JP2008204388A - Optical mouse - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical mouse which has a pulse wave measurement function mounted thereon to enable a user to easily recognize his or her own biological information in everyday life. <P>SOLUTION: The optical mouse includes a light emitting part 1 and an image sensor (light receiving part) 2 corresponding to the light emitting part 1, and the optical mouse is provided with a detection processing means which collectively reads signal electric charges in all or a prescribed part of light receiving elements composing the light receiving part 2 to detect a pulse wave on the basis of the collectively read signal electric charges when detecting reflected light from a fingertip 5 by the light receiving part 2. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an optical mouse provided with a light emitting part and a light receiving part (image sensor), and more particularly to an optical mouse equipped with a function of pulse wave measurement.

Conventionally, in the field of medical equipment, a living body measuring apparatus capable of measuring a human pulse wave has been known. This living body measurement apparatus includes a light emitting unit and a light receiving unit, and measures the pulse wave as follows.
Light from the light emitting part is irradiated onto the capillary blood vessel in a thin part of human skin, and red blood cells (hemoglobin) in the blood vessel are absorbed, reflected, and transmitted in response to the irradiated light. For this reason, by receiving the reflected light at the light receiving unit, a waveform (pulse wave) corresponding to the cardiac myocardial motion can be monitored, and the pulse rate and blood vessel age are calculated from the monitor waveform by a calculation formula.

Further, by receiving the transmitted light at the light receiving unit, the waveform corresponding to the cardiac myocardial motion can be monitored, and the pulse rate and the blood oxygen saturation concentration are calculated by the calculation formula from the monitor waveform.
On the other hand, conventionally, as an optical mouse, for example, a scanner function is installed, information such as documents and business cards captured as image information is recognized as character information, and is handled in the same way as character information input from an input device such as a keyboard. There is a known one (see Patent Document 1).
JP-A-2005-78515

However, since the conventional biological measurement apparatus is a medical device and is owned by a doctor's office or a hospital, it has a problem that it cannot be carried, is not portable, and cannot be measured in real time in daily life.
Moreover, since it is a medical device, it is expensive and not widely used in ordinary households, and cannot be used for preventing health management in daily life. Furthermore, it cannot be used easily in daily life to recognize its own biological information.

On the other hand, the optical mouse includes a light emitting unit and a light receiving unit (image sensor) as in the case of the living body measurement device, and has become widespread as an input device with the spread of personal computers. For this reason, it is considered that the above-mentioned problems can be solved at once by installing a pulse wave measurement function in an optical mouse.
Accordingly, an object of the present invention is to provide an optical mouse in which a pulse wave measurement function is mounted on an optical mouse so that self-biological information in daily life can be easily recognized.

In order to solve the above problems and achieve the object of the present invention, each invention has the following configuration.
1st invention is an optical mouse provided with the light emission part and the light-receiving part corresponding to this, Comprising: When the reflected light from a fingertip is detected by the said light-receiving part, all the light reception which comprises the said light-receiving part Detection processing means for collectively reading out signal charges of the element or a predetermined part of the light receiving elements is provided.

A second invention is an optical mouse comprising a light emitting part and a light receiving part corresponding to the light emitting part, wherein the light from the light emitting part is transmitted by a fingertip and the transmitted light is detected by the light receiving part. And a detection processing means for collectively reading out signal charges of all light receiving elements or a predetermined part of the light receiving elements constituting the light receiving unit when the light receiving unit detects the transmitted light. Have.
According to a third invention, in the first or second invention, the detection processing means further detects a pulse wave based on the signal charges read in a batch.

  A fourth invention is an optical mouse comprising a light emitting part and a light receiving part corresponding to the light emitting part, and a selection means for selecting the position of each light receiving element constituting the light receiving part; When the mouse mode is selected, the signal reading means for reading the signal charge from the received light receiving element, and the selection means sequentially selects each light receiving element of the light receiving unit, and the signal reading means selects the selected light receiving element. When the pulse wave measurement mode is selected, the selection unit selects all the light receiving elements of the light receiving unit or a part of the light receiving elements, and the signal reading unit is selected. Control means for controlling each of the selection means and the signal reading means so as to read out signal charges of the light receiving elements in a lump.

  5th invention is an optical mouse provided with the light emission part and the light-receiving part corresponding to this, Comprising: The structure which permeate | transmits the light from the said light emission part with a fingertip, and detects this transmitted light with the said light-receiving part. And a selection means for selecting the position of each light receiving element constituting the light receiving unit, a signal reading means for reading signal charges from the light receiving element selected by the selection means, and a mouse mode are selected. When the selection means sequentially selects each light receiving element of the light receiving unit, the signal reading means sequentially reads the signal charge of the selected light receiving element, and when the pulse wave measurement mode is selected, the selection means Select all of the light receiving elements in the light receiving section or a part of the light receiving elements, and select the signal so that the signal reading means collectively reads the signal charges of the selected light receiving elements. Fine said signal reading means includes a control means for controlling each of the.

  According to a sixth invention, in the fourth or fifth invention, when the mouse mode is selected, the first signal processing for calculating the moving distance and the position of the mouse based on the signal charges read by the signal reading means, respectively. And a second signal processing means for measuring the pulse wave based on the signal charge read by the signal reading means when the pulse wave measurement mode is selected.

A seventh invention further includes a mode selection switch for selecting one of the mouse mode and the pulse wave measurement mode in the fourth to sixth inventions.
As described above, according to the present invention, the function of pulse wave measurement is mounted on a conventional optical mouse. For this reason, according to the present invention, since it can be produced at low cost and can be widely used in ordinary households, it is possible to easily recognize its own biological information in daily life.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
The first embodiment of the present invention is an optical mouse using an optical reflection sensor. When the mouse mode (mouse function) is selected, the reflected light from the mouse pad is detected as in the conventional case. Detecting the moving direction and position of the mouse. On the other hand, when the pulse wave measurement mode (pulse wave measurement function) is selected, the pulse wave is measured by detecting the reflected light from the fingertip.

FIG. 1 is a schematic cross-sectional view showing a structural example of a portion of the optical reflection sensor according to the first embodiment of the present invention. FIG. 2 is a block diagram showing the configuration of the first embodiment.
As shown in FIG. 1, the optical reflection sensor according to the first embodiment includes a light emitting unit 1 made of a light emitting diode, a two-dimensional image sensor 2 as a light receiving unit, and a lens / prism 3. Are arranged at predetermined positions on the mouse body 4. Light from the light emitting unit 1 is guided and reflected by the lens / prism 3 to the surface of a mouse pad (not shown) or the fingertip 5, and the reflected light is received by the image sensor 2.

As shown in FIG. 2, the first embodiment includes an image sensor 2, a horizontal scanning circuit 11, a vertical scanning circuit 12, a signal readout circuit 13, a control circuit 14, a first signal processing circuit 15, A second signal processing circuit 16 and a mode selection switch 17 are provided.
The image sensor 2 includes a CCD image sensor, a CMOS image sensor, or the like. For example, n × n light receiving elements are arranged in a matrix (vertical and horizontal). Each light receiving element converts incident light into a signal charge, and takes out the signal charge to the outside as will be described later.

  The horizontal scanning circuit 11 and the vertical scanning circuit 12 select n × n light receiving elements that constitute the image sensor 2. When the mouse mode is selected by the mode selection switch 17, one of the n × n light receiving elements is sequentially selected. Further, when the pulse wave measurement mode is selected by the mode selection switch 17, all of the n × n light receiving elements are selected at once (at a time), or some of them are selected at once. is there.

Therefore, the horizontal scanning circuit 11 generates signals Q0x to Qnx based on the signals S0x to Snx from the control circuit 14 and the like. Further, the vertical scanning circuit 12 generates signals Q0y to Qny based on signals S0y to Sny from the control circuit 14 and the like. Then, the above selection is performed based on these generated signals.
The signal readout circuit 13 reads out the signal charge of the light receiving element selected (designated) by the horizontal scanning circuit 11 and the vertical scanning circuit 12.

  When the mouse mode is selected by the mode selection switch 17, the signal readout circuit 13 sequentially reads out the signal charges from the respective light receiving elements of the image sensor 2, and the first circuit (not shown) reads the read signal. The electric charge is sequentially converted into a voltage and supplied to the first signal processing circuit 15. Further, when the pulse wave measurement mode is selected by the mode selection switch 17, the signal readout circuit 13 reads out the signal charges from all the light receiving elements of the image sensor 2 at a time (at a time), and the second circuit ( The signal charges collectively read out are converted into voltages and supplied to the second signal processing circuit 16 (not shown).

Therefore, the signal readout circuit 13 includes a first circuit used in the mouse mode and a second circuit used in the pulse wave measurement mode. Both of these circuits are controlled (selected) by the control circuit 14. ).
The control circuit 14 controls the horizontal scanning circuit 11, the vertical scanning circuit 12, and the signal readout circuit 13 as described above in accordance with the mouse mode or pulse wave measurement mode selected by the mode selection switch 17.

The first signal processing circuit 15 detects the moving direction and the position of the mouse based on the signal from the signal reading circuit 13. The second signal processing circuit 16 detects a pulse wave based on the signal from the signal readout circuit 13, and calculates various biological information such as a pulse rate and a blood vessel age by the detection.
The mode selection switch 17 is used by the user to select either the mouse mode or the pulse wave measurement mode. The selected mode is input to the control circuit 14, and the control circuit 14 controls each unit according to the mode.

Next, the operation of the first embodiment having such a configuration will be described with reference to FIG. 1 and FIG.
First, the case where the user selects the mouse mode with the mode selection switch will be described. In this case, the image sensor 2 receives reflected light from a mouse pad (not shown).

  The horizontal scanning circuit 11 and the vertical scanning circuit 12 sequentially select one of n × n light receiving elements of the image sensor 2. The signal readout circuit 13 sequentially reads out the signal charges from the selected light receiving elements, and the first signal processing circuit 15 converts the read out signal charges into a voltage by a first circuit (not shown). To supply. The first signal processing circuit 15 detects the moving direction and the position of the mouse based on the signal from the signal reading circuit 13.

Next, the case where the user selects the pulse wave measurement mode with the mode selection switch will be described. In this case, since the user places his / her fingertip 5 as shown in FIG. 1, the image sensor 2 receives the reflected light from the surface of the fingertip.
The horizontal scanning circuit 11 and the vertical scanning circuit 12 select all n × n light receiving elements of the image sensor 2 at a time. Further, the signal readout circuit 13 reads out the signal charges from all the light receiving elements at once, and the second circuit (not shown) converts the signal charges read out at the same time into a voltage to perform second signal processing. Supply to circuit 16. The second signal processing circuit 16 detects a pulse wave based on the signal from the signal readout circuit 13, and calculates various biological information such as a pulse rate and a blood vessel age by the detection.

Next, specific examples of the horizontal scanning circuit 11 and the vertical scanning circuit 12 shown in FIG. 2 will be described with reference to FIG. Here, since the horizontal scanning circuit 11 and the vertical scanning circuit 12 can be configured by the same circuit, an example of the horizontal scanning circuit 11a will be described with reference to FIG.
The horizontal scanning circuit 11a is composed of (n + 1) D-type flip-flops 21 and the like. The horizontal scanning circuit 11a functions as a shift register when the mouse mode is selected, and nxn pieces of the image sensor 2 are received by signals Q0 to Qn. Select one of the light receiving elements. Further, when the pulse wave measurement mode is selected, it does not function as a shift register, and all n × n light receiving elements of the image sensor 2 are selected at once by signals Q0 to Qn.

  Therefore, the horizontal scanning circuit 11a includes (n + 1) D-type flip-flops 21, two-input OR gates 22 and 23 arranged on the input side of the first-stage D-type flip-flop 21, and the first-stage A 2-input AND gate 24 with an inverting function and a normal 2-input OR gate 25 are provided on the output side of the D-type flip-flop 21 in the (n + 1) th stage. The horizontal scanning circuit 11a is operated by a reset signal Reset, a clock Clock, and a pulse wave measurement signal AH supplied from the control circuit 14, and generates signals Q0 to Qn.

Next, the operation of the horizontal scanning circuit 11a having such a configuration will be described with reference to FIG.
As shown in FIG. 4, in the period T1 in which the mouse mode is selected, the output signals Q0 to Qn of the D-type flip-flop 21 are signals that are shifted to the right by the clock Clock. For this reason, each of the n × n light receiving elements of the image sensor 2 can be selected, whereby the signal readout circuit 13 can read and process the signal charge for each light receiving element.

  On the other hand, in the period T2 in which the pulse wave measurement mode is selected, the pulse wave measurement signal AH is at the “H” level, so that the output signals Q0 to Qn of the D-type flip-flop 21 are not operated by the clock Clock. It becomes a signal of “H” level similar to the pulse wave measurement signal AH. For this reason, all of the n × n light receiving elements of the image sensor 2 are selected at a time, whereby the signal readout circuit 13 can collectively read and process the signal charges of all the light receiving elements. it can.

Next, another example of the horizontal scanning circuit 11a shown in FIG. 3 will be described with reference to FIG.
The horizontal scanning circuit 11b shown in FIG. 5 is (n + 1) MOS transistors 31 that are ON / OFF controlled by signals S0 to Sn, and connected in parallel to the MOS transistor 31 and ON / OFF controlled by a pulse wave measurement signal AH. And (n + 1) MOS transistors 32. The output signals Q0 to Qn are output from one end of each MOS transistor 31.
Although not shown, the horizontal scanning circuit 11b includes a counter and a gate circuit for generating the signals S0 to Sn.

Next, the operation of the horizontal scanning circuit 11b having such a configuration will be described with reference to FIG.
As shown in FIG. 6, in the period T1 in which the mouse mode is selected, the MOS transistors 31 are sequentially turned on by signals S0 to Sn, so that the MOS transistor 31 output signals Q0 to Qn are sequentially H level signals. . For this reason, one of the n × n light receiving elements of the image sensor 2 is selected one by one, whereby the signal reading circuit 13 can read and process the signal charge for each light receiving element.

  On the other hand, in the period T2 in which the pulse wave measurement mode is selected, the pulse wave measurement signal AH is at the “H” level, and the MOS transistor 31 is simultaneously turned on by the pulse wave measurement signal AH. Q0 to Qn are “H” level signals similar to the pulse wave measurement signal AH. For this reason, all of the n × n light receiving elements of the image sensor 2 are selected, so that the signal readout circuit 13 can collectively read and process the signal charges of all the light receiving elements.

Next, another specific example of the horizontal scanning circuit 11 and the vertical scanning circuit 12 shown in FIG. 2 will be described with reference to FIG. Here, since the horizontal scanning circuit 11 and the vertical scanning circuit 12 can be configured by the same circuit, an example of the horizontal scanning circuit 11c will be described in FIG.
The horizontal scanning circuit 11c is composed of (n + 1) D-type flip-flops 21 and the like, and functions as a shift register when the mouse mode is selected. By the signals Q0 to Qn, n × n pieces of the image sensor 2 are used. Select one of the light receiving elements. Further, when the pulse wave measurement mode is selected, it does not function as a shift register, and several lines of n × n light receiving elements of the image sensor 2 are selected by signals Q0 to Qn.

The horizontal scanning circuit 11c is configured in this way for the following reason. That is, in the horizontal scanning circuit 11c shown in FIG. 3, when the pulse wave measurement mode is selected, the signal readout circuit 13 reads out the signal charges of all the light receiving elements at once, but converts them at this time. There is a possibility that the voltage signal obtained in this way exceeds the processing capability that can be A / D converted later by the A / D converter. Therefore, the signal readout circuit 13 can collectively read and process the signal charges of the light receiving elements for several lines.
Therefore, the horizontal scanning circuit 11c is basically configured in the same manner as the horizontal scanning circuit 11a shown in FIG. 3, but the difference in configuration is shown in FIG. 7 instead of the pulse wave measurement signal AH in FIG. As shown, a plurality of pulse wave measurement signals AH1 to AHm are used.

Next, the operation of the horizontal scanning circuit 11c having such a configuration will be described with reference to FIG.
As shown in FIG. 8, in the period T1 in which the mouse mode is selected, the output signals Q0 to Qn of the D-type flip-flop 21 are signals that are shifted to the right by the clock Clock. For this reason, the n × n light receiving elements of the image sensor 2 are selected one by one, whereby the signal readout circuit 13 can read and process the signal charge for each light receiving element.
On the other hand, in the period T2 in which the pulse wave measurement mode is selected, the pulse wave measurement signals AH1 to AHm are set to the “H” level, and the output signals Q0 to Qn of the D-type flip-flop 21 are not operated by the clock Clock. The signal corresponds to the pulse wave measurement signals AH1 to AHm. For this reason, the image sensor 2 is selected in units of two lines out of the n × n light receiving elements, so that the signal readout circuit 13 reads the signal charges collectively for every two lines of the light receiving elements and performs batch processing. it can.

Next, another example of the horizontal scanning circuit 11c shown in FIG. 7 will be described with reference to FIG.
In the horizontal scanning circuit 11d shown in FIG. 9, when the mouse mode is selected, the MOS transistors 31 are sequentially turned on by signals S0 to Sn, and each of the n × n light receiving elements of the image sensor 2 is turned on. select. When the pulse wave measurement mode is selected, the MOS transistor 31 is turned on in a plurality of units according to the pulse wave measurement signals AH1 to AHm, and a plurality of lines among the n × n light receiving elements of the image sensor 2 are used. A unit is selected (2 lines in this example).
For this purpose, the horizontal scanning circuit 11d is basically configured in the same manner as the horizontal scanning circuit 11c shown in FIG. 5, but the difference in configuration is shown in FIG. 9 instead of the pulse wave measurement signal AH in FIG. As shown, a plurality of pulse wave measurement signals AH1 to AHm are used.

Next, the operation of the horizontal scanning circuit 11d having such a configuration will be described with reference to FIG.
As shown in FIG. 10, in the period T1 in which the mouse mode is selected, the MOS transistors 31 are sequentially turned on by signals S0 to Sn, so that the MOS transistor 31 output signals Q0 to Qn are sequentially H level signals. . For this reason, one of the n × n light receiving elements of the image sensor 2 is selected one by one, whereby the signal reading circuit 13 can read and process the signal charge for each light receiving element.

  On the other hand, during the period T2 in which the pulse wave measurement mode is selected, the pulse wave measurement signals AH1 to AHm sequentially become “H” level, so that the MOS transistor 31 output signals Q0 to Qn are the pulse wave measurement signals AH1 to AH1. The signal corresponds to AHm. For this reason, selection is made in units of two lines among the n × n light receiving elements of the image sensor 2, whereby the signal readout circuit 13 reads out the signal charges in batches for every two lines of the light receiving elements. It can be processed.

  As described above, in the first embodiment, the pulse wave measurement function is mounted on the optical mouse, and when the pulse wave measurement function is selected, the pulse wave can be measured using the fingertip. For this reason, according to the first embodiment, since it can be produced at low cost and can be spread to ordinary households, various biological information based on the pulse wave, such as pulse rate and blood vessel age, can be easily used in daily life. Become able to recognize.

More specifically, since the optical mouse according to the first embodiment is an input device indispensable for a personal computer, anyone can easily check his / her biological information at any time and anywhere. For this reason, for example, it is possible to confirm in real time the stoppage of pulse wave fluctuation, which is a harbinger of sudden death, and the contraction of blood vessels due to excessive stress, which can be used for the prevention thereof.
Further, since there are individual differences in the pulse wave shape, the measured biological information can also be used for security of a personal computer.

(Second Embodiment)
The second embodiment of the present invention is an optical mouse equipped with an optical sensor. When the mouse mode is selected, the mouse movement is detected by detecting the reflected light from the mouse pad as in the prior art. The direction and its position were detected. On the other hand, when the pulse wave measurement mode is selected, the pulse wave is measured by detecting the transmitted light from the fingertip.

Therefore, in the second embodiment of the present invention, the structure of the optical reflection sensor (see FIG. 1) in the first embodiment is replaced with the structure of the optical sensor as shown in FIG.
In the optical sensor of the second embodiment, as shown in FIG. 11, a light emitting unit 1 and an image sensor 2 that is a light receiving unit corresponding to the light emitting unit 1 are mounted on a mouse body 4. A concave portion 8 having an opening 7 is formed on the lower surface side of the mouse body 4, and the internal shape of the concave portion 8 corresponds to the shape of the fingertip. That is, the recess 8 is configured such that the fingertip 5 can be inserted into the recess 8 from the opening 7.

  When the mouse mode is selected, the light from the light emitting unit 1 is reflected by the mouse pad, and the reflected light can be detected by the image sensor 2 (see the broken line in FIG. 11). On the other hand, when the pulse wave measurement mode is selected, the fingertip is inserted into the recess 8 so that the light from the light emitting unit 1 is transmitted through the fingertip and the transmitted light can be detected by the image sensor 2. (See the solid line in FIG. 11).

In the second embodiment, the signal processing configuration other than the structure of the optical sensor shown in FIG. 11 is basically the same as the signal processing configuration of the first embodiment. I will omit it.
According to 2nd Embodiment described above, the effect similar to 1st Embodiment is realizable.

(Other)
In the above-described embodiment, the case where the number of light receiving elements of the image sensor is (n × n) has been described. However, the present invention can be implemented even in the case of (n × m) or (n × n + x). It is.

It is a schematic sectional drawing which shows the structural example of the optical reflection sensor part of 1st Embodiment of this invention. It is a block diagram which shows the structure of 1st Embodiment. FIG. 2 is a circuit diagram showing a specific example of the horizontal scanning circuit shown in FIG. 1. It is a wave form diagram which shows the waveform of each part of the horizontal scanning circuit. FIG. 4 is a circuit diagram showing another specific example of the horizontal scanning circuit shown in FIG. 3. It is a wave form diagram which shows the waveform of each part of the horizontal scanning circuit. FIG. 6 is a circuit diagram showing another specific example of the horizontal scanning circuit shown in FIG. 1. It is a wave form diagram which shows the waveform of each part of the horizontal scanning circuit. FIG. 8 is a circuit diagram showing another specific example of the horizontal scanning circuit shown in FIG. 7. It is a wave form diagram which shows the waveform of each part of the horizontal scanning circuit. It is a schematic sectional drawing which shows the structural example of the optical sensor part of 2nd Embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Light emission part, 2 ... Image sensor, 4 ... Mouse body, 5 ... Finger tip, 8 ... Recessed part, 11, 11a-11d ... Horizontal scanning circuit, 12 ... Vertical Scanning circuit, 13 ... signal readout circuit, 14 ... control circuit, 15 ... first signal processing circuit, 16 ... second signal processing circuit, 17 ... mode selection switch

Claims (7)

An optical mouse having a light emitting part and a light receiving part corresponding to the light emitting part,
A detection processing means for collectively reading out signal charges of all light receiving elements constituting the light receiving unit or a predetermined part of the light receiving elements when detecting light reflected from a fingertip by the light receiving unit;
An optical mouse characterized by comprising. An optical mouse having a light emitting part and a light receiving part corresponding to the light emitting part,
The light from the light emitting unit is transmitted through the fingertip, and a configuration for detecting the transmitted light by the light receiving unit is provided.
And, when the light receiving unit detects the transmitted light, detection processing means for collectively reading signal charges of all the light receiving elements constituting the light receiving unit or a predetermined part of the light receiving elements,
An optical mouse characterized by comprising.   The optical mouse according to claim 1, wherein the detection processing unit further detects a pulse wave based on the signal charges read in a batch. An optical mouse having a light emitting part and a light receiving part corresponding to the light emitting part,
Selecting means for selecting the position of each light receiving element constituting the light receiving unit;
Signal readout means for reading out signal charges from the light receiving elements selected by the selection means;
When the mouse mode is selected, the selecting unit sequentially selects each light receiving element of the light receiving unit, the signal reading unit sequentially reads the signal charge of the selected light receiving element, and the pulse wave measurement mode is selected. The selecting means selects all the light receiving elements of the light receiving section or a part of the light receiving elements, and the signal reading means reads the signal charges of the selected light receiving elements in a batch. Control means for respectively controlling the selection means and the signal reading means;
An optical mouse characterized by comprising: An optical mouse having a light emitting part and a light receiving part corresponding to the light emitting part,
While providing a configuration for transmitting light from the light emitting unit with a fingertip and detecting the transmitted light with the light receiving unit,
Selecting means for selecting the position of each light receiving element constituting the light receiving unit;
Signal readout means for reading out signal charges from the light receiving elements selected by the selection means;
When the mouse mode is selected, the selecting unit sequentially selects each light receiving element of the light receiving unit, the signal reading unit sequentially reads the signal charge of the selected light receiving element, and the pulse wave measurement mode is selected. The selecting means selects all the light receiving elements of the light receiving section or a part of the light receiving elements, and the signal reading means reads the signal charges of the selected light receiving elements in a batch. Control means for respectively controlling the selection means and the signal reading means;
An optical mouse characterized by comprising: First signal processing means for calculating the movement distance and position of the mouse based on the signal charges read by the signal reading means when the mouse mode is selected;
When the pulse wave measurement mode is selected, second signal processing means for measuring the pulse wave based on the signal charge read by the signal reading means;
The optical mouse according to claim 4 or 5, further comprising:   The optical mouse according to any one of claims 4 to 6, further comprising a mode selection switch for selecting one of the mouse mode and the pulse wave measurement mode.

Images