Abstract: A dialing tone generator employs a low-frequency oscillator as a reference signal oscillator. The reference signal is frequency-divided into first and second frequency-divided signals. The first frequency-divided signal is used to produce a low-frequency tone signal, whereas the second frequency-divided signal is used to produce a high-frequency tone signal. These tone signals are rectangular waveforms. The rectangular waveforms are filtered in corresponding low-pass filters to output first and second sine-wave signals. Then, these sine-wave signals are synthesized with each other to produce a desired dialing tone.

Abstract: The invention provides an electronic cash register which compares mode position data specified by a mode switch, with preset mode data associated with data representing a pressed one of a plurality of function keys and which is read out from a memory, the preset mode data serving to indicate whether or not the pressed key is valid in view of the specified mode position data. If the pressed function key is determined to be an invalid key, processing corresponding to the pressed function key is prohibited by a CPU.

Abstract: A computer controlled by a voice input has a speech recognition section for converting a keyword of a program which is entered by the voice input and corresponds to a start number, thereby obtaining a digital code. The digital code data which indicates the keyword selects the start number corresponding to the storage content of a table stored in a program memory. The start number data is used to access a start address of the corresponding program, thereby starting and executing the program. Also disclosed is a system wherein when a chosen key of a key input device is operated while a voice operator guidance is generated, a key-in signal is produced to forcibly stop the ongoing guidance. In particular, when a plurality of voice operator guidances are provided, the computer learns the state of the operation by the operator from the manner of the forcible stop, and automatically stops the generation of the voice guidance on a specific item from the next processing.

Abstract: An image forming apparatus has a light source, and one or more liquid crystal units for forming a latent image on the photosensitive drum by controlling the passage of the light from the light source between the light source and the drum. The liquid crystal units have a plurality of shutter arrays arranged with a plurality of microshutters. The microshutter has a miniature region for controlling the passage of the light, and the regions are different at every microshutter for forming the individual shutter arrays.

Abstract: An electronic calculator has a program calculation function. The calculator also includes a key for designating substitution of numeral data for variables, a key for designating a variable, and a key for representing an interval of variables in addition to normal numeric keys. When numeral data (e.g., 10) is to be substituted for variables (e.g., A to D and H to K) among certain program variables, an operator designates numeral data "10", variables A to D and H to K with the keys. A control section then starts a substituting operation by storing the numeral data "10" in memory areas of a variable memory defined by addresses corresponding to the variables A to D and H to K. Thus, the numeral data "10" is substituted for the variables A to D and H TO K.

Abstract: A two frequency addressing liquid crystal composition wherein a plurality of liquid crystal compounds are mixed such that the absolute value of a dielectric anisotropy .DELTA..epsilon.L of the composition, measured at a low frequency 1/10 a cross-over frequency of the composition, is larger than the absolute value of a dielectric anistropy .DELTA..epsilon.H of the composition measured at a high frequency 10 times the cross-over frequency.

Abstract: A plurality of pad operating means for manual operation are provided on a keyboard panel of an electronic keyboard musical instrument. When an operator operates the pad operating means using the keyboard during melody play, an operation signal is supplied to a CPU, and a rhythm sound corresponding to the operated pad is generated under control of the CPU.

Abstract: A pen printer for performing drawing with a detachably held pen comprises a pen holder operation mechanism for moving a pen holder detachably holding the pen between a pen attaching position, where the pen is attached to or detached from the pen holder, and a home position, where drawing is started or ended, and for moving the pen holder from the home position for drawing a desired sign or figure according to a pattern corresponding to the desired sign or figure and causing the pen holder to return to the home position, a support member for supporting the pen holder operation mechanism to be movable in all directions, a pen seat, mounted on the support member, for receiving a tip of the pen held by the pen holder, pen attaching position reference point display marks, mounted on the pen seat, for displaying a pen attaching position reference point for the pen tip of the pen held by the pen holder, and pen holder operation mechanism moving screws for moving the pen holder operation mechanism in all directions s

Abstract: A tone generation control unit has four waveform read/write channels for selectively reading or writing data in a waveform memory. A plurality of waveform signals stored in the waveform memory are converted into analog signals to be subjected to timbre and tone volume control through voltage-controlled filters and voltage-controlled amplifiers before being fed to a mixing adder. An output signal of the mixing adder is converted into a digital signal which is stored in the waveform memory again through processing of the tone generation control unit.

Abstract: A method of driving a liquid crystal recording device comprises applying a drive signal to liquid crystal micro shutters defined at the intersection of common electrodes that are normal to signal electrodes. The drive signal is a signal experienced by a microshutter as a result of the application of a selected signal to the common electrode and the application of a recording signal to the signal electrode. Both the selected and recording signals contain components of frequencies grater and less than a specified frequency which causes the dielectric anistotropy of the liquid crystal to disappear. A drive signal which opens or closes microshutters for a selected period of time includes a signal whose frequency is lower than said specified frequency, and superposed waveform obtained when the signal whose frequency is loser than the specified frequency is superposed upon a signal whose frequency is higher than the specified frequency.

Abstract: The present invention relates to a cleaning apparatus for use in a photocopying apparatus. The cleaning device comprises a grounded conductive fur brush for removing residual toners on a photosensitive drum and a conductive retrieval roll for retrieving the toners caught in the fur brush, a predetermined bias voltage being applied to conductive retrieval roll. The cleaning device further includes a scraping means for scraping the toner transferred to said conductive retrieval roll.

Abstract: An IC card system includes a memory, having a plurality of areas into which history data of transactions made with the use of an IC card is written, a detecting unit for calculating the number of available history data areas of plurality of data storage areas and display means provided in the IC terminal or IC card to clearly display that number as a remaining available data storage number.

Abstract: A key input unit, a display unit and a solar cell are arranged on one surface of a card-like electronic calculator. This surface serves as an electronic calculator. The outer shape of the card-like electronic calculator is the same as that of a credit card. Furthermore, a magnetic stripe portion on which predetermined data is recorded, and embossed portions for displaying information are formed on the other surface of the calculator. Therefore, the calculator also serves as a credit card.

Abstract: A customer service system for use in an IC card system comprises a customer's IC card, a display, a display controller, and a customer's IC card read-write unit. The IC card includes an IC having a first memory for storing an ID number, a second memory for storing secret data, an interface for controlling the input and output of data to and from the IC card, a comparator for comparing the input data with the ID number, and a controller for controlling the first and second memories, interface and comparator. The display controller supplies the items of a predetermined service menu to the display, and also supplies necessary data to the display in accordance with the item of menu selected by the customer.

Abstract: In an IC (integrated circuit) system, a first IC card owned by a cardholder and a second IC card owned by a person other than the cardholder are employed. The first IC card is a normal IC card having a memory for previously storing a personal identification number. The first IC card includes a comparator. The second IC card is a remote PIN entry card having a keyboard for entering the PIN by a cardholder. After the PIN has been entered by the cardholder in the remote PIN entry card, this card is loaded by the person into a card terminal. Then, the PIN entered in the remote PIN entry card is transferred into the card terminal, and thereafter the PIN of the card terminal is transferred into the IC card so as to identify whether the cardholder is an authorized cardholder or not by comparing in the comparator both the PIN's with each other.

Abstract: A pen-type character recognition apparatus includes an input data detecting section for detecting input character data as data representing a certain character according to a change in pressure applied to a tip element of a pen. A data processing section standardizes the output data from the input data detecting section by compressing the output data to a predetermined number of data for the character, so as to generate corresponding standardized data. A data registering section registers in advance selected standardized data as standard pattern data for corresponding to the predetermined input character data when a character is written with the pen tip element, and an input character recognizing section recognizes the character represented by the input character data by comparing the standardized data generated from the data processing section with the data registered in advance in the data registering section.

Abstract: A portable electronic memorandum device has a memory for storing character data items. When a switch is operated, all the address areas of the memory are designated so as to sequentially read out all the character data items stored therein. All the character data items are then sequentially displayed on a display. After all the character data items stored in all the address areas are sequentially displayed on the display, the address of the memory is updated by the operation of switches, thus performing an edit operation of the character data items.