DE3023490A1 - Visual observation of processes - using colour TV receiver with video-text and fast transfer at more than two lines Per half image - Google Patents

Abstract

A display device reproduces processing data presenting process elements accurately w.r.t. a time axis in the form of a bar chart housing when they begin and end. The arrangement is reduced in cost. The display unit is in the form of a colour t.v. receiver with a video test broadcast adaptor and/or a screen text post office adaptor. More than two lines of data are transferred per t.v. half image. The increased information transfer density can either be used for more rapid image refreshing or for transferring more pages of text contg. different information. The operating mode can be selected via an operator console.

Description

DEVICE FOR VISUAL EJBERWACH ONE

PROCESS FLOW The invention relates to a device according to Patent ......... (patent application P 29 50 102.8).

For processes in which several processes take place in parallel or one after the other must run in a coordinated and controlled manner, is generally a clear one Representation of the entire process for the surgeon is desirable. In particular this applies to process flows in radio and television operations, for example Sendabbl on expensive equipment or editing control devices for magnetic tapes.

The representation of such process flows takes place for the most part on Screen viewers in the form of lists or tables.

Each individual process has a beginning and next to its name provided an end time. In the head of the display device representation then becomes general the current time and possibly the remaining time until the next event displayed.

Such list or table representations of process flows are not very clear, as numbers are always read and possibly also need to be compared. During the process, these numbers change continuously and can therefore only be read more poorly. Experience has shown that a digital Time display, especially in the seconds range, is much less convenient than one analog time display with a pointer clock. Especially if by a surgeon in An analog time display is to be used to trigger a process at a specific point in time indispensable for at least a few seconds.

If several processes are running at the same time, they are also manual Interventions are required at certain times, is an analogous representation the process sequence is even more important than with a single event or a single event sequence. As an example, let us just consider the final mixing of several sequences of sound events into one Called the final audio version of a television film, where up to 12 audio tracks parallel to the Run the picture and manually influence its level according to the picture event Need to become. Here it would be very helpful for the sound engineer if he could use the in the next seconds expected sound events would be displayed beforehand, to then to be able to react in a more targeted and concentrated manner.

The same applies analogously to the mixing of several image events or other process flows.

In order to clearly display the analog representation of at least one To enable process flow has been proposed in the main patent, for optical Reproduction of the process data to use a screen display device, its image generation part is designed such that the process operations on a time axis true to their Appearance and disappearance can be displayed in the form of a dynamic bar chart are.

Screen vision devices, also with built-in character generators, are, however, many times more expensive compared to television receivers. that for the use of such screen vision devices for the proposed device additional modules including programming are required.

In contrast, the task of the additional invention is to reduce the costs for a device according to the main patent to reduce significantly.

According to the invention, the task is achieved by the characterizing features of claim 1 solved.

An advantageous further development and configuration of the device according to claim 1 results from claim 2.

The device according to the invention is used as a screen display device a standard television receiver with a built-in video or screen text decoder provided, which is many times cheaper than a "professional" screen viewer is. With a television receiver equipped in this way, all, for visual monitoring of a process flow graphic image elements to be displayed represent.

The invention is explained in more detail with reference to the drawings.

It shows: Figure 1 is a block diagram of an embodiment for a Device according to the main patent, and Figure 2 is a block diagram of an inventive Furnishings.

The device shown in Figure 1 according to the main patent includes a process controller 2 which controls the process 1 symbolized by a block 1. All current process and time data are stored in the process control 2 and are constantly updated. The one for the optical reproduction of the process data operation event bars and markers provided on a screen display device 6 are generated in a bar and mark generator 3.

When using a conventional television monitor as a view, e.g.

device 6 know the process bar in the row direction.

The process control 2 receives the respective from a fixed mark generator 4 Communicated time scale, the process control 2 then calculates the beginning in each case and end of the activity bar as well as the marker fade-in point and shares this data for each process separately in a 40 millisecond cycle (or longer) the bar and mark generator 3 with. This generates the bar and mark signals from this, possibly on three channels from which a signal mi shear 5 is a color television signal to control the screen display device 6 is generated. The remaining alphanumeric Characters are formatted according to the specification from the fixed mark generator 4 as well as data specification generated by the process control 2 in a character (character) generator 7 and at Also delivered to the signal mixer 5 in 3 channels as required. Be the same the fixed marks are generated in the fixed mark generator 4 and sent to the signal mixer 5. If the time scale is to be made switchable, a switchover device is required 8 provided. The generators 3, 4, 7 and the signal mixer 5 are through a common clock signal source 9 clocked. The data transfer from and to the process control 2 can be done asynchronously.

In contrast to the device according to Figure 1, the one in Figure 2 from the device according to the invention shown in the process control 2 existing Control data and, if necessary, those in the fixed mark generator 4 additional information generated by the process control 2 is an image page of the dynamic Bar chart with additional information generated according to the rules of the teletext standard.

The coded information is passed on to the data inserter 5a, which this data into a selected number of lines of a video signal 10 after according to the teletext standard. The video signal obtained in this way with inserted process flow data 11 can now either directly or via a modulator 13 and the RF part 14 of the Color television set 6a are supplied to the teletext decoder 12. This decodes the teletext data and stores them in the frame buffer 15. At the same time will the video signal 10 is switched to the image part 16 of the receiver 6a and can if necessary be made visible.

As almost all color television receivers available on the market with additional teletext also have an input for video text data at the same time (video text is a service of the Federal Post Office in which data is transmitted over normal telephone lines and can be made visible on a television receiver via a special modem), The process control data 17 could also be fed directly to the screen text part 18 will.

The last-mentioned proposal, however, has the disadvantage that the video text data are only transmitted at a bit rate of 1200 baud. Since a text page is made up of 9,600 bits, it takes 8 seconds to build an image or to ti (; r < t) paatn one Image. This time would be too long for a dynamic bar chart.

In contrast, it is according to the teletext standard for the service of broadcasters when using 2 lines per field, it is possible to transmit 4 images per second.

In addition, in a special application, as described here, It is easily possible to fill more than 2 lines per image with data.

This higher information transmission density can either for faster can be used or for the transmission of several text pages with different information content.

These can be different via the control unit of the television receiver 6a Pages of text can be called up by the operator as required.

Another advantage of using the teletext method, same whether the signal is modulated or used directly is the possibility of Problem-free distribution of the signal to several color televisions, even further away.

Another advantage is that a normal video signal is also available if required can be transmitted with and optionally or or together with the dynamic The bar graph can be changed / made visible on the screen.

Finally, there is a list of the essential technical ones Teletext and video text data: - A text page consists of 24 lines of text 40 characters each, 960 characters in total - screen resolution 6 MHz - character coding according to JSO 7 code table (modified) - 222 different symbols 26 capital letters 26 lower case letters 40 digits and special characters 130 graphic elements - 6 colors and white / black teletext transmission 360 bit 40 bit per television line Run in, framing code, text line address 320 bits # 40 characters (8 bits per character) NRZ code data flow per line 6.9375 MBit 2 lines per field 12 fields per Text page 0.24 sec per text page; s 4 text pages per second average Data flow 36,000 baud screen text data flow 1200 baud 10 bits per character 8 seconds per page of text Blank page

Claims (2)

PATENT CLAIMS Device for visual monitoring of a process sequence with a screen display device for the optical display of process data from a process control system, the image forming part is designed so that the process operations on one Timeline true to its appearance and disappearance in the form of a dynamic bar chart can be represented, according to patent ......... (patent application P 29 50 102.8), d a d u notices that a color television receiver is used as a screen display device provided with additional teletext device and / or with additional teletext device is. 2. Device according to claim 1, characterized in that one Data volume of more than two lines per television field is transmitted.