Claims
- 1. A data processing system with a look-up table means for implementing a transfer function with non-uniform resolution, the look-up table means having:
- a memory to store a plurality of function data;
- an input to receive external addresses for operating the memory;
- an output to provide the function data in response to the external addresses;
- wherein:
- the look-up table means comprises a converging means between the input and the memory for mapping specific ones of the external addresses forming a specific address region of an external address domain onto a single specific internal address for accessing the memory;
- the look-up table means is operative to receive the specific external addresses in a digital format; and
- the converging means is operative by selectively discarding bits of pre-specified ranks in the specific external addresses.
- 2. The system of claim 1, wherein the specific address region is hypercuboidal.
- 3. A data processing system with a look-up table means for implementing a transfer function with non-uniform resolution, the look-up table means having:
- a memory to store a plurality of function data;
- an input to receive external addresses for operating the memory;
- an output to provide the function data in response to the external addresses;
- wherein:
- the look-up table means comprises a converging means between the input and the memory for mapping specific ones of the external addresses forming a specific address region of an external address domain onto a single specific internal address for accessing the memory; and
- the converging means is operative to discard further specific ones of the external addresses in a further specific address region of the external address domain.
- 4. A data processing system with a look-up table means for implementing a transfer function with non-uniform resolution, the look-up table means having:
- a memory to store a plurality of function data;
- an input to receive external addresses for operating the memory;
- an output to provide the function data in response to the external addresses;
- wherein:
- the look-up table means comprises a converging means between the input and the memory for mapping specific ones of the external addresses forming a specific address region of an external address domain onto a single specific internal address for accessing the memory; and
- the look-up table means comprises an interpolation means coupled to the output of the memory for producing intermediate function data.
- 5. A data processing system with a look-up table means for implementing a transfer function with non-uniform resolution, the look-up table means having:
- a memory to store a plurality of function data;
- an input to receive external addresses for operating the memory;
- an output to provide the function data in response to the external addresses;
- wherein:
- the look-up table means comprises a converging means between the input and the memory for mapping specific ones of the external addresses forming a specific address region of an external address domain onto a single specific internal address for accessing the memory;
- the transfer function has a symmetry property;
- the look-up table comprises symmetry handling means being operative to map at least two external addresses, which are interrelated through the aforesaid symmetry property, onto a single internal address for access of the memory; and
- the look-up table means comprises an interpolation means coupled to the output of the memory for producing intermediate function data.
Priority Claims (1)
Number |
Date |
Country |
Kind |
93202092 |
Jul 1993 |
EPX |
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Parent Case Info
This is a continuation of application Ser. No. 08/274,944, filed Jul. 14, 1994, now abandoned.
US Referenced Citations (3)
Foreign Referenced Citations (1)
Number |
Date |
Country |
0220005 |
Apr 1987 |
EPX |
Continuations (1)
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Number |
Date |
Country |
Parent |
274944 |
Jul 1994 |
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