KR19980031911A - Apparatus and method for dynamically changing fax data visible area of personal portable information terminal - Google Patents

Abstract

The present invention relates to an apparatus and method for dynamically changing fax data visible area of a personal portable information terminal. The apparatus performs initialization and makes a ring signal detectable fax reception standby state, and establishes a fax connection with the sender of a fax. Fax connection setting unit for setting the transmission environment for; A fax data receiver for receiving fax data; A bitmap image converter for reading data stored in a reception buffer of the fax data receiver and converting the data into bitmap image data; A pen input processor configured to process a pen input and output a transfer command and position information; A visible region controller configured to change a visible region start position of the display apparatus by analyzing a transfer command and position information; A bitmap image output unit configured to read data stored in a buffer of the bitmap image converter corresponding to the start position of the visible region of the visible region controller and output the read data to the display screen; And a fax connection canceling unit for releasing a fax connection if there is no data reception to the fax data receiving unit.

According to the present invention, it is difficult to show all the information of the received fax data at the same time in a memory-constrained environment or when the received fax data is biased to one side, it is possible to properly view all the data by changing the visible area. .

Description

Apparatus and method for dynamically changing fax data visible area of personal portable information terminal

The present invention relates to a personal portable terminal, and more particularly, to an apparatus and method for dynamically changing a fax data visible area of a personal portable information terminal.

In today's world, as society becomes more complex and diversified, the needs of users for information and communication services are also diversifying. With the development of information and communication technology, these needs are being met. One of them is a personal digital assistant (PDA), which has a mobile phone function, a portable computer function, a fax function, and an electronic notebook function. Such PDAs are called personal handheld terminals by providing multimedia and personalization of services currently pursued by information and communication services. In other words, the PDA uses a pen or voice instead of the existing keyboard input, provides a graphical user interface (GUI) environment, and has the computer functions of the notebook computer and the external communication function so that the user can access a small and portable terminal. To provide. Unlike the user access method of the existing terminal, the PDA can be characterized as being actively involved in the user's use. That is, the user can directly write letters and receive PDA input using the handwritten character recognition function using a pen attached to the terminal.

In particular, the most important function of the recent personal information terminal is the communication function. Internet access, access to information carriers such as Unitel using public telecommunications networks (PSTN networks), and fax transmission and reception.

In general, reception of a fax in a personal portable information terminal is performed in the following order. First, the fax modem is initialized and the receiver is waiting for receiving fax data from the other party. Then, when the fax reception starts, set the transmission path with the remote fax machine, that is, the transmission speed and other option settings. Pass data is then received, where the received data is Modified Huffman (MH) Encoding Image Data. When the fax data is received, the fax data conversion module converts the received MH Encoding Data into a general bitmap image, stores the converted MH Encoding Data, and then ends receiving the fax data. Finally, fax reception data is processed and output.

In this case, the conventional method of receiving a fax in a personal portable information terminal generally receives and stores fax data in a memory and displays it on a screen according to a user's request when all receiving operations are completed. However, most personal digital assistants have a limited amount of data to receive faxes because it is difficult to mount enough memory to store fax data (to reduce product size and manufacturing cost burden). If you have a lot of memory built in to receive multiple faxes, this can be a cost burden.

In order to solve such a problem, a method of minimizing the use of memory may be used by spraying the screen immediately after every 16 lines without storing all the received fax data and deleting the received data. However, this still remains a problem when the fax reception data is displayed on the screen, the size of the screen is too small to show all the images actually received. A typical LCD screen is 320 x 240 or 480 x 320. A4 paper faxes have 1,728 pixels horizontally. Therefore, the current LCD screen can only display an image of 320 or 480 pixels from the left. So now we have no choice but to tell you to write a fax in the visible area on the left before sending it. And this is really useful. This method is very effective, but if the incoming data is full on A4 paper, some of it will not be visible.

The present invention was created to solve the above-described problems, and in order to overcome the limitation of the viewing area due to the size of the screen, the pen is received in a situation in which the fax data is received and output on the screen in real time. It is an object of the present invention to provide an apparatus and method for dynamically changing a fax data visible area of a personal portable information terminal that can change the visible area displayed on a screen.

1 is a block diagram showing the configuration of a fax data reduction display apparatus in a personal portable information terminal according to the present invention.

2 illustrates a configuration of a screen of the liquid crystal display device.

3 is a block diagram illustrating a detailed configuration of the visible region controller.

4 is a flowchart illustrating the overall operation of the apparatus for dynamically changing the fax data visible area in the personal portable information terminal according to the present invention.

5 is a flowchart illustrating operations of the pen input processor and the visible area controller.

According to the present invention for achieving the above object, there is provided a display apparatus for displaying text and graphic data, a fax modem for transmitting and receiving fax data, and a storage device for storing data. The apparatus for dynamically changing the visible area performs a predetermined initialization operation for receiving a fax, makes the personal portable information terminal into a fax reception standby state capable of detecting a ring signal of the other party, and sends a fax. A fax connection setting unit for setting a transmission environment for receiving a fax connection and preparing a reception; A fax data receiving unit for receiving fax data from the other party and having a receiving buffer for storing the received data; A bitmap image converting unit reading data stored in a receiving buffer of the fax data receiving unit and converting the data into bitmap image data, and having a conversion buffer for storing the converted data; A pen input processing unit which processes a pen input and outputs a transfer command and position information; A visible region controller configured to change a start position of the visible region of the display apparatus by analyzing a transfer command and position information of the pen input processor; A bitmap image output unit configured to read data stored in a buffer of the bitmap image converter corresponding to the start position of the visible region of the visible region controller and output the read data to the display screen; And a fax connection canceling unit for canceling a fax connection if there is no data reception to the fax data receiving unit.

The screen of the display device includes a left arrow button which is a graphic command interface for displaying the left content of the fax being displayed on the screen of the display device; A right arrow button which is a graphic command interface for displaying the right content of the fax being displayed on the screen of the display device; And an indicator for displaying the left and right positions of the fax contents displayed on the screen of the display apparatus.

The visible area controller may include: a position checker that checks whether the position information of the pen input processor is in a position of a left or right arrow button; And when the left arrow button is pressed, moves the visible region starting position to the left by a predetermined size, and when the right arrow button is pressed, moves the visible region starting position to the right by the predetermined size, and moves to the moved position. And a visible area mover for correspondingly moving the position of the indicator.

In accordance with the present invention, a display apparatus for displaying text and graphic data, a fax modem for transmitting / receiving fax data, and a storage apparatus for storing data, the visible area of the display apparatus in the personal portable information terminal. The method for dynamically changing the method may include: performing a predetermined initialization operation for receiving a fax; Making the personal portable information terminal in a fax reception standby state waiting for a ring signal of the other party; Preparing a fax connection with the party sending the fax; A receiving step of receiving fax data from a counterpart and storing the received data; A conversion step of reading the stored received data, converting the stored received data into bitmap image data, and storing the converted data; A pen input processing step of processing a pen input and outputting a transfer command and position information; A start position changing step of changing the start position of the visible region of the display apparatus by analyzing the transfer command and the position information output in the pen input processing step; A display step of reading data stored in a buffer of the bitmap image converter corresponding to the start position of the visible region of the visible region controller and outputting the data stored on the display screen; And if there is no data reception in the receiving step, releasing a fax connection.

And a left arrow button which is a graphic command interface for displaying the left side of the fax being displayed on the screen of the display device, and a graphic for displaying the right side of the fax being displayed on the screen of the display device. When the right arrow button, which is a command interface, and an indicator for displaying the left and right positions of the contents of the fax being displayed on the screen of the display device, the start position changing step includes the left and right position information of the pen input processing step. Checking whether it is within the position of the arrow button; Moving the visible region start position to the left by a predetermined size when the left arrow button is pressed, and moving the visible region starting position to the right by a predetermined size when the right arrow button is pressed; And moving the position of the indicator to correspond to the moved position.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. 1 is a block diagram showing the configuration of a dynamic data changing device for fax data visible area in a personal portable information terminal according to the present invention, wherein the personal portable information terminal displays a character and graphic data; A fax modem 110 for transmitting and receiving data, a storage device 100 for storing data, and a processing device 120 for dynamically changing a visible area for displaying fax data in the personal portable information terminal.

2 shows the configuration of the screen of the liquid crystal display device 130, the fax screen 200 for displaying the contents of the fax, the left arrow button 210, the right arrow button 230 and the indicator which are graphic command interfaces. 220. The left arrow button is a graphical command interface for displaying the contents on the left side of the fax being displayed on the screen of the liquid crystal display device, and the right arrow button is the contents on the right side of the fax being displayed on the screen of the display device. Graphical command interface to display. In addition, the indicator 220 displays the left and right positions of the fax content currently displayed on the screen of the display device, and moves to the left or right whenever the left arrow button 210 or the right arrow button 230 is pressed once. Move to step 16.

Meanwhile, the processing apparatus 120 includes a fax connection setting unit 121, a fax connection disconnecting unit 122, a fax data receiving unit 123, a bitmap image converter 124, a bitmap image output unit 125, and a visible area. The control unit 126 and the pen input processing unit 127.

The fax connection setting unit 121 performs a predetermined initialization operation for receiving a fax, makes the personal portable information terminal a fax reception standby state capable of detecting a ring signal of the other party, and transmits a fax. It prepares the reception such as setting the transmission environment for the fax connection with the other party. The fax data receiving unit 123 receives fax data from the other party, and includes a flag indicating a reception state of the fax data and a receiving buffer for storing the received data. For example, if the flag is set to 1, it indicates that fax data is currently received. If the flag is set to 0, it means that there is no received fax data.

The bitmap image converter 124 reads data stored in the reception buffer of the fax data receiver 123 and converts the data into bitmap image data. When the flag indicates reception of fax data, the bitmap image converter 124 reads the data stored in the reception buffer of the fax data receiver. And a conversion buffer for reading the stored data and storing the converted data.

The pen input processor 127 processes the pen input and outputs a transfer command and position information. The visible region controller 126 analyzes the transfer command and position information of the pen input processor 127 to change the visible region start position (start_pos) of the display apparatus 130, and as shown in FIG. When the position checker 300 that checks whether the position information of the pen input processing unit 127 is within the positions of the left and right arrow buttons and the left arrow button is pressed, the start position of the visible area is moved to the left by a predetermined size and the right side is moved. When the arrow button is pressed, the visible region mover 310 moves the visible region starting position to the right by a predetermined size and moves the position of the indicator 220 to correspond to the moved position.

The bitmap image output unit 125 reads data stored in a buffer of the bitmap image converter 124 corresponding to the start position of the visible region of the visible region controller 126 to display the screen of the display device 130. Output to If the flag indicates that there is no received fax data, the fax disconnection unit 122 releases the fax connection of the fax modem 110.

4 is a flowchart showing the overall operation of the apparatus for dynamically changing the fax data visible area in the personal portable information terminal according to the present invention, and FIG. 5 shows the operations of the pen input processor 127 and the visible area controller 126. As a flowchart, the operation of the present invention will be described with reference to FIGS. 4 and 5 as follows.

First, when the fax reception is started, the initialization of the fax modem 110 is performed through the fax initialization routine (step 400). The initialization of the fax is performed by performing a modem initialization command and initializing buffers, flags, and the like. Say. After the fax initialization is performed, the process proceeds to the reception waiting step for waiting for a call of the remote fax transmitter. (Step 410) The reception waiting is set to a state where the modem can automatically detect a ring signal. When the modem detects the ring signal, the modem automatically answers the call and attempts to connect with the other party's fax machine. When the connection is completed, the process proceeds to the next step. If the ring signal is not detected for a predetermined waiting time, the connection is released.

On the other hand, after the ring signal can be detected, when a call is received and the modem receives a call, that is, when the ring signal is detected (step 420), the process proceeds to the preparation for receiving the fax data (step 430). In the reception preparation step 430, various information necessary for transmitting and receiving a fax, that is, information exchange with a remote fax system, whether to support transmission speed, image size, high resolution support, processing speed (scanning time), error correction function, etc. Send and receive and set the proper transmission environment. When the sender sends a series of connection test data for 1.5 seconds from the sending side to the receiving side, the receiving side checks whether the data arrived well and sends a confirmation signal to the transmitting side.

After the fax is ready to receive, the data is received through the fax data receiving unit 123 (step 440). If the reception of the data is terminated (step 450), if the reception is not finished, a certain amount of data is received. After receiving the fax data (in this case, 16 lines) and storing the received data in the receiving buffer of the fax data receiving unit 123, the bitmap image converting unit 124 converts the received data (FaxMHdata) into bitmap image data. Store in the conversion buffer (step 460).

In order to set the visible region, the basic visible region is first set to 0 to 480, and the visible region start position (start_pos) is initialized (step 500). Here, start_pos = 0. Then, while the fax data is received through the fax data receiving unit 123, the pen input processing unit 127 continuously checks the input of the pen, and if the pen is input, the pen input is processed to transmit the command and position information (x, y). Then, the position information of the pen input processing unit 127 enters the position of the left arrow button 210 or the right arrow button 230 through the position checker 300 of the visible area controller. If the left arrow button is pressed, the visible area mover 310 moves the visible area start position to the left by a predetermined size, and if the right arrow button is pressed, the visible area. The start position is moved to the right by a predetermined size, and the moved new visible region start position (new_pos-start_pos) is output (step 530). The indicator corresponds to the moved position. In step 550, if the reception of the fax has not been completed, step 510 is repeated. If the reception of the fax is completed, the change of the visible area is terminated.

That is, when the pen input processing unit 127 sends the command PEN_DOWN and the position information (x, y), it is checked whether the corresponding position is within the positions of the left and right arrow buttons, and the left arrow button 210 is pressed. Start_pos is decreased by 10, and is increased by 10 when the right arrow button 230 is pressed. In any case, however, the range of start_pos is kept from 0 to 150. If the width of the LCD is 480 pixels, the size of one line of data is 60 bytes (1 byte stores 8 bits of information and 1 bit of 1 pixel of information). Maximum 216 bytes. Therefore, 216-60 = 156 and change it to 10 units so set it to 150. This position is the rightmost of the fax image. In addition, when the left arrow button 210 or the right arrow button 230 is pressed, the position of the indicator 220 indicating where the currently displayed area is changed is changed.

On the other hand, when the conversion is completed (step 460), the bitmap image output unit 125 is stored in the buffer of the bitmap image conversion unit corresponding to a new visible region start position output through the visible region control unit 126. Data is read and output to the display screen (step 470). In other words, data stored in the buffer of the bitmap image converter 124 is the first line from FaxImage [0] to FaxImage [215], and the second line 216 bytes are stored in order from FaxImage [216] to FaxImage [431]. Therefore, the size of the buffer of the bitmap image converter 124 is 216 * 16 bytes. If start_pos is 0, it prints the width lingth of the visible area from FaxImage [0], and can repeat this operation until it reaches 16 lines. However, if the start_pos value is changed to 10 by the visible region controller 126, the first line outputs the length of the visible region from FaxImage [10], and the second to 16 lines are each 10 by the data storage position of the line. You can print out the data corresponding to the location plus the screen.

Repeat steps 440 to 470 until the end of the fax reception, and when the reception of the fax is finished, releases the fax connection to complete the reception of the fax.

According to the present invention, when the size of the screen is difficult to show all the information of the received fax data at the same time in the device that wants to temporarily receive the fax data due to lack of memory, or when the received fax data is skewed to one side Changing the area will allow you to see all the data properly.

Claims (5)

A personal portable information terminal device comprising a display device for displaying text and graphic data, a fax modem for sending and receiving fax data, and a storage device for storing data. Performs a predetermined initialization operation for receiving a fax, sets the personal portable information terminal to be in a fax reception standby state capable of detecting a ring signal of the other party, and sets a transmission environment for a fax connection with the sender of the fax. And fax connection setting unit for preparing to receive; A fax data receiving unit for receiving fax data from the other party and having a receiving buffer for storing the received data; A bitmap image converting unit reading data stored in a receiving buffer of the fax data receiving unit and converting the data into bitmap image data, and having a conversion buffer for storing the converted data; A pen input processing unit which processes a pen input and outputs a transfer command and position information; A visible region controller configured to change a start position of the visible region of the display apparatus by analyzing a transfer command and position information of the pen input processor; A bitmap image output unit configured to read data stored in a buffer of the bitmap image converter corresponding to the start position of the visible region of the visible region controller and output the read data to the display screen; And And a fax connection canceling unit for releasing a fax connection if there is no data received by the fax data receiving unit. The method of claim 1, The screen of the display device A left arrow button which is a graphic command interface for displaying the left content of the fax being displayed on the screen of the display device; A right arrow button which is a graphic command interface for displaying the right content of the fax being displayed on the screen of the display device; And It further includes an indicator for displaying the left and right position of the fax content displayed on the screen of the display device, The visible area control unit A position checker that checks whether the position information of the pen input processing unit falls within the positions of the left and right arrow buttons; And If the left arrow button is pressed, the visible area start position is moved to the left by a predetermined size; if the right arrow button is pressed, the visible area start position is moved to the right by a predetermined size, and corresponds to the moved position. And a visible area mover for moving the position of the indicator. The method of claim 2, The visible area moving unit that is moved each time the left arrow button and the right arrow button is pressed is 10 bytes, The position of the indicator A device for dynamically changing the fax data visible area of a personal portable information terminal, characterized by moving to step 16. Claims [1] A method for dynamically changing a visible area of a display device in a personal portable information terminal including a display device for displaying text and graphic data, a fax modem for transmitting and receiving fax data, and a memory device for storing data. Performing a predetermined initialization operation for receiving a fax; Making the personal portable information terminal in a fax reception standby state waiting for a ring signal of the other party; Preparing a fax connection with the party sending the fax; A receiving step of receiving fax data from a counterpart and storing the received data; A conversion step of reading the stored received data, converting the stored received data into bitmap image data, and storing the converted data; A pen input processing step of processing a pen input and outputting a transfer command and position information; A start position changing step of changing the start position of the visible region of the display apparatus by analyzing the transfer command and the position information output in the pen input processing step; A display step of reading data stored in a buffer of the bitmap image converter corresponding to the start position of the visible region of the visible region controller and outputting the data stored on the display screen; And And if there is no data reception in the receiving step, releasing a facsimile connection. 5. The left arrow button according to claim 4, wherein the screen of the display device is a graphic command interface for displaying the left content of the fax being displayed on the screen of the display device, and the right content of the fax being displayed on the screen of the display device. And a right arrow button which is a graphic command interface for displaying a display and an indicator indicating the left and right positions of the contents of the fax being displayed on the screen of the display device. The starting position changing step Checking whether the position information of the pen input processing step falls within the positions of the left and right arrow buttons; Moving the visible region start position to the left by a predetermined size when the left arrow button is pressed, and moving the visible region starting position to the right by a predetermined size when the right arrow button is pressed; And And moving the position of the indicator to correspond to the moved position.