DE3616276A1

DE3616276A1 - Interference-resistant optical transmission system for studio and home studio systems

Info

Publication number: DE3616276A1
Application number: DE19863616276
Authority: DE
Inventors: Helmut Dipl Ing Wegner; Andreas Dipl Ing Kamcke
Original assignee: WEGNER HELMUT
Current assignee: WEGNER HELMUT
Priority date: 1986-05-14
Filing date: 1986-05-14
Publication date: 1987-11-19

Abstract

A data transmission system with associated processing, encryption and decryption for the audio-visual domain (home and studio systems) characterised in that the data are processed digitally in a transmitter, transmitted in interference-resistant fashion via an optical waveguide (LWL) and recovered in the receiving component, designated individual receivers being selectable from a multiplicity of connected receivers. This system is characterised by the ability of the transmitter to process analog as well as digital incoming data and combinations thereof in such a way that transmission on the optical waveguide and subsequent decoding can be performed in an identical manner.

Description

Das störsichere optische Übertragungssystem besteht aus drei Teilen: einem Sendeteil mit der systemeigenen Si gnalaufbereitung, einem Lichtwellenleiter als Übertragungs strecke und dem Empfangsteil mit der systemeigenen Si gnalrückgewinnung.The interference-free optical transmission system consists of three parts: a transmitting part with the native Si signal processing, an optical fiber as a transmission stretch and the receiving part with the native Si signal recovery.

Die auf dem Lichtwellenleiter übertragenen Nachrichten bestehen aus dem zu übertragenden Inhalt und einem den Empfänger kennzeichnenden Teil. Die Signalaufbereitung er folgt nach den in den Nebenansprüchen 3.1 bis 3.5 näher bezeichneten Methoden.The messages transmitted on the optical fiber consist of the content to be transmitted and a Characteristic part of the recipient. The signal processing he follows in more detail from those in the dependent claims 3.1 to 3.5 designated methods.

Die nachgeschalteten Empfänger arbeiten nach den im Neben anspruch 2 aufgeführten Prinzipien.The downstream receivers work according to the in the secondary Claim 2 principles listed.

Für die Übertragung der Signale über den Lichtwellenlei ter finden die bisher bekannten Verfahren Anwendung.For the transmission of the signals over the optical fiber ter the previously known methods are used.

Zur Zeit findet in der Studio- und Heimstudiotechnik die Über tragung der Nachrichten mittels elektrisch leitender Ver bindungen zwischen den Sendern und den jeweiligen Empfän gern statt. Dabei werden für jeden Empfänger separate mehr adrige Leitungen verwendet. Wird ein Gerät sowohl als Sen der als auch als Empfänger betrieben, wie z. B. bei einer Magnetbandaufzeichnung, so wird für jede Übertragungsrich tung ein separates Leitungssystem verwendet, dessen Ader zahl mit der Anzahl der zu übertragenden Kanäle wächst.At the moment there are over in studio and home studio technology carrying the messages by means of electrically conductive ver connections between the transmitters and the respective recipients gladly instead. Thereby there will be more for each recipient core cables used. If a device is used both as a Sen operated as well as a receiver, such as. B. at a Magnetic tape recording, so for each transfer direction tion uses a separate line system, the core number grows with the number of channels to be transmitted.

Durch die Verwendung elektrischer Leitungen sind die Über tragungen durch externe elektrische und magnetische Fel der beeinflußbar.Through the use of electrical lines, the over external electric and magnetic fields the influenceable.

Mit der Erfindung soll für den Bereich der Studio- und Heimstudiotechnik eine störsichere Übertragung erreicht werden, die darüber hinaus in der Lage ist, gezielt Empfän gereinheiten anzusprechen. The invention is intended for the field of studio and Home studio technology achieved interference-free transmission who is also able to receive to address units.

Zur Lösung dieser Aufgabe werden die bisher bekannten störsicheren Verfahren der Übertragung mittels Licht wellenleiter verwendet unter Hinzufügung spezieller Ver fahren der Signalaufbereitung und Signalverarbeitung, die unter 2. und 3. der Ansprüche näher erläutert wurden. Die Vorteile dieser Erfindung gegenüber bisherigen Metho den der Übertragung von Nachrichten in der Studio- und Heimstudiotechnik bestehen einerseits in der Reduzierung der Anzahl leitungsgebundener Übertragungswege (durch Empfängerkennzeichnung), sowie andererseits in der Redu zierung der Störempfindlichkeit (durch Lichtwellenleiter). Durch die verwendeten Verfahren der Signalaufbereitung besteht die Möglichkeit, dieses System in derzeit beste hende Anlagen zu integrieren.To solve this problem, the previously known interference-free method of transmission using light waveguide used with the addition of special ver driving signal processing and signal processing, which were explained in more detail under 2. and 3. of the claims. The advantages of this invention over previous metho the transmission of messages in the studio and On the one hand, home studio technology consists in the reduction the number of wired transmission paths (through Recipient identification), and on the other hand in the Redu adornment of interference sensitivity (through fiber optic cables). Through the used signal processing methods there is a possibility to present this system in best to integrate existing systems.

Claims

1. A message transmission system with associated processing and encryption or decryption for the audiovisual area, characterized in that the message is digitally processed in a transmitter and transmitted interference-free via an optical fiber [LWL] , and is recovered in the receiver part, where some Receivers from a variety of connected ner can be targeted (Figure 1).

2. Active recipients, characterized by the implementation op table signals in digital electrical and their range ren conversion into analog signals. Influencing the magnitude and phase frequency response of the electrical Signals can be both digital and through analog filtering - if necessary in combination - pre be taken. It is also possible to connect to the electri signals through digital or analog mixtures respectively. Furthermore, the recipients are able to for them to select data from a data stream animals and to reconstruct (picture 2).

3. The signal processing necessary for the system mentioned under 1. is characterized in that the input messages to be transmitted can be both digital and analog. There are five distinguishable cases, which are explained below.

3.1 The content of the input message and the recipient identification are already available as separate digital signals (Figure 3.1) and can be processed directly.
3.2 The content of the input message and the recipient identification are available as digital signals, but in contrast to 3.1 they are not separate. For further processing of the signals, a separation of content and recipient identification is necessary (Figure 3.2).
3.3 The incoming message consists of an analog content and a digital recipient identifier. There is therefore a need to convert the analog signal into a digital signal (Figure 3.3).
3.4 The incoming message consists of an analog content and a digital recipient identifier, which, in contrast to 3.3, are not separate. For further processing of the signals, a separation into content and recipient identification is required, whereby, as under 3.3, the content must also be converted into digital signals (Figure 3.4).
3.5 The content of the input message and the recipient identification are already available as separate signals, but in contrast to 3.1 as analog signals. Both the content and the receiver identification must therefore be converted into digital signals (Figure 3.5).