KR200253003Y1 - PDA with a built-in secondary memory unit in the type of optical disc - Google Patents

Abstract

The present invention relates to data storage in personal digital assistants (PDAs) that manage personal information and are easy to carry.

In order to improve the risk of loss of stored data due to volatility which is a characteristic of PDA storage due to insufficient capacity of the storage unit storing data in processing various data which is a basic function of personal portable terminal.

A main memory unit comprising ROM and RAM and storing various data, an input unit for inputting data and control commands, an output unit for outputting data, PORTs for connecting to external devices, a power supply unit for supplying power, and In a personal digital assistant (PDA) having a control unit for controlling each part,

An auxiliary storage device for storing data on an optical disk; Control unit provided with a control function for the auxiliary storage device, which controls the data input and output between the auxiliary storage device and each part of the existing personal portable terminal in response to the operation signal when an operation signal for the auxiliary storage device is input from an input unit. By providing

Through the auxiliary memory device that stores data on the optical disk, the storage capacity of the personal portable terminal can be reinforced to implement various functions that have been constrained by the lack of capacity until now. It has the effect of eliminating the risk of data loss.

Description

PDA with a built-in secondary memory unit in the type of optical disc}

The present invention relates to personal digital assistants (PDAs), and more specifically, to a personal storage device for managing personal information and to store data by storing a built-in auxiliary memory device for storing data on an optical disk. The present invention relates to a personal digital assistant having improved functionality.

In general, when taking notes of an individual's schedule and phone number, the pen is written in a notebook using a pen. In particular, the development of electronic technology allows a user to input a simple memo and phone number and print it on the screen when necessary. Handbooks are widely used.

In addition, the spread of personal digital assistants (hereinafter referred to as 'PDA') having a communication function together with the function of the electronic notebook is gradually expanding.

However, this PDA is a much smaller computer than a conventional notebook and is much more powerful than an electronic notebook. Because of its small size, the size of the display (LCD) device is limited, and it is based on pen input, which allows characters to be recognized by writing with a pen.

These PDAs basically provide personal information management programs such as address book and notepad, and can exchange data freely through connection with computer (PC), and install and use new programs that users need in addition to the programs provided basically. Can be.

The basic fields of application of the PDA are as follows.

Although a lot of information that is kept in daily life of each individual, such as businessmen or students who are required to manage schedules and accounts, is recorded in diaries, general notebooks or electronic notebooks, the basic programs and additional programs provided in PDA Using them can improve the inefficient part of personal information management.

Currently, PDAs can't implement full-featured word processors, but they can fully implement basic word processor functions such as changing the character type, changing the size, and changing the alignment. If you need to take notes while drawing, this is possible on a PDA. Just like drawing, you can write on a PDA or draw a picture like a map. In addition, if you do not have time to write directly, you can use the voice recording function included in the PDA to record words. If you have enough memory, you can record your voice on your PDA for quite some time.

In addition, personal information management programs for PCs that correspond to personal information management programs of PDAs are also provided to PCs to support modification, addition, and backup of input information by connecting PDAs and PCs, enabling new levels of personal information management. . In addition, PDAs are being used for various purposes such as sales management automation, transportation and inventory management, convenience facilities, public safety, and financial services.

The PDA also supports wired Internet using LAN cards or modems.

By attaching a CF (Compact Flash) type LAN card and modem to a PDA with a CF slot, you can enjoy the Internet wherever there is a telephone or network connection.

Another feature of the recent PDA is wireless Internet access, which can perform various functions on a single device by performing various data processing, which is a basic function, and allowing users to enjoy voice or video calls with a built-in mobile phone function. have.

And PDAs come with one or more simple games that you can install by default. In addition to the games provided by default, several games exist on the Internet. In addition to commercially available software, there are many freeware games available, including a variety of free games, including minesweeper puzzle games, StarCraft-like strategy simulations, and RPGs.

However, the existing PDA has a weak point that enough storage space can be put into many games.

The easiest multimedia feature to implement in a PDA is the e-book. You can buy e-books, download them for free, or create your own. If you create your own, you can use a software called ReaderWorks, which is available for free to the public.

If a book is produced as an e-book, it will be about 100-150KB. Even if you put 10 long novels, it won't be 2MB. Palm-OS-based PDAs have a relatively disadvantageous memory expansion, making it difficult to accommodate large amounts of e-books, but Pocket PC-based PDAs are more advantageous in this regard.

PDAs can be great MP3 players too. The current portable MP3 player has a limit of approximately 128MB of playback space. PDAs also have limitations on the current storage space, but when used as an MP3 player, 10 to 20 songs can be played. Also, some PDAs released today (such as Casio's EM-500 or Sony's Clie) work as complete MP3 players with remote control capabilities.

In addition, Poocket PC-based PDAs include these features along with the ability to play movies. By installing Windows Media Player 7.1 for PocketPC, a free download from Microsoft, you can play two video formats: ASF and WMV. This is a file format supported by general PCs, so it only encodes the video once to fit the size of Pocket PC. If you have a PDA with a high-speed CPU, such as Compaq's iPaq, and want to watch a movie anytime, anywhere, you can watch it anytime by putting it in a large amount of CF memory or auxiliary media like IBM's MicroDrive.

In addition to ASF and AVI, MPEG-1 video such as MPG can be played.

A program called Pocket TV can also play MPEG-1 video. The downside is that it's a little hard to store this large file on a Pocket PC-based PDA.

PDAs also have a feature called GPS or GIS. GPS stands for Global Positioning System. It is a system that checks its position by using satellites that orbit around the earth. There is also a GIS, which stands for Geographic Information System, which analyzes the data and notifies it so that it can go exactly where it is intended. This also uses satellites.

There are many types of GPS / GIS systems for PDAs, but in the case of Poocket PC-based PDAs, two or three domestic companies have released such systems commercially. If you buy a GPS device for around 300,000 won and install it in the CF slot of your PDA, your PDA will quickly become GPS / GIS. So far, models released in Korea have been developed for automobiles and are relatively large in size, but currently models from Japan and others are small enough to be mounted on a PDA.

You can also watch TV on your PDA. If the PDA can be equipped with a TV card, the field of use of the PDA will be further expanded.

As introduced above, as the use of PDA increases, it is expected that a variety of software for various purposes will come out, but the limitations due to the lack of its own memory and storage memory are facing limitations in use. In other words, in order to perform various functions, the PDA must solve the problem of small storage capacity, which is a problem in the data storage device.

Another disadvantage of the existing PDA is the problem of solving the so-called volatile problem that the stored data is lost when the storage device is completely powered off.

Currently, PDAs store data in ROM and RAM, unlike PCs (Person Computers) that store data on hard disks. The operating system and the built-in programs are installed in the ROM, and the installed applications and data are stored in the RAM.

However, DRAM used as a memory erases all data when power supply is cut off. In order to prevent this, the PDA maintains the data while supplying very little current internally even when the user turns off the PDA. Therefore, be careful because the data is lost when the battery is completely exhausted. Of course, some products have a built-in battery for data protection in case of such a case, but this is for use while the battery is being replaced or charged, so it is always necessary to check the battery capacity.

Recently, micro drives developed by IBM are commercially available, and PDAs are also available. Micro Drive is a Compact Flash (CF) card sized hard disk drive, with two products available today, 340MB and 1GB. In addition, some products can be used to expand the memory by installing a CF memory card using an expansion slot, but there is a limit to use due to the high cost.

In addition, when applying a product including a hard disk to solve the problem of lack of storage memory, the weight, size and stability of the hard disk is pointed out as a weak point.

As described above, the following auxiliary memory device was devised to compensate for the problems caused by the lack of storage capacity in the existing PDA, but includes several things to be solved.

Conventional PDAs process data using only main memory, RAM and ROM.

However, with the diversification of PDA usage and the enlargement of software, a lot of storage space is needed. Accordingly, various devices are being developed by the necessity of the auxiliary memory device.

The auxiliary storage device of the PDA, which is a portable device, requires a lightweight, expandable, general purpose, and low cost device.

First, CF card, the most common auxiliary memory device in PDA, is a storage device using flash memory. It is the lightest, smallest and fastest of all storage devices, but memory cards are the most expensive in terms of price / efficiency. The same storage capacity is 10-15 times more expensive than a hard disk and 100 times more expensive than a CD-ROM.

Flash memory is an excellent semiconductor with only the advantages of RAM and ROM as a storage device using semiconductors such as RAM and ROM, but it is a very expensive product due to the difference in integration density with general DRAM. And a disadvantage that is easy to overlook is that data archiving is not permanent.

Next developed portable hard disk can have the largest storage capacity. However, it is heavy and difficult to further expand. Also, due to the characteristics of the magnetic recording device, it is difficult to ensure the reliability of the recording while moving.

The present invention is to solve the above problems in personal digital assistants (PDAs), the purpose of which is to improve the storage capacity of the personal portable terminal to a gigabyte at a low cost, even when the PDA power off This solution solves the volatility problem of the data by preserving the stored data, and provides a personal portable terminal that can simultaneously perform functions such as a CD player or an MP3 player.

1 is a block diagram of a personal portable terminal according to the present invention

Figure 2 is a perspective view of the use state of the personal portable terminal according to the present invention

Referring to the characteristic configuration of the present invention for achieving the above object is as follows.

The present invention is composed of a ROM and RAM, main memory unit 110 for storing a variety of data, the input unit 10 for inputting data and control commands, the output unit 20 for outputting data, connected to an external device In a personal digital assistant (PDA) having PORTs 30, a power supply unit 40 for supplying power, and a control unit 210 for controlling these parts,

An auxiliary memory device (120) for storing data on an optical disc; When an operation signal for the auxiliary storage device 120 is input from the input unit 10, the auxiliary storage device 120 and the respective parts 10, 20, 30, 40, 110, It is characterized by having a control unit 210 provided with a control function for the auxiliary memory device 120, which has a function of controlling data input and output between the 210 and 220.

When the present invention with such features described in detail with reference to the accompanying drawings.

1 is a block diagram of a personal portable terminal according to the present invention, Figure 2 is a perspective view of the use state of the personal portable terminal according to the present invention.

As described herein, the present invention consists of a ROM and a RAM and includes a main memory unit 110 for storing various data, an input unit 10 for inputting data and control commands, and an output unit 20 for outputting data. And a conventional PDA having PORTs 30 for connecting to an external device, a power supply unit 40 for supplying power, and a control unit 210 for controlling each of these parts,

An auxiliary memory device (120) for storing data on an optical disc; When an operation signal for instructing the input and output of data to and from the input unit 10 is inputted, each of the existing parts 10, 20, 30, 40, 110, 210, and 220 of the personal portable terminal and the data to the optical disk are generated. By controlling all of the auxiliary storage device 120 for storing the, the control unit 210 of the multi-function to enable to implement all the functions of the auxiliary storage device and each of the existing personal portable terminal.

Here, as the auxiliary storage device 120 for storing data on the optical disk, optical media such as CD, DVD, MD, and the like can be used, and these media have respective control characteristics.

In addition, since the personal storage device in which the auxiliary memory device 120 is to be installed has different operating systems (OS: OS) such as palmOS, CellVic OS, and Windows CE for each product, there are respective control characteristics. At this time, in accordance with the control characteristics of the built-in auxiliary memory device 120 and the characteristics of the control unit of the personal portable terminal that accommodates it, the control unit of the composite function to implement all the functions of the auxiliary storage device and each part of the existing personal portable terminal ( Making 210 is a technical level that can be realized by a person of ordinary skill in the art, so detailed description thereof will be omitted.

In addition, the auxiliary memory device 120 that stores data on an optical disk is a data storage device that generates or recognizes data by scanning laser light onto a material (eg, a dye) on the surface of a recording medium (eg, a disc). For example, CD player, DVD player, MD player, MP3 CDP, etc. are miniature devices with smaller size. For example, MP3 CDP accommodates both the advantages of MP3 player and CD player, and supports various media such as MP3 file playback and Audio-CD / CD-R / CD-RW.

Here, the characteristics and representative two types of disks will be described using CD, which is a representative optical disk which is generally used, as follows.

First, there is the most common compact disc recordable (CD-R). The user can record data only once. Once stored, the data cannot be erased. After the data is recorded, it becomes a read-only CD-ROM. Gold or turquoise organic pigments are applied to the recording surface, which is then irradiated with laser light to burn the pigments to record data. The data reading method reproduces data by shooting laser light on a surface and reading reflected light. It is also possible to play CD-Rs that store music using a PC using a CD player.

CD-R has become widespread due to the large program and the lower price of CD-ROM drives. CD-Rs can also hold video, specifically called Vidio-CD, and a single CD can hold up to 74 minutes of video data.

Second, there is compact disc rewritable (CD-RW), where users are on the rise these days. A CD that allows a user to record or erase any number of times, initially called CD-E, and has the same capacity as the CD-R. However, when using the CD-RW function, only about 550MB can be used. The principle of reading data is the same as that of general CD-Rs, but reflectance is 20% lower than that of CD-Rs. have. If you do not have such a CD device, you can install a multi-read software program.

CD is known as a representative optical disc, and there are 12cm / 650MB CD, 12cm / 700MB CD, 8cm / 185MB CD, and so on depending on the size and capacity. 2 times can be stored.

Other optical discs include DVDs and MDs, and although the capacities differ, the principle as optical discs is the same.

Other storage devices include magneto-optical disks (MO) and are limited to users because they are often used for special purposes.

As described above, the present invention has a limitation in accommodating computer functions, personal information management functions, communication functions, and various functions added to the personal portable terminal. In order to improve the risk of data loss due to the volatility problem, the optical disk auxiliary memory is built into the personal portable terminal.

First, you will have high capacity storage on the optical disc. You can use a variety of software and features that require a lot of storage on your personal mobile device.

Second, because data is stored on the optical disk, the data is preserved even when the personal mobile device is turned off

Third, since the optical disk is easy to carry and inexpensive, the storage capacity of the personal portable terminal can be infinitely extended by replacing the disk. Therefore, even a general personal portable terminal with a low basic memory capacity exhibits the performance of a high-performance personal portable terminal, thereby reducing the cost of the product.

Fourth, the built-in optical disk auxiliary storage device has the effect that the personal portable terminal performs the same function as the CD player or MP3 player at the same time.

Claims (3)

ROM and RAM, the main memory unit 110 for storing various data, the input unit 10 for inputting data and control commands, the output unit 20 for outputting data, and the PORTs (connecting with external devices) 30, a personal digital assistant (PDA) 100 having a power supply unit 40 for supplying power, and a control unit 210 for controlling each of these parts, An auxiliary memory device (120) for storing data on an optical disc; When an operation signal for the auxiliary memory device 120 is input from the input unit 10, the auxiliary memory device 120 and the respective personal portable terminals 10, 20, 30, 40, Built-in optical disk auxiliary storage device 120, characterized in that it has a control unit 210 is provided with a control function for the auxiliary storage device 120, the function of controlling the data input and output between 110, 210, 220 Personal mobile terminal. The personal digital assistant according to claim 1, wherein the auxiliary memory device (120) for storing data on the optical disc has only a read function for the stored data. 2. The personal portable terminal as claimed in claim 1, wherein the auxiliary memory device 120 for storing data on the optical disk has both read and write functions for the stored data.