JPH05300444A - Tuner card for personal computer - Google Patents

Abstract

PURPOSE:To output the pictures and sounds of natural images only by inputting the antenna signals of a television by loading a television tuner or the like for outputting the pictures and sounds of the television or home video. CONSTITUTION:An antenna signal 7 is supplied and when the channel of the television is instructed by remote control, the instructed channel is tuned by a tuner/IF part 10. Then, the video signals and audio intermediate frequency signals of a base band are generated. An audio processing part 11 and a volume control part 12 process audio signals and stereo sounds are generated from a speake part. At the same time, a Y/C separation part 17, chrominance signal reproducing part 13 and synchronizing separation part 16 process video signals, R, G and B signals and H and V synchronism 23 are supplied to a CRT display, and the pictures of the instructed channel can be obtained on the CRT display of a personal computer. Therefore, the function of the television can be completely made compound to the personal computer, and space for equipment units can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is equipped with a television tuner or the like for outputting video and audio such as television and home video to a display and a speaker of a personal computer.
The present invention relates to a card to be inserted into a slot of the personal computer and used.

[0002]

2. Description of the Related Art A personal computer not only pursues a function for business use but also has a function corresponding to a personal and hobby purpose. For example, in a multimedia personal computer, there is already a product having a function of displaying a natural image such as a television on the display of the personal computer. Conventionally, one of the methods of displaying a natural image on a display of a personal computer, such as a television, is to first insert a video signal processing card into the slot of the personal computer, and then transfer the video signal from an external television tuner to the video signal of the personal computer. There is one in which the video signal processing card inputs the signal to a processing card, and the video signal processing card performs signal processing such as R, G, and B signal conversion and outputs it to a display. Therefore, in order to enjoy a picture of a natural image on a television or the like, in addition to a personal computer, a device having a video signal output such as a television tuner or a home video is required, and a lot of space is required for the equipment. It was a form that was difficult for people to accept.
Further, in the conventional example, only the image of the natural image is provided, and the personal computer does not have the function of accepting the sound accompanying the image of the natural image.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and outputs a natural image and sound to a display and a speaker of a personal computer only by inputting an antenna signal of a television. The purpose is to provide an additional built-in type PC card.

[0004]

In order to achieve the above object, a card body inputs an antenna signal, selects a desired channel, amplifies and detects, and a baseband video signal and an audio signal. A tuner / IF unit for generating an intermediate frequency signal, and FM detection of the audio intermediate frequency signal,
An audio processing unit that performs audio multiplex demodulation to generate L and R audio signals, a volume adjusting unit that adjusts the volume of the L and R audio signals, a luminance (Y) signal and a carrier color (C) signal from the video signal. A Y / C separation unit for generating a color signal, and a color signal reproduction unit for generating R, G, B signals from the Y signal and the C signal,
It is a sync separation unit that generates a horizontal sync signal and a vertical sync signal.

[0005]

With the above-described structure, the antenna signal is input, the desired channel is selected, the signal is amplified and detected, and the baseband video signal and audio intermediate frequency signal are generated. The audio intermediate frequency signal is subjected to FM detection, audio multiplex demodulation to generate L and R audio signals, and the volume is adjusted and output to the speaker. Also, after generating a luminance (Y) signal and a carrier color (C) signal from the video signal, R, G, and B signals are generated from the Y signal and C signal, and a horizontal synchronization signal (H synchronization) and A vertical sync signal (V sync) is generated and output to a display device. Also, it inputs a remote control code signal, decodes the remote control code signal, and controls each unit.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A tuner card for a personal computer according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is a block diagram showing the connection of a tuner card for a personal computer according to the present invention with peripheral devices. 1 receives an antenna signal 7, a video signal 8 and a remote control code signal 21, processes the signals, outputs R, G, B signals and H synchronization, V synchronization 23, and outputs an audio intermediate frequency to the audio processing / amplifying unit 5. It is a tuner card for personal computer that outputs signals. 2 is the R,
It is a CRT display of a personal computer which inputs a G, B signal and H synchronization and V synchronization 23 and projects a picture of a natural image. Reference numeral 3 is a speaker section of a personal computer for inputting the L and R audio signals 22 whose volume is adjusted. Reference numeral 4 denotes a remote control receiving unit that receives a remote control signal and outputs a remote control code signal 21.
5 is the FM intermediate frequency signal FM detection, voice multiplex demodulation,
It is an audio processing / amplifying unit that generates the L and R audio signals 22 whose volumes are adjusted and outputs the L and R audio signals 22 to the speaker unit 3.

FIG. 2 is a block diagram of a main part of a tuner card for a personal computer according to the present invention. 10 is the antenna signal 7
Is a tuner / IF unit for inputting, selecting a desired channel, amplifying, detecting, and generating a baseband video signal and an audio intermediate frequency signal. An audio processing unit 11 receives the audio intermediate frequency signal, performs FM detection, audio multiplex demodulation, and generates L and R audio signals. 1
Reference numeral 2 is a volume adjusting unit for inputting the L and R audio signals and amplifying and adjusting the volume. Reference numeral 17 denotes a Y / C separation unit that inputs a video signal and generates a luminance (Y) signal and a carrier color (C) signal. 13 is R, G, from the Y signal and C signal
A color signal reproducing unit that generates a B signal, 16 is H synchronization,
It is a sync separation unit that generates the V sync 23. 15 receives the remote control code signal 21, and inputs the remote control code signal 21.
Is a decoding / control unit that decodes and controls each unit. Reference numeral 14 is a first switch for switching the video signal generated by the tuner / IF unit 10 and the video signal 8 supplied from the outside, and 18 is the Y / C separation unit 1.
A second switch for switching the Y signal and the C signal generated in 7 and the Y signal and the C signal 17 from an external device input from the S terminal provided in the tuner card for a personal computer according to the present invention, and 19 is the voice processing. L generated in part 11
And a third switch for switching between the R and R audio signals and the L and R audio signals 20 supplied from an external device.

The operation will be described. When the antenna signal 7 is supplied and, for example, the channel 1 of the television is designated by the remote controller, the tuner / IF unit 10 tunes to the channel 1 to generate a baseband video signal and an audio intermediate frequency signal. The voice processing unit 11 and the volume adjusting unit 12 process the voice signal, and the speaker unit 3 operates at a predetermined volume.
The sound of channel 1 is generated in stereo. At the same time, the Y / C separation unit 17, the color signal reproduction unit 13, and the synchronization separation unit 16 process the video signals to supply the R, G, B signals and the H synchronization and V synchronization 23 to the CRT display 2. And the picture of channel 1 is C on the computer
Seen on RT display. The volume can be obtained by controlling the volume adjusting unit 12 to a desired volume with a remote controller. In addition, the signals supplied from the outside, for example, the S output of the home video and the L and R audio signals 20, are decoded by selecting the S switch with the second switch 18 and the third switch 19 respectively.・ Control unit 1
5 controls the picture of S output of the home video and L and R
The sound of the sound signal 20 is obtained by the CRT display 2 and the speaker unit 3. In addition, for display such as television channel display, a signal switch is provided immediately after the color signal reproducing unit 13 so that the R, G, B signals generated by the color signal reproducing unit 13 can be displayed on-screen. R, G from
On-screen display may be performed on the CRT display 2 by switching the B signal and the pixel unit.

[0009]

[Effects of the Invention] By connecting the antenna line and selecting the TV channel by remote control operation, the video and audio of the selected TV can be obtained at the same time on the display and the speaker of the PC, so that the PC functions perfectly. Can be compounded. Therefore, it is possible to provide an electronic device that helps efficient use of a small residential space.

[Brief description of drawings]

FIG. 1 is a block diagram showing a connection of a tuner card for a personal computer according to the present invention with peripheral devices.

FIG. 2 is a block diagram of a main part of a tuner card for a personal computer according to the present invention.

[Explanation of symbols]

 1 PC tuner card 2 CRT display 3 Speaker section 4 Remote control receiving section 5 Audio processing / amplifying section 7 Antenna signal 8 Video signal 10 Tuner / IF section 11 Audio processing section 12 Volume control section 13 Color signal reproducing section 14 First switch 15 Decoding / Control Unit 16 Sync Separation Unit 17 Y / C Separation Unit 18 Second Switch 19 Third Switch 20 L and R Audio Signal 21 Remote Control Code Signal 22 Volume Adjusted L and R Audio Signal 23 R, G, B signal and H sync, V sync

Claims (2)

[Claims] 1. In a dedicated card for a personal computer, which is added to a personal computer to expand the functions of the personal computer, the card body inputs an antenna signal, selects a desired channel, amplifies, detects, and bases. A tuner / IF unit for generating a band video signal and an audio intermediate frequency signal,
FM detection of the voice intermediate frequency signal, voice multiplex demodulation,
An audio processing unit that generates L and R audio signals, a volume adjusting unit that adjusts the volume of the L and R audio signals, and a Y / that generates a luminance (Y) signal and a carrier color (C) signal from the video signal. C separation unit, and R, G, from the Y signal and the C signal
A tuner card for a personal computer, comprising a color signal reproducing unit for generating a B signal and a sync separating unit for generating a horizontal synchronizing signal and a vertical synchronizing signal. 2. The tuner card for a personal computer according to claim 1, wherein the card body comprises a decoding / control unit for inputting a remote control code signal, decoding the remote control code signal, and controlling each unit.