Multiple HDTV format digital signal converter for converting an HDTV format to a format recordable on a digital video recorder/player
AssigneeAdvanced Television Test Center, Inc.
InventorCharles W. Rhodes
Life of this patent
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Abstract
A television signal format converter is provided for converting without loss of picture information any high definition television format to or from a given recorder/player format. An interface converts between RGB and luminance/chrominance inputs and between analog and digital inputs. The interface couples any proposed high definition television format to a plurality of pairs of memories. A clock and control circuit controls addressing of the memories for reading and writing so that conversion is performed between any high definition television format and the format required for a given high definition digital video tape recorder or any other comparable recorder.
Claims10
A circuit for bi-directionally converting a television signal between the television signal format and a format recordable on a digital video recorder/player comprising:
- an input circuit for accepting input data indicating the format of the television signal;
- an adapter circuit for adapting said television signal for digital storage;
- a plurality of pairs of memories for storing the television signal adapted for digital storage as digital data;
- and
- an oscillator circuit for generating a sampling frequency signal coupled to said adapter circuit for sampling said television signal, said sampling frequency signal being a function of said input data indicating said television signal format, and for generating an operating frequency signal coupled to said digital video recorder/player, both said sampling frequency signal and said operating frequency signal being supplied to said pairs of memories for bi-directionally converting the digital data stored in said pairs of memories between the television signal format and the format recordable on the digital video recorder/player, the memories being used to rearrange the digital data without compressing or expanding the data, the sampling frequency signal controlling the storing of digital data in a first memory of each pair of memories and the operating frequency signal controlling the reading of digital data from the second memory of each pair of memories when said television signal is being converted to a format recordable on a digital video recorder/player and said operating frequency signal controlling the storing of digital data in the first memory of each of said pairs of memories and the sampling frequency signal controlling the reading of digital data from the second memory of each of said pairs of memories when said television signal is being converted from the format recordable on a digital video record/player to said television signal format.
Dependencies are inferred from the claim text.