1. A printer comprising:
a recording head that discharges ink to a predetermined position of a recording medium while being moved in a main scan direction relative to the recording medium on which an image is printed;
a recording-head moving unit that moves the recording head in the main scan direction;
a recording-medium moving unit that moves the recording medium in a auxiliary scan direction relative to the recording head; and
an encoder that measures at least one of the movement of the recording head and the movement of the recording medium,
wherein the encoder includes a scale having calibrations of which an interval is varied in one of a direction different from the movement direction of the recording head and the movement direction of the recording medium and a measuring portion that detects the calibrations, and
wherein the interval of the calibrations to be detected by the measuring portion is varied by relatively moving the scale and the measuring portion in one of a direction different from the movement direction of the recording head and the movement direction of the recording medium.
2. The printer according to claim 1,
wherein the scale is formed in a rectangular shape and the calibrations are formed to intersect the lengthwise axis direction of the scale, and
wherein the scale is disposed such that the lengthwise axis direction is parallel to the movement direction of the recording head or the movement direction of the recording medium.
3. The printer according to claim 1, wherein the interval of the calibrations is varied in one of a direction intersecting the movement direction of the recording head and the movement direction of the recording medium.
4. The printer according to claim 1, wherein the calibrations are formed out of a plurality of straight lines extending radially from a predetermined point outside the scale.
5. The printer according to claim 1,
wherein the measuring portion is attached to the recording head,
wherein the scale is attached to a belt that is wound around a pair of rollers rotatably disposed and extends in a direction approximately perpendicular to the movement direction of the recording head, and
wherein one roller is provided with a motor that drives the scale in the direction intersecting the movement direction of the recording head via the roller and the belt.
6. The printer according to claim 1,
wherein the scale is moved in the lengthwise axis direction by the recording-medium moving unit in synchronism with the movement of the recording medium,
wherein the measuring portion is attached to a belt that is wound around a pair of rollers rotatably disposed and extends in a direction intersecting the lengthwise axis direction, and
wherein one roller is provided with a motor that drives the measuring portion in the direction intersecting the lengthwise axis direction via the roller and the belt.
7. The printer according to claim 1, wherein variation of the calibration interval of the scale is performed by:
selecting a calibration interval after variation from a plurality of the calibration intervals of the scale and changing relative positions of the scale and the measuring portion such that the calibration interval measured by the encoder becomes the calibration interval after variation; and
changing a driving cycle of the recording head and an imaging speed of an image on the basis of the calibration interval after variation.
8. The printer according to claim 7,
wherein the recording medium is one of a lens sheet having a plurality of lenses arranged on one surface thereof and a print medium having convexities and concavities corresponding to the lenses, and
wherein the calibration interval after variation is selected on the basis of the number of parallax images and one of an arrangement cycle of the lenses and the convexities and concavities corresponding to the lenses.
9. The printer according to claim 7,
wherein the variation of the calibration interval to be measured by the encoder is performed by moving the scale in the main scan direction through control of driving the motor and thus changing the relative position between the scale and the measuring portion.
10. A printer comprising:
a recording head that discharges ink to a predetermined position of a recording medium while being moved in a main scan direction relative to the recording medium on which an image is printed;
recording-head moving means that moves the recording head in the main scan direction;
recording-medium moving means that moves the recording medium in a auxiliary scan direction relative to the recording head; and
an encoder that measures at least one of the movement of the recording head and the movement of the recording medium,
wherein the encoder includes a scale having calibrations of which an interval is varied in one of a direction different from the movement direction of the recording head and the movement direction of the recording medium and a measuring portion that detects the calibrations, and
wherein the interval of the calibrations to be detected by the measuring portion is varied by relatively moving the scale and the measuring portion in one of a direction different from the movement direction of the recording head and the movement direction of the recording medium.
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 memory apparatus for use with a host system, the memory apparatus comprising:
a plurality of memory circuits; and
an interface circuit including:
one or more first components of a first type, each of the one or more first components being electrically couplable to the host system; and
one or more second components of a second type different from the first type, each of the one or more second components being electrically couplable to the host system, the interface circuit being operable to present to the host system a simulated memory circuit where there is a difference in at least one aspect between the simulated memory circuit and at least one memory circuit of the plurality of memory circuits, the at least one aspect comprising a timing that relates to a refresh operation latency,
wherein each memory circuit of the plurality of memory circuits is electrically coupled to at least one first component of the one or more first components and to at least one second component of the one or more second components.
2. The memory apparatus of claim 1, where the first type of component is a register and the second type of component is a buffer chip.
3. The memory apparatus of claim 1, where at least one component of the first and second components is operable to receive control and clock signals intended for the simulated memory circuit.
4. The memory apparatus of claim 1, where at least one component of the first and second components is operable to receive data signals intended for the simulated memory circuit.
5. The memory apparatus of claim 1, where the plurality of memory circuits comprise a stack of dynamic random access memory (DRAM) circuits and are coupled to a dual inline memory module (DIMM).
6. The memory apparatus of claim 5, where the DIMM is a registered DIMM (R-DIMM).
7. The memory apparatus of claim 5, where the stack further includes the one or more second components of the second type.
8. The memory apparatus of claim 5, further comprising:
a first package including the one or more second components; and
a second separate package including the plurality of memory circuits.
9. The memory apparatus of claim 5, where the one or more second components are packaged together with the plurality of memory circuits in the stack.
10. The memory apparatus of claim 1, where at least one component of the first and second components is operable to refresh the plurality of physical memory circuits in response to receiving from the host system a first refresh control signal intended for the simulated memory circuit.
11. The memory apparatus of claim 10, where the at least one component of the first and second components is operable to receive the first refresh control signal intended for the simulated memory circuit from a memory controller of the host system.
12. The memory apparatus of claim 10, where the at least one component of the first and second components is operable to minimize a current draw of the plurality of memory circuits by issuing second refresh control signals at different times to one or more memory circuits of the plurality of memory circuits.
13. The memory apparatus of claim 10, where the at least one component of the first and second components is operable to issue a plurality of second refresh control signals to one or more memory circuits of the plurality of memory circuits in response to receiving the first refresh control signal intended for the simulated memory circuit.
14. The memory apparatus of claim 13, where the at least one component of the first and second components is operable to stagger the issuance of the plurality of second refresh control signals to the one or more memory circuits of the plurality of memory circuits.
15. The memory apparatus of claim 1, where the timing comprises one or more of a row address to column address latency (tRCD), a row precharge latency (tRP), an activate to precharge latency (tRAS), a row cycle time (tRC), a refresh latency (tRFC), or a column address strobe (CAS) latency.
16. The memory apparatus of claim 1, where the simulated memory circuit is associated with a first refresh operation latency and the plurality of memory circuits are associated with a second refresh operation latency, where the first refresh operation latency is longer than the second refresh operation latency.
17. The memory apparatus of claim 1, where the at least one aspect includes a signal associated with a mode register operation.
18. The memory apparatus of claim 1, where the at least one aspect includes a number of banks.
19. The memory apparatus of claim 1, where the difference in at least one aspect is a difference in a number of row-address signals.