Author: claimsbot

1. A method of cooling a computer server including a plurality of server modules, comprising:
maintaining a flow of air within a server module of the plurality of server modules to absorb heat from one or more heat generating devices of the server module;
directing the flow of air through an air-to-liquid heat exchanger of a liquid cooling system to transfer the absorbed heat to a coolant of the liquid cooling system, the air-to-liquid heat exchanger being positioned within the server module;
directing the coolant to a cold plate of the liquid cooling system, the cold plate being thermally coupled to a heat generating component of the server module; and
discharging heat from the coolant to a region outside the computer server.
2. The method of claim 1, wherein maintaining the flow of air within the server module includes keeping the server module substantially sealed such that the air remains substantially within the server module.
3. The method of claim 2, wherein the server module includes multiple server modules of the plurality of server modules, and discharging heat from the coolant includes removing heat from within each server module of the multiple server modules and transferring the heat to the region outside the computer server.
4. The method of claim 1, wherein discharging heat from the coolant includes transferring the heat to a medium outside the computer server.
5. The method of claim 1, wherein the cold plate is positioned upstream of the air-to-liquid heat exchanger such that the coolant passes through the cold plate before passing through the air-to-liquid heat exchanger.
6. The method of claim 1, wherein the cold plate is positioned downstream of the air-to-liquid heat exchanger such that the coolant passes through the air-to-liquid heat exchanger before passing through the cold plate.
7. A method of cooling a computer server, including a plurality of server modules, comprising:
circulating cooling air within a server module of the plurality of server modules to cool one or more heat generating components of the server module, the server module being substantially sealed to prevent flow of the cooling air outside the server module; and
transferring heat from the circulating cooling air to a liquid coolant passing through one or more air-to-liquid heat exchangers positioned within the server module.
8. The method of claim 7, wherein circulating the cooling air includes pushing the cooling air through at least one air-to-liquid heat exchanger of the one or more air-to-liquid heat exchangers using a fan positioned upstream of the at least one air-to-liquid heat exchanger.
9. The method of claim 7, wherein circulating the cooling air includes pulling the cooling air through at least one air-to-liquid heat exchanger of the one or more air-to-liquid heat exchangers using a fan positioned downstream of the at least one air-to-liquid heat exchanger.
10. The method of claim 7, further including discharging heat from the liquid coolant to a location outside the computer server.
11. The method of claim 7, further including cooling at least one heat generating component of the server module using a cold plate cooled by the liquid coolant.
12. The method of claim 11, wherein the cold plate is positioned downstream of at least one air-to-liquid heat exchanger of the one or more air-to-liquid heat exchangers such that the liquid coolant passes through the at least one air-to-liquid heat exchanger before passing through the cold plate.
13. The method of claim 7, further including circulating cooling air within a second server module of the plurality of server modules to cool one or more heat generating components of the second server module, the second server module being substantially sealed to prevent flow of the cooling air outside the server module.
14. The method of claim 13, further including transferring heat from the cooling air circulating in the second server module to a liquid coolant passing through one or more air-to-liquid heat exchangers positioned within the second server module.
15. The method of claim 13, further including one or more fans positioned within the second server module to circulate cooling air within the second server module.
16. A method of cooling a computer server including multiple server modules, comprising:
circulating cooling air within a server module of the multiple server modules to cool heat generating components of the server module, the server module being substantially sealed to prevent flow of the cooling air outside the server module; and
cooling the cooling air using an air-to-liquid heat exchanger positioned within the server module.
17. The method of claim 16, further including cooling one or more heat generating components of the server module using a liquid cooled cold plate fluidly coupled to the air-to-liquid heat exchanger.
18. The method of claim 17, further including circulating a liquid coolant through the cold plate and the air-to-liquid heat exchanger.
19. The method of claim 16, further including discharging heat from the air-to-liquid heat exchanger to a region outside the computer server.
20. The method of claim 16, further including one or more fans positioned within the server module to circulate the cooling air within the server module.

The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.

1. A television tuner provided with a mixer for subjecting one of entered digital television signals and analog television signals to frequency conversion into an intermediate frequency band and an intermediate frequency tuning circuit so configured as to enable a tuning frequency to be switched within the intermediate frequency band and arranged at a stage immediately following the mixer, wherein the intermediate frequency tuning circuit is tuned to a first frequency substantially at a center of the intermediate frequency band when the digital television signals are entered into the mixer and tuned to a second frequency higher than the first frequency when the analog television signals are entered into the mixer,
wherein Q of the intermediate frequency tuning circuit is lowered when the digital television signals are entered into the mixer, and wherein the Q is raised and the tuning frequency is tuned substantially to a video intermediate frequency in the intermediate frequency band when the analog television signals are entered into the mixer,
the intermediate frequency tuning circuit has a parallel tuning circuit to be substantially tuned to the video intermediate frequency, a series circuit including a switch diode and capacitance elements, and a resistor connected in parallel to the capacitance elements,
the series circuit is connected to the parallel tuning circuit in parallel, and
the switch diode is turned on when the digital television signals are entered into the one of the mixer and the switch diode is turned off when the analog television signals are entered into the mixer.
2. The television tuner according to claim 1 wherein the television tuner has switching means provided at a stage following the intermediate frequency tuning circuit and an intermediate frequency circuit for digital signals and an intermediate frequency circuit for analog signals provided in parallel at a stage following the switching means, and wherein the digital television signals having undergone frequency conversion into the intermediate frequency band by the switching means are entered into the intermediate frequency circuit for digital signals and the analog television signals having undergone frequency conversion into the intermediate frequency band are entered into the intermediate frequency circuit for analog signals.
3. The television tuner according to claim 2, wherein switching signals to distinguish whether television signals entered into the mixer are the digital television signals or the analog television signals are applied to the switch diode and the switching means.

1. A method for automatic detection of a contrast agent inflow in a blood vessel of a patient with a computed tomography (CT) system, the method comprising:
providing, using a computer device, statistical average values of principal components of a previous evaluation of a multiplicity of statistically comparable CT representations by,
determining a multi-dimensional position of distinctive points of anatomical structures including a multi-dimensional position of at least one blood vessel or an ROI for the at least one blood vessel,
carrying out a per CT representation principal component analysis, and
calculating the statistical average values of the principal components;

carrying out, using the computer device, a multiplicity of chronologically progressive scans in at least one section plane;
progressively calculating, using the computer device, CT representations for respective datum;
determining, for each CT representation and using the computer device, a multi-dimensional position of distinctive points of recognizable anatomical structures, except with regard to the at least one blood vessel or the ROI for the at least one blood vessel;
determining, using the computer device, principal components for each CT representation;
determining, for each CT representation and using the computer device, a deformation vector from the statistical average values of the principal components to the determined principal components;
determining, for each CT representation and using the computer device, a transformation of the multi-dimensional position of the at least one blood vessel or the ROI for the at least one blood vessel;
determining, using the computer device, a change in image values as a function of time in a region of the at least one blood vessel or the ROI of the at least one blood vessel over a multiplicity of the CT representations at respectively transformed positions of the at least one blood vessel or transformed ROI for the at least one blood vessel; and
when a first threshold of the image values is exceeded, using the computer device to perform at least one of
outputting the image values in the region of the at least one blood vessel or the ROI of the at least one blood vessel, and
triggering an action.
2. The method as claimed in claim 1, wherein in addition to the positions of distinctive positions of recognizable anatomical structures, CT image values of at least one anatomical structure are also ascertained and processed in the principal component analysis.
3. The method as claimed in claim 2, wherein CT image values are ascertained, and processed in the principal component analysis, exclusively at the multi-dimensional position of the at least one blood vessel or the ROI.
4. The method as claimed in claim 2, wherein CT image values are ascertained, and additionally processed in the principal component analysis, for a plurality of positions of anatomical structures of the at least one blood vessel or the ROI.
5. The method as claimed in claim 2, wherein CT representations, which have been recorded without contrast agent in a bloodstream, are used to determine the statistical average values of the principal components.
6. The method as claimed in claim 5, wherein the at least one blood vessel or the ROI of the at least one blood vessel is ascertained manually in order to determine the statistical average values of the principal components.
7. The method as claimed in claim 2, wherein, if a second threshold, which is higher than the first threshold, of the image values at the at least one blood vessel or the ROI of the at least one blood vessel is exceeded, the action triggered by the first threshold is stopped or not started.
8. The method as claimed in claim 2, wherein the at least one section plane is automatically based on a previously recorded topogram.
9. The method as claimed in claim 1, wherein CT representations, which have been recorded without contrast agent in a bloodstream, are used to determine the statistical average values of the principal components.
10. The method as claimed in claim 9, wherein the at least one blood vessel or the ROI of the at least one blood vessel is ascertained manually in order to determine the statistical average values of the principal components.
11. The method as claimed in claim 1, wherein CT representations, which have been recorded with contrast agent in a bloodstream, are used to determine the statistical average values of the principal components.
12. The method as claimed in claim 11, wherein the at least one blood vessel or the ROI of the at least one blood vessel is determined automatically in order to determine the statistical average values of the principal components.
13. The method as claimed in claim 1, wherein, if a second threshold, which is higher than the first threshold, of the image values at the at least one blood vessel or the ROI of the at least one blood vessel is exceeded, the action triggered by the first threshold is stopped or not started.
14. The method as claimed in claim 1, wherein the at least one section plane is automatically based on a previously recorded topogram.
15. A computed tomography (CT) system, comprising:
a scanner;
a contrast agent applicator; and
a computer system for control and image evaluation, including a memory containing computer programs to, when executed, carry out a method including:
providing statistical average values of principal components of a previous evaluation of a multiplicity of statistically comparable CT representations by,
determining a multi-dimensional position of distinctive points of anatomical structures including a multi-dimensional position of at least one blood vessel or an ROI for the at least one blood vessel,
carrying out a per CT representation principal component analysis, and
calculating the statistical average values of the principal components;

carrying out a multiplicity of chronologically progressive scans in at least one section plane;
progressively calculating CT representations for respective datum;
determining, for each CT representation, a multi-dimensional position of distinctive points of recognizable anatomical structures, except with regard to the at least one blood vessel or the ROI for the at least one blood vessel;
determining the principal components for each CT representation;
determining, for each CT representation, a deformation vector from the statistical average values of the principal components to the principal components;
determining, for each CT representation, and a transformation of the multi-dimensional position of the at least one blood vessel or the ROI for the at least one blood vessel;
determining a change in image values as a function of time in a region of the at least one blood vessel or the ROI of the at least one blood vessel over a multiplicity of the CT representations at respectively transformed positions of the at least one blood vessel or transformed ROI for the at least one blood vessel; and
when a first threshold of the image values is exceeded, at least one of outputting the image values in the region of the at least one blood
vessel or the ROI of the at least one blood vessel, and
triggering an action.
16. A non-transitory computer readable medium including program segments for, when executed on a computer device, causing the computer device to perform a method including:
providing statistical average values of principal components of a previous evaluation of a multiplicity of statistically comparable computed tomography (CT) representations by,
determining a multi-dimensional position of distinctive points of anatomical structures including a multi-dimensional position of at least one blood vessel or an ROI for the at least one blood vessel,
carrying out a per CT representation principal component analysis, and
calculating the statistical average values of the principal components;

carrying out a multiplicity of chronologically progressive scans in at least one section plane;
progressively calculating CT representations for the respective datum;
determining, for each CT representation, a multi-dimensional position of distinctive points of recognizable anatomical structures, with the exception of the at least one blood vessel or the ROI for the at least one blood vessel;
determining the principal components for each CT representation;
determining, for each CT representation, a deformation vector from the statistical average values of the principal components to the principal components;
determining, for each CT representation, a transformation of at least the multi-dimensional position of the at least one blood vessel or the ROI for the at least one blood vessel;
determining a change in the image values as a function of time in the region of the at least one blood vessel or the ROI of the at least one blood vessel over a multiplicity of the CT representations at the respectively transformed positions of the at least one blood vessel or the transformed ROI for the at least one blood vessel; and
when a first threshold of the image values is exceeded, at least one of
outputting the image values in the region of the at least one blood vessel or

the ROI of the at least one blood vessel, and
triggering an action.
17. The non-transitory computer readable medium of claim 16, wherein in addition to the positions of distinctive positions of recognizable anatomical structures, CT image values of at least one anatomical structure are also ascertained and processed in the principal component analysis.

The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.

1. An apparatus comprising:
at least one processor;
a memory coupled to the at least one processor;
a computer program residing in the memory, the computer program including a plurality of instructions that includes at least one vector instruction; and
a compiler residing in the memory and executed by the at least one processor, the compiler including a vector instruction optimization mechanism that eliminates at least one vector element reverse operation from the computer program to enhance run-time performance of the computer program.
2. The apparatus of claim 1 wherein the vector instruction optimization mechanism identifies a first vector element reverse operation and a second vector element reverse operation in the computer program, such that the result of the first vector element reverse operation is the source of the second vector element reverse operation, and eliminates at least one of the first and second vector element reverse operations.
3. The apparatus of claim 1 wherein the vector instruction optimization mechanism identifies a computation in the computer program where all operations performed on input vectors are single instruction multiple data (SIMD) instructions, and eliminates the at least one vector element reverse operation that corresponds to the computation.
4. The apparatus of claim 1 wherein the vector instruction optimization mechanism identifies a unary operation accompanied by at least one vector element reverse operation and changes order of instructions for the unary operation and the at least one vector element reverse operation.
5. The apparatus of claim 1 wherein the vector instruction optimization mechanism identifies a binary operation accompanied by at least one vector element reverse operation and eliminates the at least one vector element reverse operation that accompanies the binary operation.
6. The apparatus of claim 1 wherein the vector instruction optimization mechanism identifies a first instruction that specifies an endian load followed by a second instruction that performs a vector element reverse operation, and eliminates the second instruction by converting the first instruction into a third instruction that specifies an endian load that does not require the second instruction.
7. The apparatus of claim 1 wherein the vector instruction optimization mechanism identifies a first instruction that is a vector element reverse operation that precedes a second instruction that is an endian store, and eliminates the first instruction by converting the second instruction into a third instruction that specifies an endian store that does not require the first instruction.
8. The apparatus of claim 1 wherein the vector instruction optimization mechanism identifies a first instruction that specifies a vector load of a literal value followed by a second instruction that is a vector element reverse operation, and eliminates the second instruction by reversing order of the elements in the literal value in the first instruction.
9. The apparatus of claim 1 wherein the vector instruction optimization mechanism records characteristics of vector instructions and forms subgraphs of related instructions by analyzing def-use and use-def chains for the computer program in a first pass, determines whether any of the subgraphs cannot be optimized in a second pass, marks at least one vector element reverse operation for removal in a third pass, and deletes in a fourth pass the at least one vector element reverse operation marked for removal in the third pass.