DE102015005028A1 - Method for recording a data stream - Google Patents

Abstract

The invention relates to a method for recording at least one data stream (1), wherein the at least one data stream (1) is generated by a data exchange between an application module (2), an output module (3) and an audio module (4), and wherein a recording module the at least one data stream (1) at the interfaces between the application module (2), output module (3) and audio module (4) picks up and stores.

Description

The present invention relates to a method for recording at least one data stream. Furthermore, the invention relates to a corresponding computer program product for recording at least one data stream. Finally, the invention relates to a control device for recording at least one data stream.

For the increasingly complex applications, especially in security-critical areas, it is necessary to record the temporal program flow including user interactions and reproduced for analysis or training purposes, in particular, the data that was not visible during the recording.

The problem with traditional recording methods is that special hardware is required, in particular video camera, microphone and video recorder, which must be synchronized with the application software. This synchronization is important for the analysis of the different recording channels in order to be able to reconstruct the correct timing. Application data is typically only available as data fields as part of an application interface, either filmed directly from the monitor, recorded by means of a screen-recorder software or via the digital video signal. Although the evaluation of the monitor images can be automated, it takes a very high image processing effort to reconstruct the application data from the image content. Furthermore, only the data that was visible on the monitor during recording is available for analysis.

The present invention has for its object to provide a recording and reproducing method, which manages without additional special hardware and creates records that record fully synchronous application and audio data and can interactively play.

The object is achieved by the features of claim 1. Thus, the object is achieved by a method for recording at least one data stream, wherein the at least one data stream is generated by a data exchange between an application module, an output module and an audio module. Furthermore, it is provided that a recording module picks up and stores the at least one data stream at the interfaces between the application module, the output module and the audio module. By grabbing data directly at the interfaces, it allows a user to interactively access the data while playing the data. With the ability to interactively access and analyze all data, the invention provides a new way of recording data that is not possible with existing solutions.

The dependent claims have advantageous developments of the invention to the content.

It is preferably provided that the data stored by the recording module can be output from a display module to the interfaces between the output module and the audio module. For the audio module and the output module, the output of the at least one data stream from the application module is simulated. It therefore makes no difference to a user whether he / she reproduces and analyzes the stored at least one data stream or accesses the application module directly. In particular, only access to special functions of the application module is prevented by the reproduction module since the reproduction module can not perform such functions. Such special functions are in particular functions that go beyond the mere preparation and presentation of data.

Particularly advantageous are the application module and / or the output module and / or the recording module and / or the playback module software modules. Alternatively or additionally, it is provided that the audio module is a voice-over-IP application. Particularly advantageous is the audio module, a voice-over-IP software application.

The at least one data stream between the application module, output module and audio module advantageously takes place via an Ethernet interface. This leads to a simplified recording of the at least one data stream. For this purpose, it is also advantageously provided that the at least one data stream is based on the Internet protocol.

In a preferred embodiment, the recording module stores the at least one via a further interface on a data memory. The storage on the data memory is in particular non-volatile. This ensures that the stored data is available for later playback.

Advantageously, the recording module additionally records data sent from the application module, the output module and the audio module to a dummy interface. The blind interface is also connected in particular to the said Ethernet interface. In this way it is possible for the recording module to record internal application data and / or application actions, whereby the degree of reality is increased in a later reproduction. Thus is In particular, an extended data analysis during playback allows.

Furthermore, it is preferably provided that the recording module records the at least one data stream in individual time slice blocks, wherein each time slice block has a predefined length. Once a time slice block is filled with the at least one data stream, i. that is, once the predefined length is recorded, the recording module applies another time slice block. In particular, it is provided that such time slice blocks are deleted whose storage times are older than a predefined limit value. This ensures that the storage requirements do not increase without limit.

It is particularly advantageously provided that a static memory image of the application module, output module and audio module is stored in the time slice block before starting the storage of the at least one data stream in a time slice block. Therefore, for later playback, it is possible to easily restore the state of the output module and audio module during recording and to simulate the state of the application module during recording in the playback module.

The invention further relates to a computer program product with machine-readable data code, wherein with the computer program product the aforementioned method steps are executable when the computer program product runs on a computing device. Computing device is to be understood here in particular as a computer or a microcontroller.

Finally, the invention relates to a control device comprising a data memory and a computing device. The computing device is in particular a computing device according to the above definition, so that the computer program product described can be executed on the computing device. Alternatively, it is provided that with the computing device, the aforementioned method steps are executable.

The invention will now be described in detail by means of an embodiment with reference to the accompanying drawings. Showing:

1 a schematic illustration of the flow of the method according to an embodiment of the invention during the recording of data, and

2 a schematic illustration of the flow of the method according to the embodiment of the invention during playback of data.

1 schematically shows the sequence of the method according to the invention in a preferred embodiment, wherein of a recording module 6 Subsequent IP packet recorder software 6 is called, at least one data stream 1 is recorded. The at least one data stream 1 is created by a data exchange between an application module 2 , the following application software 2 is called an output module 3 , the following edition software 3 is called, and an audio module 4 , the subsequent voice over IP application 4 is called. The data exchange between these modules 2 . 3 . 4 , and thus the transmission of the at least one data stream 1 , via an Ethernet interface. The at least one data stream 1 based on the internet protocol. Also connected to the Ethernet interface is a blind interface 5 , their received data also from the recording module 6 are recordable and storable.

The recording module 6 stores all recorded data in a data memory 7 , This form recording module 6 and data storage 7 a control device 9 while application module 2 , Output module 3 , Audio module 4 and blind interface 5 an application device 8th form. control device 9 and application device 8th may be separate devices or combined in a single device.

2 shows the application of the method according to the embodiment of the invention during the reproduction of data. In this case, the application device includes 8th only the output module 3 and the audio module 4 , Instead of the recording module 6 is a playback module in this case 10 to the Ethernet interface between the output module 3 and the audio module 4 tethered. Thus, the playback module 10 in the data store 7 stored data to the Ethernet interface. The control device 9 thus includes the playback module in this case 10 and the data store 7 , The data store 7 is subsequently used as a storage medium 7 designated.

As 1 For the recording and reproducing method, the IP packet recorder software is illustrated 6 with an application software 2 via a first interface with an output software 3 via a second interface and with a voice over IP application 4 connected via a third interface. All three connections are made via an Ethernet interface using IP packets, which store all data between the application software 2 , the output software 3 and the voice Over-IP application 4 transport. IP packets are data packets that are sent via the Internet protocol.

The IP packet recorder software 6 is a software that understands the entire IP traffic at the Ethernet interface, filters and interfaces on a storage medium 7 non-volatile stores. The filter function is used to suppress all IP packets that are not between the application software 2 , the output software 3 and the Voice Over IP application 4 be replaced.

To start recording, a user activates application software 2 , Output software 3 and voice over IP application 4 and the IP packet recorder software 11 ,

The application software 2 , the output software 3 and the Voice Over IP application 4 connect to their respective interface partners and perform their implemented tasks. At the same time the IP packet recorder software starts 6 , all IP packets between the application software 2 , the output software 3 and the Voice Over IP application 4 be exchanged, record and stored on the storage medium 7 store.

Optionally, the application software 2 , the output software 3 and the Voice Over IP application 4 internal application data and actions on a special optional dummy interface 5 send that as well through the IP packet recorder software 6 to be recorded. The blind interface 5 only has the task of receiving the data.

The on the storage medium 7 stored data is stored in time slice blocks of predefined length. If a time slice block is older than a predefined time, this time slice block is deleted and the free space on the storage medium 7 is available again for recording the current time slice block.

At the beginning of each time slice block, a static image of the current data is stored. To do this, send the application software 2 , the output software 3 and the Voice Over IP application 4 all data that is important for playback, again to their respective interface partners.

The same applies to the application data and actions that are sent to the optional dummy sections.

The user can stop recording at any time by using the IP packet recorder software 6 completed. For safety-critical systems, termination of the recording by the user can be prevented. In this case, the recording automatically stops when the hardware or software shuts down.

As 2 is for the recording and reproducing method by the IP packet playback software 10 using the output software 3 via an interface and with the Voice-Over-IP application 4 connected via another interface. The two connections are made via an Ethernet interface using IP packets, using the IP packet playback software 10 stimulates the above interfaces just as IP packets were recorded by the interfaces.

The user starts the output software 3 , the voice over IP application 4 and the playback software 10 which offers the user the selected time range for selection. After the user has selected a time within the recording area, the playback software reads 10 the associated time slice blocks and activates the interfaces to the output software 3 and the Voice Over IP application 4 ,

The playback software 10 sends this on the storage medium 7 stored static image of the data to the output software 3 and the Voice Over IP application 4 , The output software 3 uses the received static image to internally generate and display all data on the surfaces exactly as they were during the recording of the static image. The Voice Over IP application 4 uses the transmitted static image to restore the corresponding audio channels that were active during the recording. The static image of the application software 2 becomes internal in the playback software 10 held to later queries the output software 3 with the corresponding data.

After the static image has been distributed, the user has access to all the information to the application software 2 and the Voice Over IP application 4 as well as during the recording of the static image. The user has all views and displays at his disposal, which he can use for analysis at will. Only the activation of functionalities of the application software 2 That's about the mere provision of data, which is now provided by the playback software 10 provided, are not possible and are on the output software 3 disabled.

The user can start playback at any time, after which the playback software 10 , the IP packets stored after the static image dynamically in the recorded time clock to the output software 3 and voice over IP application 4 sends. Edition player software 3 and voice over IP application 4 then update their data and display it if one of the views or displays currently shows it.

During dynamic renderings, the user can use the output software 3 and voice over IP application 4 use as usual and use surface and audio features.

Optionally, the user may pause, resume, accelerate or slow down the playback, jump or stop at another time.

If the user selects a new time to play, the playback software initiates 10 that all current playback data within the playback software 10 , Output software 4 and voice over IP application 4 deleted and replaced with the image of the new time. Thereafter, as previously described, the static image is distributed and displayed.

• – transparentes Aufzeichnungsverfahren durch IP-Aufzeichnung an den originalen Applikationsschnittstellen
• – zusätzliche Aufzeichnung von internen Ereignissen und Daten mittels Blindschnittstelle
• – Middleware-unabhängige Aufzeichnung
• – Nutzung der original VoIP-Software (Voice-Over-IP-Software) zur Audiowiedergabe
• – Interaktive Nutzung der VoIP-Software während der Wiedergabe
• – Nutzung der Original-Applikationsoberfläche
• – Interaktive Nutzung der Applikationsoberfläche während der Wiedergabe
• – Zugriff auf alle Daten, die aufgezeichnet wurden
• – Zugriff auf statische Daten
• – Zugriff auf dynamische Daten
• – Aufzeichnung in Zeitscheiben
• – Überschreibung von Zeitscheiben nach einer definierbaren Zeit
• – Zeitscheiben mit statischem Abbild
• – Steuerung der Wiedergabe (Start, Pause, Fortsetzen, Stopp, Zeitpunkt springen, beschleunigte Wiedergabe, verlangsamte Wiedergabe)
• – Unterstützung für Nutzungsnachweis
• – Schulungsunterstützung und Analyse
• – Erstellung Aufbereitung von Schulungsszenarien
• – Post Missions Analyse

The invention has the following advantages in particular:

• - transparent recording method by IP recording at the original application interfaces
• - additional recording of internal events and data via blind interface
• - Middleware independent recording
• - Use of the original VoIP software (Voice Over IP software) for audio playback
• - Interactive use of the VoIP software during playback
• - Use of the original application interface
• - Interactive use of the application interface during playback
• - Access to all data that has been recorded
• - Access to static data
• - Access to dynamic data
• - Recording in time slices
• - Overwriting time slices after a definable time
• - Time slices with static image
• - control of playback (start, pause, resume, stop, jump time, accelerated playback, slow playback)
• - Support for evidence of use
• - Training support and analysis
• - Preparation of training scenarios
• - Post mission analysis

LIST OF REFERENCE NUMBERS

1

data stream

2

Application Module / Application Software

3

Output module I / O Software

4

Audio module / voice-over-IP application

5

Blind interface

6

Recording Module / IP Package Recording Software

7

data storage

8th

applicator

9

control device

10

Rendering Engine / player software

Claims (11)

Method for recording at least one data stream ( 1 ), wherein the at least one data stream ( 1 ) by a data exchange between an application module ( 2 ), an output module ( 3 ) and an audio module ( 4 ), and wherein a recording module stores the at least one data stream ( 1 ) at the interfaces between the application module ( 2 ), Output module ( 3 ) and audio module ( 4 ) picks up and saves. A method according to claim 1, characterized in that all of the recording module ( 6 stored data from a playback module ( 10 ) to the interfaces between the output module ( 3 ) and the audio module ( 4 ) are dispensable. Method according to claim 1 or 2, characterized in that the application module ( 2 ), the output module ( 3 ), the recording module ( 6 ) and / or the playback module ( 10 ) Are software modules and / or the audio module ( 4 ) is a voice over IP application, in particular a voice over IP software application. Method according to one of the preceding claims, characterized in that the at least one data stream ( 1 ) between application module ( 2 ), Output module ( 3 ) and audio module ( 4 ) via an Ethernet interface. Method according to one of the preceding claims, characterized in that the at least one data stream ( 1 ) based on the internet protocol. Method according to one of the preceding claims, characterized in that the recording module ( 6 ) the at least one data stream ( 1 ) via another interface on a data memory ( 7 ), in particular non-volatile stores. Method according to one of the preceding claims, characterized in that the Recording module ( 6 ) additionally records data that is received from the application module ( 2 ), the output module ( 3 ), or the audio module ( 4 ) to a dummy interface ( 5 ). Method according to one of the preceding claims, characterized in that the recording module ( 6 ) the at least one data stream ( 1 ) stores in time slice blocks of predefined length, in particular those time slice blocks are deleted whose storage time is older than a predefined limit. Method according to claim 8, characterized in that before the storage of the at least one data stream ( 1 ) in a time slice block a static memory image of application module ( 2 ), Output module ( 3 ) and audio module ( 4 ) is stored in the time slice block. Computer program product comprising machine-readable program code for carrying out the method according to one of the preceding claims, when the computer program product is executed on a computing device. Control device ( 9 ), comprising a data memory ( 7 ) and a computing device for carrying out the method according to one of claims 1 to 9 or for executing the computer program product according to claim 10.

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