, and Fig. 3 is an embodiment of the invention. This is the theory jj11@ which shows the principle of continuous output of the video gR signal. 4.A, Φ converter, 5.-Memory for recording multi-screen video signals, 8.-Signal exchange device or signal synthesis device. ,! The second prisoner of pH

Claims (1)

[Claims] 1. Equipped with a video information storage device for a predetermined amount of time, and of the information already written in the storage device, the stored information contents for which a predetermined time has elapsed are erased, and the video information currently being received is always stored in the storage device. 1. A television receiver having a function of writing new data into a storage device and, in response to a predetermined operation, reproducing stored information for a predetermined period immediately before the predetermined operation.