JPH1083171A - Video signal superposing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve operability by displaying a TV on a monitor of a computer and adjusting and tuning its image with an icon. SOLUTION: An animation circuit part 1 inputs a personal computer video signal 3 (digital RGB luminance signals and vertical, horizontal synchronizing signals) from a personal computer basic part 2, an NTSC composite video signal 6 and audio signal 7 from a TV tuner part 5 based on a command of a TV tuner control signal 4. Then, the animation circuit part l synthesizes these two video signals, and outputs the video signal 10 inserting the TV animation picture 9 of the NTSC composite video signal 6 into the personal computer picture 8 of the personal computer video signal 3 to a personal computer monitor 11 being a display device. Further, a sound is outputted from a speaker 13 synchronized with a TV picture on the personal computer monitor 11. A TV video, e.g. is tuned by a key board, a mouse by using the icon of a picture imitating a TV device displayed on the personal computer monitor 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image superimposing apparatus for superimposing a TV image on a part of a screen of a computer having a monitor as a display device.

[0002]

2. Description of the Related Art Recently, personal computers (personal computers) which take up little space when used on a desk and which can be carried around anywhere are becoming mainstream.

[0003] This portable personal computer is used in a wider field than a conventional desktop personal computer. For example, using a word processor function to create a report on an airplane or a Shinkansen on a business trip, or using a tabulation function to total scores of outdoor sports such as baseball and golf.

[0004] Such diversification of usage is becoming established as a new lifestyle for busy modern people.

[0005]

By the way, if real-time information such as the latest news can be obtained in the field, the information can be conveniently used as data of a portable personal computer. For example, if stock price information and foreign currency exchange rate information can be obtained on an airplane or Shinkansen on a business trip, a more accurate report can be created based on this information. However, conventional portable personal computers can handle only the same information as ordinary desktop personal computers. That is, only information stored in a memory (ROM or RAM) in a personal computer or a hard disk device, or information stored in a floppy medium or an IC card can be used.

Therefore, when a portable personal computer is used outdoors, it is necessary to carry a portable TV as an information source of personal computer data as necessary. However, the simultaneous use of a portable personal computer and a portable TV in an airplane or Shinkansen took up space and was difficult to install. Further, even if it can be installed, moving the line of sight to the portable TV while operating the portable personal computer increases the moving distance of the line of sight and reduces work efficiency.

[0007]

A moving picture circuit for synthesizing a TV picture and a computer picture signal and supplying the synthesized picture signal to the display device is provided, by operating an icon displayed on the display device. The TV image is configured to be adjustable.

[0008] Alternatively, there is provided a moving picture circuit section for synthesizing a TV video and a computer video signal and supplying the synthesized video signal to the display device, and operating an icon displayed on the display device to operate the TV video. Is configured to be selectable.

Further, the operation of the icon is performed based on a signal from a keyboard or a mouse.

[0010] Alternatively (or additionally), the icon changes based on a keyboard or mouse signal.

Alternatively (or further), the moving picture circuit unit combines the combined signal so that the TV picture is displayed in the icon.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is a block diagram showing a circuit of a portable personal computer.

As shown in FIG. 1, a moving picture circuit 1 includes a personal computer video signal 3 (a digital RGB luminance signal and a vertical / horizontal synchronization signal) coming from a personal computer basic section 2 and a TV.
The TV tuner unit 5 based on the instruction of the tuner control signal 4
NTSC composite video signal 6 and audio signal 7 coming from
Enter Then, the moving picture circuit section 1 synthesizes these two video signals, and outputs the personal computer video signal 3 to the personal computer screen 8.
A video signal 10 in which a TV video screen 9 of an NTSC composite video signal 6 is inserted into a personal computer monitor 11 as a display device
Output to The combination of the personal computer video signal 3 and the NTSC composite video signal 6 is determined by extracting a desired portion from the video signal screen or enlarging the extracted screen based on the control command 12 from the personal computer basic unit 2. Is performed. In addition, audio is output from the speaker 13 in accordance with the output of the TV screen to the personal computer monitor 11. The personal computer basic unit 2 here is a general one, and includes a central processing unit 14, a main memory 15, a read-only memory 16, a VR
It comprises an AM 17, a VRAM control unit 18, an input / output device 19 and the like.

Next, the internal structure of the moving picture circuit 1 will be described with reference to FIG.

As shown in FIG. 2, the video signal decoder 21
Is NTSC based on the command of the TV tuner control signal 4.
The composite video signal 6 is input, and the NTSC composite video signal 6
, An RGB luminance signal 22 and a horizontal / vertical synchronization signal are extracted. The A / D converter (ADC) 23 quantizes the RGB luminance signal 22 arriving from the video signal decoder 21 at the timing of the clock signal CKAD from the moving image processor 24 and converts it into a digital RGB luminance signal 25.
The video memory 26 has a configuration of 960 rows × 306 columns × 4 bits, and is provided for each of R, G, and B colors.

The moving image processor unit 24 uses the clock generated by the moving image clock generator unit 27
The clock signal CKAD is output to C23, and the write control signal WETV is output to the video memory 26. The clock signal CKAD is a signal synchronized with the horizontal synchronization signal from the video signal decoder 21, and has a cycle of 1 / N (N is a positive integer) of the cycle (for example, 63, 5 μs) of the horizontal synchronization signal. The write control signal WETV is a signal that permits writing of the digital RGB luminance signal 25 coming from the ADC 23, and is a set of a plurality of control signals.

The moving image processor 24 also controls reading of images stored in the image memory 26. The moving image processor 24 sends a read control signal to the video memory 26 based on the conditions instructed by the personal computer basic unit 2. The read control signal is a digital signal from the video memory 26.
This signal controls reading of the GB luminance signal. Although a specific form of the read control signal is omitted here, it is usually a set of a plurality of control signals. For example, video memory 2
6, a signal for designating or incrementing a pixel address for reading in the screen, a control signal for permitting reading in pixel units, a control signal for permitting reading only in a desired area in the horizontal direction (line) of the screen, It is composed of a control signal for permitting reading of only a desired area in the vertical direction. All of these control signals are generated based on whether or not the read basic synchronization signal generated inside the moving image processor unit 24 is counted and whether or not the count value has reached a set value set for each control signal. It is. These set values can be adjusted based on a command from the personal computer basic unit 2.

The digital RGB luminance signal 28 read from the video memory 26 is combined with the personal computer video signal 3 by the multiplexer 29. This synthesizing is performed at the timing of the clock signal CKMP sent from the moving image processor 24, and is supplied to the personal computer monitor 11 as the video signal 10.

An audio signal 7 coming from the TV tuner section 5
Is a sound quality control line T transmitted from the moving image processor 24.
Under the control of the QCL, the signal is transmitted to the preamplifier unit 30 and the main amplifier unit 31 and given to the speaker 11.

In this embodiment, as the video memory 26, for example, CXK 1206 manufactured by Sony Corporation or MB81 manufactured by Fujitsu Limited
C1501 is used. The video memory 26 has a configuration of 960 rows (COLUMN) × 306 columns (ROW) × 4 pits, which are provided for R, G, and B, respectively. The access to the video memory 26 is performed in units of a block by row.
This is done on a column-by-line basis.

Next, a method for tuning a TV image on a portable personal computer according to the present invention will be described with reference to FIG.

Tuning of a TV image is performed by operating a keyboard 43 and a mouse 44 using an icon 42 displayed on a monitor 41 of a portable personal computer 40.
In general, an icon is a visualization of an operation target using a picture or a symbol. In the present embodiment, a picture simulating a TV device is called an icon.

On the icon 42, a tuning UP /
There are display parts for tuning functions such as DOWN, volume, channel designation, channel display, color adjustment, brightness adjustment, and contrast adjustment / image quality adjustment / sound quality adjustment. These display parts are a keyboard part 43, a mouse 44
Changes in conjunction with the tuning of the TV image by the operation of.

A characteristic function of the icon 42 according to the present embodiment is that one icon has an adjustment portion such as the tuning function and a display portion as described above, and these displays are used for actual tuning. It changes together.

An example of the operation of the tuning function will be described below. First, move the mouse on the desk to move the cursor on the display screen to an appropriate position. Then, a button on the mouse is operated (clicked) to display the icon 42 described above. Here, for example, to operate to increase the volume, move the mouse on the desk to move the cursor to a desired volume position of the volume adjustment unit at the upper right of the icon 42, and press the button on the mouse at that position. Adjust the volume by operating (clicking). The adjustment other than the volume is performed by the same operation. After the adjustment, the button on the mouse is operated (by clicking the button, the display of the icon 42 is switched to the TV moving image).

Although a mouse is mainly used as an input device in this operation example, a point device such as a keyboard may be used as an input device. Further, the icons shown in FIG. 3 are merely examples, and other pictures may be used.

FIG. 4 shows an embodiment of moving image display on a monitor of a portable personal computer according to the present invention. FIG. 4A shows an example in which a TV moving image is displayed on the entire screen of the monitor part 41, and FIG. 4B shows a TV moving image 45 superimposed on a part of the personal computer screen displayed on the monitor part 41. It is an example.

[0029]

The TV is displayed on the monitor of the computer,
Adjustment and tuning of the image are enabled by the icon, and operability is improved.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a circuit of a portable personal computer.

FIG. 2 is a block diagram of the moving picture circuit unit.

FIG. 3 is an external view showing a tuning designation method of the portable personal computer.

FIG. 4 is an external view showing a moving image display example on a monitor of a portable personal computer.

[Explanation of symbols]

 1. Moving image circuit section. 2. Basic computer section. 3: PC video signal. 4: TV tuner control signal. 5. TV tuner section. 6 ... NTSC composite video signal. 7 ... Audio signal. 8 PC screen. 9 TV video screen. 10 ... Video signal. 11 PC monitor. 12 ... Control command. 13 Speaker. 14 Central processing unit. 15 Main memory. 16 read-only memory 17 ... VARM. 18 VRAM control unit 19 ... I / O device.

Claims (5)

[Claims] A video circuit for combining a TV video and a computer video signal and supplying the synthesized video signal to a display device; and operating the icon displayed on the display device to convert the TV video. A video signal superimposing device characterized by being configured to be adjustable. 2. A video circuit unit for combining a TV video and a computer video signal and supplying the synthesized video signal to the display device, wherein the video of the TV is operated by operating an icon displayed on the display device. A video signal superimposing device characterized by being configured to be able to select a channel. 3. The video signal superposition apparatus according to claim 1, wherein the operation of the icon is performed based on a signal from a keyboard or a mouse. 4. The video signal superimposing apparatus according to claim 4, wherein the icon changes based on a signal from a keyboard or a mouse. 5. The video signal superimposition according to claim 1, wherein the moving picture circuit unit combines the combined signal so that the TV picture is displayed in the icon. apparatus.