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1. 发明申请

WO1990013210A1 A COLOUR TELEVISON SYSTEM WITH DEVICES FOR CODING AND DECODING COLOUR TELEVISION SIGNALS 审中-公开
标题翻译：具有编码和解码彩色电视信号的设备的彩色电视系统
公开(公告)号：WO1990013210A1
公开(公告)日：1990-11-01
申请号：PCT/EP1990000575
申请日：1990-04-11
申请人： GRUNDIG E.M.V. ELEKTRO-MECHANISCHE ... , KAYS, Rüdiger
发明人： GRUNDIG E.M.V. ELEKTRO-MECHANISCHE ...
IPC分类号： H04N11/12
CPC分类号： H04N11/12 , H04N9/646
摘要： Owing to transmission with meshing spectra, crosstalk interference occurs in colour television systems which to some extent rather adversely affect the image quality. It is known to undertake three-diemsional filtering on the transmission and reception sides of colour television systems in order to obtain the lowest possible crosstalk inteference in the form of cross-colour and cross-luminance. The new colour television system contains a coding device in which the chrominance and high-frequency luminance are sub-scanned in time. In the decoding device the high-frequency of the colour television signal of the first and second half-images (whence elimination of cross-luminance) and the demodulated, low-frequency colour difference signals (whence cross-colour elimination) are added. In the new colour television system any modulation method may be used and it is compatible with conventional receivers operating on the PAL, NTSC, or SECAM standards.

2. 发明申请

WO1990008445A1 TELEVISION SYSTEM 审中-公开
标题翻译：电视系统
公开(公告)号：WO1990008445A1
公开(公告)日：1990-07-26
申请号：PCT/SU1989000015
申请日：1989-01-19
申请人： TESLER, Vladimir Efimovich , AVERBUKH, Irina Alexandrovna
IPC分类号： H04N11/08
CPC分类号： H04N11/12 , H04N7/0806 , H04N11/006 , H04N11/08
摘要： A television system whose full coloured television signal (EM(t)) is formed by the use of reflex-modulated signals (E3(t)), where, at the transmitting side, the quadrature modulation of subcarrier frequencies in the phases ''0'' and ±(π/2) is effected by means of videosignals (E1-1(t), E1-2(t)) so as to form reflex-modulated signals (E3(t)) on the subcarrier frequencies f chosen so that the required phase differences are obtained in the subcarrier frequencies in the neighbouring lines of the same frame and in the numerically identical lines of the subsequent frames, the thus formed reflex-modulated signals being then transmitted within the time intervals of the full coloured television signal (EM(t)) which are provided for them, whereas, at the receiving side, the packages of the reflex-modulated signals (E3(t)) are discriminated from the received full coloured television signal (EM(t)) and delayed in delay units (11) for time intervals which are multiples of the television scanning durations, after which the delayed and non-delayed packages are multiplied by harmonic signals (U1(t), U2(t)) in multiplying units (121, 122), are algebraically added in an adder (13) and then the modulating videosignals (E1-1(t), E1-2(t)) are discriminated from the signals obtained as a result of said adding.

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