Video switching and mix/effecting equipment

• US 6,437,834 B1
• Filed: 05/27/1999
• Issued: 08/20/2002
• Est. Priority Date: 05/27/1998
• Status: Expired due to Fees

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Tagami, Hiroyasu
• Primary Examiner(s): Miller, John W.
• Assistant Examiner(s): DESIR, JEAN WICEL
• Application Number:
  US09/320,972
• Time in Patent Office: 1,181 Days
• Field of Search: H04/N.5268, H04/N.5265, 348/705, 348/706, 348/534, 348/555, 348/441, 348/556, 348/557, 348/584, 348/708, 348/722, 348/901, 348/908, 348/445, 348/450, 345/718
• US Class Current: 348/705
• CPC Class Codes: H04N 5/265 Mixing
• CPC Class Codes: H04N 5/268 Signal distribution or switching

Abstract

Video switching and mix/effecting equipment which performs video switching and mix/effecting by a single circuit configuration on SDTV and HDTV signals. The video switching and processing equipment comprises input converters for converting each of the HDTV signals into a set of low speed HDTV components; a switcher for performing switching so as to select plural sets of signals from the plurality of digital SDTV signals or from a plurality of corresponding components of low speed HDTV components to deliver selected plural sets of signals, the number of the plural sets of signals corresponding to the number of the low speed HDTV components converted from one HDTV signal; a plurality of video/mix effecting circuits provided in correspondence with the number of the low speed HDTV components, for processing the selected plural sets of signals; and an output converter for converting outputs of the low speed HDTV components from the respective video/mix effecting circuit and outputting an output HDTV signal, wherein the plurality of video/mix effecting circuits delivers plural sets of processed video signals of the SDTV signals or a plurality of the corresponding components of low speed HDTV components in accordance with the switching operation of the switcher.

Claims

1. Video switching and processing equipment receiving a plurality of digital high definition (HD) video signals and a plurality of digital standard (SD) video signals, comprising:

input conversion means for converting each of said HD video signals into a set of low speed HD video components;

switching means for performing switching so as to select plural sets of signals from said plurality of digital standard (SD) video signals or from a plurality of corresponding components of low speed HD video components to deliver selected plural sets of signals, the number of the plural sets of signals corresponding to the number of the low speed HD video components converted from one HD video signal;

a plurality of signal processing means provided in correspondence with the number of said low speed HD video components, for processing said selected plural sets of signals; and

output conversion means for converting outputs of the low speed HD video components from said respective signal processing means and outputting an output HD video signal,

wherein said plurality of signal processing means delivers plural sets of processed video signals of said SD video signals or a plurality of the corresponding components of low speed HD video components in accordance with switching operation of said switching means.

2. The video switching and processing equipment according to claim 1, wherein each of said SD video signals contains digital components.

3. The video switching and processing equipment according to claim 1, wherein said low speed HD video components converted by said input conversion means have a signal rate close to a signal rate of said SD video signals.

4. The video switching and processing equipment according to claims 1, wherein said input conversion means divides each of said HD video signals into four low speed HD video components.

5. The video switching and processing equipment according to claim 4, said input conversion means divides each of said HD video signals into luminance components and color components.

6. The video switching and processing equipment according to claim 1, wherein said switching means and said signal processing means perform signal switching operation and processing operation on said HD video signals and said SD video signals in common.

7. A video switching and processing equipment receiving a plurality of digital high definition (HD) video signals and a plurality of digital standard (SD) video signals, comprising:

input conversion means for converting each of said HD video signals into a set of low speed HD video components;

switching means for performing switching so as to select plural sets of signals from said plurality of digital standard (SD) video signals or from a plurality of corresponding components of low speed HD video components to deliver selected plural sets of signals, the number of the plural sets of signals corresponding to the number of the low speed HD video components converted from one HD video signal; and

output conversion means for converting outputs of the low speed HD video components from said switching means and outputting an output HD video signal,

wherein the selected plural sets of said SD video signals or said output HD video signal is delivered in accordance with switching operation of said switching means.

8. A video switching and processing equipment receiving a plurality of digital high definition (HD) video signals and a plurality of digital standard (SD) video signals, comprising:

input conversion circuits for converting each of said HD video signals into a set of n low speed HD video components (n;

integer);

selecting circuit for selecting at least n signals from said plurality of digital standard (SD) video signals to deliver selected signals when said video switching and processing equipment processes an SD video signal, and for selecting at least one set of the low speed HD video components from a plurality of corresponding components of low speed HD video components to deliver selected low speed HD video components when said video switching and processing equipment processes an HD video signal; and

output conversion circuit for converting the selected low speed HD video components from said selecting circuit to output an output HD video signal.