KR20030090438A - Apparatus for Processing Key Code provided to a Composite Digital Multimedia System - Google Patents

Abstract

PURPOSE: A device for processing the key input of a complex digital multimedia system is provided to offer a key code encoding device for defining a complex key integrating a new function to a part of keys arranged in a keyboard typed input device and encoding a key code transmitted from the complex key into a control instruction to perform the corresponding function of a module operating on the system. CONSTITUTION: The keyboard typed input device(104) includes the complex keys generating the control instruction to control the function of each module as one single key code. A key code encoding module(114) converts the key code transmitted from the complex key into the control instruction of one module operated on the system. The key code encoding module includes a key code receiver, an operating mode detector, a key code map storing part, and a key code encoding part.

Description

Apparatus for Processing Key Code provided to a Composite Digital Multimedia System}

The present invention relates to a complex digital multimedia system, and more particularly, a DVD (Digital Versatile Disc) module and a High Definition Television (HDTV) module are integrated into a basic configuration of a personal computer (hereinafter, referred to as a "PC"). The present invention relates to an apparatus for processing a key input provided for controlling a complex digital multimedia system.

In general, various digital multimedia devices, such as PCs, DVD players, HDTV set-tops, and the like, have been developed and used as separate devices having separate uses and functions. However, in recent years, as a result of integration of several digital multimedia devices, integration between such multimedia devices has been attempted. For example, integration between digital multimedia devices is an integration of a DVD module and an HDTV module based on a PC module. These complex digital multimedia systems perform PC functions such as computer games, graphics processing, document creation, e-mail, Internet communication, etc., and HDTV functions such as DVD function to play optical discs and HDTV broadcast signals to receive, record, and play HDTV broadcast signals. can do.

Since the operation of such a complex digital multimedia system is usually controlled by input of numeric or letter keys or click input of a mouse, a keyboard or mouse becomes an essential auxiliary device. Among these, the keyboard-type input device is a function of the DVD module in addition to the numeric keys, letter keys, and function keys used in connection with the PC module, for example, the playback of optical discs and the movement of chapters of DVD titles and the HDTV module. A plurality of operation keys are separately provided for controlling functions, for example, reproduction, recording, and the like, of an HDTV broadcast signal. That is, since the key codes of the operation keys for controlling the functions of the respective modules are different for each HDTV module and the DVD module, one operation key is newly added to the keyboard-type input device for each function of each module. In practice, however, in order to reduce the number of operation keys, several operation keys which perform similar functions among the added operation keys, for example, operation keys for controlling the playback function of HDTV and the playback function of DVD, etc. It is composed of composite keys.

In this case, the composite digital multimedia system must allow the composite digital multimedia system to recognize which module controls the function of the key code transmitted from the composite key of the keyboard-type input device. The key code transmitted from the system must be recognized by the composite digital multimedia system.

In the former case, the composite digital multimedia system adopts a mode switching function for selectively switching a mode driven by a PC module, a mode driven by an HDTV module, or a mode driven by a DVD module. This can be solved by making it aware.

In the latter case, the operation of defining a new key code for newly added operation keys and composite keys must be preceded. Defining a new key code is performed by changing a key code related program included in an operating system (OS) of a PC module.

However, changing the key code-related program is not only possible with highly skilled expertise, but also requires a considerable amount of time and effort.

Therefore, the present invention defines a complex key by incorporating new functions into some of the keys arranged in the existing keyboard-type input device and defines the corresponding function of the module running in the integrated digital multimedia system. It is an object of the present invention to provide a key code conversion device that converts a control command to be performed.

1 is a schematic block diagram of a composite digital multimedia system of the present invention;

2 is a detailed block diagram of the PC module shown in FIG.

3 is a detailed block diagram of the DVD module shown in FIG. 1;

4 is a detailed block diagram of the HDTV module shown in FIG. 1;

5 is a detailed block diagram of the keyboard-type input device shown in FIG.

FIG. 6 is a detailed block diagram of the key code conversion module shown in FIG. 1.

<Description of the symbols for the main parts of the drawings>

100: PC system 102: monitor

104: keyboard input device 106: PC module

108: DVD module 110: HDTV module

112: control unit 114: key code conversion module

204: auxiliary memory 208: display control unit

212: network interface 304: optical pickup

306: amplification unit 314, 410: voice processing unit

316, 412: image processor 312, 408: MPEG decoder

404 Tuner 406 Demultiplexer

602: key code receiving unit 604: driving mode detection unit

606: key code map storage unit 608: key code conversion unit

According to an embodiment of the present invention for achieving the above object, an apparatus for processing a key input provided to a complex digital multimedia system in which a plurality of digital multimedia modules are integrated, to control the function of each digital multimedia module A keyboard-type input device having a plurality of composite keys for generating a control command with one corresponding key code; And a key code conversion module for converting the key code transmitted from the composite key of the keyboard-type input device into the control command of any one of the digital multimedia modules running in the composite digital multimedia system.

According to another embodiment of the present invention, an apparatus for processing key input provided to a composite digital multimedia system in which a first digital multimedia module based on a PC module and one or more second digital multimedia modules are integrated is provided. A keyboard-type input device having a plurality of keys for generating a key code for controlling the function of the module, wherein some of the plurality of keys are used as composite keys for controlling the functions of the first and second digital multimedia modules; And a key code conversion module for converting a key code transmitted from the composite key of the keyboard-type input device into a control command for driving the first or second digital multimedia module running in the composite digital multimedia system. do.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail as follows.

1 is a block diagram of a complex digital multimedia system in which a keyboard-type input device of the present invention is used.

The composite digital multimedia system basically includes a PC system 100, a monitor 102, and a keyboard-type input device 104, which includes a PC module 106, a DVD module 108, and an HDTV module. 110, a control unit 112, and a key code conversion unit 114.

The PC system 100 is configured as a composite digital multimedia system by adding individual digital multimedia modules such as the DVD module 108 and the HDTV module 110 based on the PC module 106.

The monitor 102 displays an image processed by the PC system 100.

The keyboard-type input device 104 has a plurality of operation keys for generating key codes for controlling the functions of the PC module 106, the DVD module 108, and the HDTV module 110 in the PC system 100, Some of the many keys are used as composite keys. In addition, the keyboard-type input device 104 transmits the key code generated from the operation key or the composite key to the PC system 100 in a wireless form. The keyboard-type input device 104 may be connected to the PC system 100 by wire like a conventional computer keyboard, but may also communicate in a wireless form using an infrared signal.

The PC module 106 performs various functions of a general PC such as computer games, graphic processing, document creation, e-mail, internet communication, and the like.

The DVD module 108 plays a title such as a moving picture recorded on an optical disc, and the HDTV module 110 performs an HDTV function such as receiving and playing an HDTV broadcast signal.

The control unit 112 may be implemented as a central processing unit (CPU) used in a conventional PC, and the PC module 106, the DVD module 108, and the HDTV module 110 of the PC system 100 may be implemented. It performs the function of controlling overall operation of various components such as.

The key code conversion module 114 converts the key code transmitted from the keyboard type input device 104 into a control command for controlling any one of the modules running in the PC system 100 to correspond to the key code inputted by the corresponding module. To perform the operation.

2 shows a detailed block configuration of the PC module 106.

The PC module 106 includes an input device 202, an auxiliary memory device 204, an input / output interface 206, a display control unit 208, a memory 210, a network interface 212, and a control unit 112.

The input device 202 is a device for inputting various information or commands to the control unit 112 and includes a keyboard or a mouse connected to the PC module 106 by wire or wireless.

The auxiliary storage device 204 includes a hard disk drive, a floppy disk drive, and the like, and in particular, a hard disk drive stores applications including an operating system for driving the PC module 106.

The input / output interface 206 interfaces signals and control commands input and output between the control unit 112 and the input device 202, the auxiliary storage device 204, and the key code conversion module 114.

The display control unit 208 controls to display various information processed by the PC module 106 on the monitor 102 under the control of the control unit 112.

The memory 210 includes a ROM that stores an execution program of the controller 112 or a RAM that temporarily stores a program or data performed by the controller 112.

Network interface 212 is a PC module 106 is a local area network (LAN), data network through the digital subscriber line (xDSL), telephone network through an analog modem, wireless local loop (WLL), International Mobile Telecommunication (IMT-2000) Or wired or wirelessly connected to the outside through the cable TV network. The PC module 106, which is physically and signally connected to an external communication network by the network interface 212, may perform functions such as internet communication, electronic mail transmission and reception, and the like.

The control unit 112 performs a function of controlling overall operations of various components of the PC module 106 of the complex digital multimedia system. The controller 112 used in the PC module 106 is described and illustrated as using the controller 112 of the PC system 100, but alternatively uses a dedicated microprocessor dedicated solely to the control of the PC module 106. It may also be implemented.

FIG. 3 shows a detailed block diagram of the DVD module 108 shown in FIG.

The DVD module 108 includes an optical pickup unit 304, an amplifier unit 306, a demodulator unit 308, a servo 310, an MPEG decoder unit 312, an audio processor unit 314, an image processor unit 316, and an input / output unit. Interface 206 and controller 112.

The optical pickup unit 304 irradiates light to the optical disk 302 using a photodiode (not shown), and then photoelectrically converts light reflected from the optical disk 302 to generate an analog RF signal.

The amplifier 306 amplifies the analog RF signal transmitted from the optical pickup unit 304 into a signal of an appropriate intensity, and the demodulator 308 demodulates the analog RF signal amplified by the amplifier 306 into an MPEG stream. do.

Meanwhile, the servo 310 detects the tracking and focusing error signal of the optical pickup unit 304, corrects the detected tracking and focusing error signal, and then transfers the corrected tracking and focusing error signal to the optical pickup unit 304. By controlling the position of the optical pickup unit 304 so that accurate reproduction of the signal is possible.

The MPEG decoder 312 decodes the MPEG stream provided from the demodulator 308 and separates the MPEG stream into a digital video signal and a digital audio signal.

The voice processor 314 performs a process of converting the digital voice signal transmitted from the MPEG decoder 312 into an analog voice signal so as to be output to a speaker (not shown).

The image processor 316 converts the digital image signal transmitted from the MPEG decoder 312 into an NTSC signal, and outputs the converted NTSC signal to the monitor 102 for display.

Although the preferred embodiment of the present invention describes the NTSC method represented by the North American method as the image transmission and processing method of the television, it is natural that the same technical idea can be applied to the PAL method represented by the European method.

The input / output interface 318 interfaces control commands, such as DVD playback and chapter movement, input and output between the control unit 112 and the key code conversion module 114.

The control unit 112 controls the DVD module 108 by transmitting a control command such as playing the optical disk 302 or moving the chapter to the optical pickup unit 304 according to a control command applied through the input / output interface 318. . The control unit 112 used in the DVD module 108 is described and illustrated as using the control unit 112 of the PC system 100, but alternatively uses a dedicated microprocessor dedicated to the control of the HDTV module 110 individually. It may also be implemented.

4 shows a detailed block diagram of the HDTV module 110 shown in FIG.

The HDTV module 110 includes a tuner 404, a demultiplexer 406, an MPEG decoder 408, a voice processor 410, and an image processor 412.

The HDTV broadcast wave is input to the tuner 404 through the antenna 402. The tuner 404 tunes a frequency to a selected channel according to a channel selection control command provided from a user, and demodulates a broadcast signal of the tuned channel and outputs it in the form of a Motion Picture Expert Group (MPEG) packet stream.

The demultiplexer 406 separates the MPEG packet stream provided from the tuner 404 from accessory information such as MPEG data and program guide information. MPEG data classified by the demultiplexer 406 is provided to the MPEG decoder 408, and accessory information such as program guide information is provided to the controller 112. FIG.

The MPEG decoding unit 408 decodes MPEG data transmitted from the demultiplexer 406 to generate audio data and video data. The voice data decoded by the MPEG decoder 408 is converted into an analog signal through the voice processor 410 and then output to a speaker (not shown). Meanwhile, the image data decoded by the MPEG decoder 408 is converted into an NTSC signal through the image processor 412 and then output to the monitor 102 for display.

The memory 414 stores accessory information such as program guide information provided from the demultiplexer 406. The accessory information such as program guide information stored in the memory 414 is superimposed on the image signal processed by the image processor 412 as OSD (On Screen Display) data under the control of the controller 112 and output to the monitor 102. .

The input / output interface 416 interfaces control commands such as channel selection, HDTV broadcast playback and recording, etc. input and output between the control unit 112 and the key code conversion module 114.

The control unit 112 transmits a control command for channel tuning to the tuner 404 according to a control command applied through the input / output interface 416, and controls the demultiplexer 406 and the MPEG decoder 408. do. Although the control unit 112 used in the HDTV module 110 is described and illustrated as using the control unit 112 of the PC system 100, otherwise, a dedicated microprocessor dedicated to control of the HDTV module 110 is used. It may also be implemented.

5 shows a key arrangement of the keyboard-type input device 104 of the present invention.

As shown in FIG. 5, the keyboard-type input device 104 includes functions of the numeric keys 502 and the character keys 504, the DVD module 108, and the HDTV module 110 used in the PC module 106. It has a plurality of operation keys 506 for controlling.

Numeric key 502 is used as a key that performs the functions of the function keys (Function Key) of the numbers 1 to 10 and F1 to F10, the function keys of F1 to F10 is a key code of the form "shift + function key" Have.

A plurality of operation keys 506 are arranged on the top of the keyboard-type input device 104, "Initial Menu, HDTV, DVD, Internet, E-mail, PC, Menu, Play ▶, Stop ■, Forward ▶▶, Back ◀◀ Key, such as "Pause," Power, Previous Chapter / Channel ▼, Next Chapter / Channel ▲, Subtitle Selection, Volume Down (-), Volume Up (+), Record, Recall ".

The initial menu key is used to select the PC module 106, DVD module 108 or HDTV module 110 of the composite digital multimedia system in PC mode, Internet mode, and e-mail mode, respectively; DVD mode; And an initial menu for selecting to operate in HDTV mode on monitor 102. When the initial menu key is pressed, the monitor 102 includes the PC mode, Internet mode, e-mail mode; DVD mode; And an icon for selecting the HDTV mode. Each of these modes may be advanced to that mode by pressing the PC key, Internet key, e-mail key, DVD key and HDTV key described below instead of selecting each mode on the monitor 102.

The HDTV key is used to switch to the HDTV mode in which the PC system 100 can receive, record, and play HDTV broadcasts.

The DVD key is used to switch the PC system 100 to the DVD mode.

The internet key is used to put the PC system 100 into an internet mode capable of surfing the internet.

The e-mail key is used to switch to an e-mail mode in which e-mail can be used in the PC system 100.

The PC key is used to switch to PC mode in which PC system 100 can use all the functions of a general PC.

The menu key is used to set the DVD menu in DVD mode, and in HDTV mode to set the HDTV menu.

The play key is used to play the optical disc 302 in the DVD mode.

The stop key is used to stop a DVD title to be played back from the optical disc 302 in the DVD mode, to stop the recording state in the HDTV mode or to stop the HDTV recorded file being played back.

The Forward key is used to play DVD titles at 2x, 4x, and 8x speeds in DVD mode.

The back key is used to navigate backwards, twice, four times, and eight times as fast in DVD mode.

The pause key is used to pause the current screen in DVD mode and to pause the recorded file being played in HDTV mode.

The power key is used to turn on and off the PC system 100.

The previous chapter / channel key is used to move the chapter of the DVD title played in DVD mode to the previous chapter, and in HDTV mode to bring down the channel being watched.

The next chapter / channel key is used to move the chapter of the DVD title played in the DVD mode to the next chapter, and in the HDTV mode to up the channel being watched.

The subtitle selection key is used to select a subtitle of a DVD title to be played in the DVD mode, and to change the aspect ratio of the monitor 102 to 16: 9 or 4: 3 in the HDTV mode.

The volume down (-) and volume up (+) keys let you turn the volume up and down in DVD and HDTV modes respectively.

The mute key is used to silence the sound in DVD mode and HDTV mode.

The record key is used to record the channel you are currently watching in HDTV mode.

The Load key is used to bring up a dialog where you can specify a playback file to play back recorded files in HDTV mode.

These multiple operation keys 506 are located at the positions of 12 Function Keys and other special keys of F1 to F12 on the keyboard that can be used by connecting to an existing PC, and are "Ctrl + Function Key" or "Ctrl + Special". Key "in the form of" key ". Among these multiple operation keys 506, some operation keys, for example, a menu key, a stop key, a forward key, a back key, a pause key, a previous chapter / channel key, a next chapter / channel key, a subtitle selection key The volume down key and the volume up key are used as composite keys to perform their respective functions in HDTV or DVD mode. In the present invention, each such composite key is assigned only one key code.

For example, as described above, the previous chapter / channel key is used to move the chapter of the DVD title played in the DVD mode to the previous chapter, and in the HDTV mode to bring down the channel being watched. However, when the previous chapter / channel key is pressed, the keyboard-type input device 104 sends a key code of "Ctrl + F5" to the key code conversion module 114 of the PC system 100.

The key code conversion module 114 receives a key code transmitted from the keyboard-type input device 104, converts the received key code into a control command for driving a module currently driven in the PC system 100, and controls the control unit ( 112). The control unit 112 controls the module being driven in the PC system 100 according to the control command provided from the key code conversion module 114.

6 shows a detailed block configuration of the key code conversion module 114. As shown in FIG.

The key code conversion module 114 includes a key code receiving unit 602, a driving mode detection unit 604, a key code map storage unit 606, and a key code conversion unit 608.

The key code receiving unit 602 receives the key code transmitted from the keyboard-type input device 104 and provides the received key code to the key code converting unit 608.

When the key code is received by the key code receiving unit 602, the driving mode detecting unit 604 selects the PC module 106, the DVD module 108, or the HDTV module 110 that is selectively driven in the PC system 100. By confirming, the driving mode of the PC system 100 is detected. The driving mode detection unit 604 detects an application program of the PC module 106, the DVD module 108, and the HDTV module 110 currently running under an operating system installed in the PC system 100. Can be detected.

The key code map storage unit 606 maps and stores control commands for driving the PC module 106, the DVD module 108, and the HDTV module 110 in an operation corresponding to the key code.

The key code conversion unit 608 searches the key code map storage unit 606 for a control command corresponding to the key code received through the key code receiving unit according to the driving mode detected by the drive mode detection unit 604, and retrieved. The control command is transmitted to the control unit 112 so that the module currently driven in the PC system 100 is driven according to the control command.

The operation of the above-described key code conversion module 114 will be described as an example.

Presently, it is assumed that the user selects the PC system 100 in the HDTV mode by pressing an HDTV key on the keyboard-type input device 104. At this time, when the user presses any one composite key in the keyboard-type input device 104, for example, the previous chapter / channel key, "Ctrl + F5" assigned to the previous chapter / channel key from the keyboard-type input device 104 is displayed. Is transmitted to the key code conversion module 114.

At this time, the drive mode detection unit 604 of the key code conversion module 114 detects that the PC system 100 is being driven in the HDTV mode, and provides the detected HDTV mode to the key code conversion unit 608. .

The key code conversion unit 608 corresponds to the key code "Ctrl + F5" among the control commands for the HDTV module 110 in the key code map storage unit 608 according to the HDTV mode provided from the driving mode detection unit 604. The control command " channel down " is retrieved, and the control command " channel down " Therefore, the HDTV module 110 of the PC system 100 operating in the HDTV mode performs an operation of switching down to the other broadcast channel by downloading the HDTV broadcast channel currently being played on the monitor 102.

In contrast, when the current PC system 100 is operating in the DVD mode, the key code "Ctrl + F5" corresponding to the previous chapter / channel key transmitted from the keyboard-type input device 104 is the key code conversion module 114. Is converted into a control command to move the DVD title to the previous chapter and is passed to the DVD module 108.

However, when the current PC system 100 is operated in the PC mode, the key code "Ctrl + F5" corresponding to the previous chapter / channel key transmitted from the keyboard-type input device 104 is not converted and the PC module 106 remains unchanged. ), So that the function corresponding to "Ctrl + F5" is performed.

It will be appreciated by those skilled in the art that the present invention is not limited to the above embodiments, and that various modifications and changes can be made without departing from the spirit of the present invention.

Therefore, as described above, by using a key of some of the keys of the existing keyboard-type input device as a composite key capable of performing two or more functions, and converting it into a control command to perform the appropriate function, the keyboard You do not have to add a new key for a new function in the type input device.

As a result, it is possible to reduce the cost required by the addition of a new key to the keyboard-type input device.

Claims (11)

An apparatus for processing key input provided by a complex digital multimedia system in which a plurality of digital multimedia modules are integrated, A keyboard-type input device having a plurality of composite keys for generating a control command for controlling the function of each digital multimedia module with one corresponding key code; And And a key code conversion module for converting the key code transmitted from the composite key of the keyboard-type input device into the control command of any one of the digital multimedia modules running in the composite digital multimedia system. Key input processing device in a multimedia system. The method of claim 1, The key code conversion module, A key code receiving unit which receives the key code transmitted from the keyboard type input device; A driving mode detector for detecting a driving mode of a digital multimedia module being driven in the composite digital multimedia system when the key code is received by the key code receiving unit; A key code map storage unit storing the control command for driving the respective digital multimedia modules; And The control command corresponding to the received key code is searched by the key code map storage unit and the searched control command is provided to the composite digital multimedia system according to the determination of the driving mode detector. And a key code conversion unit for driving in response to a command. The method of claim 1, Wherein each of the digital multimedia modules is one of a PC module, an HDTV module, and a DVD module. The method of claim 3, wherein And the composite digital multimedia system further integrates the HDTV module or the DVD module or the HDTV module and the DVD module based on the PC module. The method of claim 4, wherein The PC module is equipped with an operating system, the operating system is loaded with the HDTV module or the DVD module or the application program of the HDTV module and the DVD module, And the driving mode detector detects an application program running under the operating system to determine the driving mode. An apparatus for processing key input provided in a composite digital multimedia system in which a first digital multimedia module based on a PC module and at least one second digital multimedia module are integrated. A keyboard having a plurality of keys for generating a key code for controlling the functions of the first digital multimedia module, some of the keys being used as composite keys for controlling the functions of the first and second digital multimedia modules. Type input device; And And a key code conversion module for converting a key code transmitted from the composite key of the keyboard-type input device into a control command for driving a first or second digital multimedia module running in the composite digital multimedia system. Key input processing device in a composite digital multimedia system. The method of claim 6, The key code conversion module, A key code receiving unit for receiving a key code transmitted from the keyboard type input device; A driving mode detection unit detecting a driving mode of a digital multimedia module being driven in the composite digital multimedia system when a key code is received at the key code receiving unit; A key code map storage unit for storing control commands for operating the first and second digital multimedia modules; And And a key code conversion unit for retrieving a control command corresponding to the received key code from the key code map storage unit and providing the retrieved control command to the composite digital multimedia system according to the determination of the driving mode detection unit. Key input processing device of a composite digital multimedia system. The method of claim 6, And the second digital multimedia module is an HDTV module or a DVD module. The method of claim 6, The keyboard input device is a key input processing device of a complex digital multimedia system, characterized in that it comprises a wired keyboard usable in the PC module. The method of claim 6, The keyboard-type input device may be used in the PC module, the key input processing device of the composite digital multimedia system, characterized in that the wireless keyboard for transmitting the key code to the key code receiving unit of the key code conversion module wirelessly. The method of claim 8, The first digital multimedia module includes an operating system, and the operating system is loaded with an application program of the second digital multimedia module. And the driving mode detector detects whether the application program is being driven under the operating system, and determines the driving mode.