JPH04299680A - Adapter device - Google Patents

Abstract

PURPOSE:To improve the level of programs of news commentary, a fan club, etc., by performing synthesis and switching of a TV picture and a CATV picture by a control signal and generating a picture intended by a local station on the user side. CONSTITUTION:First and second frame memories 1 and frame or larger for write and read, and TV and CATV pictures are written there. A control part 3 takes in control data included in a part independent of picture information in CATV picture data. Address counters 4 and 5 determine write and read addresses to memories 2 and 1. An address changing part 6 changes address data of the counter 5 by control data from the control part 3 to enlarge, reduce, or scroll the picture. A switch part 7 implements selection/synthesis of pictures from memories 1 and 2 by control data. Thus, the level of programs of news commentary, a fan club, etc., is improved.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adapter device for synthesizing a CATV image with a TV image input from an antenna.

0002

2. Description of the Related Art For example, in the past, TV images (NTSC images and high-definition images) input through an antenna were completely independent of CATV images (NTSC images transmitted from local stations) transmitted by cable. However, C.A.
It is possible to transmit a TV image including a signal for controlling the TV image.

0003

[Problems to be Solved by the Invention] An object of the present invention is to provide an adapter device that can appropriately respond to CATV images containing signals for controlling such TV images. It is to be.

0004

[Means for Solving the Problems] In the present invention, the input T
A first frame memory section to which V image data is written/read, and a first frame memory section to which input CATV image data is written/read.
A second frame memory section from which reading is performed, and the CA
The apparatus is configured to include a control section that takes in a control signal included in the TV image data, and a switch section that switches the read data output of both the frame memory sections in accordance with the control signal from the control section.

[0005]

[Examples] Examples of the present invention will be described below. FIG. 1 is a block diagram of the main parts of an adapter device according to one embodiment. This adapter device receives TV image data (here, NTSC image data) as input signals, and C
AVT image data (also NTSC image data) is taken in, the TV image is processed, and this and CATV image are combined as appropriate, or only one of them is selected and output to the processing circuit on the monitor side. It is something.

Reference numeral 1 denotes a first frame memory section into which TV image data is written, and at least two frames are prepared for writing and reading. Reference numeral 2 denotes a second frame memory section into which CATV image data is written, and this is also prepared for at least two frames. 3 is CA
This is a control unit that takes in control data included in a portion unrelated to image information in TV image data. Reference numeral 4 denotes an address counter for determining an address for writing/reading CATV image data into/from the second frame memory section 2. This address counter 4 is provided corresponding to the number of frame memories in the second frame memory section 2. Reference numeral 5 denotes an address counter for determining an address for writing/reading television broadcast image data into the first frame memory section 1. This counter 5 is also the first frame memory section 1.
are provided corresponding to the number of frame memories. Reference numeral 6 denotes an address changing unit that changes the address data of the address counter 5 using control data from the control unit 3 to enlarge/reduce/scroll the read image. 7 is the first
This is a switch unit for selecting one of the image data read from the frame memory unit 1 and the second frame memory unit 2, or for combining both, and its operation is controlled by control data from the control unit 3. .

[0007] Now, in CATV broadcasting stations (local stations), in relation to the TV image currently being broadcast, how do you add a modified image to the TV image and the modified image to the TV broadcast image? / Sends a control signal to select. This control signal is applied to adapter A.
The address change unit 6 and the switch unit 7 are controlled by the control unit 3, and the image set at the local station is reproduced on the monitor side.

For example, as shown in FIG. 2A, in a TV image 8 in which a plurality of singers a to d are singing, an image of singer a among them is included in the CATV image data transmitted from the local station. control data for scrolling the television image in the first frame memory 1, and control for synthesizing the image data in the first frame memory section 1 and the second frame memory section 2. When the data is sent out, the changed image data is output from the switch unit 7 to the monitor side and reproduced, as shown in FIG. 2B. 9 is an image obtained by scrolling the original image 8 to the left in the first frame memory section 1, 10 is a CATV image of the synthesized lyrics, and 11 is a synthesized CATV image of singer a (enlarged).

Further, control data for enlarging singer a of the television image shown in A in FIG. When the control data for combining the image data in the one frame memory section 1 and the second frame memory section 2 is sent, the changed image data is output from the switch section 7 to the monitor side and reproduced, as shown in FIG. Ru. 12 is an image of singer a enlarged in the first frame memory section 1, 13 is a CATV image of synthesized lyrics, and 14 is a CATV image including singers c and d.

[0010] From the above, this adapter device has a specific contract between the owner and the local station regarding its possession.
It can be applied to a system that transmits modified images and control signals that match the user's preferences at a local station. For example, when establishing a fan club for a particular singer or actor and opening a local station, or when explaining a local station that provides advanced news commentary.

[0011] The above description deals with the case where normal TV images are handled, but based on a high-definition image, the local station performs modification processing on the image.
It is also possible to transmit the modified image as CATV image data and also to transmit the control signal. At this time, the CATV image is also a high-definition image. Additionally, if the user has installed a converter that converts high-definition images to NTSC images,
The converted image data can be taken into the adapter device and subjected to similar processing. Also, by using two monitors instead of one, it is possible to reproduce the original TV image on one side and the image modified by the local station on the other.

0012

[Effects of the Invention] As described above, according to the present invention, the combination and switching between a TV image and a CATV image is performed by a control signal,
Since the image intended by the local station is created by the user, it is suitable for advanced news commentary, fan clubs, etc.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an adapter device according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of the operation of the present invention.

FIG. 3 is an explanatory diagram of the operation of the present invention.

[Explanation of symbols]

A: adapter, 1: first frame memory section, 2: second frame memory section, 3, 4: address counter, 5: address changing section, 6: switch section.

Claims (2)

[Claims] 1. A first frame memory section into which input TV image data is written/read, a second frame memory section into which input CATV image data is written/read, and a first frame memory section into which input TV image data is written/read; 1. An adapter device comprising: a control section that takes in a control signal sent from the frame memory section; and a switch section that switches read data outputs of both the frame memory sections in accordance with a control signal from the control section. 2. The adapter device according to claim 1, further comprising an address changing unit that changes the read address of the first frame memory using a control signal from the control unit.