JP2002344835A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a display device which is operated with a keyboard and a mouse and displays the video of a TV program in a state where an information processor is not started. SOLUTION: A display 11 incorporates a TV tuner 12 as in a normal TV receiver and displays the image of the video signal from a personal computer 16. Moreover, data communication is performed via a USB circuit 17 on the display 11. The keyboard 13 and the mouse 14 receive an operation concerning the reception of TV broadcast and also an operation concerning the personal computer 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device,
In particular, the present invention relates to a display device that can display television broadcast video even when a connected personal computer is not running.

[0002]

2. Description of the Related Art Conventionally, there is a personal computer capable of displaying an image of a television broadcast on a connected display, and recording and reproducing the image.

FIG. 1 shows an example of such a personal computer system. The personal computer 1 has a built-in TV tuner card 2 for extracting an AV signal of a broadcast channel desired by a user from a television broadcast signal supplied from an antenna. The extracted video signal of the AV signal is converted into a video signal of the same format as the video signal of the personal computer 1 and supplied to the display 5 for display. The extracted AV signal is stored in the MPEG of the personal computer 1.
The data is converted into encoded data by an encoder (not shown) of two systems or the like, recorded on a hard disk or the like, read out, decoded, supplied to the display 5, and displayed.

The personal computer 1 has a keyboard 3 and a mouse operated by a user to input a command for instructing the personal computer 1 to start or end the reception of a television broadcast and a command for switching a desired broadcast channel. 4 are connected.

[0005] In order to display an image of a television program on the display 5 of FIG. 1, the personal computer 1 must be in an activated state.

[0006]

Therefore, when the user wants to watch a television program using the display 5, if the personal computer 1 is not activated, the user must activate the personal computer 1. Takes tens or hundreds of seconds, so
There is a problem that lacks convenience for the user.

Conventionally, there is a television receiver capable of displaying a video signal supplied from a personal computer. Therefore, if the television receiver is connected to the personal computer 1 and used, a television program is simply transmitted. There is no need to start up the personal computer 1 only for viewing. However, when the television receiver is connected to the personal computer 1 and used, in order to use a function of recording and reproducing a television program image by the personal computer 1, a television broadcast signal is transmitted from an antenna to the television receiver. Since it is necessary to supply power to both the television receiver and the personal computer 1, there has been a problem that wiring and connection of antenna lines and the like are troublesome.

Further, in this case, a common operation device is used such that a dedicated remote controller or the like is used to operate the television receiver, and a keyboard 3 and a mouse 4 are used to operate the personal computer 1. However, there is a problem that lacks convenience for the user because it is not implemented.

The present invention has been made in view of such a situation, and has a keyboard and a mouse by incorporating a function of receiving a television broadcast and a function of supplying a video signal of the television broadcast to a personal computer. It is an object of the present invention to realize a display device which can be operated by a user and can display a video of a television program without activating a personal computer.

[0010]

According to the present invention, there is provided a display device comprising: an input device for inputting a user operation; a television broadcast signal received in accordance with the user operation input by the input device; Receiving means for generating a signal, supplying means for supplying the second video signal to the information processing device via a predetermined bus, and combining the first and second video signals to form a third signal. Synthesizing means for generating a video signal, selecting means for selecting one of the first to third video signals in accordance with a user operation input by the input means, and video for the video signal selected by the selecting means And a display means for displaying.

[0011] The input means may include at least one of a keyboard, a mouse, and a remote controller.

[0012] The display device of the present invention may further include a notifying means for notifying the information processing apparatus of the user input by the input means to the information processing apparatus via a predetermined bus.

[0013] The predetermined bus may be USB.

In the display device of the present invention, a user operation is input, and a television broadcast signal is received and a second video signal is generated in accordance with the input user operation. Further, the second video signal is supplied to the information processing device via a predetermined bus, and the first video signal and the second video signal are combined to generate a third video signal.
One of the first to third video signals is selected according to the input user operation, and an image corresponding to the selected video signal is displayed.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 2 shows a configuration example of a system to which a display according to an embodiment of the present invention is applied.
This will be described with reference to FIG. The display 11 has a built-in TV tuner 12 like a normal television receiver, and displays a video of a channel corresponding to a channel selection command from a user from a TV broadcast signal supplied from an antenna (not shown). Restore the signal. The restored video signal is displayed on a CRT (Cathode Ray Tube) 27 (FIG. 3).

The display 11 is connected to the display output unit 58 (FIG. 4) of the personal computer (PC) 16 and transfers the video of the video signal input to the video signal input selector 24 (FIG. 3) to the CRT 27. indicate. Further, the display 11 is connected to a personal computer 16 via a USB (Universal Serial Bus) line 17 capable of bidirectional data communication.
Communicate signals, control commands, and other data.

The display 11 has a keyboard 13,
A mouse 14 and a modem 15 are connected. The keyboard 13 and the mouse 14 receive a user's operation for instructing channel selection, volume adjustment, and the like related to reception of a television broadcast on the display 11, and also receive a user's operation for a personal computer 16 connected to the display 11. .

The modem 15 connects the personal computer 16 connected to the display 11 to a network represented by the Internet via a telephone line.
Note that the modem 15 may be built in the display 11.

Next, FIG. 3 shows a configuration example of the display 11. In the display 11, a TV broadcast signal from an antenna is supplied to a TV tuner 12, a video signal from a personal computer 16 is supplied to a video signal input selector 24, and a vertical synchronizing signal (corresponding to a video signal from the personal computer 16). VS) and the horizontal synchronization signal (HS) are supplied to the synchronization signal input selector 28.

The TV tuner 12 extracts and demodulates a frequency component corresponding to a user's channel selection from a TV broadcast signal supplied from an antenna, and obtains a composite video (CVB).
S) The signal is output to the comb filter 21. The comb filter 21 separates the composite signal into Y / C signals and outputs the obtained Y / C signal to the chroma decoder 22. The chroma decoder 22 separates the Y / C signal into a YUV (Y / Cb / Cr) signal and outputs it to the matrix circuit 23. Further, the chroma decoder 22 extracts a vertical and horizontal synchronization signal from the Y / C signal and outputs the same to the synchronization signal input selector 28. The matrix circuit 23 converts the YUV signal into an RGB signal and outputs the RGB signal to the video signal input selector 24.

The video signal input selector 24 receives an RGB signal input from the matrix circuit 23 or a video signal (RG
B signal) or by combining the RGB signal input from the personal computer 16 and the RGB signal input from the matrix circuit 23 (generating a so-called picture-in-picture RGB signal), 2
5 is output. The video amplifier 25 amplifies an RGB signal input from the video signal input selector 2 and an OSD (On Screen Display) RGB signal input from the OSD signal generator 30 and outputs the amplified signal to the CRT 27. CRT27,
The video corresponding to the RGB signal input from the video amplifier 25 is displayed. Note that instead of the CRT 27, an LCD (Liquid
Crystal Display), FED (Field Emission Display), PAL
A display device such as C may be used.

The synchronization signal input selector 28 is supplied with vertical and horizontal synchronization signals from the chroma decoder 22 and vertical and horizontal synchronization signals from the personal computer 16. The corresponding vertical and horizontal synchronization signals are output to the deflection controller 29. The deflection controller 29 receives a DY (Deflection Yoke) 2 of the CRT 27 based on the synchronization signal from the synchronization signal input selector 28.
Drive coils such as 6.

The OSD generator 30 generates a character display signal for adjusting channel display, contrast, etc., and outputs it to the video amplifier 25 as an RGB signal. EEPROM (Electrically Erasable Programmable ROM)
The character code 31 and the font data used when the OSD generator 30 generates the character display signal are stored in 31. In addition, instead of the EEPROM 31,
A simple ROM may be used.

The microprocessor 32 controls each circuit of the display 11. Also, the microprocessor 3
2 acquires a video signal from the video signal input selector 24, performs predetermined signal processing using the RAM 33 as a work area (for example, conversion to a format suitable for transmission to the USB line 17), and performs communication interface (I / F) 34 and the USB interface 35.

Communication interface 34
Controls communication with the modem 15. The USB interface 35 transmits a video signal, which has been subjected to predetermined signal processing, and an operation signal of the keyboard 13 and the mouse 14 supplied from the microprocessor 32 to the personal computer 16 via the USB line 17. IR sensor 36
Receives a command transmitted by infrared from a remote controller (not shown) and outputs the command to the microprocessor 32. The input device interface 37
Keyboard 13 and mouse 1 corresponding to user operation
4 and receives the operation signal from the microprocessor 4 and outputs the operation signal to the microprocessor 32.

FIG. 4 shows an example of the configuration of the personal computer 16. The personal computer 16 has a CP
U (Central Processing Unit) 51 is built in. CPU
51 is provided with an input / output interface 55 via a bus 54.
Is connected. US I / O interface 55
USB interface 5 for receiving video signals and operation signals supplied from display 11 via B line 17
6. A display output unit 58 for supplying a video signal and its vertical and horizontal synchronization signals to the display 11, a storage unit 59 including a hard disk drive for storing programs and various data, a communication unit for connecting to a LAN or the like to communicate data 60, and the magnetic disk 62 to the semiconductor memory 6
5 is connected to a drive 61 for reading and writing data from and to a recording medium such as a recording medium 5. The bus 54 has a ROM (Read Onl
y Memory) 52 and RAM (Random Access Memory) 53 are connected.

The operation signal received by the USB interface 56 is notified to the CPU 51 via the input / output interface 55 and the bus 54. USB interface 5
The video signal received by 6 is subjected to predetermined signal processing and stored in the storage unit 59.

Programs for recording and reproducing video signals supplied from the display 11 via the USB line 17 to the personal computer include a magnetic disk 62 (including a floppy disk) and an optical disk 63 (CD). -ROM (Compact Disc-Read Only Memor
y), a DVD (including a Digital Versatile Disc), a magneto-optical disk 64 (including an MD (Mini Disc)), or a semiconductor memory 65 and supplied to a personal computer in a stored state. It is installed in a hard disk drive built in the storage unit 59. The program installed in the storage unit 59 is operated by a command from the CPU 51 corresponding to an operation signal input via the USB interface 56 in response to a user operation on the keyboard 13 and the mouse 14 connected to the display 11. , Storage unit 59
Is loaded into the RAM 53 and executed.

Next, the operation of the system when a user watches a television broadcast will be described.
In this case, the user only needs to turn on the power of the display 11 alone, and activating the personal computer 16 is not a necessary condition.

In the display 11 whose power is turned on, in response to a user's channel selection operation on the keyboard 13, the mouse 14, or the remote controller,
The TV tuner 12 supplies the T
A frequency component corresponding to the user's channel selection is extracted from the V broadcast signal and demodulated. The obtained composite video signal is Y / C-separated by a comb filter 21, and the obtained Y / C signal is converted into a chroma decoder 22. Is converted into a YUV signal, the YUV signal is converted into an RGB signal by the matrix circuit 23, and output to the video signal input selector 24. The video signal is selected by the video signal input selector 24 and supplied to the video amplifier 25.

At this time, when a video signal from the personal computer 16 is input to the video signal input selector 24 (that is, when the personal computer 16 is activated), the user displays the video of the television broadcast on the screen. Only, only the image of the personal computer 16 is displayed, the image of the television broadcast is displayed on the image of the personal computer 16, or the image of the television broadcast is displayed on the personal computer 1.
6 can be selected to be displayed as a picture in picture.

However, when the video signal from the personal computer 16 is not input to the video signal input selector 24 (that is, when the personal computer 16 is not activated), only the video of the television broadcast is transmitted. Only selection for display is possible.

The RGB signal output from the video signal input selector 24 is amplified by the video amplifier 25 and displayed by the CRT 27.

The display 11 can display video data input from the communication interface 34 or the USB interface 35, for example.

Next, a process of switching the control of the connected keyboard 13 and mouse 14 by the display 11 will be described with reference to the flowchart of FIG. In step S1, the microprocessor 32 of the display 11 sets the video signal input selector 2
It is determined whether or not the power of the personal computer 16 is turned on based on whether or not a video signal is input to the personal computer 16 from the personal computer 16. If it is determined that the power of the personal computer 16 is turned on, the process proceeds to step S2.

In step S 2, the microprocessor 32 uses the personal computer 16 as a control target of the keyboard 13 and the mouse 14 to transmit operation signals from the keyboard 13 and the mouse 14 input via the input device interface 37 to the USB interface 3.
5 and transmitted to the personal computer 16 via the USB line 17.

Conversely, if it is determined in step S1 that the power of the personal computer 16 has been turned off, the process proceeds to step S3.

In step S 3, the microprocessor 32 uses the keyboard 11 and the mouse 14 as objects to be controlled by the display 11 based on operation signals from the keyboard 13 and the mouse 14 input via the input device interface 37. Control.

As described above, when the personal computer 16 has not been started, the control of the TV tuner 12 and subsequent to the display 11 corresponding to operations such as channel selection using the keyboard 13 and the mouse 14 is directly performed by the microcontroller. This is performed by the processor 32. When the personal computer 16 is activated, the control of the TV tuner 12 and the subsequent units of the display 11 corresponding to operations such as channel selection using the keyboard 13 and the mouse 14 is instructed by the personal computer 16 via the USB line 17. Then, the microprocessor 32 executes according to the instruction.

Therefore, the personal computer 16
The user can use the keyboard 13 and the mouse 14 to perform an operation for displaying the television broadcast video on the display 11 regardless of whether the device is activated or not activated. Therefore, an effect can be expected in suppressing operation errors.

In place of the USB line 17, for example, I
EEE (Institute of Electrical and Electronics Enginee
rs) A 1394 bus or the like may be used.

In the present specification, the term “system” refers to an entire apparatus including a plurality of apparatuses.

[0043]

As described above, according to the display device of the present invention, a television broadcast signal is received in accordance with a user operation to generate a second video signal, and the second video signal is transmitted to a predetermined bus. Since the information processing apparatus is supplied to the information processing apparatus via a keyboard, it is possible to realize a display apparatus that can be operated by a keyboard or a mouse and that can display a video of a television program without activating the information processing apparatus. Become.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an example of the configuration of a conventional personal computer system capable of displaying television broadcast video.

FIG. 2 shows a display 11 according to an embodiment of the present invention.
FIG. 1 is a block diagram illustrating a configuration example of a system that includes a.

FIG. 3 is a block diagram illustrating a configuration example of a display 11;

FIG. 4 is a block diagram illustrating a configuration example of a personal computer 16.

FIG. 5 is a flowchart illustrating a control target switching process performed by a display 11;

[Explanation of symbols]

11 display, 12 TV tuner, 13
Keyboard, 14 mouse, 15 modem, 16
Personal computer, 17 USB line, 32
Microprocessor

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Claims (4)

[Claims] 1. A display device for displaying an image corresponding to a first video signal supplied from an information processing device, comprising: input means for inputting a user operation; Receiving means for receiving a television broadcast signal and generating a second video signal; supplying means for supplying the second video signal to the information processing device via a predetermined bus; Synthesizing means for synthesizing the video signal and the second video signal to generate a third video signal; and synthesizing the first to third video signals in accordance with the operation of the user input by the input means. A display device, comprising: a selection unit that selects one of them; and a display unit that displays an image corresponding to the video signal selected by the selection unit. 2. The input means includes a keyboard, a mouse,
The display device according to claim 1, further comprising at least one of a remote controller and a remote controller. 3. The information processing apparatus according to claim 1, further comprising: a notification unit configured to notify the information of the user operation input by the input unit to the information processing apparatus via the predetermined bus. Display device. 4. The display device according to claim 1, wherein the predetermined bus is a USB.