DE9100888U1 - Cable editing control for 2, 3 and more VCRs - Google Patents

Description

LMS teaching and learning materials, publisher

Gerhard Greiner

with the video department

VIDEO-ATTRACTIVE-STROBL

Roggensteiner Str. 55

8089 Emmering

Tel. 08141/44177 Fax: /41358

To the

German Patent Office

Dept. of Utility Model Protection

Zweibrückenstr. 12

8000 Munich 2

Emmering, 23.1.1991

REFERENCE NUMBER: G 91 00 888.3

UTILITY MODEL APPLICATION Cable editing control for two, but above all three and more video recorders with synchro-edit editing control coupling and common start-up (master and slave pre-rol1), from infrared remote controls with jog/shuttle device.

1. State of the art

2. Problem and innovative significance of the invention

3. Inventive steps

4. Realisation

5. Industrial applicability

6. Unity of invention
Appendix: Drawings

100

- 2 1.: State of the art

The market offers consumer video recorders of various systems (VHS and via adapter cassette VHS-C, S-VHS and via adapter cassette S-VHS-C and Hi 8, including Video-8), which

a) with jog/shuttle search wheels and

b) are equipped with Synchro-Edit editing control systems in three incompatible variants.

Equipment a) enables visual search (starting from a still image), with continuously variable speed, both forwards and backwards.

Equipment b) enables the almost frame-accurate electronic editing of video material, as is usual with professional video technology, by using the devices

1) can be started together by pressing a button.

2) reset something together from the freeze/pause function, accelerate forwards again together and build up synchronization before the copying process is started electronically from the previously selected cutting point (= freeze frame).

Equipment b) has also been integrated into a number of camcorders; since no camcorder currently offers equipment a), electronic editing of camcorders on stationary recorders (without an editing computer) is less user-friendly.

The present invention is fully valid for camcorders that have feature b) and will have feature a) in the future.

Devices with a variant of the Synchro Edit system for direct device connection via a cable or for intermediate editing controls for two recorders are

CK

e.g. the following:

- Stand recorders of various systems with equipment a) and b):

Panasonic NV-F 70, NV-F 75, NV-FS 100, NV-FS 90, Blaupunkt RTV 920, from 1991/3: NV 8000 / RTV 1000, and others.

- Stand recorders of various systems, some with remote controls without equipment a) and some also on the device without equipment a):

JVC HR-S 9000, HR-S 5500, HR-D 950, Sony EV-S 1000, SLV-656 and various others.

- Camcorder with equipment b)

Panasonic NV-MS 1, NV-M 10, NV-M 7, NV-MS 50, NV-MC 30, NV-MC 20, Canon Hi 8 A 1 and various others.

Equipment b) is available in three versions on the market, introduced by Panasonic, JVC and Sony. Panasonic, Blaupunkt and Sony currently offer editing controls for TWO recorders or ONE camcorder and ONE recorder. (e.g. Panasonic VW-EC 300; one jog/shuttle wheel for two devices. Sony RM-E 300 for two devices). So-called editing computers from various manufacturers (GSE, Bauer Bosch, Rowi and others) are also only designed to control two devices!

2.: Problem and innovative significance of the invention :

2.1 The market does not offer a solution for controlling three-machine editing stations with consumer devices (two players and one recording recorder).

However, only this device configuration, together with a mixer, enables smooth crossfading or

9100 SSG

- 4 trick fades from one source to the second.

The market currently offers the following mixers, among others:

In FBAS mode:

Panasonic WJ-MX 10

Blaupunkt DVM 1000

In S mode (separated for separate control of luminance and chrominance):

Panasonic WJ-MX 12, WJ-AV 5

Blaupunkt DVM 2000

Drawing 1 in the appendix outlines such a three-machine editing station with corresponding recorders, control monitors, editing control for three recorders as well as mixer and character generator coupled to it.

2.2 The individual infrared remote control of each recorder addresses each recorder with a receiver diode due to the high signal dispersion over a wide area. This means that control commands that are given on an infrared remote control and intended for one recorder are received and implemented by all recorders. Infrared remote controls are therefore unsuitable for controlling individual recorders in editing rooms. Switching options such as those on the NV-FS 90 only allow 2 recorders to be controlled with different frequencies.

2.3 For editing by sound (e.g. at the end of a word), the sound must be assignable to each individual picture or field. It must therefore be made audible in jog/shuttle mode with single-picture switching and at any selected visual search speed. In contrast to professional editing recorders, consumer recorders are equipped with a sound mute function at the factory. This means that the sound is only fed out to monitors in play mode.

9100 88G

2.4 The shuttle wheel on the recorder, unlike that on the remote control, remains in any position. This allows copying of still images and slow motion effects to the recording recorder with optimized adjustment of the freeze frame and other recorder functions, unless the synchro edit control coupling ignores the desired playback speed and lets the recorder play at normal playback speed.

Of interest is the solution to the problems described and a video technology level resulting from the inventions with consumer devices for:

- scientific institutes

- Companies

- Small studios as cost-effective, user-friendly editing space

- Large studios

and broadcasters as an off-line editing suite.

It enables precise editing results while making full use of the possibilities of a mixer, at low acquisition costs - compared with three-machine editing stations that are made up of devices from the professional ranges of Panasonic, JVC, Sony or other suppliers - and with a previously unknown level of user comfort.

9100

- 6 3.: Inventive steps

3.1 Solution to problems 2.1 and 2.2 The infrared remote controls with jog/shuttle wheel of each individual recorder (they are usually included in the delivery) are . . .

a) integrated together in a specially prepared plastic desk.

(see drawing 2 in the appendix)

If more than three recorders form an editing station, two such consoles are connected in a row. For two-machine editing stations, control B is not required. The concept allows for subsequent expansion to a multi-machine editing station.

b) modified by removing the infrared transmitters and soldering control cables instead. These are fed through a hole in the base of the infrared remote control into the interior of the editing console. For each remote control of a recorder, an eight-core cable (unshielded, control cables) is fed from the editing console to the back of the recorder. A lockable 8-pin plug is soldered to the end of each cable, (see drawing 3 in the appendix). A corresponding 8-pin socket is installed in the back of the recorder. The two wires fed from the remote control are fed inside the recorder to the infrared receiver on the front of the recorder. There the infrared transmitter from the remote control is soldered back on (to the cable ends of the laid wires) and mechanically fixed next to the infrared receiver of the recorder, (see drawing 4 in the appendix)

By fixing it next to the infrared receiver, it is

a) the recorder remote control, which is embedded in the console can be controlled from, but also from

b) an additional infrared remote control. This is interesting for the presentation of a video production. The presenter does not have to go to the editing control to give commands to the recorder.

OQ "
OUJ

3.2 Solution to problem 2.3

By tapping the audio line before the factory-installed audio mute switch and bridging it, the desired cut-tone circuit is possible.

This sound mute bridging is explained using the S-VHS recorder RTV 920 from Blaupunkt:

1. Tap on the base of the QR 6015 / UN 2213 module (see fold-out sheet 2-31 of the service manual for this recorder; extract as drawing 5 in the appendix)

2. Tap on the positive pole of module C 4028 / 50V1

(see fold-out sheet 2-84 of that service manual; extract as drawing 6 in the appendix)

3. A resistor of 1000 ohms must be soldered into this bridge (N 4148).

4. If this editing sound circuit is to be switched off (e.g. during presentations), a simple switch must be connected to the middle pin in the "ON" position with ground (e.g. from component C 4028) and to the other pin with a supply line from the bridge described in points 1 - 3 (see drawing 7 in the appendix). In order to enable speeds that differ from the play mode in sound muting during the presentation of finished productions, the editing sound circuit (= sound muting bridge) is led via the recorder socket described in 3.1 to the editing console. Toggle switches installed there and control diodes soldered in parallel enable the choice between "editing sound circuit" and "sound muting".

3.3 Solution to problem 2.4

The manufacturers offer Synchro Edit cables (e.g. Panasonic VW-K1E) for connecting a camcorder and a stand-alone recorder or two stand-alone recorders. Controlling three or more recorders is not provided. Nor is switching off the Synchro Edit coupling. We solve these problems with the following wiring:

9100 R8

From the Synchro Edit socket or the corresponding plug (for the Panasonic NV-FS 100, for example, 2.5 mm jack, 3-pin), the wires are led to the 8-pin plug. From there, via the eight-wire cable described above, to the editing control console. In this, the converging wires of all the recorders in the editing station are connected in parallel and soldered.

In order to be able to interrupt the synchro-edit coupling between one of the playback recorders and the recording recorder for the still image or time-lapse recording of scenes, the control pulse-carrying wire of each playback recorder is led via a switch with a light-blinking diode soldered in parallel.

The user can activate the control coupling for each player-recorder connection for dubbing in playback mode at normal speed (diode lights up green), but can also deactivate it for dubbing special effects (diode flashes red).

In order to keep the cable routing clear, the sync edit wires of each recorder were not routed to the editing console in separate cables, but in the described route.

The 5-volt power supply for the LEDs in the editing console is tapped in the recording recorder and fed to the editing console in a wire via its eight-pin connector.

4.: Realization

The ideas described have already been implemented several times in the publisher's own editing suite and in editing suites supplied.

5.: Commercial applicability

All plug and socket assignments as well as switch pin assignments are recorded in writing and sketched. The

r-. r\ f-

U Ö U

The assignments of the individual pins and cable colors are defined. This not only ensures series production, but also possible repairs by specialist workshops in remote locations.

6.: Unity of invention

The preliminary work described in point 5 ensures that the invention can be implemented uniformly for the entire range of recorders that are suitable for this modification. The analog tapping points for the modifications described can be found in each service manual for a recorder type.

ööu

Claims (3)

REFERENCE NUMBER: G 91 OO 888.3 PROTECTION CLAIMS: 1. Cable editing control for 2, 3 and more consumer video recorders - which are operated together as an editing suite, - which come with an infrared remote control as standard, - which have a jog/shuttle facility on this infrared remote control and - which can be started synchronously with similarly equipped devices via the cabling of the Synchro Edit sockets characterized in that - the cable remote controls of all recorders to be controlled are combined in one console to form an editing control , - each recorder is connected to a remote control via cable, - every recorder can be operated from the editing control in all functions that can be controlled from the remote control, - after selecting the starting points for the playback recorder(s) and the recording recorder(s), all recorders can be started simultaneously by releasing the pause button on the recording recorder(s). • ■ V ^: 2. Cut sound switch = sound mute bypass
for consumer video recorders, characterized in that - the sound is output from the recorder at any playback speed and direction and can be heard via headphones/speakers. - you can choose between editing sound switching and sound muting for each recorder using a switch on the editing control. - the selected sound circuit is indicated by an LED per recorder in two different colors. 3. Disabling the synchro-edit connection from a player to a recording recorder in the editing suite, characterized by the fact that - for transferring playback speeds,
which deviate from normal PLAY operation, the control coupling of a playback recorder and a recording recorder can be temporarily disabled. - the selected circuit is displayed by an LED per recorder connection in two different colors. Emmering, 24 January 1991 revised on 15 June 1991 8SÜ