摘要:
A work piece 1 mounted on a movable table 22 is rotated while adjusting cutting depths of a grinding wheel 23 by means of feed motor so as to perform cylindrical grinding. During the cylindrical grinding, a thermocouple 42 is pushed to and caused to contact the rotating cylindrical grinding surface 1a of the work piece 1 at a constant pressure and thermoelectromotive force generated by the thermocouple 42 is measured. Surface roughness data corresponding to the measured thermoelectromotive force are obtained on the basis of the thermoelectromotive data obtained by the measurement and correlation between thermoelectromotive force and surface roughness concerning a known standard surface previously obtained and memorized. The surface roughness data are output and displayed on a display section. Therefore, an in-process measurement of surface state of the work piece 1 can be performed, while the machining such as cylindrical grinding is being carried out.
摘要:
The object of this invention is to provide an image reading apparatus capable of greatly reducing generation of a black streak image caused by dust, dirt, or the like at a flow scanning position on a document glass table in flow scanning of reading a document image while moving the document sheet at a predetermined speed. To achieve this object, the CPU of the image reading apparatus performs dust detection processing of detecting dust on the document glass table by a dust detection circuit during a document nonreading period. The CPU executes dust correction processing based on the dust detection result during continuous document reading. During an interval between the end of a series of image reading JOBs and the next image reading JOB, the CPU performs dust avoidance processing of changing the flow scanning position to a position free from any dust on the document glass table. If dust is difficult to avoid, the CPU inhibits flow scanning and executes control of switching flow scanning to optical scanning document reading.
摘要:
An image signal recording and reproducing system of this invention includes an apparatus for reproducing an image signal from a recording medium on which the image signal is recorded in a recording format selected between a first recording format for recording a reference signal for time base correction together with the image signal and a second recording format for recording the image signal without the reference signal for time base correction. The apparatus is arranged to detect whether or not the reference signal for time base correction is present in a signal reproduced from the recording medium and then to process and reproduce the signal reproduced from the recording medium on the basis of a reproduction format selected between a first reproduction format corresponding to the first recording format and a second reproduction format corresponding to the second recording format in accordance with the detection result. Accordingly, it is possible to reproduce the image signal in a correct format corresponding to the recording format of the image signal.
摘要:
A video signal processing device comprises a pulse generating circuit arranged to produce reading pulses for a given first period of time within one horizontal scanning period and to be in repose for the remaining second period of time; a signal processing circuit arranged to introduce a video signal read out from an image sensor according to the reading pulses and to form first and second video signals; a memory arranged to store the second video signal; and a change-over circuit for producing the first video signal from the signal processing circuit during the first period and the second video signal from the memory during the second period.
摘要:
A work piece 1 mounted on a movable table 22 is rotated while adjusting cutting depths of a grinding wheel 23 by means of feed motor so as to perform cylindrical grinding. During the cylindrical grinding, a thermocouple 42 is pushed to and caused to contact the rotating cylindrical grinding surface 1a of the work piece 1 at a constant pressure and thermoelectromotive force generated by the thermocouple 42 is measured. Surface roughness data corresponding to the measured thermoelectromotive force are obtained on the basis of the thermoelectromotive data obtained by the measurement and correlation between thermoelectromotive force and surface roughness concerning a known standard surface previously obtained and memorized. The surface roughness data are output and displayed on a display section. Therefore, an in-process measurement of surface state of the work piece 1 can be performed, while the machining such as cylindrical grinding is being carried out.
摘要:
An image input apparatus has an image sensor for photoelectrically converting image information of an object into an electric signal and outputting the signal, and a correction circuit for adjusting a fluctuation of offset components generated during photoelectric conversion contained in the signal output from the image sensor to correct the offset components. Images of good quality can be obtained by correcting the offset components contained in the signal output from the image sensor.
摘要:
An image signal recording apparatus for recording, on a recording medium, image signals corresponding to an image in which one picture is composed of a plurality of horizontal scanning lines is arranged to store the image signals for one picture, to simultaneously output N kinds (N: an integer at least 2) of image signals corresponding to N number of horizontal scanning lines adjacently located on the picture, and to simultaneously record, in different areas on the recording medium, the N kinds of image signals. This arrangement enables the apparatus to record an image signal of a high picture quality on the recording medium with a high degree of density.
摘要:
An image signal recording apparatus of this invention for recording an image signal on a recording medium, is arranged to divide an image signal corresponding to one picture into k field image signals (k=an integer not less than 3), then multiplex a first index signal indicating that frame reproduction is possible during reproduction with 2n field image signals (n=an integer not less than 1) from among the k field image signals thus formed, while multiplexing a second index signal indicating that no frame reproduction is possible during reproduction with m field image signals (m=a positive integer) from among the k field image signals; and then record the k field image signals, each of which is multiplexed with the first or second index signal, on k tracks of the recording medium, respectively. With this arrangement, it is possible to record on the recording medium an image signal with high image quality compared to conventional arrangements while retaining compatibility with them.
摘要:
In a surface treating method of the present invention, a fluid suction passage 26 communicating with a fluid supply passage 25 via only a narrowed portion 27 is provided, so as to approximately concentrically surround the periphery of the fluid supply passage 25 having the narrowed portion 27 at one end thereof, and the sucking cavitation flow 5 is generated at the direct downstream of the narrowed portion 27, by sucking the processing fluid 8 into the fluid suction passage 26 using a suction pump 17, as well as a surface treating is performed on the treated surface 6a, by crushing the sucking cavitation flow 5 approximately perpendicular to the treated surface 6a.
摘要:
Since an apparatus has a linear image sensor for scanning an image at the stop position of a mirror table from a document that moves at a constant speed, a black stripe image detection circuit for detecting the presence/absence of generation of a black stripe image on the basis of an image signal, and a CPU for determining that dust or soil is attached to the surface of the platen glass upon detection of generation of the black stripe image, and making control for changing the stop position of the mirror table and control for displaying a warning message, any black stripe generated due to dust or soil on the platen glass surface is detected in the sheetfed scanning mode, and the control for changing the sheetfed scan position or the control for displaying a warning message indicating that dust or soil is attached to the platen glass surface is done in accordance with the detection result, thus reducing the frequency of occurrence of generation of a black stripe compared to a conventional apparatus.