Abstract: In an apparatus using a printer mechanism for reading a document wound around a platen of a printer, when a document is read, and ink ribbon cassette mounted on a carriage of the printer for printing is replaced with a cassette case having a reading section therein, while the printing head remains fixed on the carriage. The reading section is located such that a lens barrel mounting an image sensor thereon is positioned for reading the document without being interfered with by the fixed printing head.

Abstract: A projection display apparatus includes a light source unit for generating light for image formation, an electro-optical display device for displaying an optical image by utilizing the light emitted from the light source unit, and an enlarging/projection lens. The light source unit, the display device, and the projection lens are accommodated in a housing with vent openings. The housing also includes a fan for cooling the interior of the housing with cool air and a cooler for maintaining a display panel within a predetermined temperature range. The light source unit includes a lamp and a reflector and is designed not to cause image deformation and formation of a shadow of a discharge portion. In order to display a television image on the display device, all television image display circuit units excluding an antenna are accommodated in the housing. The enlarging/projection lens can control a magnification and a focal point of the image projected on the screen.

Abstract: An electrical cash register is disclosed, which is provided with a numerical data memory in which sales data input from a keyboard are successively accumulated, and also in which commodity data for different items input from said keyboard are stored when a particular key on the keyboard is operated. When a data transmision key on the keyboard is operated, the sum of sales data and commodity data stored in the numerical data memory are transmitted to an external apparatus. Before commodity data is transmitted, its format requirement (digit number length) is checked and commodity data memory availability for the particular requirement is also checked.

Abstract: An electronic key apparatus wherein an encrypted code for unlocking an electronic lock is stored in an encrypted code storage register. A password is stored in a password storage register. The same password as that stored in the password storage register, is input via a switch. The password input by the switch is compared with the password stored in the password storage register, by a coincidence detection circuit. When a coincidence is detected, the encrypted code stored in the encrypted code storage register is transmitted to the electronic lock, by a transmitter.

Abstract: Synthetic resin shaft and gear portions are molded to be capable of slipping each other. During a normal timepiece operation, the shaft and gear portions are integrally rotated. During a hand setting operation, the shaft portion is rotated with slip on the gear portion. In this slip structure of a timepiece, at least one of the shaft and gear portions is formed of an oil-containing resin material.

Abstract: In a character input device in a document data processing apparatus, when a special-purpose key on a keyboard is operated in a character input device in a document, data processing apparatus and when a word, in which at least one starting character of the word designated to be a key word, coincides with at least one sought after character, and is detected as such, by a search circuit, from words key-inputted in advance, thereby establishing the coincidence, the corresponding word is stored in a text memory as a newly input word.

Abstract: A powder supply device with a solar cell is made up of a solar cell, a seconary battery, and a voltage control unit. The voltage control unit controls the output voltage of the solar cell, and produces first and second output voltages. The first output voltage is for charging the secondary battery. The second output voltage is for driving a circuit, such as the logic circuit of an electronic calculator.

Abstract: A plurality of drum pads are each provided with a respective piezoelectric pick-up. The output of each piezoelectric pick-up is fed to a corresponding envelope-extracting circuit. The envelope signal extracted by the envelope-extracting circuit is converted by an A/D converter into a digital signal which is fed to a CPU. The CPU feeds a tone designation signal to a tone generator unit according to parameter data from a parameter data setter and the digital signals noted above, thereby causing generation of a corresponding drum sound.

Abstract: When data is written in a predetermined memory area of a data memory in an IC card, a comparator checks whether the data before writing and data actually written in the data memory coincide. In the event of non-coincidence of the compared data, the data to be written is written in a different memory area of the data memory.

Abstract: An electronic schedule display apparatus comprises a key input section for inputting schedule data, the schedule data input by the key input section consisting of day data corresponding to date data, start time data, end time data, and content data of a scheduled event; a schedule data storage section for storing the schedule data input by the key input section, a matrix display device including a large number of optical matrix display elements arranged to correspond to a matrix table of days and times, one optical matrix display element of the matrix display device corresponding to several minutes, and one hour being constituted by the display elements smaller in number than 60, and a schedule time display control section for driving the display elements of the large number of optical matrix display elements of the matrix display device between one corresponding to the start time data of the schedule data stored in the schedule data storage section and one corresponding to the end time data of the schedule d

Abstract: In a compact liquid crystal television receiver having an information memory, map information, train time table information, or telephone directory information is prestored in the information memory, and is read out therefrom as needed. The readout information data is displayed on a screen, instead of a television image. In the case, window display can be used. The information memory is an IC card, and a still image audio or characters by character broadcasting can be recorded or reproduced.

Abstract: An image display apparatus having an A/D converter which samples a television signal a plurality of times in each horizontal effective display period and converts the sampled signal into digital data, and a gradation signal generator combines gradation signals produced in a plurality of horizontal effective display periods according to the digital data to produce a new gradation signal. An image display panel is driven for display according to the new gradation signal.

Abstract: In an electronic time-keeping apparatus wherein a plurality of schedule data is stored, chronologically readable, and displayed, schedule data input from a key input section is compared, under control of a read only memory, with a number of schedule data already stored in a random access memory, and edited in a time sequence of recency with a present date as a reference basis to permit the edited schedule data to be stored in this random access memory. A time count operation is performed each time a predetermined timing signal is output from a frequency dividing circuit. A detection is made as to whether or not there is a coincidence between present date data obtained by the time count operation and the edited schedule data stored in the random access memory to see if an appointed date is reached.

Abstract: In a counter apparatus for an image forming apparatus according to the present invention, which counts and manages the number of image forming operations, data which is ultimately written is retrieved from data stored in an EEPROM, and the retrieved data is set in a RAM counter as an initial value. The RAM counter performs a count-up operation for each printing operation for production of new data. The new data is written in the EEPROM for each production, so that a count value when a power source is turned off is held therein. In the EEPROM, a plurality of unit areas are continuously provided and are used as data write areas. The new data is sequentially written for each unit area. Thus, the number of write operations for the unit areas is decreased, so that the EEPROM which has a limited number of times of write access can constitute the counter apparatus together with the RAM counter.

Abstract: A liquid crystal display device for enlarging and projecting an image displayed on a transmission liquid crystal display panel through a projecting lens onto a screen by radiating a light from a light source to the panel, has a heat pipe inserted into a transparent cooling vessel filled with transparent cooling liquid for externally radiating heat absorbed by the liquid to suppress the temperature rise of the panel due to the light incident to the panel.

Abstract: In a liquid crystal projector wherein a light source is arranged behind a transmission liquid crystal display panel having a rectangular display portion, an image displayed on the liquid crystal display panel is enlarged by a projection lens, and an enlarged image is projected on the screen located in front of the liquid crystal display panel, a linear Fresnel lens is arranged between the light source and the liquid crystal display panel to narrow illumination light beam from the light source along only the widthwise direction of the rectangular display portion. When the illumination light beam from the light source is narrowed along only the widthwise direction of panel, the amount of unused light beam emitted outside the long sides of the display portion can be reduced, and the light beam from the light source can be effectively utilized for image projection.

Abstract: A character recognition device has an input section having a plurality of touch electrodes. When the human body contacts at least two of the touch electrodes of the plurality of touch electrodes, the contacting capacity components of the touch electrodes are detected by a capacity component detection section. The contacting central point coordinates of the touch electrodes are calculated by calculation sections from the contacting capacity components of the touch electrode thus detected. The character hand-written on the plurality of touch electrodes is recognized as a character by character recognition sections, from the contacting central point coordinates calculated by the calculating sections.

Abstract: A sales data processing apparatus has a stock data memory for storing stock data indicating the stock of each item. When sales of a certain item are registered, a value corresponding to a registered number is subtracted from the stock data corresponding to the item. When the item is put into stock, the stock-in number is added to the stock data. The apparatus has a detector for detecting that the stock data has reached a predetermined value. When the detector detects that the stock data has reached the predetermined value, date and time data at this time are stored in an out-of-stock date and time memories, respectively. By switching a mode switch, the out-of-stock date and time data are subtracted from current time data, thereby calculating out-of-stock period data indicating the period the item has been in the out-of-stock state.

Abstract: A liquid crystal drive circuit includes a first buffer circuit for outputting a selection high level segment voltage V0' using a nonselection high level common voltage V1 from a common voltage generator as a reference, and a first operational amplifier for outputting a nonselection high level segment voltage V2' having an inverted voltage level of the selection high level segment voltage. The liquid crystal drive circuit also includes a second buffer circuit for outputting a selection low level segment voltage V5' using a nonselection low level common voltage V4 as a reference, and an operational amplifier for outputting a nonselection low level segment voltage V3' having an inverted voltage level of the nonselection low level segment voltage.