JPH01318480A - Television system - Google Patents

Abstract

PURPOSE:To transmit and receive a clear picture using a transmission line such as a telephone line by providing an external memory to transmit and receive picture data using a digital television system and a camera to send an image pickup signal to a picture signal processing part. CONSTITUTION:In the case of transmitting the picture from the side of a digital television system A, when a prescribed picture is image-picked up by a camera 7, the image pickup signal is taken in a picture signal processing part 2, passed through a frame memory 3, converted from parallel data to serial data in a data changing part 4, modulated in a modem 5, and sent to a telephone line C. Further, when plural pictures are previously image-picked up by the camera 7 and stored in an external memory 8, an arbitrary picture out of the stored plural pictures can be selected in a remote control transmitter 9, taken in the picture signal processing part 2, and transmitted in the same manner as above. Thus, the clear picture can be transmitted and received, and the picture can be reproduced with satisfactory picture quality on the comparatively large display device of the television system.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a television device that is capable of transmitting and receiving digital image data via a transmission line such as a telephone line.

[Conventional technology]

2. Description of the Related Art There is a so-called videophone system that transmits and receives image information using a telephone line. this is,
It transmits and receives image signals and audio signals in a time-divided manner.

[Problem to be solved by the invention]

However, since this videophone system is primarily focused on phone calls, the display consists of a relatively small screen that can be used to identify people.
It was very inconvenient to send and receive images of documents and make calls.

On the other hand, currently, frame memory is used to convert incremental image information sent from broadcasting stations into non-incremental images, which is then reproduced on a CRT (cathode ray tube) as a clear, flicker-free image. A digital television device has been proposed.

The present invention utilizes such a digital television device,
To make it possible to send and receive clear images that can be viewed on a large screen using a transmission line such as a telephone line.

[Means to solve the problem]

To this end, the present invention provides a television device that includes a display, an image signal processing unit that sends image signals to the display, and a frame memory that is connected to the image signal processing unit and stores input image signals to configure a screen. a data converter connected to the frame memory and converts data into serial/parallel; a modem connecting the data converter to a transmission line; an external memory that sends and receives image data to and from the image signal processor; A camera that sends an imaging signal to the signal processing section was provided.

〔Example〕

An embodiment of the present invention will be described below. FIG. 1 is a diagram showing one embodiment thereof. A is a digital television device, and a display 1 consisting of a CRT or the like that reproduces images;
An image signal processing unit 2 for sending reproduced image signals to the display 1. A frame 1 capable of configuring a screen for one frame, a memory 3, converting serial data into parallel data, or converting it inversely. The data converter 4 modulates the digital signal when sending it to the telephone line C or
It has a modem 5 that has a function of demodulating signals received from the computer and extracting digital signals, and a system controller 6 that controls the entire system.

Note that this digital television device A also has a tuner section and an audio processing section that receive television signals transmitted from broadcasting stations and perform processing such as channel selection, but these are not related to the main part of the present invention. The explanation will be omitted.

Further, this digital television device has a camera 7 and an external memory 8 as external connection devices, and is further equipped with a remote control transmitter 9 for operating the system controller 6.

B is line control unit 1~(NCU), and telephone line C
and connects the digital television device A and the telephone set to the telephone line C.

Now, after the line has been established with the other party's phone using the dial on the phone, if you switch to the remote image transmission mode by operating both phones, you can connect line control unit B and modem 5.
Digital television devices will be connected to each other via the .

Therefore, for example, when transmitting an image from the digital television device A side, when a predetermined image is captured by the camera 7, the image signal is taken into the image signal processing section 2, and transmitted via the frame memory 3 to the data changing section 4. The parallel data is converted into serial data, modulated by the modem 5, and sent to the telephone line C.

In addition, a plurality of images are captured in advance with the camera 7 and stored in the external memory 8.
If the images are stored in the image signal processing unit 2, any screen from the images can be selected using the remote control transmitter 9, taken into the image signal processing unit 2, and transmitted in the same manner as described above.

Also, when receiving image signals from the other party's phone,
The image signal is taken into the modem 5 via the telephone line C and the line control unit 5) and demodulated, and then sent to the data converter 4.
After being converted into parallel data, it is taken into the frame memory 3, where one frame of screen is constructed. When this screen configuration is completed, the image signal processing unit 2 starts displaying the image on the display 1.

In addition, the image data received in this way is stored in the external memory 8.
This stored image can also be reproduced on the display 1 only on the digital television device A side at any time, regardless of the line control unit 1-B or the telephone set.

As described above, when sending an image to the other party on the phone, it is possible to send not only the image currently captured by the camera 7, but also images captured in the past and stored in the external memory 8. When we reproduce an image, we can not only reproduce the image currently received, but also reproduce the image received in the past and stored in the external memory 8. Since these images can be displayed using a non-ink lace method, the resulting images are extremely clear and of high quality without flickering.

Note that since the digital television device A is already equipped with a frame memory, an image signal processing section 2, a display 1, etc., in this embodiment, a data conversion section 4, a modem 5, a camera 7, an external memory 8, etc. are added. All you have to do is do that. Therefore, it is also possible to configure these components separately and connect them to a conventional Gibutal television device using a cable or the like.

〔Effect of the invention〕

As described above, according to the present invention, clear images can be transmitted and received, and images can be reproduced with good image quality on a relatively large display included in a television set. Therefore, by combining it with a telephone, there will be no inconvenience when discussing documents or the like. In addition, the transmitted and received images can be used not only for images currently being captured, but also for images stored in an external memory, making them extremely useful.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of one embodiment of the present invention. Agent: Patent attorney Tsuneaki Nagao

Claims (1)

[Claims] (1) A television device comprising a display, an image signal processing unit that sends image signals to the display, and a frame memory that is connected to the image signal processing unit and stores input image signals to configure a screen, the frame memory a data converter that is connected to and converts data into serial/parallel; a modem that connects the data converter to a transmission line; an external memory that sends and receives image data to and from the image signal processor; What is claimed is: 1. A television device comprising: a camera that sends an imaging signal to a television device;