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1. 发明专利

JPS59224806A FOCUSING CONTROLLER 失效
公开(公告)号：JPS59224806A
公开(公告)日：1984-12-17
申请号：JP9961583
申请日：1983-06-06
申请人： HITACHI ELECTRONICS
发明人： MIYASHITA ATSUSHI , TATSUMI SHINGO , YAMAMOTO MANABU
IPC分类号： H04N5/232 , G02B7/28 , G02B7/34 , G02B7/11 , H04N5/26
摘要： PURPOSE:To reduce the difference in lens focusing response speed between a long- and a short-focus side by obtaining focal length information, iris information, etc., on an image pickup device from a sensor output, and controlling the extent of lens driving in focusing according to the pieces of information. CONSTITUTION:When the correlation in a correlator 9 is completed, a signal dx indicating the extent of focusing on a subject is sent from the correlator 9 and stored in a memory 13-1. At this time, a focus lens system for a lens 1 is driven according to the extent of focusing. Then, the correlation output dx after the focus lens system is driven by some extent is stored in the memory 13-1 as well as before. At this time, the last stored contents of the memory 13-1 are transferred to a memory 13-2 through a gate 13-10. The absolute value of the difference between the contents of those two memories 13-1 and 13-2 is calculated by a subtracter 13-3, and when the value is smaller than the set value ''E'' of a comparator 13-6, a counter 13-7 counts up by one in response to a clock pulse from an oscillator 13-11.

2. 发明专利

JPS58166307A AUTOMATIC FOCUSING DEVICE 失效
公开(公告)号：JPS58166307A
公开(公告)日：1983-10-01
申请号：JP4738282
申请日：1982-03-26
申请人： HITACHI ELECTRONICS
发明人： TATSUMI SHINGO , YAMAMOTO MANABU , IMAI KUNIO , MIYASHITA ATSUSHI
IPC分类号： G02B7/28 , G02B7/30
摘要： PURPOSE:To execute focusing even in case of an object to be photographed which scarcely causes a luminance variation spatially, by automatically irradiating a light beam and making the object to be photographed have the luminance variation spatially, in case of the object to be photographed which scarcely causes the luminance variation spatially. CONSTITUTION:A light beam 2A from an object to be photographed 1 forms an image on a part 6A of a one-dimensional solid-state image sensor 6 consisting of a CCD through a reflector 3A, a lens 4A and a surface reflection prism 5. A light beam 2B forms an image on a part 6B of the one-dimensional solid state image sensor 6. The sensor 6 is driven by a circuit 7, and it is converted to a time series signal. The signal is binary-coded by a binary-coding device 8, is inputted to a correlator 11, and a distance signal is obtained. The signal from the correlator is sent to an infrared irradiating device 17 through an infrared irradiating signal generator 16, and when it satisfies some condition, the infrared irradiating device 17 irradiates infrared-rays toward one part of the object to be photographed for a specified period.

3. 发明专利

JPS58132609A BINARY CODING SYSTEM FOR IMAGE SIGNAL 失效
公开(公告)号：JPS58132609A
公开(公告)日：1983-08-08
申请号：JP1486682
申请日：1982-02-03
申请人： HITACHI ELECTRONICS
发明人： MIYASHITA ATSUSHI , YAMAMOTO MANABU
IPC分类号： G01C3/00 , G01C3/06 , H03K5/01 , H04N7/18
摘要： PURPOSE:To make it possible to extract the features of objects effectively, in a photoelectric distance measuring device, by comparing the absolute value of the high frequency component signals of the image signals with a specified reference signal, thereby obtaining the effective binary coded signals for many kinds of objects. CONSTITUTION:The output of an image sensor 6 is supplied to a contour intensifying circuit 16, and its output is coded into the binary value by a comparator 8. The binary coded output is imparted to a section limiting circuit 18 including a distributing device 9 and a window signal generator 17. Outputs 10A and 10B of the device 9 are imparted to a correlator and the measurement is performed. In this case, in the distributing device 9, a window signal F corresponding to a depression (a) in an image waveform A generated by the generator 17 is supplied to a gate 9A, and a window signal E corresponding to a depression (b) in an image waveform B is supplied to a gate 9B. The image signals after the gates become waveforms H and G, and the outputs 10A and 10B are obtained. In this way, only the parts expressing the features of the objects are extracted, and converted into the binary coded signals.

4. 发明专利

JPS5887409A BINARY CODING SYSTEM FOR ANALOG SIGNAL 失效
公开(公告)号：JPS5887409A
公开(公告)日：1983-05-25
申请号：JP18522181
申请日：1981-11-20
申请人： HITACHI ELECTRONICS
发明人： MIYASHITA ATSUSHI , YAMAMOTO MANABU
IPC分类号： G01C3/06 , G01C3/00 , G02B7/36 , G03B13/36 , G11B5/09
摘要： PURPOSE:To achieve an effective binary coding of various objects by providing a profile emphasizing circuit for enhancing the rising and falling sections and a sector limiting circuit for extracting specific one from among a string of time- series signals. CONSTITUTION:Outputs of an image sensor 6 is inputted into a profile emphasizing circuit 16 comprising a differentiation circuit 13, a buffer amplifier 14 and a dual-wave rectifying circuit 15 via a waveform shaping circuit 12 inserted to remove noises caused by a sensor driving pulse or the like. The outputs thereof are binary coded with a comparator 8, binary coded outputs of which are inputted into a sector limiting circuit 8 composed of a distributor 9 and a window signal generator 17 thereby cutting off signals varying drastically.

5. 发明专利

JPS5788417A AUTOMATIC FOCUSING SYSTEM 失效
公开(公告)号：JPS5788417A
公开(公告)日：1982-06-02
申请号：JP16334080
申请日：1980-11-21
申请人： HITACHI ELECTRONICS
发明人： YAMAMOTO MANABU , TANAKA SHIYUUHEI
IPC分类号： H04N5/232 , G02B7/34 , G02B7/38 , G03B3/10
摘要： PURPOSE:To obtain focusing with high accuracy, by using image definition signals obtained from a main image pickup element and a subimage pickup element, as logical inputs, and controlling a lens position by an output obtained by executing a specific logical operation processing to said inputs. CONSTITUTION:An image pickup element 21 which forms an image of an object to be photographed, on the image pickup element 21 by an image pickup lens 11, and also is projected on two image pickup elements 31, 41, too, through a beam splitter 12 is a main image pickup element, and also a part of a two- dimensional video signal generated from said element is utilized as an automatic focusing signal, too. When an object to be photographed has been correctly focused on the main image pickup element 21, the subimage pickup element 31 and the subimage pickup element 41 are placed at the front pin which is nearer the lens 11 than said element, and at the rear pin which is farther from the lens 11 than it, respectively, and when the main image pickup element 21 scans a specific horizontal scanning line, the subimage pickup elements 31, 41 are also scanned by synchronizing with said scanning, and three video signals obtained in that case are adjusted so as to correspond to the same part of the object to be photographed.

6. 发明专利

JPS58132708A AUTOMATIC FOCUSING DEVICE 失效
公开(公告)号：JPS58132708A
公开(公告)日：1983-08-08
申请号：JP1486582
申请日：1982-02-03
申请人： HITACHI ELECTRONICS
发明人： TATSUMI SHINGO , YAMAMOTO MANABU , MIYASHITA ATSUSHI
IPC分类号： G03B13/36 , G02B7/30 , G02B7/36
摘要： PURPOSE:To use a faulty sensor in the same way as a normal sensor, by providing a device for storing a position of a fault on a sensor array, and controlling a correlator by use of its information. CONSTITUTION:By use of a faulty sensor, a which object to be photographed, whose luminance is uniform is photographed, and it is made to correspond to the fault. A binary signal Bd is sent to a shift register 11-1b and a shift register 16-1 by a distributor. The binary signal Bd containing the informtion of a faulty position is stored in a fault memory 16, and in accordance with shift of the shift register 11-1b of a correlator 11, stored faulty position information is outputted repeatedly. In case of photographing a general object to be photographed, only in a period in which an output of the falt memory 16 is ''1'' (a period of a signal showing that there is no fault in a sensor 6), an output of an EX-NOR gate 11-6 is fetched from an AND gate 11-8, and correlation of a binary signal A and B is taken exatly.

7. 发明专利

JPS5898710A AUTOMATIC FOCUSING SYSTEM 失效
公开(公告)号：JPS5898710A
公开(公告)日：1983-06-11
申请号：JP19666181
申请日：1981-12-07
申请人： HITACHI ELECTRONICS
发明人： YAMAMOTO MANABU , TANAKA SHIYUUHEI , MIYASHITA ATSUSHI
IPC分类号： G03B13/36 , G02B7/38 , H04N5/232
摘要： PURPOSE:To automatically execute focusing with high accuracy, and also to shorten a focusing time, by freely setting optical path length of a pair of subimage pickup elements for controlling an image forming optical system by a definition detecting system. CONSTITUTION:Definition signals Q, R by subimage pickup elements 31, 41 being at a symmetrical position against a main image pickup element 21 for outputting an image forming definition signal P are processed by a subtractor 54, and movement of a lens 112 is controlled through a composite control signal generator 56, a changeover switch 57, a driving mechanism 61, etc. By this definition detecting system, the element is automatically focused with high accuracy without being influenced by a kind, a position, a contrast, a motion, etc. of an object to be photographed. On the other hand, when most of signals P-R become zero due to large focusing blur, and relation of the signals P-R is different from the reference condition, an output of a logical operation unit 53 is inverted to a low level through comparators 52, 55, and the optical path length of the elements 31, 41 is varied by a search signal generator 58A, and an electromagnetic coil 815, etc. In this way, a difference between the signals Q and R is generated, the lens 112 is not moved to both ends of draw-out and lead-in, and focusing is executed in a short time.

8. 发明专利

JPS57101809A AUTOMATIC FOCUSING SYSTEM 失效
公开(公告)号：JPS57101809A
公开(公告)日：1982-06-24
申请号：JP17819580
申请日：1980-12-17
申请人： HITACHI ELECTRONICS
发明人： TANAKA SHIYUUHEI , YAMAMOTO MANABU , HIRANO MUTSUFUSA
IPC分类号： G02B7/28 , H04N5/232
摘要： PURPOSE:To focus the main image pickup plane automatically with simple and inexpensive constitution by providing the main and subimage pickup planes on the optical path of an image optical system, and controlling the image forming optical system by the output corresponding to the sharpness on the subimage pickup plane. CONSTITUTION:The video of an object is projected to the main image pickup plane disposed on the same plane and the subimage pickup planes 8a, 8b disposed at the front focus and the rear focus by means of a beam splitter inserted into the optical path of an image forming optical system. The outputs from the planes 8a, 8b are separated by a gate circuit 21 operated synchronously with scanning. The signals (a), (b) thereof are inputted to a comparator 2a via differentiating circuits 22a, 22b, integral networks 23a, 23b, and peak holding circuits 24a, 24b. Both inputs are compared in a comparator 25, and a motor 26 driving an image pickup lens is controlled by the differential output corresponding to the deviation from the focusing. Thereby, the main image pickup plane is automatically focused with the simple and inexpensive constitution.

9. 发明专利

JPS57101808A AUTOMATIC FOCUSING SYSTEM 失效
公开(公告)号：JPS57101808A
公开(公告)日：1982-06-24
申请号：JP17819480
申请日：1980-12-17
申请人： HITACHI ELECTRONICS
发明人： YAMAMOTO MANABU , TANAKA SHIYUUHEI
IPC分类号： G02B7/34 , G02B7/38 , H04N5/232
摘要： PURPOSE:To perform accurate and stable focusing controlling by such constitution wherein main image pickup element and subimage pickup element are provided on an optical path of an image forming optical system, sharpness signals are detected, the optical positions of the subimage pickup elements are detected as position signals, and these signals are arithmetically controlled. CONSTITUTION:The video of an object is projected via a beam splitter 3 to a main image pickup element 4 and subimage pickup elements 7A, 7B disposed at front focus and rear focus, the outputs whereof are applied via high-pass filters 21-23, gates 24-26, and wave detectors 27-29 as sharpness signals P, Q, R to the function generator 42 of a control part 41. The outputs of the elements 4 and 7A, 7B are extracted synchronously through a gate 30. When the optical path differences of the elements 7A, 7B with respect to the beam splitter 3 are minimized by a driving mechanism 10, the position signals are inputted via a position detector 12 to a logical operating part 44, which receives the outputs of a subtractor 43 and a function generator 42 of R, Q, R signals and transmits the signal B to the driving mechanism 8 of an image pickup lens 1. Thereby, the accurate and stable focusing controlling is accomplished.

10. 发明专利

JPS5887411A VIDEO SIGNAL PROCESSOR 失效
公开(公告)号：JPS5887411A
公开(公告)日：1983-05-25
申请号：JP18522481
申请日：1981-11-20
申请人： HITACHI ELECTRONICS
发明人： MIYASHITA ATSUSHI , YAMAMOTO MANABU
IPC分类号： G01C3/06 , G01C3/00 , H04N5/14 , H04N7/18
摘要： PURPOSE:To extract features of various objects effectively by arranging a differentiator and a sector controlling means for prohibiting video signals from being inputted into a correlator for a given period after the differentiation. CONSTITUTION:A differentiation circuit 13 emphasizes the profile, namely the sharp falling and rising sections of a video signal. A buffer amplifier 14 sets the input signal level at the appropriate value. Signals passing through a differentiation circuit 13 are rectified with a dual-wave rectifying circuit 15, binary coded with a comparator 8 and inputted into a distributor 9. A window signal is fed to a gate 9A from a window signal generator 17 corresponding to a depression of a video signal. A window signal is fed to a gate 9B corresponding to another recess of the video signal.

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