KR100661585B1 - A method and apparatus of transferring data speed improve for mobile station - Google Patents

Abstract

An apparatus and a method for improving a photographing data speed of a mobile terminal are provided to considerably improve a data transmission rate and to process image with high resolution by processing data transmission within a unit time. A camera sensor(30) captures an image and receives it. A memory(38) stores and provides data. A CCP(Camera Control Processor)(32) automatically increases addresses to store image data received through the camera sensor(30) in the memory(38), and transmits the image data through a bus by hardware. When the image data is all transmitted, the CCP(32) transmits an interrupt signal to a controller(42). The bus transmits the data at a different time. The memory(38) includes a dual port RAM(34).

Description

A method and apparatus of transferring data speed improve for mobile station

1 is a schematic configuration diagram of a mobile communication terminal equipped with a conventional camera;

2 is a block diagram of an apparatus for improving photographing data speed of a mobile communication terminal according to the present invention.

3 is a flowchart illustrating a photographing data speed improvement of the mobile communication terminal according to the present invention.

<Description of Major Symbols in Drawing>

30: camera sensor 32: CCP (Camera Control Processor chip)

34: dual port memory 36: normal memory

38: main memory 40: flash memory

42: controller

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication terminal, and more particularly, to an apparatus and method for improving photographing data speed of a mobile communication terminal implementing a high resolution camera phone using DPRAM (Dual-Port RAM).

In general, the analog mobile phone system (AMPS) has led to the emergence of the mobile phone market by efficiently using limited frequency resources. Since then, the digital mobile phone has emerged in earnest to overcome the limitations of the analog system. Diffused. The evolution of the mobile phone service market is generally classified into first generation analog, second generation digital, and third generation IMT-2000.

After the second generation of providing voice and short message (SMS) mobile communication services, mobile service providers are now moving to third generation technology that can provide high-speed data services.

Third generation mobile communication technology is expected to develop greatly thanks to the combination of multimedia technology, voice recognition technology, mobile phone positioning technology, Bluetooth technology and the like.

Mobile communication terminals employ advanced features such as color displays, large memory, digital cameras, wireless Internet platforms, multiplexing, MP3 and VOD functions.

On the other hand, the camera module of the mobile communication terminal (camera module) allows a video and photographing so that the subject can be seen on the screen through a micro lens. There are two types of camera modules: Charge-Coupled Device (CCD) and Complementary Metal-Oxide Semiconductor (CMOS). The number of CCD-applied phones in CMOS is increasing rapidly due to image quality competition. There is also a camera module with high sensitivity, high resolution Mega Pixel, and Optical Zoom. A charge-coupled device (CCD) camera is one of digital cameras that converts an image into an electrical signal using a charge coupled device (CCD) and stores the digital data in a storage medium such as a flash memory.

A mobile communication terminal equipped with a conventional camera will be described with reference to the drawings.

1 is a schematic configuration diagram of a mobile communication terminal equipped with a conventional camera.

1 shows a camera sensor 20 for taking a picture and receiving a picture, and a camera control processor chip (CCP) 22 for providing an image by processing data received by the camera sensor 20 and controlling the operation of the entire mobile communication terminal. And a controller 24, a main memory 26 for storing the photographed data, a flash memory 28 for storing codes, and the like.

A mobile communication terminal equipped with a conventional camera captures a data bus or an address bus between a main memory 26 and a camera control processor chip 22. Data was transmitted and received under the control of the controller 24.

When the camera control processor chip (CCP) 22 accumulates a set amount of captured data, the CCP 22 generates an interrupt to the controller 24 and the controller 24 captures the captured data through an interrupt routine code. Is read from the memory in the CCP 22.

The controller 24 accesses the flash memory to execute a code in the flash memory, reads image data from the CCP 22, and transmits the image data to the main memory 26 to store the code.

In this case, when the main processor 24 accesses the main memory 22 or the ROM, the data bus or the address bus is shared and used to simultaneously record data. (camera data) could not be transferred.

Also, when data transfer occurs between the Camera Control Processor chip (CCP) 22 and the Main Memory 26, a bottleneck in the address bus / data bus is required because a code must be executed in the controller 24. Since a phenomenon occurs, there is a problem in that high resolution photographing data cannot be processed.

A mobile communication terminal equipped with a conventional camera occupies a data bus Bus commonly used to transfer data between the CCP 22 and the main memory 26.

In addition, since the controller 24 accesses the flash memory 28 to execute the code, and transmits the image data photographed from the CCP 22, the code is executed and the bus is executed. Since the transmission speed is slow due to the occupation, there is a problem that can not contain a high resolution image in a unit time.

In addition, there is a problem in that an overhead of time for reading and performing a code from the controller 24 occurs.

On the other hand, the user is required to process high-resolution shooting by using a mobile communication terminal equipped with a popular camera, so a countermeasure is required.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide an apparatus and a method for improving the photographing data speed of a mobile communication terminal capable of high resolution photographing using DPRAM (Dual-Port RAM).

The mobile communication terminal equipped with the camera of the present invention is equipped with a dual port RAM to eliminate a bus bottleneck, eliminate the load of the controller (Main CPU), the CCP and the main memory (Main Memory) It is an object of the present invention to provide an apparatus and method for improving the photographing data speed of a mobile communication terminal which enables high-speed data transmission between the terminals.

According to the present invention, when dual-port RAM (DPRAM) is used, data can be transferred between the main memory at any time regardless of the main CPU and the main CPU. It is an object of the present invention to provide an apparatus and method for improving the photographing data speed of a mobile communication terminal that can innovate and increase the data transmission speed since the data can be transmitted in hardware without code execution.

In addition, even when the processing speed or access speed of the controller (main CPU) and RAM of the present invention is slow, if only the RAM capacity is secured, the image can be transmitted at high speed regardless of the controller (main CPU) within a unit time. An object of the present invention is to provide an apparatus and method for improving photographing data speed of a mobile communication terminal.

It is an object of the present invention to provide an apparatus and method for improving a data rate of a photographing data of a mobile communication terminal capable of capturing a high resolution image since a data rate of a photographing data using a camera sensor processes data transmission within a unit time.

In accordance with one aspect of the present invention, an apparatus for improving a photographing data rate of a mobile communication terminal includes a camera sensor for photographing and receiving an image, a memory for storing and providing data, and image data received through a camera sensor. Automatically increase the address so that it can be stored in the hardware, and transmits the video data in the hardware via a bus, characterized in that it comprises a CCP for transmitting an interrupt signal to the controller to inform the controller when all the data transmitted.

In addition, the memory of the present invention is characterized by including a dual port RAM.

In addition, the present invention provides a method of improving the data rate of recording data of the mobile communication terminal, the first step of processing the image in the CCP when the image is taken by the camera sensor of the mobile terminal, and by transmitting the high-resolution image data processed by the CCP at high speed In step 2, the address is automatically increased to be stored in the memory and the image data is transmitted in hardware through a bus and stored in the memory. When all the image data is transferred to the memory, the CPP transmits an interrupt signal to the controller. Characterized by including three steps to inform.

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

FIG. 2 is a block diagram of an apparatus for improving a shooting data speed of a mobile communication terminal according to the present invention, and FIG.

2, a main memory 38 and a flash memory 40 including a camera sensor 30, a camera control processor chip 32 having an internal memory, a dual port memory 34, and a normal memory 36. And controller 42 are shown.

The main memory 38 refers to a memory accessible by being connected on the same bus as the controller 42.

The flash memory 40 is a memory for storing code or data, and the CCP 32 processes a data received by the camera sensor 30 to image and receive dual ports provided in the main memory 38. It is possible to store and process high-resolution photographing data at high speed by transmitting it to the memory 34, so that high-resolution images can be captured by the mobile communication terminal.

The CCP 32 transfers the high-resolution data captured by the camera sensor 30 to the dual port memory 34 provided in the main memory 38 without processing by the controller 42 as in the prior art. The processing speed is revolutionized.

The CCP 32 automatically increases the address so that the high resolution image data can be stored in the dual port memory 34 at the time of transmission, thereby copying (transmitting) the image data in hardware.

When all the image data is transmitted to the dual port memory 34, the CCP 32 transmits an interrupt signal to the controller 42 to inform the controller 42, as shown in FIG. 2.

In addition, since the bus (bus) connected to the CCP 32 of the present invention does not have to synchronize with the bus (bus) connected to the controller (Main CPU), it is possible to increase the transmission speed by taking the clock quickly.

In the case of a mobile terminal equipped with a conventional camera, since all chips are connected through a common bus, the controller is involved and code execution must be executed in the controller in order to transmit image data. The unit data can be stored in the clock.

However, the present invention can store unit data in one clock.

In addition, since the bus connected to the CCP 32 of the present invention does not have to synchronize with the bus connected to the controller (Main CPU), it is possible to increase the transmission speed by taking the clock faster.

The reason why the transmission speed should be increased is that when a video is captured using the camera sensor 30, an image of 15 to 30 frames per second is transmitted to the camera control processor chip (CCP) 32, so that one image is transferred to the camera. The time transmitted from the sensor 30 should be transferred to the CCP 32 within about 66ms to 33ms to process the data.

The CCP 32 may process the data received from the camera sensor 30 and store the data in the internal RAM. However, when the capacity of the internal RAM of the CCP 32 increases, the CCP 32 processes the received image data. It must be transferred directly to the main memory 38 so that a large image can be processed properly.

The present invention overcomes the capacity shortage of the internal RAM of the CCP 32 to transfer the image data to the main memory 38 as soon as possible, thereby capturing a high resolution image.

According to the present invention, when the image is taken by the camera sensor of the mobile communication terminal, the image processing is performed by the CCP, and the address is automatically transferred so that the high resolution image data processed by the camera control processor chip (CCP) can be transmitted at high speed and stored in the dual port memory. It also increases high speed image data in hardware through a bus having a synchronization different from that of the controller without increasing the processing of the controller.

3 is a flowchart illustrating a photographing data speed improvement of the mobile communication terminal according to the present invention.

When the image is captured and transmitted through the camera sensor 30 of the mobile communication terminal, the image processing is performed by a camera control processor chip (CCP) 32 (S90).

The CCP 32 automatically increases the address of the dual port memory 34 so that the processed high resolution image data can be transmitted at high speed and stored in the dual port memory 34, and the image is transmitted through the data bus. The data is transmitted in hardware and stored at high speed (S92).

When all the image data is transmitted to the dual port memory 34, the CCP 32 transmits an interrupt signal to the controller 42 to inform the controller 42, as shown in FIG. 2.

In the above, the data bus BUS can be synchronized with the bus of the controller, and the clock speed can be adjusted quickly to significantly increase the data transmission speed.

As mentioned, according to the present invention, when the dual-port RAM (DPRAM) is used, data can be transferred between the controllers (main memory) at any time regardless of the controller (main CPU) through its bus. Data transfer can occur in hardware without code execution of the controller (main CPU), which can revolutionize data transfer speeds.

So far, the configuration and operation of the present invention have been described in detail. The present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the technical idea of the present invention.

The apparatus and method for improving the photographing data speed of the mobile communication terminal described in the present invention can be applied to a broadcast receiving terminal such as a synchronous CDMA terminal, an asynchronous WCDMA, a UMTS terminal, a PDA terminal, or a DMB.

As described above, the present invention includes a dual port RAM in a mobile communication terminal equipped with a camera, thereby eliminating a bus bottleneck when storing photographing data, and photographing without processing by a controller (Main CPU). Since data can be transferred and stored at high speed between the CCP and the main memory, high resolution images can be captured.

According to the present invention, the image data is transmitted and stored in hardware at any time regardless of the controller (main CPU), thereby significantly increasing the data transfer rate and storage, and the transfer rate of the photographed data is unit time. Because it handles the transfer of data inside, it has the effect of processing high resolution images.

Claims (5)

A camera sensor that takes images and receives them, A memory for storing and providing data; Automatically increase the address so that the image data received through the camera sensor can be stored in the memory, transmit the image data in hardware via a bus, and send an interrupt signal to the controller when all the image data has been transmitted. Device for improving the shooting data speed of the mobile communication terminal, characterized in that it comprises a CCP. The method of claim 1, And the bus transmits data at a different synchronization from that of the controller. The method of claim 1, The memory device of claim 1, wherein the memory comprises a dual port RAM. Step 1 if the image is taken by the camera sensor of the mobile communication terminal image processing; Automatically increasing the address so that the high resolution image data processed by the CCP can be stored at high speed and stored in the memory; and transmitting the image data in hardware via a bus and storing the image data in the memory; And transmitting the interrupt signal to the controller when the image data has been transmitted to the memory. 3. The method of claim 4, wherein The bus may have an independent synchronization with the bus of the controller and adjust the clock speed to improve the data transmission speed.

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