1. An electronic circuit system, comprising:
a track hold circuit module structured by forming track hold circuits capable of tracking and holding an analog value of an analog signal into a hierarchical tree structure; and
a control signal generation module which supplies respective operation control signals to each of the track hold circuits in the hierarchical tree structure, wherein
the hierarchical tree structure is a structure in which the number of the track hold circuits in each of the hierarchies gradually increases as the hierarchy increases from a first hierarchy on an input side to which the analog signal is inputted towards a final hierarchy on a final output side.
2. The electronic circuit system as claimed in claim 1, wherein
the control signal generation module includes:
a first control function which controls the operation control signals in such a manner that each of the track hold circuits in each of the hierarchies operate at different frequencies; and
a second control function which controls the operation control signals in such a manner that each of the track hold circuits within the hierarchy operate in a time interleave manner.
3. The electronic circuit system as claimed in claim 2, wherein
the first control function has a functional content of controlling the operation control signals to decrease the frequencies in order as the hierarchy increases from the first hierarchy towards the final hierarchy.
4. The electronic circuit system as claimed in claim 3, wherein
the hierarchical tree structure is a structure in which there are at least two branched track hold circuits in the first hierarchy, and the number of the track hold circuits gradually increases in each of the hierarchies thereafter.
5. A track hold circuit module having a hierarchical tree structure formed by using track hold circuits capable of tracking and holding an analog value of an analog signal, wherein
the hierarchical tree structure is a structure in which the number of the track hold circuits in each of the hierarchies gradually increases as the hierarchy increases from a first hierarchy on an input side to which the analog signal is inputted towards a final hierarchy on a final output side.
6. The electronic circuit module as claimed in claim 5, wherein
the hierarchical tree structure is a structure in which there are at least two branched track hold circuits in the first hierarchy, and the number of the track hold circuits gradually increases in each of the hierarchies thereafter.
7. An electronic circuit operation control method for controlling an operation of each track hold circuit employed in an electronic circuit system which comprises a track hold circuit module structure by forming the track hold circuits capable of tracking and holding an analog value of an analog signal into a hierarchical tree structure, and a control signal generation module which supplies respective operation control signals to each of the track hold circuits in the hierarchical tree structure, the method comprising:
inputting the analog signal from a first hierarchy on an input side in the hierarchical tree structure;
controlling to set each frequency of respective operation control signals supplied to each of the track hold circuits for respectively operating each of the track hold circuits, the number of which changes gradually as the hierarchy increases towards a final hierarchy on a final output side of the hierarchical tree structure, at different frequencies in each of the hierarchies;
controlling to generate each of the operation control signals according to the number for operating each of the track hold circuits within the hierarchy in a time interleave manner; and
outputting each analog value from each output terminal of each of the track hold circuits of the final hierarchy of the hierarchical tree structure.
8. The electronic circuit operation control method as claimed in claim 7, wherein
when controlling to set each of the frequencies, the frequencies are set to be decreased in order as the hierarchy increases from the first hierarchy towards the final hierarchy.
9. The electronic circuit operation control method as claimed in claim 8, wherein:
the hierarchical tree structure is a structure in which there are at least two branched track hold circuits in the first hierarchy, and the number of the track hold circuits gradually increases in each of the hierarchies thereafter;
when controlling to set each of the frequencies, the frequencies are set according to the hierarchical tree structure, and the frequency is changed from a full rate also in the first hierarchy; and
when controlling to generate each of the operation control signals, the operation control signals are generated according to the hierarchical tree structure, and each of the operation control signals are generated for operating each of the track hold circuits in a time interleave manner also in the first hierarchy.
10. A non-transitory computer readable recording medium storing an electronic circuit operation control program for causing a computer, which constitutes a control signal generation module of an electronic circuit system which comprises a track hold circuit module structured by forming track hold circuits capable of tracking and holding an analog value of an analog signal into a hierarchical tree structure and the control signal generation module which supplies respective operation control signals to each of the track hold circuits in the hierarchical tree structure, to execute:
a first control function which controls to set each frequency of operation control signals supplied to each of the track hold circuits for respectively operating each of the track hold circuits, the number of which changes gradually as the hierarchy increases towards a final hierarchy on a final output side of the hierarchical tree structure, at different frequencies in each of the hierarchies; and
a second control function which controls to generate each of the operation control signals according to the number for operating each of the track hold circuits within the hierarchy in a time interleave manner.
11. The non-transitory computer readable recording medium storing the electronic circuit operation control program as claimed in claim 10, which causes the computer to execute a function which controls to set the frequencies to be decreased in order as the hierarchy increases from the first hierarchy towards the final hierarchy.
12. The non-transitory computer readable recording medium storing the electronic circuit operation control program as claimed in claim 11, wherein
the hierarchical tree structure is a structure in which there are at least two branched track hold circuits in the first hierarchy, and the number of the track hold circuits gradually increases in each of the hierarchies thereafter, the program causing the computer to execute:
a function which controls to set the frequencies according to the hierarchical tree structure, and to change the frequency from a full rate also in the first hierarchy; and
a function which controls to generate the operation control signals according to the hierarchical tree structure, and to generate each of the operation control signals for operating each of the track hold circuits in a time interleave manner also in the first hierarchy.
13. An electronic circuit system, comprising:
a track hold circuit module structured by forming track hold circuits capable of tracking and holding an analog value of an analog signal into a hierarchical tree structure; and
control signal generation means for supplying respective operation control signals to each of the track hold circuits in the hierarchical tree structure, wherein
the hierarchical tree structure is a structure in which the number of the track hold circuits in each of the hierarchies gradually increases as the hierarchy increases from a first hierarchy on an input side to which the analog signal is inputted towards a final hierarchy on a final output side.
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:
a compartment within a portable computing device, the compartment including an opening;
a fan found in the compartment positioned to rotate one or blades around an axis, wherein the one or more blades spin in a direction substantially towards an opening during at least one point during the spinning; and
a speaker included in the compartment configured to generate sound waves,
wherein the compartment has a shape that facilitates air flow out of the device away from the fan where both hot air and sound waves flow out of the portable device.
2. The apparatus of claim 1 further comprising a heat dissipating element configured to direct heat towards the fan, wherein the fan dissipates the heat through the opening.
3. The apparatus of claim 2, wherein the heat dissipating element, dissipating heat into the compartment, is located near the fan.
4. The apparatus of claim 2, wherein the compartment allows hot air to flow away from the heat dissipating element.
5. The apparatus of claim 1, wherein the opening is on a side surface of the compartment.
6. The apparatus of claim 1, wherein the compartment is used as a resonance chamber for the speaker.
7. The apparatus of claim 6, wherein the resonance path is extended through the fan into the compartment for lower frequency response.
8. The apparatus of claim 1, wherein the speaker is positioned between the fan and the opening.
9. The apparatus of claim 1, wherein the blades rotating around the axis perpendicular to the top surface and the bottom surface of the device.
10. The apparatus of claim 9, wherein the rotation of the one or more blades directs air flow towards the opening of the compartment.
11. The apparatus of claim 1, wherein the speaker moves up or down between the top surface and the bottom surface of the device.
12. The apparatus of claim 1, wherein the speaker is positioned out of the air flow.
13. The apparatus of claim 1, wherein the speaker is included as a part of the wall of the compartment.
14. The apparatus of claim 1, wherein the apparatus has substantially of length 4 inches, width 3 inches, and height \xbe inches.
15. A portable device comprising:
a compartment, the compartment including an opening;
a fan found in the compartment positioned to rotate one or blades around an axis, wherein the one or more blades spin in a direction substantially towards an opening during at least one point during the spinning; and
a speaker included in the compartment configured to generate sound waves,
wherein the compartment has a shape that facilitates air flow out of the device away from the fan where both hot air and sound waves flow out of the portable device.
16. The apparatus of claim 15, wherein the apparatus comprises a hand-held computer, laptop computer, personal computer, personal digital assistant (PDA), cellular telephone, movie camera, movie player, mobile computer, andor pocket PC.
17. The apparatus of claim 15, wherein the portable device has substantially of length 4 inches, width 3 inches, and height \xbe inches.
18. The apparatus of claim 15, wherein an axis of rotation of the fan is substantially perpendicular to a top and a bottom surface of the compartment.
19. The apparatus of claim 15, wherein the diaphragm of speaker vibrates in a direction perpendicular to a top and a bottom surface of the compartment.
20. The apparatus of claim 15, wherein the air flows over the diaphragm of the speaker out through the opening.
21. The apparatus of claim 15, further comprising a heat dissipating element, the heat dissipating element for dissipating the heat from the portable computing device into the compartment.
22. The apparatus of claim 15, wherein the heat dissipating element dissipates heat from a processor.
23. The apparatus of claim 20, wherein the heat dissipating element in the speaker-fan compartment is at least one of heat pipe, heat sink, and radiator.