US 5,493,339 A · System and method for transmitting a plurality of digital services including compressed imaging services and associated ancillary data services

Abstract

A video system for processing compressed video data into composite video data, the composite video data corresponding to a standard composite video signal type selected from a plurality of standard types, the plurality of standard types including at least one of an NTSC composite video signal type and a PAL video signal type, includes a processor, a standard video decompressor and a video interface. The standard video decompressor processes the compressed video data into decompressed video data and user data, the user data having VBI data encoded therein. The processor culls the VBI data from the user data. The video interface processes the decompressed video data and the VBI data into the composite video data with the VBI data encoded therein. The video interface includes a VBI data generator to process the VBI data into VBI signal data, a mixer coupled to the video decompressor to receive the decompressed video data, the mixer being coupled to the VBI data generator to receive the VBI signal data the mixer providing output Y, U and V data during an active portion of a scan line, and circuitry to process the Y, U and V data into the composite video data.

Claims20

Dependent claims

In a video system for processing compressed video data into composite video data, the composite video dam corresponding to a standard composite video signal type selected from a plurality of standard types, the plurality of standard types including at least one of an NTSC composite video signal type and a PAL video signal type, the video system including a processor and a standard video decompressor to process the compressed video data into decompressed video data and user data, the user data having VBI data encoded therein, the processor culling the VBI data from the user dam, a video interface to process the decompressed video data and the VBI dam into the composite video data, the composite video data having the VBI data encoded therein, the video interface comprising:

a VBI data generator to process the VBI data into VBI signal data;
a mixer coupled to the video decompressor to receive the decompressed video dam, the mixer being coupled to the VBI data generator to receive the VBI signal data, the mixer providing output Y, U and V data during an active video portion of a scan line;
and
circuitry to process the Y, U and V data into the composite video data.

1 more element

In a video system for processing compressed video data into composite video data, the composite video data corresponding to a standard composite video signal type selected from a plurality of standard types, the plurality of standard types including at least one of an NTSC composite video signal type and a PAL video signal type, the video system including a processor and a standard video decompressor to process the compressed video data into decompressed video data and user data, the user data having color burst parameters encoded therein, the processor culling the color burst parameters from the user data, a video interface to process the decompressed video data and the color burst data into the composite video data, the video interface comprising:

a subcarrier data generator to generate sine data and cosine data;
a first multiplier to process sine data into scaled sine data based on a function of a first parameter of the color burst parameters from the processor;
a second multiplier to process cosine data into scaled cosine data based on a function of a second parameter of the color burst parameters from the processor;
a mixer to combine the scaled sine data and the scaled cosine data, the mixer generating color burst portion data of the composite video data;
and
means for combining the color burst portion data with the decompressed video data to form the composite video data.

3 more elements

In a video system for processing compressed video data into composite video data, the composite video data corresponding to a standard composite video signal type selected from a plurality of standard types, the plurality of standard types including at least one of an NTSC composite video signal type and a PAL video signal type, the video system including a processor and a standard video decompressor to process the compressed video data into decompressed video data and user data, the user data having pan-scan data encoded therein, the pan-scan data defining a sub-portion of an active video portion of the decompressed video data, the processor culling the pan-scan data from the user data, a video interface to process the decompressed video data and the pan-Scan data into the composite video data, the video interface comprising:

a mixer coupled to the video decompressor to receive the decompressed video data, the mixer providing output Y, U and V data during the sub-portion of the active video portion of a scan line according to the pan-scan data;
and
circuitry to process the Y, U and V data into the composite video data.

Dependencies are inferred from the claim text.

System and method for transmitting a plurality of digital services including compressed imaging services and associated ancillary data services

Life of this patent

System and method for transmitting a plurality of digital services including compressed imaging services and associated ancillary data services

Life of this patent

Abstract

Claims20