KR20020036300A - Multi-functional integrated circuit capable of processing voice/image signals - Google Patents

Abstract

PURPOSE: A multifunction integrated circuit is provided to enable a batch processing of voice/video signals, to implement a small communication device, and to remarkably shorten wiring length between each component, so as to reduce parasitic components. CONSTITUTION: A main controller(60) generates a control signal. A video codec(10) receives the control signal to code a video signal output from a camera(100), and outputs the coded signal to the main controller(60) and a modem(200). The video codec(10) decodes a video signal inputted through the modem(200), and outputs the signal to the main controller(60). A voice codec(20) receives the control signal to code a voice signal inputted through a microphone(300), and outputs the coded signal to the main controller(60) or the modem(200), then decodes a voice signal inputted through the modem(200) to output the signal to the main controller(60) or a speaker(400). An input/output interface(30) transmits a user command to the main controller(60), and transmits an inputted video to an LCD panel(500). A USB controller(40) transmits a video and a voice to a USB, to perform a data processing in an external system. A memory interface(50) transmits voice/video signals stored in a memory(700) to the main controller(60), and transmits voice/video signals transmitted through the main controller(60) to the memory(700).

Description

MULTI-FUNCTIONAL INTEGRATED CIRCUIT CAPABLE OF PROCESSING VOICE / IMAGE SIGNALS}

The present invention relates to an integrated circuit embedded in a communication device including a camera, an input / output module, a memory module, and a modem, and more particularly, to a multifunctional integrated circuit capable of collective processing of audio / video signals.

As information and communication technology develops, modern people can communicate not only voice but also images using a communication device (eg, a terminal for IMT-2000, etc.).

Accordingly, the communication apparatus of the prior art includes a voice codec circuit for processing audio, a video codec circuit for processing video, a control circuit for controlling the audio codec circuit and a video codec circuit, and the control circuit to the input / output module. An input / output interface circuit for connecting, and a memory interface circuit for connecting the control element to the memory module.

However, since the communication apparatus of the prior art as described above has to arrange a plurality of circuits performing only a specific function, the cost of manufacturing the communication apparatus is greatly increased, and the parasitic (Parastic) due to the wiring length between the elements There is a problem that the ingredients are large.

SUMMARY OF THE INVENTION An object of the present invention is to provide an integrated circuit capable of collective processing of audio / video signals, which can effectively solve the above problems of the prior art.

1 is a block diagram showing the configuration of a multifunctional integrated circuit capable of collective processing of audio / video signals according to the present invention.

2 is a block diagram showing a use state of an integrated circuit according to the present invention applied to a portable communication device.

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

10: video codec unit 20: voice codec unit

30: input / output interface 40: USB control unit

50: memory interface 60: main control

The present invention for achieving the above technical problem relates to an integrated circuit that is embedded in a communication device equipped with a camera, an input / output module, a memory module and a modem, and capable of collective processing of audio / video signals. An integrated circuit of the present invention includes an image processor for decoding and outputting an image signal received through a modem, and encoding and outputting an image of a subject photographed by the camera; A voice processor for decoding and outputting a voice signal received through the modem, and encoding and outputting a voice input through a microphone; And a main controller generating a control signal for controlling operations of the image processor and the audio processor.

Hereinafter, an integrated circuit capable of collective processing of an audio / video signal according to an exemplary embodiment of the present invention will be described in detail with reference to FIGS. 1 and 2.

1 is a block diagram showing the configuration of a multifunctional integrated circuit capable of collective processing of audio / video signals according to the present invention, and FIG. . In the present exemplary embodiment, the portable communication device may include a camera for capturing an image of a subject and outputting an electrical signal (hereinafter, referred to as a "video signal"), an input / output module for inputting / outputting audio and video; And a modem for transmitting / receiving the audio and video, and a memory for storing the audio and video. The input / output module may include a microphone for converting a user's voice into an electrical signal (hereinafter, referred to as a "voice signal"), a microphone for converting the voice signal into a voice that can be confirmed by the user, and a speaker; A liquid crystal display (LCD) for displaying an image signal and a plurality of keypads for inputting a user's command are included. Preferably, the liquid crystal display panel is a touch screen. The memory may include a fresh memory, a dynamic random access memory (DRAM), an MMC card (Multi Media Card), an SMC card (Smart Media Card), and the like.

Referring to FIG. 1, an integrated circuit capable of collective processing of an audio / video signal according to the present invention includes an image codec unit 10, an audio codec unit 20, an input / output interface 30, and a USB controller 40. , A memory interface 50, and a main controller 60.

The main control unit 60 is connected to the image codec unit 10, the audio codec unit 20, the input / output interface 30, the USB controller 40, and the memory interface 50. Generates a control signal for controlling.

2, the image codec unit 10 is connected to a camera 100 and a modem 200. The image codec unit 10 receives the control signal generated from the main control unit 60 and codes the video signal output from the camera 100 to output to the main control unit 60 and the modem 200. The video signal input through the modem 200 is decoded and output to the main controller 60. Here, the image input to the image codec unit 10 through the modem 200 includes a character.

The voice codec unit 20 is connected to the modem 200, the microphone 300, and the speaker 400. The voice codec unit 20 receives the control signal generated from the main control unit 60 and codes the voice signal input through the microphone 300 to output to the main control unit 60 or the modem 200. The input voice signal input through the modem 200 is decoded and output to the main controller 60 or the speaker 400.

The input / output interface 30 is connected to an input / output module, that is, the liquid crystal display panel 500, the keypad 600, and the main controller 60. The input / output interface 30 transmits a user's command input through the liquid crystal display panel 500 or the keypad 600 to the main controller 60. In addition, the input / output interface 30 receives an image output from the image codec unit 10 through the main control unit 60 and transmits the image to the liquid crystal display panel 500.

The USB controller 40 is connected to a USB (Universal Serial Bus) provided in an external system (for example, a personal computer (PC)). The U SB control unit 40 transmits the image and the audio input through the main control unit 60 to the U SB to enable data processing in the external system.

The memory interface 50 is connected to the main controller 60 and the memory 700. The memory interface 50 transmits audio and video signals stored in the memory 700 to the main controller 60, and transmits audio and video signals transmitted through the main controller 60 to the memory 700. do.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. . Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

As described above, the integrated circuit of the present invention is capable of collectively processing audio / video signals, thereby miniaturizing a communication device, and greatly reducing the parasitic components due to the shorter wiring lengths between components. Can be.

In addition, since one integrated circuit according to the present invention performs substantially the same function as a plurality of devices in the prior art, it is possible to greatly reduce the manufacturing cost of the communication device.

Claims (4)

An integrated circuit embedded in a communication device including a camera, an input / output module, a memory module, and a modem, An image processor which decodes and outputs an image signal received through the modem, and encodes and outputs an image of a subject photographed by the camera; A voice processor for decoding and outputting a voice signal received through the modem, and encoding and outputting a voice input through a microphone; And Main control unit for generating a control signal for controlling the operation of the image processor and the audio processor Integrated circuit capable of collective processing of the audio / video signal, characterized in that it comprises a. The method of claim 1, It is connected to an external system equipped with a USB that can transmit video / audio input from the outside, and receives the control signal generated from the main controller to receive the video / audio information encoded and output from the image processing unit and the audio processing unit. US controller to send to Integrated circuits capable of collective processing of audio / video signals, further comprising a. The method according to claim 1 or 2, A memory interface for interfacing the video and audio communication between the main controller and the memory module Integrated circuits capable of collective processing of audio / video signals, further comprising a. The method of claim 3, An input / output interface unit for interfacing the video and audio communication between the main controller and the input / output module Integrated circuits capable of collective processing of audio / video signals, further comprising a.