WO1989005177A1

WO1989005177A1 - Monitor for video-games

Info

Publication number: WO1989005177A1
Application number: PCT/IT1988/000013
Authority: WO
Inventors: Luciano Meoni
Original assignee: Hantarex Spa
Priority date: 1987-12-10
Filing date: 1988-02-22
Publication date: 1989-06-15
Also published as: IT1221562B; IT8703726A0; ES2097709A6; AU1367988A; PT88388A

Abstract

On the inlet lines of the primary colours (1, 2 and 3), the video signal reaches a device of three pre-amplifiers (4) which carry out an amplification to regulate by means of the contrast check. When getting out, the signals arrive at another analogous device, also consisting of three amplifiers (5) carrying out an additional amplification of the signals to arrive to levels apt to control the kinescope (6), while also the chromatic temperature of the white colour are regulated too. The adoption of pre-amplification (4) and amplification (5) devices, which work with D.C. couplings, excludes the presence of anomalies in the video signal and temporization faults, due to the absence of black reference during the horizontal flyback.

Description

"Monitor for video-games".

The invention refers to improvements in the monitor for video-games which mainly enable to avoid that uncorrectnesses in the video signal and temporization defects, such as for instance the fault of a level equivalent to the black during the return time of the horizon tal scanning, should cause anomalies in the video presentation. By means of a set of connections, the invention furthermore allows to bring the control devices to a distant position and to put them under only one control device, thus facilitating their employ and avoiding the present emplacement inconvenience due to the necessity of being compelled to foresee their positioning in the narrow spaces allowed by the video-games structures. The means can be used with advantage in the electronic equipments apt to transduce an electric signal into a luminous information presented on a screen which is an integrating part of the machine.

In the video-games sector, the exigency is felt of having the working of the device, which determines the video gains, consistent with the monitor which comes from another production source. The present production foresees a device which uses a video amplifier coupled in A.C.. This requires the stabilization of the electrical level corre sponding to the black colour which is carried out during the synchronization time of the video signal and, to be performed, it requires that the above signal, before and after the synchronism, presents scene time during which it is stable at the electrical level corresponding to the black colour. Should the above features of the video signal be lacking, a level of the black colour will be present in the relevant video representation and, consequently, an instable level of all other colours. Therefore, all present monitors shew working inconveniences when connected with electronic games having a video signal without the above features.

The invention device enables the solution of the problem by adopting a monitor which can be connected to video-games to visualize the relevant electrical s.ignals and which does not show visual anomalies when video signals are present with incorrect features. Substantially, the video signal reaches the three inlet lines 1, 2 and 3 of the three primary colours (red, green and blue) of the device 4 consist ing of the three identical video preamplifiers, each one of them for any priirary colour, which amplify the video signal to regulate by means of the contrast check. The outlet signals arrive to the subsequent device 5 consisting of three identical video amplifiers, still one for each colour, which come to an additional amplification of the video signals up to the levels which are suitable for the control of the kinescope 6. Furthermore, in the device 5 the chro matic temperature and the one of the white colour are carried out. On lines 7 and 8, the synchronism signals are connected to block 9 which consists of two amplifiers, one of them for the horizontal and the other for the vertical synchronism, and of two polarity inverters with a view to choosing the polarity of the inlet signals of synchronism to the lines 7 and 8. The synchronism signal arrives from block 9 to block 11, through line 10, formed by an oscillator synchronized by the horizontal synchronism signal, the task of which is to send a piloting signal with two functions: to supply a piloting signal to block 13 by means of line 12, and to supply the verti cal synchronism to block 15 through line 14. The block 13 consists of of a circuit performing the horizontal deflection of the kinesco pe electron bundles and generates the four feeding tensions 16, 17, 18 and 19 for the kinescope. Block 15 generates the vertical deflec tion of the electron bundle to the kinescope and the extinguishing signal during the square interval which arrives to block 21 through line 20. Block 13 generates an extinguishing signal during the horizontal return phase of the electron bundle reaching the block 21 through line 22. Block 21 consists of a circuit which supplies a ze ro setting signal of luminosity arriving to the kinescope 6 through line 23, in coincindence with the signal caning from lines 20 and 22. On line 24, block 15 supplies, furthermore, a correction signal in proportion to the vertical deflection width, and this signal is used by a form shaper 25 of a correction signal which is as wide aa the horizontal deflection reaching block 13 through line 26 and serv es to correct the geometrical distortions of kinescope 6. Block 27 consists of a set of regulations for the correct working and best geometries of the monitor. This block is connected with blocks 15 and 13 through the lines 28 and 29. These lines can be prolonged so as to bring block 27 out from the monitor. Block 30 is a feeding circuit with the task of converting A.C. at the inlet of line 33 in to D.C. for general feeding the monitor and which reaches block 13 through line 31. Block 13 task is to supply auxiliary tensions to block 9 and 11 through line 32, to block 5 through line 34, and to block 15 through line 35. Another particular feature of the invention cosists in foreseeing a set of ducts to bring the control devices according to a special block available at a distance from the monitor.

An execution form is illustrated in a scheme with installation blocks in fig. 1 of table 1. The monitor may be carried out in different way by means of components and integrating as well as connecting means in accordance with the specific use requirements.

Claims

Claims.

1) Monitor for video-games, characterized by the fact that the video signal arrives on inlet lines (1, 2 and 3) of the priitHry colours at a device (4) consisting of three pre-amplifiers carrying out an amplification which can be controlled by means of the contrast check. In outlet, the signals arrive to another device also consisting of three airplifiers (5) which perform an additional amplification of the signals until levels are reached which can be used for the kinescope (6) control. In the device with three airplifiers (5), the chromatic temperature of the white colour is furthermore regulated. The adoption of preamplification (4) and amplification (5) devices, which work by means of coupling in D.C, excludes the presence of anomalies in the video signal and avoids temporization defects, such as lack of an electrical level equivalent to the black colour during the return time of the horizontal scanning.

2) Monitor for video-games, as per claim 1, characterized by the fact that a set of ducts is foreseen which are integrated in a cabling, to bring the control devices for the monitor regulation according to a special block fitted with a universal fixing device, available at a distance from the monitor, thus facilitating the servicing operations of the unit.