Optical Patents (Class 368/239)
  • Patent number: 4270196
    Abstract: Balanced complementary digital time displays, for readout in a left to right direction, in which (i) during the first half of each successive hour, the principal digit value of the present hour is in a leading position relative to trailing principal minute digit values which increase from zero to thirty, while simultaneously the complementary digit value of the next hour is in a trailing position relative to leading complementary minute digit values which correspondingly decrease from sixty to thirty, and (ii) during the second half of each successive hour, the principal digit value of the next hour is in a trailing position relative to leading principal minute digit values which decrease from twenty-nine to one, while simultaneously the complementary digit value of the present hour is in a leading position relative to trailing complementary minute digit values which correspondingly increase from thirty-one to fifty-nine. Such displays provide immediately comprehendible exact and gross time indications.
    Type: Grant
    Filed: March 6, 1979
    Date of Patent: May 26, 1981
    Inventor: Berj A. Terzian
  • Patent number: 4267589
    Abstract: There are provided a frequency divider for dividing the frequency of the frequency signal produced by an oscillator, a counter for counting the number of the frequency divided fundamental signal, an input circuit for prestoring a time to be announced in a memory device so as to operate an alarm device, a comparator for comparing the time counted by the counter with a preset time, an input circuit supplied with a message so as to display the message concurrently with the operation of the alarm device, a character memory device for storing the applied message, and a display device for displaying the stored message. The content of the counter is compared with the time to be announced preset in the memory device. When a coincidence holds a buzzer is operated and at the same time a predetermined message preset in the character memory device is displayed on the display device.
    Type: Grant
    Filed: September 26, 1979
    Date of Patent: May 12, 1981
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventor: Tetsuo Yamaguchi
  • Patent number: 4264970
    Abstract: A liquid crystal display cell for use in an electronic timepiece having an analog display of time by time indicating hands combined with a digital display, said liquid crystal display cell being of polygonal profile in plan, with one internal angle of said profile being in the range 180 degrees to 360 degrees.
    Type: Grant
    Filed: September 18, 1978
    Date of Patent: April 28, 1981
    Assignee: Citizen Watch Company Limited
    Inventors: Katsuo Nishimura, Takatoshi Nakayama, Toshihiko Nakayama
  • Patent number: 4264966
    Abstract: Balanced digital time displays for presenting readouts in which (A) minute digits are positioned to trail hour digits during the first half of each hour and are then reversed to lead the hour digits during the second half of each hour, (B) the minute digits are driven to count minutes up to a peak value of 30 during the first half of each hour and then down to 00 with advancement of the hour digits to the next hour, during the second half of each hour, (C) second digits are positioned perpendicularly below the minute digits and (D) the second digits are driven to count seconds up to a peak value of 30 during the first half of each minute and then down to 00 during the second half of each minute. Such balanced displays provide immediately comprehendible readouts of time in both gross and precise contexts.
    Type: Grant
    Filed: June 29, 1979
    Date of Patent: April 28, 1981
    Inventor: Berj A. Terzian
  • Patent number: 4263666
    Abstract: A device for correcting the contents of a display, which is used in electronic timepieces equipped with a display for indicating day, date, hour and minute, including a stem which has a crown at a tip portion thereof and is capable of being moved between three stable positions. In the first position, the stem is in its most axially inserted position. At a second position, in which the stem is withdrawn by one step from the most inserted first position, the stem is allowed to turn in both the right and left directions by a suitable angle. At a third position in which the stem is further pulled by one step from the second position, it may also be turned, by an appropriate angle, in both directions. The movement of the stem in the axial direction is detected by a first switch means, and the rotation of the stem at the second and third positions is detected by a second switch means, whereby any one of the four display items is corrected depending upon the state of the two switch means.
    Type: Grant
    Filed: October 2, 1978
    Date of Patent: April 21, 1981
    Assignee: Citizen Watch Co., Ltd
    Inventor: Mitsuhiro Murata
  • Patent number: 4261049
    Abstract: A wristwatch includes a module, and a display section overlying the module. The module has a recess which surrounds the display section and which accommodates a solar cell unit having a window therein for accommodating the display section. The unit is located by the co-operation of the edge of the window with projecting portions on the module. The upper surfaces of the display section and the solar cell unit are substantially flush. Support members for supporting the display section are electrically connected with a battery of the watch and have spring portions which are electrically connected to the solar cell unit.
    Type: Grant
    Filed: December 13, 1978
    Date of Patent: April 7, 1981
    Assignee: Citizen Watch Co., Ltd.
    Inventors: Katsuhiko Komiyama, Toshio Hiruta
  • Patent number: 4255804
    Abstract: An electronic watch adapting a matrix drive display system. An electronic watch comprises a single voltage level power source serving as the energy source for a circuit of the watch, a matrix drive type liquid crystal display device providing digital indications of times by means of line and column electrodes, a crystal oscillator producing a time reference signal, a frequency divider circuit dividing said time reference signal into time unit signals, a time keeping counter counting the time unit signals to provide a time keeping signal, matrix drive circuit means converting said time keeping signal into drive signals for said line and column electrodes and pitch measurement signal transmission means act on the matrix drive circuit means to momentarily supply at least some of the wave forms of outputs of the time line and column electrode drive signals.
    Type: Grant
    Filed: February 23, 1978
    Date of Patent: March 10, 1981
    Assignee: Citizen Watch Company Limited
    Inventor: Kunio Suganuma
  • Patent number: 4254486
    Abstract: Seven symbol lamps are aligned, in addition to a six-digit numeral display for displaying time information, in order to indicate any one of the days of the week printed on a calendar panel. A mode panel is disposed, parallel to the calendar panel, on which labels representative of a month information correction mode, a date information correction mode, a day of the week information correction mode, an hour information correction mode, a minute information correction mode, and other operation modes such as a stop-watch mode are provided at positions corresponding to the seven symbol lamps. The symbol lamps are continuously enabled when they indicate the days of the week information printed on the calendar panel, and the symbol lamps are controlled to flicker when they indicate any one of the operation modes represented by the mode panel.
    Type: Grant
    Filed: November 9, 1976
    Date of Patent: March 3, 1981
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Toshiyuki Masuda, Takehiko Sasaki
  • Patent number: 4244126
    Abstract: This invention is a combination of known elements for a new use. This is an adaptation of the old shadow light principle coupled with time to cause three different light apertures to be aligned in a lighted window effect, thereby indicating a previously programmed marking to remind the owner of hourly, daily or weekly radio, television programs, appointments or meetings.
    Type: Grant
    Filed: September 29, 1978
    Date of Patent: January 13, 1981
    Inventor: Don S. James
  • Patent number: 4245335
    Abstract: A digital timepiece is provided with a quartz oscillator, frequency divider and counting circuits, a decoder and a digital electrooptical display device. The timepiece is suitable to operate as a standard digital wristwatch to display the present, i.e., elapsed, time or in the alternative to indicate the remaining time of minutes in the hour or remaining seconds of the minute, i.e., the complement of the elapsed time. A data converter circuit responsive to a manually actuatable switch device is provided for performing the data complement conversion function.
    Type: Grant
    Filed: September 28, 1979
    Date of Patent: January 13, 1981
    Assignee: Timex Corporation
    Inventor: Leo Wiesner
  • Patent number: 4245337
    Abstract: A digital watch including a clocking signal generator is disclosed wherein a control circuit provides phasing signals for multiplexing data representing seconds, minutes, hours, and date information in successive cycles to a visual display panel. In the normal mode of operation of the watch, minutes and hours are displayed. The watch further includes circuitry for selectively displaying seconds and date information as well as for setting the hours, minutes, and date. The aforementioned functions require the utilization of only three functional switches which may be incorporated into a stem of the watch. By selectively closing and opening one switch, as for example, pushing in and releasing the stem, seconds information is first displayed and then the date information is momentarily displayed for a predetermined interval after which the watch returns to a normal mode of operation of displaying hours and minutes.
    Type: Grant
    Filed: October 20, 1978
    Date of Patent: January 13, 1981
    Assignee: Motorola Inc.
    Inventors: Richard G. Daniels, Richard S. Walton, Roy K. Yamanouchi
  • Patent number: 4236241
    Abstract: An electronic timepiece includes a frequency supply for providing a relatively high frequency time base signal, a frequency converter responsive to the relatively high frequency time base signal to provide a timing signal, a clock signal, and a time unit signal. A timekeeping circuit is responsive to the time unit signal to provide a time information signal, and at least one of the timing signal, clock signal, and time information signal is chopped into periodic bursts to effect transfer of the at least one of the timing signal, clock signal, and time information signal from one part to another part in the timepiece. The time in response to the time information signal is displayed.
    Type: Grant
    Filed: September 15, 1978
    Date of Patent: November 25, 1980
    Assignee: Citizen Watch Company Limited
    Inventors: Shigeru Morokawa, Fukuo Sekiya, Yukio Hashimoto, Yasushi Nomura, Keiichiro Koga
  • Patent number: 4233681
    Abstract: An electronic timepiece having liquid crystal or light-emitting diode display elements provides a logic network for flickering a part or all segments of the display element at a plurality of repetition rates and duty cycles, whereby additional intelligence associated with the repetition rate and duty cycle is conveyed by the display element. The logic network gives priority of display to any one preselected supplemental flickering intelligence function when there is a coincident demand for more than one supplemental function for display. Flickering draws attention to the supplemental intelligence contained in an otherwise continuous display.
    Type: Grant
    Filed: December 29, 1978
    Date of Patent: November 11, 1980
    Assignee: Kabushiki Kaisha Suwa Seikosha
    Inventor: Masami Murata
  • Patent number: 4228534
    Abstract: An electronic watch control device for manual actuation is disclosed. It comprises a capacitive sensor including a conductive layer on the inner surface of the watch-glass, which is actuated by placing a finger-tip on the outer side of the watch-glass. The sensor is part of a capacitive voltage divider to which a high frequency voltage is applied. Synchroneous detection means are arranged for detecting the high-frequency voltage drop across the sensor in synchronism with the high-frequency. Comparison means are provided for comparing the value of the said voltage drop to a reference voltage and producing a control signal depending on the condition of the sensor.
    Type: Grant
    Filed: November 2, 1977
    Date of Patent: October 14, 1980
    Assignee: Centre Electronique Horloger S.A.
    Inventors: Jean Fellrath, Jean-Felix Perotto
  • Patent number: 4225847
    Abstract: Disclosed is a data display circuit which comprises a shift register circuit including six cascade-connected shift registers shifting serial data to produce parallel data, a decoder circuit including three decoders receiving the parallel data from the shift register circuit and producing output data corresponding to such input data, a latch circuit coupled to the decoder circuit, a control circuit coupled to the decoder circuit and the latch circuit and supplying these decoder and latch circuits with control pulses so that output data from the decoder circuit may be held temporarily in the latch circuit, and a display device for displaying output data from the latch circuit.
    Type: Grant
    Filed: March 9, 1979
    Date of Patent: September 30, 1980
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Eiji Masuda, Teruaki Tanaka, Tetsuo Yamaguchi, Hiroaki Suzuki
  • Patent number: 4206458
    Abstract: A numerical display system for electronic instrument comprises output means capable of displaying or printing a plurality of numbers different in unit or number system, numeric data storage means for supplying numeric data to the output means, and means for controlling the supply of the numeric data stored in the storage means to the output means and for controlling to suppress the output of zero in each of the numbers different in unit or number system contained in the numeric data to be displayed or printed.
    Type: Grant
    Filed: September 29, 1978
    Date of Patent: June 3, 1980
    Assignee: Canon Kabushiki Kaisha
    Inventor: Ichiro Sado
  • Patent number: 4198810
    Abstract: A chronometric indicator has a multidigit display each of whose digits is formed by a plurality of individually energizable digit segments having respective digit-segment connections and having a common digit-display connection so that simultaneous energization of the common connection with any of the digit-segment connections will optically activiate the respective digit segments. An annular array of sixty angularly equispaced analog display segments surrounds the multidigit display and has an analog-segment connection for each part and inner and outer rings subdividing the analog display segments into inner and outer parts. Simultaneous energization of the inner or outer rings and one of the analog-segment connections will optically activate the corresponding inner or outer part. Each of the digit-display connections is connected to a respective one of the analog display segments.
    Type: Grant
    Filed: June 30, 1978
    Date of Patent: April 22, 1980
    Assignee: Braun AG
    Inventor: Kurt Fahrenschon
  • Patent number: 4195471
    Abstract: Parking meter comprising a visible means, a first time measuring device which switches the visible means off after a given parking period and a second time measuring device which renders the visible means unusable after a predetermined parking time which is many times longer than the given parking period.
    Type: Grant
    Filed: May 8, 1978
    Date of Patent: April 1, 1980
    Inventor: Marc L. R. M. Verhoeven
  • Patent number: 4194352
    Abstract: A 13-element array of digital time display elements is selectively energizable to display relatively large hour digits of value 0 to 9, or relatively small minute digits of value 0 to 9 in a relatively upper or a relatively lower position. Three such arrays, together with two vertical line display elements, in ordered horizontal alignment, provide a compact, multi-functional display capable of performing balanced or quadribalanced digital time keeping. Four such arrays aligned horizontally provide another compact, multi-functional display capable of performing balanced, quadri-balanced or chronographic digital time keeping.
    Type: Grant
    Filed: August 11, 1978
    Date of Patent: March 25, 1980
    Inventor: Berj A. Terzian