KR100604571B1 - mobile terminal with integrated camera module and television receiver module - Google Patents

Abstract

The present invention relates to a mobile communication terminal capable of watching TV detachable external TV receiving module to the camera phone.

According to the present invention, since most of the circuits necessary for the TV function are detachably implemented, the main body can be maintained at the same level as the existing terminal. In addition, a single TV receiving module can be used, for example, GSM, CDMA, cellular, etc. There is an advantage in that it can be applied to a variety of models.

The mobile communication terminal according to an additional aspect of the present invention is detachably coupled to the camera unit for converting and outputting the optical signal input from the lens system into an electrical signal, and the main body, and extracts the video signal from the TV signal received over the air Characterized in that it includes all the TV receiver for outputting. According to an advantageous aspect of the present invention, the camera unit and the TV receiving unit output image data of the same type, which are configured to be selectively processed by a single signal processing unit.

Mobile Phone, Mobile Phone, Camera, TV, Television, Bus, Detachment, Separation, External Type

Description

Camera phone with TV reception function {mobile terminal with integrated camera module and television receiver module}

1 illustrates an appearance of a mobile communication terminal according to an exemplary embodiment of the present invention.

2 is a block diagram schematically showing the configuration of a mobile communication terminal according to an embodiment of the present invention.

3 is a block diagram illustrating the embodiment of FIG. 1 in more detail.

4 illustrates an embodiment of a tuner unit of a TV receiver.

5 is a block diagram schematically showing the configuration of a mobile communication terminal according to another preferred embodiment of the present invention.

6 is a block diagram illustrating the embodiment of FIG. 5 in more detail.

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

100: phone control unit 110: communication control unit

130: system control unit 210: voice input and output circuit

220: audio output unit 230: wireless communication unit

250: keypad 270: display unit

290: flash memory 300: signal processing unit

310: control unit 321: image processing unit

323: image output unit 331: memory control unit

333: memory interface 351: external chip control unit

353: bus interface unit 355: media interface unit

361: audio processor 363: audio interface

500: camera unit 510: imaging unit

530: conversion unit 550: camera control unit

571: chip selector 573: bus interface

590 lens system

700: TV receiver 710: tuner unit

750: TV control unit 771: chip selection unit

773: bus interface unit 790: audio processing unit

The present invention relates to a mobile communication terminal, and more particularly to a mobile communication terminal capable of camera shooting and TV reception.

With the expansion of mobile communication terminals, technology in this field is developing. Due to consumer demand and competition among companies, various functions are being added every day.

Terminals equipped with cameras have become popular enough to occupy a large part of terminals that are newly introduced in recent years. In addition, recently, a mobile communication terminal with a TV viewing function has been released. Along with the increase in memory capacity, this trend is accelerating the personalization of multimedia devices.

In the case of a terminal having a TV viewing function, which is called a conventional "T-phone", the terminal parts and TV function-related parts are implemented on a single printed circuit board, so that the overall size is compact, but the size of the terminal body is usually Compared to the mobile terminal, there is a problem that the TV signal interferes with the RF circuit for voice and data communication.

On the other hand, in a terminal with emphasis on portability, implementing such a large number of functions requires not only a physical problem of securing a necessary space in the terminal but also an efficient architecture for proper control between systems. Moreover, designing a new system architecture every time has been very inefficient in terms of cost and time due to the frequently added features.

SUMMARY OF THE INVENTION The present invention is derived from this background, and an object of the present invention is to provide a mobile communication terminal capable of minimizing radio interference between components related to a TV function and components for voice and data communication.

Furthermore, an object of the present invention is to provide a compact mobile communication terminal capable of watching TV while reducing the size of the main body.

Furthermore, an object of the present invention is to propose a system architecture that operates efficiently in a mobile communication terminal having a camera and a TV viewing function.

In addition, an object of the present invention is to propose a compact system architecture capable of uniform and systematic control between modules in a terminal.

It is further an object of the present invention to present a system architecture that is easy to design upon addition of new functional modules.

The mobile communication terminal according to an aspect of the present invention for achieving the above object is characterized in that the TV receiver is detachably coupled to extract the video signal from the TV signal received in the air over the body.

According to this aspect of the present invention, since most circuits necessary for the TV function are detachably implemented, the main body can be maintained at the same level as that of the existing terminal. In addition, as a single TV receiving module, for example, GSM, CDMA It is an advantage that can be applied to various models, such as a cellular method and further various models.

The mobile communication terminal according to an additional aspect of the present invention is detachably coupled to the camera unit for converting and outputting the optical signal input from the lens system into an electrical signal, and the main body, and extracts the video signal from the TV signal received over the air It characterized in that it comprises a TV receiving unit for outputting. According to an advantageous aspect of the present invention, the camera unit and the TV receiving unit output image data of the same type, which are configured to be selectively processed by a single signal processing unit.

According to this aspect of the present invention, the terminal according to the present invention, in adding a TV reception function to the existing camera phone, it is possible to efficiently operate the entire system while minimizing the existing hardware and the minimum number of newly added parts Do.

Furthermore, the mobile communication terminal according to an additional aspect of the present invention enables the media data in the terminal to be formatted in a single format so that it can be distributed on the same physical bus and can be logically handled by the same processing. Furthermore, each functional module is accessible by the main module via the control bus, so that individual functions in each module can be controlled by the main module.

According to this aspect of the present invention, the mobile communication terminal according to the present invention is capable of unified control of the modules constituting the entire system, and furthermore, the hardware design becomes very simple since it only needs to be incorporated into the bus when a new module is added. In addition, it is possible to present a standard basic structure in software design.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily understand and reproduce the present invention.

1 illustrates an appearance of a mobile communication terminal according to an exemplary embodiment of the present invention. As shown, the mobile communication terminal according to the present embodiment includes a TV receiving module detachably manufactured and a main body of the mobile communication terminal. The TV receiving module and the main body are connected via a connector. The TV receiving module has its own TV receiving antenna.

2 is a block diagram schematically showing the configuration of a mobile communication terminal according to an embodiment of the present invention. As shown, the mobile communication terminal according to the present embodiment includes a phone control unit 100, its circuits, and a TV receiver 700, which are largely common to existing mobile communication terminals, and have a detachable TV receiver module. And a signal processor 300.

The accessory circuits include a keypad 250, a display unit 270 for displaying menus and operating states, a wireless communication unit 230 for extracting voice and data signals from a wireless signal transmitted and received through an antenna, and a voice call from the wireless communication unit. And a voice input / output circuit 210 for inputting and outputting signals through a microphone and a speaker.

The keypad 250 and the display unit 270 which is a liquid crystal display device may have a conventional well-known configuration. In addition, the wireless communication unit 230 is configured to include an antenna and RF circuit for communication with the base station. In the present specification, the wireless communication unit is interpreted to cover not only various versions of CDMA but also existing methods such as cellular, GSM, and W-CDMA, as well as mobile communication. The voice input / output circuit 210 processes a conversion of digital voice data into an analog voice signal or vice versa, and has a known configuration including an additional circuit such as an audio amplification circuit or a filter.

The baseband circuit of the wireless communication unit 230 and most of the circuits of the phone control unit 100 are commercially provided as a single integrated circuit. This integrated circuit, commonly referred to as an MSM chip, includes internally dedicated hardware for processing communications, a digital signal processor and a general purpose microprocessor. Logically, these include a communication processor 110 for controlling voice and data communication, and a system controller 130 for controlling the entire system according to an operation signal or an operation state input from a keypad.

3 is a block diagram illustrating the embodiment of FIG. 2 in more detail. As shown, the TV receiver 700 according to an embodiment extracts and outputs an image signal from a TV signal received through airwaves.

The signal processor 300 was originally developed by the present applicant for signal processing of a camera phone, and according to the characteristic structure of the present invention, the TV receiver 700 was adopted as it is without any special structural change. In addition, it is a characteristic advantage of the present invention that the existing signal processing unit 300 for the camera unit 500 can be used in common without adding a separate signal processing module for the TV receiving unit 700. The signal processor 300 processes an image signal output from the TV receiver 700 and outputs the image signal to the display unit 270.

According to a characteristic aspect of the present invention, the signal processor 9300 controls the operation of the TV receiver by using a serial bus. In one embodiment, the serial bus is an I ² C bus. Also called Inter-IC, I ² C is a two-wire, bidirectional serial bus that provides a communication link between integrated circuits. Philips introduced the I ² C bus 20 years ago for mass production products such as TVs, VCRs and audio equipment.

In the present invention, the video signal inside the terminal is distributed on the bus in a single format, which in one embodiment is the YUV format. Therefore, each image processing module converts the internal output into YUV format and outputs the internal input. The interface configuration with the outside will be described later in detail.

In one embodiment, the TV receiver 700 includes a tuner unit 710 for demodulating the radio broadcast signal received from the antenna, a decoder unit 730 for decoding the demodulated broadcast signal and outputting it as digital data; TV control unit 750 for controlling the operation according to the control command signal of the. The TV receiver 700 includes an antenna for receiving an air wave signal. This antenna may exist separately from the antenna for mobile communication, or in the case of a strip patch antenna type, may be physically shared as one antenna.

The tuner unit 710 may be one of the existing analog broadcast tuners such as NTSC and PAL, or a common tuner that supports all of them. In another embodiment, the tuner 710 may be a multimedia broadcasting for mobile communication, such as a satellite based digital multimedia broadcasting (DMB) scheme or a wireless LAN based multimedia broadcasting.

4 illustrates one embodiment of a tuner portion 710. The radio broadcast signal received from the antenna passes through the UHF filter 711 and the VHF filter 712, and is separated into a signal of the UHF band and a signal of the VHF band, respectively. Signals in each band are filtered through their respective Low Noise Amplifiers (713, 714). The filtered signal is supplied to the PLL IC 717 to select a signal for each channel according to a channel tuning command, mixed with a local oscillator, and demodulated into an intermediate frequency signal. At this time, the local oscillation frequency for each signal is supplied from a voltage controlled oscillator (715, 716) for each band. The oscillation frequencies of these oscillators are controlled by the TV control unit 750 of FIG. 2 which controls channel tuning. The first demodulated intermediate frequency signal is second demodulated by an IF (Intermediate Frequency) signal processor 725 and outputs to an image output unit 726 and an audio output unit 727 as analog video signals and audio signals, respectively. . In this case, the IF signal processor is controlled by the TV controller 750 of FIG. 3 that controls channel tuning. In addition, the output level, ie, volume, of the voice output unit 727 is controlled by the TV control unit 750 of FIG. 3.

In one embodiment, the decoder 730 generates and outputs a digital YUV signal from the analog video output of the video output unit 726. The operation of the decoder unit is controlled by the TV control unit 750.

In an exemplary embodiment, the signal processor 300 may include a media interface 355 that receives an image signal, an image processor 321 that compresses or signals a received signal input from the media interface 355, and an image. The image output unit 323 converts the image signal processed by the processing unit 321 into display data and outputs it, the bus interface unit 353 for controlling the operation of the TV receiving unit 700, the external module and the signal processing unit as a whole. It includes a control unit 310 for controlling the operation.

The media interface unit 355 receives 8-bit image data in YUV format and buffers it in the internal memory. The image processing unit 321 converts a progressive scan type TV signal into a sequential scan method, interpolates and / or scales them to fit the resolution of the display device, and further scales them to an internal memory. It includes a codec for storing or decompressing image data. In one embodiment, the codec includes an MPEG encoder / decoder and a JPEG encoder / decoder for compressing, storing and reading the captured image frame as a still image. These are implemented by the DSP and the core. In addition, the image processor 321 may include a sharpness enhancement circuit for improving image quality, and a contrast and contrast control function. You can even include some simple filter functions to give you graphical effects.

In an exemplary embodiment, the image output unit 323 outputs the image data output directly from the media interface unit 355 or from the image processing unit 321 to the display unit 270 in a 16-bit RGB data format. In the present exemplary embodiment, the image received by the TV receiver 700 may be compressed by the image processor 321 in an MPEG manner and stored in the flash memory 290 via the memory controller 331 and the memory interface 333. . In addition, the image received by the TV receiver 700 is frame-captured by the image processor 321 and compressed in a JPEG manner to be stored as a still image in the flash memory 290 via the memory controller 331 and the memory interface 333. Can be. Also, the moving image or the still image stored in the flash memory 290 may be decompressed by the image processor 321 and displayed on the display unit 270 through the image output unit 323.

The mobile communication terminal according to an additional aspect of the present invention further includes a flash memory 290 for storing data processed by the signal processor, and the signal processor 300 further includes a memory controller 331 for controlling the flash memory. . In one embodiment, the flash memory may be a card type removable memory. The memory controller 331 is a configuration known as a flash memory controller that controls write and read operations to and from the flash memory 290. The flash memory 290 is interfaced to the signal processor 300 chip by the memory interface 333. In one embodiment, the memory interface 333 supports a detachable operation of the flash memory 290 provided as a removable card type. In one embodiment, flash memory 290 may be a SIMM card.

Hereinafter, a control configuration of the TV receiver 700 of the signal processor 300 serving as a host in media signal processing will be described in detail with reference to FIG. 2.

According to a characteristic aspect of the present invention, the TV receiver 700 includes a chip selector 771 that receives a chip select signal of an external chip controller 351 of the signal processor 300, and a serial bus from the signal processor 300. A bus interface unit 773 for receiving a control signal, and a TV control unit 750 for controlling an operation according to control signals received from the chip selector 771 and the bus interface unit 773.

According to a characteristic aspect of the present invention, the signal processor includes a media interface unit 355 for receiving an image signal from the TV receiver 700, an external chip controller 351 for chip select the TV receiver 700, and a TV. The bus interface 353 controls the operation of the receiver 700, and the controller 310 controls an external module through the external chip controller 351 and the bus interface 353.

At this time, according to an additional aspect, the control unit 310 of the signal processor 300 may separately access the tuner unit 710 and the decoder unit 730 of the TV receiver 700 by assigning a plurality of addresses to the bus interface unit 353. To control.

In one embodiment, the external chip control unit 351 and the chip selector 771 operate by known chip select logic. The external chip controller 351 selects and selects the TV receiver 700. The chip selector 771 detects this signal and prepares each control unit 550 for operation.

Once one module is selected by the external chip control unit 351, the control unit 310 of the signal processing unit 300 sets the operating environment of these modules via the bus interface unit 353 or the bus interface unit 353 even during operation. ) To control the operation of each module. In one embodiment, the communication interface of the bus interface portions 353, 573, 773 is an I ² C bus. In the TV receiver 700, one address may be allocated to each of channel selection, audio output level, and decoder operation. The controller 310 may control an operation of changing a TV channel, adjusting a volume, or changing the format of an output image by recording a control command at these addresses through the bus interface 353.

5 is a block diagram schematically showing the configuration of a mobile communication terminal according to another preferred embodiment of the present invention. As shown, the mobile communication terminal according to the present embodiment includes a phone control unit 100 and its subcircuits, a camera unit 500, and a TV receiver 700, which are largely common to existing mobile communication terminals. It is configured to include a removable TV receiving module and the signal processing unit 300.

The accessory circuits include a keypad 250, a display unit 270 for displaying menus and operating states, a wireless communication unit 230 for extracting voice and data signals from a wireless signal transmitted and received through an antenna, and a voice call from the wireless communication unit. And a voice input / output circuit 210 for inputting and outputting signals through a microphone and a speaker.

The keypad 250 and the display unit 270 which is a liquid crystal display device may have a conventional well-known configuration. In addition, the wireless communication unit 230 is configured to include an antenna and RF circuit for communication with the base station. In the present specification, the wireless communication unit is interpreted to cover not only various versions of CDMA but also existing methods such as cellular, GSM, and W-CDMA, as well as mobile communication. The voice input / output circuit 210 processes a conversion of digital voice data into an analog voice signal or vice versa, and has a known configuration including an additional circuit such as an audio amplification circuit or a filter.

The baseband circuit of the wireless communication unit 230 and most of the circuits of the phone control unit 100 are commercially provided as a single integrated circuit. This integrated circuit, commonly referred to as an MSM chip, includes internally dedicated hardware for processing communications, a digital signal processor and a general purpose microprocessor. Logically, these include a communication processing unit 110 for controlling voice and data communication, and a system control unit 130 for controlling the entire system according to an operation signal or an operation state input from a keypad.

6 is a block diagram illustrating the embodiment of FIG. 5 in more detail. As shown, the camera unit 500 converts an optical signal input from the lens system into an electrical signal and outputs the electrical signal. In addition, the TV receiver 700 extracts and outputs an image signal from the TV signal received in the airwaves.

The signal processor 300 was originally developed by the present applicant for signal processing of a camera phone, and according to the characteristic structure of the present invention, the TV receiver 700 was adopted without any special structural changes even though the TV receiver 700 was added. . In addition, it is a characteristic advantage of the present invention that the existing signal processing unit 300 for the camera unit 500 can be used in common without adding a separate signal processing module for the TV receiving unit 700. The signal processor 300 may alternatively process one of the first image signal output from the camera unit 500 and the second image signal output from the TV receiver 700 and output the same to the display unit 270.

According to a characteristic aspect of the present invention, the signal processing unit 300 includes an external chip control unit 351 for selectively selecting the camera unit 500 and the TV receiving unit. In one embodiment, the external chip control unit 351 is implemented by chip select logic provided in a typical IC chip.

According to another characteristic aspect, the signal processor 9300 controls the operation of the camera unit and the TV receiver by using a serial bus. In one embodiment, the serial bus is an I ² C bus. Also called Inter-IC, I ² C is a two-wire, bidirectional serial bus that provides a communication link between integrated circuits. Philips introduced the I ² C bus 20 years ago for mass production products such as TVs, VCRs and audio equipment.

In an exemplary embodiment, the camera unit 500 may include a lens system 590, an imaging unit 510 for converting an optical signal from the lens system 590 into an analog electric signal, and a signal output from the imaging unit 510. A conversion unit 530 for processing and converting into a format suitable for input of the signal processing unit after the digital conversion, and a camera control unit 550 for controlling the operation of the entire module.

The lens system 590 is configured of one or more small lenses, and collects and supplies light to the imaging unit 510. The imaging unit 510 is a conventional CMOS imaging device or CCD imaging device, and is a known device that converts light into an electrical signal for each pixel and sequentially outputs it in synchronization with a clock. The converting unit 530 converts the current or voltage proportional to the image brightness output from the imaging unit 510 into digital data through some processing, converts the data value into YUV format, and outputs the converted data. In another embodiment, the conversion unit 530 may further include a codec for compressing the photographed image in the JPEG format or the MPEG format, as in the known camera module.

In the present invention, the video signal inside the terminal is distributed on the bus in a single format, which in one embodiment is the YUV format. Therefore, each image processing module converts the internal output into YUV format and outputs the internal input. The controller 550 controls the operation of each internal module according to the command data from the outside. In the camera unit 500, the camera controller 550 may be implemented as a microprocessor or may be configured by simple digital logic. The interface configuration with the outside will be described later in detail.

In one embodiment, the TV receiver 700 includes a tuner unit 710 for demodulating the radio broadcast signal received from the antenna, a decoder unit 730 for decoding the demodulated broadcast signal and outputting it as digital data; TV control unit 750 for controlling the operation according to the control command signal of the. The TV receiver 700 includes an antenna for receiving an air wave signal. This antenna may exist separately from the antenna for mobile communication, or in the case of a strip patch antenna type, may be physically shared as one antenna.

The tuner unit 710 may be one of the existing analog broadcast tuners such as NTSC and PAL, or a common tuner that supports all of them. In another embodiment, the tuner 710 may be a multimedia broadcasting for mobile communication, such as a satellite based digital multimedia broadcasting (DMB) scheme or a wireless LAN based multimedia broadcasting. In this embodiment, the tuner portion 710 is the same as in the previous embodiment.

In one embodiment, the decoder 730 generates and outputs a digital YUV signal from the analog video output of the video output unit 726. The operation of the decoder unit is controlled by the TV control unit 750.

In one embodiment, the signal processing unit 300 compresses or signals the media interface unit 355, which receives the first image signal or the second image signal, and the Youngshin signal input from the media interface unit 355. Controls the operations of the image processing unit 321 for processing, the image output unit 323 for converting the image signal processed by the image processing unit 321 into display data, and outputting the display data. And a control unit 310 for controlling the overall operation of the external module and the signal processor.

The media interface unit 355 receives 8-bit image data in YUV format and buffers it in the internal memory. The image processor 321 converts the progressive scan type TV signals into a sequential scan method, and scales them by interpolation and / or decimation processing to match the resolution of the display device. A codec is included for storing or decompressing image data. In one embodiment, the codec includes an MPEG encoder / decoder and a JPEG encoder / decoder for compressing, storing and reading the captured image frame as a still image. These are implemented by the DSP and the core. In addition, the image processor 321 may include a sharpness enhancement circuit for improving image quality, and a contrast and contrast control function. You can even include some simple filter functions to give you graphical effects.

In an exemplary embodiment, the image output unit 323 outputs the image data output directly from the bus interface unit 353 or from the image processing unit 321 to the display unit 270 in a 16-bit RGB data format. In the present exemplary embodiment, the image captured by the camera unit 500 or the image received by the TV receiving unit 700 is compressed by the image processing unit 321 in an MPEG manner and then passes through the memory control unit 331 and the memory interface 333. It may be stored in the flash memory 290. In addition, the image captured by the camera unit 500 or the image received by the TV receiving unit 700 is frame-captured by the image processing unit 321 is compressed in a JPEG method and flashed through the memory control unit 331, the memory interface 333 The memory 290 may be stored as a still image. Also, the moving image or the still image stored in the flash memory 290 may be decompressed by the image processor 321 and displayed on the display unit 270 through the image output unit 323.

The mobile communication terminal according to an additional aspect of the present invention further includes a flash memory 290 for storing data processed by the signal processor, and the signal processor 300 further includes a memory controller 331 for controlling the flash memory. . In one embodiment, the flash memory may be a card type removable memory. The memory controller 331 is a configuration known as a flash memory controller that controls write and read operations to and from the flash memory 290. The flash memory 290 is interfaced to the signal processor 300 chip by the memory interface 333. In one embodiment, the memory interface 333 supports a detachable operation of the flash memory 290 provided as a removable card type. In one embodiment, flash memory 290 may be a SIMM card.

Hereinafter, a control configuration of the camera unit 500 and the TV receiver 700 of the signal processor 300 serving as a host in media signal processing will be described in detail.

According to a characteristic aspect of the present invention, the camera unit 500 includes a chip select unit 571 that receives a chip select signal from an external chip controller 351 of the signal processor 300, and a serial bus from the signal processor 300. A bus interface unit 573 for receiving a control signal and a camera controller 550 for controlling the operation of the entire camera unit according to control signals received from the chip selector 571 and the bus interface unit 573 are included.

According to a characteristic aspect of the present invention, the TV receiver 700 includes a chip selector 771 that receives a chip select signal of an external chip controller 351 of the signal processor 300, and a serial bus from the signal processor 300. A bus interface unit 773 for receiving a control signal, and a TV control unit 750 for controlling an operation according to control signals received from the chip selector 771 and the bus interface unit 773.

According to a characteristic aspect of the present invention, the signal processor includes a media interface unit 355 that alternatively receives the first image signal from the camera unit 500 or the second image signal from the TV receiver 700, and the camera unit. An external chip control unit 351 for selectively selecting the 500 and the TV receiver 700, a bus interface unit 353 for controlling the operations of the camera 500 and the TV receiver 700, and an external chip controller 351 and a control unit 310 for controlling the external module through the bus interface 353.

At this time, according to an additional aspect, the control unit 310 of the signal processor 300 may separately access the tuner unit 710 and the decoder unit 730 of the TV receiver 700 by assigning a plurality of addresses to the bus interface unit 353. To control.

In an embodiment, the external chip control unit 351 and the chip selectors 571 and 771 operate by chip select logic. The external chip controller 351 may alternatively select the camera 500 or the TV receiver 700. Each chip select unit 571, 771 detects this signal and prepares each control unit 550 for operation.

Once one module is selected by the external chip control unit 351, the control unit 310 of the signal processing unit 300 sets the operating environment of these modules via the bus interface unit 353 or the bus interface unit 353 even during operation. ) To control the operation of each module. In one embodiment, the communication interface of the bus interface portions 353, 573, 773 is an I ² C bus. In one embodiment, one address is assigned to each of the camera operation 500, the brightness control operation, the resolution, and the like. The TV receiver 700 assigns one address to each of channel selection, audio output level, and decoder operation. Can be assigned. The controller 310 may control an operation of recording a camera, adjusting the brightness of the camera, or setting a resolution of the captured image by recording a control command at these addresses through the bus interface 353. have. In addition, the controller 310 may control an operation of changing a TV channel, adjusting a volume, or changing the format of an output image by recording control commands at these addresses through the bus interface 353.

The video signal output from the camera unit 500 through the converter 530 and the video signal output from the decoder 730 of the TV receiver 700 by the control are signals of the same 8-bit YUV format. Input from the media interface unit 355 of the 300 may be processed by the same image processing unit 321 or the image output unit 323.

As described in detail above, the terminal according to the present invention implements a TV receiving module in a detachable manner, so that the main body can be manufactured compactly, and a TV receiving circuit and a circuit for mobile communication are separated and shielded on a case, There is an effect that can prevent a decrease in reception rate.

Furthermore, since the terminal according to the present invention processes the image of the camera unit and the image of the TV receiver by a single signal processor, there is an effect of reducing hardware and thus reducing manufacturing cost.

Furthermore, the terminal according to the present invention has a bus for controlling operation separately from the image processing path, and thus can control the complicated modules uniformly, so that the system design, the function addition, and the design change can be easily performed.

The present invention has been described above with reference to preferred embodiments, but is not limited thereto, and is interpreted by the appended claims, which are intended to cover many variations that will be apparent to those skilled in the art without departing from the scope of the present invention. Should be done.

Claims (24)

delete delete delete delete delete delete delete delete delete delete delete delete A keypad; A display unit for displaying a menu and an operation state; In the mobile communication terminal comprising: a phone control unit including a system control unit for controlling the entire system according to the operation signal or the operation state input from the keypad A camera unit converting an optical signal input from the lens system into an electrical signal and outputting the electrical signal; A TV receiver detachably coupled to the main body and configured to extract and output a video signal from a TV signal received through airwaves; And a signal processor configured to selectively process one of a first video signal and a second video signal output from the camera unit and the TV receiver in a common format and output the same to the display unit. The mobile communication terminal of claim 13, wherein the signal processor comprises an external chip controller for selectively selecting the camera unit and the TV receiver. The mobile communication terminal of claim 13, wherein the signal processor controls an operation of the camera unit and the TV receiver by using a serial bus. 16. The mobile terminal of claim 15, wherein the serial bus is an I ² C bus. 17. The mobile communication terminal according to any one of claims 13 to 16, wherein the TV receiver supports one of NTSC, PAL, or both. The mobile communication terminal according to any one of claims 13 to 16, wherein the TV receiver is a DMB system. The method of claim 15, wherein the TV receiving unit: A tuner unit for demodulating a radio broadcast signal received from an antenna, a decoder unit for decoding the demodulated broadcast signal and outputting the digital data, a bus interface unit for receiving a serial bus control signal from the signal processing unit, and the bus interface And a TV control unit controlling an operation according to a control signal received from the unit. The method of claim 15, wherein the camera unit: A lens system, an imaging unit for converting an optical signal from the lens system into an analog electric signal, a converter for processing a signal output from the imaging unit, converting it into a digital format, and converting it into a format suitable for input of the signal processing unit; And a bus controller for receiving a serial bus control signal from the signal processor and a camera controller for controlling an operation according to a control signal received from the bus interface. The method of claim 15, wherein the signal processing unit: A media interface for selectively receiving the first video signal or the second video signal, an image processing unit for compressing or signal processing the Youngshin signal input from the media interface unit, and a video signal processed by the image processing unit A video output unit for converting and outputting data, a bus interface unit for controlling operations of the camera unit and the TV receiving unit, an external module to be controlled through the bus interface unit, and controlling the overall operation of the signal processing unit Mobile communication terminal comprising a. The method of claim 21, The terminal further comprises a flash memory for storing the data processed by the signal processor, The signal processor further comprises a memory controller for controlling the flash memory. The mobile communication terminal of claim 22, wherein the flash memory is a card type removable memory. The mobile communication terminal of claim 21, wherein the control unit of the signal processor controls the bus interface unit to individually access the tuner unit and the decoder unit of the TV receiver by a plurality of address assignments.

Images