摘要:
A photometry device having a first and a second imaging device, a control mechanism and a photometry measurement mechanism. The first and second imaging devices include light-sensitive elements which are sensitive to complementary colors dispose thereon in a 2.times.2 matrix. The control mechanism controls the first and second imaging devices to construct luminance signals in accordance with the output signals of the first and second imaging devices. The photometry measurement mechanism carries out photometry measurement in accordance with the luminance signals constructed by the control mechanism.
摘要:
An exposure controlling apparatus is provided for an electronic still camera using an imaging device such as a CCD, and controls exposure with high accuracy even if a low-accuracy external photometric device or a low-accuracy diaphragm mechanism is used. The apparatus comprises a first photometric component for metering the brightness of a subject and outputting a first photometric value, an automatic setting component for automatically setting either an aperture value or a shutter speed, depending on the first photometric value, an imaging device having matrix light receiving elements for effecting photoelectric conversion, and an electronic shutter for controlling charge accumulation time, depending on the set shutter speed. A diaphragm component adjusts a bundle of incident rays on a light receiving surface of the imagining device so a set aperture value will be attained, and a second photometric device effects the preliminary photography at an aperture value and shutter speed set by controlling the electronic shutter and the diaphragm component. The total amount of charge accumulated in all, or a predetermined number, of the light receiving elements of the imagining device are detected, and a second photometric value has an output proportional to the total amount of charge. A shutter speed correcting device is provided for correcting exposure error.
摘要:
An encoded symbol reader for reading and decoding an image of an encoded symbol is capable of operating in three modes and has a CCD, a display, and a light source. In each mode, the reading of an encoded symbol is initiated by a trigger switch. In the first mode, the CCD, display and light source are continuously driven and remain in an ON state. In the second mode, the CCD, display and light source are turned OFF when a decoding operation is completed after the trigger switch is released. In the third mode, the CCD, display, light source are turned OFF after a predetermined period has elapsed after the decoding operation is completed and the trigger switch is released. While operating in the third mode, during the predetermined interval, the re-reading of another symbol can be immediately executed without having to wait for the components to warm up.
摘要:
A communication cable used to connect a peripheral device to a computer has a first cable, a second cable and a patch unit. The first cable encloses a set of power lines and a set of data lines, and the second cable encloses a set of data lines. The patch unit includes a socket with first and second contacts. In the patch unit, the sets of data lines of the first and second cables are connected. One of the power lines is connected to the first contact, and another of the power lines is connected to the second contact. The first cable connects the patch unit with the peripheral device, and the second cable connects the patch unit with the computer. When power is applied from an external source to the first and second contacts, the power is supplied from the first and second contacts to the peripheral device.
摘要:
A luminance signal generating device having two CCDs on which complementary color filters are provided. Each color filter includes a matrix arrangement in which color filter elements for passing magenta, green, yellow and cyan light are arranged in a regular manner. If a first field is read from the CCDs, magenta (Mg) and Green (G) pixel signals of odd-numbered rows are read from the first CCD, and yellow (Ye) and cyan (Cy) pixel signals of even-numbered rows are read from the second CCD. If a second field is read from the CCDs, yellow (Ye) and cyan (Cy) pixel signals of even-numbered rows are read from the first CCD, and magenta (Mg) and green (G) pixel signals of odd-numbered rows are read from the second CCD. Four pixel signals (Mg, G, Ye, Cy) from optically adjacent pixels are added to each other to obtain a luminance signal.
摘要:
An exposure controlling apparatus provided for an electronic still camera using an imaging device, such as a CCD, controls an exposure with high accuracy even if a low-accuracy external photometric device or a low-accuracy diaphragm mechanism is used. The apparatus includes a first photometric component for metering the brightness of a subject and outputting a first photometric value, and automatic setting component for automatically setting either an aperture value or a shutter speed, depending on the first photometric value, an imaging device having matrix light receiving elements for effecting photoelectric conversion, and an electronic shutter for controlling charge accumulation time, depending on the set shutter speed. A diaphragm component adjusts a bundle of incident rays on a light receiving surface of the imaging device so a set aperture value will be attained, and a second photometric device effects the preliminary photography at an aperture value and shutter speed set by controlling the electronic shutter and the diaphragm component. The total amount of charges accumulated in all, or a predetermined number, of the light receiving elements of the imaging device are detected, and a second photometric value is outputted that is proportional to the total amount of charge. A shutter speed correcting device is provided for correcting exposure error.
摘要:
An encoded symbol reading device capable of reading and decoding a tessellated symbol. A detector detects an optical image formed by the encoded symbol and outputs a signal corresponding to the optical image. The signal is compared with threshold values and a 1-bit data value is output. The 1-bit data values are converted into an n-bit data value which is stored in a memory. The threshold values are also stored in memory and are obtained by detecting an optical image formed by a surface having a predetermined color.
摘要:
A computer system includes a computer and a peripheral device. A communication cable, used to connect the peripheral device to the computer, has a first cable, a second cable and a patch unit. The first cable encloses a set of power lines and a set of data lines, and the second cable encloses a set of data lines. The patch unit includes a socket with first and second contacts. In the patch unit, the sets of data lines of the first and second cables are connected. One of the power lines is connected to the first contact, and another of the power lines is connected to the second contact. The first cable connects the patch unit with the peripheral device, and the second cable connects the patch unit with the computer. When power is applied from an external source to the first and second contacts, the power is supplied from the first and second contacts to the peripheral device.
摘要:
An encoded symbol reading device capable of reading and decoding a tessellated symbol. A detector detects an optical image formed by the encoded symbol and outputs a signal corresponding to the optical image. The signal is compared with threshold values and a 1-bit data value is output. The 1-bit data values are converted into an n-bit data value which is stored in a memory. The threshold values are also stored in memory and are obtained by detecting an optical image formed by a surface having a predetermined color.
摘要:
A dual type imaging device includes a first CCD and a second CCD, on which complementary color filters with a checkerboard (or matrix) arrangement is disposed. The complementary color filters have the same construction as each other, having magenta elements, yellow elements, cyan elements and green elements arranged in a regular manner. The arrangement of the color elements of the filter of the first CCD is offset, by a width of one light-sensitive element, to the arrangement of the color elements of the filter of the second CCD. An R-signal, a G-signal and a B-signal are sensed in accordance with four light-sensitive elements which are arranged in a 2.times.2 matrix.