DE19616531A1 - Data compression memory storage process for data processing - Google Patents

Abstract

The processing method involves providing for the compression of the data bytes to be transmitted to a memory within a data processing system. The compression process is based upon a logic conversion routine. If a two part data word is to be entered, via the keyboard, then the internal coding process would assign shortened codes in the form of two digit numbers. These shortened codes would be transmitted and stored on the disc. A read out of the data involves a decoding process.

Description

Method, method and device for compressing data bytes for EDP systems, by means of a word or sentence memory. And to convert it into a shortened bit combination.

• 1.1 Description of the technical field to which the invention belongs.
  The device, method and method belong to the field of EDP systems and the storage or transmission of data information.
• 2.2 To the best of my knowledge, compressions are currently only on other logical Bases, solved by algorithms.
• 2.3 The technical problem is that a lot of space is often wasted on data carriers because many words or sentences of texts, in whole or in part, are often repeated. Since each individual letter consists of a character code (bit), e.g. B. ASC2 code 256 characters, are composed of many combinations per letter for unambiguous recognition necessary. These must be saved on a data carrier, or on a Remote data transmission can be sent and received.

This increases access times, especially for mechanical storage media. The storage medium requires corresponding storage capacities.

In the case of remote data transmission, the cost of the transmission increases with the time it takes is necessary to send the data.

Due to the compression, both the access times and the transmission duration and significantly reduced the storage capacity required.  

• 2.4-2.7 Technical functional description:
  Hardware required:
  A commercially available RAM memory and a microprocessor.

Required software:
A software that recognizes recognition of codes or their parts and, if already stored in the RNG's memory, converts them into a specified short form and sends them to the next medium as output.

Words or sentences in German or another language or parts thereof can be used in the RNG can be saved for later recognition.

When sending data from a computer system or the CPU (e.g. PC's, server, host and Terminals) to a storage medium or to an output for data transmission, the Data intercepted by the upstream RNG. The intercepted data is from the RNG checks whether parts from it are already stored in memory and known. If parts of the sent information are known to the RNG, these are filtered out and into one predefined short code and sent as short code to the next medium.

The target medium only receives the short info of the RNG's.

If the information sent out by the CPU is not known to the compression memory RNG, the information is sent unchanged to the target medium.

Before and after a short coding by the RNG, the RGN provides control information short-coded bit appended or sent ahead, so that a clear identification when Reading back the storage medium that RNG causes causes the following bit information in the To convert the original code back, or the following ones for the final byte control information To pass on information unchanged.

Example of a conventional method without RNG:
A word entered on a keyboard is converted letter by letter into a 3 bit combination and sent to a storage medium. The information is written to the storage medium in this 8 bit combination.

Example of a method with RNG:
If the compression memory RNG is interposed as a translator in a shorter form, only this shortened form is written on the storage medium.

Beneficial effect and an example of commercial application

By using the compression memory RNG in mechanical storage media such. B. Hard drives, CD-ROMs and floppy disks achieve faster data access. The The amount of data stored on the same medium is increased many times over. At Remote data transmission takes a shorter transmission time.

There is a direct cost reduction through the points mentioned, of course in Depending on the size of the information to be shortened, or depending on the in the RNG stored information sets.

Functional example; in short

The compression memory RNG works as follows:
The word "purchase" is recorded and stored in the RNG as short code "20".

The word "dare" is in the RNG as short code "96" recorded and saved.

From the keyboard of the operator terminal, the word shopping cart is attached to a file . . . sent to the target medium hard disk.

The RNG connected in front of the hard disk receives the information from the operator terminal "Shopping venture". The RNG recognizes the word "purchase" and the word "dare" and sends the following to the target medium (hard disk):

• 1. For the word "purchase" the short code "20". Control bytes are sent before and after "20".
• 2. The final control byte ends the shortened transmission.
• 3. Now the byte for the "s" 'is sent, since this was not known to the RNG.
• 4. For the word "dare" the short code "96".
  The control bytes are sent again before and after the short coding.

Control byte "20" Control byte "s" is now on the target medium (hard disk) Control byte "96" control byte.

When reading back the storage medium (hard disk), the RNG recognizes from the Control bytes that he read the short information at the first control byte and back into the The origin must convert, or the following information for the next control byte forwards unchanged.

Claims (1)

Compression memory for IT systems: RNG (short name). The following patent protection is sought:
for the method, the method and the device "Compression memory for EDP systems: RNG for the shortening and recoding of data information, of whole or parts of words and / or sentences, but consisting of at least two letters, and the composition of words or sentences or their parts (or the corresponding character code), for shortened sending to storage media of any kind (e.g. hard drives, floppy disks and CD-ROM), or to peripheral devices (e.g. printers etc.), or for use with This means that several letters or words are combined and combined into a single-digit or multi-digit number, which is the pseudonym of the summary, which occurs in the form of a bit combination instead of the original information.
As well as in the reverse case (when reading out), reading the shortened data information and converting it back into the original character code.