KR100770563B1 - Method and ??? Composite Apparatus for Providing Sound/Graphic Card Function in Multimedia Device - Google Patents

Abstract

The present invention relates to a USB composite device and method for providing a sound / graphics card function in a multimedia device.

The present invention includes a general purpose input / output (GPIO) for performing digital input / output functions, a phase locked loop (PLL) for equalizing the phase of an output signal and a phase of the input signal, and a USB transceiver connected to a personal computer to transmit and receive data. A USB device of a multimedia apparatus, comprising: a memory providing a removable storage function and storing logical CD-ROM information and an autorun program of the multimedia apparatus; An audio / video device providing sound / graphics card functionality; And when the USB composite device is connected to the personal computer using the USB transceiver, transmits audio / video device information and memory information to the personal computer and uses the logical CD-ROM information to logically store the memory. And a microprocessor which allocates a CD-ROM area and controls to provide the sound / graphics card function to the personal computer by executing an autorun program stored in the logical CD-ROM area. Provides USB composite device that provides sound / graphics card function.

According to the present invention, by providing a USB composite device that provides a sound / graphics card function composed of a single chip in a multimedia device, the signal interference phenomenon can be reduced by a single chip configuration, and the production cost and size of the USB composite device can be reduced. When connecting a multimedia device including a USB composite device to a computer, it provides a sound / graphic card function to a computer without a sound / graphic card and creates a logical CD-ROM area to execute a stored autorun program. This solves the hassle of installing a separate executable program on your computer or running it manually.

Sound, Graphics, Audio, Video, USB, AutoPlay, Removable Storage

Description

JP Composite Apparatus for Providing Sound / Graphic Card Function in Multimedia Device}

1 is a block diagram showing a schematic configuration inside a USB composite device providing a sound / graphics card function in a multimedia device according to an embodiment of the present invention;

2 is a flowchart illustrating a method of providing a sound / graphics card function in a multimedia device according to an embodiment of the present invention;

3 is a flowchart illustrating a process of recognizing a logical CD-ROM and a removable storage device in a personal computer according to an exemplary embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

110: GPIO 120: microprocessor

130: audio / video device 140: PLL

150: USB transceiver 160: volatile memory

170: nonvolatile memory

The present invention relates to a USB composite device and method for providing a sound / graphics card function in a multimedia device. More specifically, when a USB composite device is connected to a personal computer, it transfers audio / video device information and nonvolatile memory information to the personal computer, uses the information stored in the nonvolatile memory, or programmatically allocates a CD-ROM area. The present invention relates to a USB composite device and a method for providing a sound card and a graphics card function by executing an autorun program stored in a multimedia device and having a personal computer stored therein.

Generally, a storage medium such as a diskette or a CD-ROM is used to store various data stored in a personal computer. However, such a storage medium has a small storage capacity and is inconvenient to carry and store, and thus cannot safely store data for a long time. There is a problem in that a read-write area and a read-write area etc. are not divided into one storage medium, and a separate playback device must be additionally provided in order to retrieve data stored in the storage medium.

Accordingly, a USB storage device, also called a memory stick that can be connected to a USB port, has been developed and used as a portable storage device. The USB storage device is simply connected to a personal computer to serve as another hard disk of a personal computer, such as storing data stored in the personal computer or storing data stored in the USB device as a personal computer.

In addition, recently, U.S. storage devices equipped with wired / wireless communication devices have been developed and mounted on personal computers, receive broadcasting signals such as DAB (Digital Audio Broadcasting) and DMB (Digital Multimedia Broadcasting), or VoIP (Voice over Internet Protocol) You can now receive calls.

However, in order to perform a variety of functions in addition to the USB storage device in the conventional multimedia device, a large number of chipsets are required, which increases the size of the USB storage device, increases the production cost, and increases the frequency of the transmission signal in the case of USB v2.0. At high speeds of 480 MHz, depending on the PCB layout, they interfere with the chipset's signal, creating noise, or the USB signal itself is easily affected by the surrounding signal, causing problems during data transfer. In order to avoid such interference, there are significant limitations on the PCB layout, and in order to connect multimedia devices to the personal computer to perform the necessary functions, a separate installation program must be installed and executed on the personal computer, or the already installed program must be manually executed. There was a hassle.

In order to solve the above problems, the present invention, when the USB composite device is connected to a personal computer, transmits the audio / video device information and nonvolatile memory information to the personal computer, using the information stored in the nonvolatile memory or programmatically The purpose is to provide a USB composite device and method for creating a logical CD-ROM area in a multimedia device and executing an autorun program in which a personal computer is stored to provide sound card and graphics card functions.

Accordingly, according to a first object of the present invention, a GPIO (General Purpose Input / Output) for performing a digital input / output function, a phase locked loop (PLL) for equalizing a phase of an output signal and a personal computer, A USB composite device of a multimedia apparatus including a USB transceiver for transmitting and receiving data, the apparatus comprising: a memory providing a portable storage function and storing logical CD-ROM information and an autorun program of the multimedia apparatus; An audio / video device providing sound / graphics card functionality; And when the USB composite device is connected to the personal computer using the USB transceiver, transmits audio / video device information and memory information to the personal computer and uses the logical CD-ROM information to logically store the memory. And a microprocessor which allocates a CD-ROM area and controls to provide the sound / graphics card function to the personal computer by executing an autorun program stored in the logical CD-ROM area. Provides USB composite device that provides sound / graphics card function.

According to a second object of the present invention, there is provided a method of providing a sound / graphics card function in a multimedia device connected to a personal computer, comprising the steps of: (a) connecting to the personal computer; (b) determining whether a preinstalled sound card and a graphics card exist; (c) determining whether to use the preinstalled sound card and the graphics card when it is determined in step (b) that the preinstalled sound card and the graphics card exist; (d) transmitting audio / video device information and nonvolatile memory information to the personal computer when it is determined in step (c) that the preinstalled sound card and the graphics card are not used; (e) allocating logical CD-ROM regions using logical CD-ROM information; (f) executing an autorun program in the logical CD-ROM area; And (g) providing a sound card and a graphics card function to the personal computer.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

Although the exemplary embodiment of the present invention has been described as including the nonvolatile memory 170 inside the USB composite apparatus 100, the present invention is not limited thereto, and the USB composite apparatus 100 includes a nonvolatile device. It is preferable that the memory 170 can be connected.

1 is a block diagram showing a schematic configuration inside a USB composite device that provides a sound / graphics card function in a multimedia device according to an embodiment of the present invention.

USB composite device 100 providing a sound / graphics card function according to a preferred embodiment of the present invention is a general purpose input / output (GPIO) 110, microprocessor 120, audio / video device 130, PLL (Phase Locked Loop) 140, USB transceiver 150, volatile memory 160, nonvolatile memory 170, and the like. Here, the USB composite device 100 according to the preferred embodiment of the present invention is preferably configured as a single chip.

GPIO 110 according to an embodiment of the present invention is a port for performing a digital input and output function, and is connected to a broadcast receiving module (not shown) to broadcast broadcast signals such as DAB (Digital Audio Broadcasting) and DMB (Digital Multimedia Broadcasting). Receives or connects to a Voice over Internet Protocol (VoIP) module (not shown) to transmit and receive call signals.

The microprocessor 120 according to the preferred embodiment of the present invention may store audio / video device information and nonvolatile memory information when the USB composite device 100 is connected to the personal computer 200 using the USB transceiver 150. Transfer a portion of the nonvolatile memory 170 into a logical CD-ROM area by using the logical CD-ROM information stored in the nonvolatile memory 170, It executes the stored autorun program to control the personal computer 200 to provide the function of the USB composite apparatus 100. Here, the logical CD-ROM is an optical CD-ROM storage device is optical, but is implemented in the non-volatile memory 170 according to the preferred embodiment of the present invention is a CD-ROM in the personal computer 200, but physically Refers to a different concept than conventional CD-ROMs.

The audio / video device 130 according to the preferred embodiment of the present invention is a sound card for processing audio data and a graphics card for processing video data when the USB composite device 100 of the multimedia apparatus is connected to the personal computer 200. Provide the functionality to the personal computer 200.

The PLL 140 according to a preferred embodiment of the present invention detects the phase difference between the input signal and the output signal, controls the phase of the output signal generator with a voltage proportional thereto, and equalizes the phase of the output signal with the phase of the input signal. It is a circuit. Here, the input frequency of the USB transceiver 150 is converted to 24 MHz, which is the input frequency of the USB composite apparatus 100 using the PLL 140 at 48 MHz.

USB transceiver 150 according to a preferred embodiment of the present invention supports USB v1.1 (Full Speed, 12Mbps) ~ USB v2.0 (High Speed, 480Mbps), personal computer 200, such as desktop computers and notebook computers ) To send and receive data.

The volatile memory 160 according to an exemplary embodiment of the present invention is a data buffer of the USB composite apparatus 100 and performs a function of temporarily storing data generated while processing various data.

Non-volatile memory 170 according to a preferred embodiment of the present invention provides a removable storage device function for storing data, such as documents, images, music and video received from the personal computer 200 through the USB transceiver 150 It creates a logical CD-ROM area and stores autorun programs in the logical CD-ROM area. Here, since the autorun program is in the logical CD-ROM area, it cannot be modified or deleted in the usual way.

In addition, the nonvolatile memory 170 according to a preferred embodiment of the present invention stores autorun programs and setting information to operate according to the setting information when the multimedia device is connected to the personal computer 200. Here, the setting information refers to information of a multimedia device, a program required for automatic execution, information necessary for a program, and detailed information necessary for the USB composite apparatus 100 to perform a sound / graphic card function. For example, if the multimedia device has a VoIP function as an additional function, when the personal computer 200 is connected to the personal computer 200, the VoIP application is automatically executed by the autorun program function of the logical CD-ROM, and the user's environment is stored. Read and set in accordance with the information, the multimedia device acts as a sound card of the personal computer 200 and performs the VoIP operation.

The nonvolatile memory 170 according to an exemplary embodiment of the present invention performs a removable storage function and has logical CD-ROM information. Here, the logical CD-ROM information may itself be a logical CD-ROM area or may contain information for configuring a logical CD-ROM in another memory. The logical CD-ROM is configured in the format of CDFS (CD File System) to allow the personal computer 200 to control in the same manner as a CD-ROM drive.

The autorun program exists in the logical CD-ROM area, and when the multimedia device is connected to the personal computer 200, the autorun program is executed using the autorun function (Autorun) of the CD-ROM.

In addition, the removable storage area is configured as a FAT (File Allocation Table) to allow the personal computer 200 to read and write.

The FAT is a file information allocation area and contains information on a location where a file is stored in memory, a file size, an attribute, and the like. Since FAT manages memory in cluster units, it records the empty clusters and the clusters in use. If a file is stored in multiple clusters, the FAT records and manages the location and order of each cluster that stores files.

2 is a flowchart illustrating a method of providing a sound / graphics card function according to a preferred embodiment of the present invention.

Referring to FIG. 2, the microprocessor 120 connects the USB composite apparatus 100 to a personal computer 200 such as a desktop computer and a notebook computer using the USB transceiver 150 (S210).

The microprocessor 120 determines whether there is a pre-installed sound card and graphics card (S220). If it is determined that there is no existing sound card and graphics card, the process proceeds to step S240.

If it is determined in step S220 that the pre-installed sound card and graphics card exist, the microprocessor 120 determines whether to use the pre-installed sound card and graphics card (S230).

The microprocessor 120 transmits the audio / video device information and the nonvolatile memory information to the personal computer 200 when it is selected not to use the pre-installed sound card and graphics card in step S230 (S240).

The microprocessor 120 allocates a logical CD-ROM area using logical CD-ROM information stored in the nonvolatile memory 160 (S250).

The microprocessor 120 executes an autorun program in a logical CD-ROM area (S260).

The microprocessor 120 provides sound card and graphics card functions to the personal computer 200 (S270).

The microprocessor 120 controls to use the sound card and graphics card pre-installed in the personal computer 200 when it is selected to use the pre-installed sound card and graphics card in step S230 (S232).

3 is a flowchart illustrating a process of recognizing a logical CD-ROM and a removable storage device in a personal computer according to an exemplary embodiment of the present invention.

Referring to FIG. 3, the USB composite apparatus 100 transmits information of a removable disk to a class and a subclass of the personal computer 200 according to a configuration descriptor request (S310).

The USB composite apparatus 100 transmits the MaxLun value to the personal computer 200 according to the GetMaxLun command (S320). Where MaxLun is a unique number to identify the removable storage device and the CD-ROM.

The USB composite device 100 transmits a peripheral device type value (eg, Peripheral Device Type = 5) indicating the CD-ROM to the personal computer 200 according to an Inquiry request for the first Lun (S330). Here, the peripheral device is a device that complies with the Multimedia Card (MMC) -x standard.

The USB composite device 100 transmits a peripheral device type value (eg, Peripheral Device Type = 0) indicating a removable storage device to the personal computer 200 according to an inquiry request for the second Lun (S340). Here, the peripheral device is a device that complies with the SBC (Smart Bitrate Control) standard.

The USB composite apparatus 100 transmits CD-ROM information to the personal computer 200 according to the command of the MMC-x standard (S350).

The USB composite device 100 transmits the removable storage device information to the personal computer 200 according to the command of the SBC standard (S360).

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

As described above, according to the present invention, by providing a USB composite device that provides a sound / graphics card function composed of a single chip in a multimedia device, the signal interference phenomenon can be reduced by a single chip configuration, and the production cost of the USB composite device is provided. And size, and when connected to a computer with a multimedia device including a USB composite device, it provides the sound / graphics card function to a computer without a sound / graphics card and creates a logical CD-ROM area for automatic execution. By having the program run, you can solve the hassle of installing or running it separately on your computer.

Claims (10)

A general purpose input / output (GPIO) for performing digital input / output functions, a phase locked loop (PLL) for equalizing the phase of an output signal and a phase of the input signal, and a USB transceiver connected to a personal computer for transmitting and receiving data; In a USB composite device of a multimedia device that provides sound / graphic card function to a personal computer, A memory providing a removable storage function and storing logical CD-ROM information and an autorun program of the multimedia apparatus; An audio / video device providing sound / graphics card functionality; And When the USB composite device is connected to the personal computer using the USB transceiver, the audio / video device information and the memory information are transmitted to the personal computer, and the logical CD-ROM information is stored in the memory using the logical CD-ROM information. A microprocessor that allocates a ROM area and controls to provide the sound / graphics card function to the personal computer by executing an autorun program stored in the logical CD-ROM area. USB composite device that provides a sound / graphics card function in a multimedia device comprising a. The method of claim 1, The USB composite device is a USB composite device that provides a sound / graphics card function in a multimedia device, characterized in that configured as a single chip. The method of claim 1, And the memory is a non-volatile memory. The method of claim 1, The memory stores setting information to operate according to the setting information when the USB composite device is connected to the personal computer, wherein the setting information is information of the multimedia device, a program required for automatic execution, and information necessary for the program. And a USB composite device providing a sound / graphic card function in a multimedia apparatus, characterized in that the composite device 100 is detailed information necessary to perform a sound / graphic card function. delete The method of claim 1, The USB composite device stores the autorun program in the logical CD-ROM area and automatically executes the autorun program when connected to the personal computer. USB composite device. The method of claim 1, And the memory is located outside the USB composite device and connects to the USB composite device. In the method of providing a sound / graphics card function in a multimedia device connected to a personal computer, (a) connecting with the personal computer; (b) determining whether a preinstalled sound card and a graphics card exist; (c) determining whether to use the preinstalled sound card and the graphics card when it is determined in step (b) that the preinstalled sound card and the graphics card exist; (d) transmitting audio / video device information and nonvolatile memory information to the personal computer when it is determined in step (c) that the preinstalled sound card and the graphics card are not used; (e) allocating logical CD-ROM regions using logical CD-ROM information; (f) executing an autorun program in the logical CD-ROM area; And (g) providing sound card and graphics card functionality to the personal computer Method for providing a sound / graphics card function in a multimedia device comprising a. The method of claim 8, wherein between step (b) and step (c), (b1) transmitting the audio / video device information and the nonvolatile memory information to the personal computer when it is determined in step (b) that the preinstalled sound card and the graphics card do not exist; (b2) allocating logical CD-ROM regions using logical CD-ROM information; (b3) executing an autorun program of the logical CD-ROM area; And (b4) providing sound card and graphics card functions to the personal computer; Method for providing a sound / graphics card function in the multimedia device, characterized in that it further comprises. The method of claim 8, wherein after step (f): (g) using the sound card and the graphics card pre-installed in the personal computer when determining that the sound card and the graphics card are already installed in the step (c). Method for providing a sound / graphics card function in the multimedia device, characterized in that it further comprises.

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