摘要:
A high voltage generation circuit for use with a semiconductor memory device includes a plurality of high voltage generation units and a control circuit. The high voltage generation units generate high voltages having different voltage levels in response to corresponding clock signals. The control circuit generates clock signals, which do not toggle simultaneously, based on the voltage levels of the high voltages.
摘要:
A high voltage generation circuit includes a delay circuit configured to generate multiple delay clock signals based on a clock signal. The delay clock signals include corresponding different predetermined delay times. The high voltage generation circuit further includes multiple pumps corresponding to the delay clock signals. The pumps are configured to perform a charge pumping operation in response to the corresponding delay clock signals to generate a high voltage.
摘要:
An external sound outputting device is provided. The external sound outputting device includes a connection connector and a speaker unit. The connection connector is inserted into a connection terminal of a portable terminal. The speaker unit outputs an electric signal delivered through the connection connector as an audio signal. The speaker unit rotates in multi-directions when the connection connector is connected to the portable terminal.
摘要:
An apparatus for improving reception sensitivity of a public wave receiver includes power devices formed in a power supply of the public wave receiver, and a shielding plate for shielding noise generated by the power devices. A signal line for connecting an antenna used for the public wave receiver to a public wave receiver main body and a ground line are formed coaxially to each other by a shield layer.
摘要:
The present invention relates to a system for dynamically converting a webpage, which can construct a web application and a site for supporting a cross browser and a cross platform and, particularly, the system for dynamically converting a webpage comprises: a library storage unit for storing at least one constituent element which constitutes a webpage or a web application; a layout editing unit for arranging the constituent element selected from the library storage unit on a layout for configuring the webpage; an attribute editing unit for setting an attribute for each constituent element arranged by the layout editing unit; a contents editing unit for providing a function of editing contents arranged by the layout editing unit; a parameter converting unit for converting each constituent element arranged by the layout editing unit into a standard parameter value; a standard parameter information database for storing the standard parameter value converted by the parameter converting unit; a browser determination unit for determining the type of a browser or the type of an operating system of a user terminal according to a conversion request of a user; a conversion engine unit for converting standard parameter information stored in the standard parameter information database into a suitable type of a webpage source according to the determination of the browser determination unit; and a display engine unit for displaying the converted source.
摘要:
Disclosed are multi-channel PWM (Pulse Width Modulation) apparatuses and methods for modulating PCM-based multi-channel audio signals read from an optical medium into PWM-based multi-channel audio signals. A multi-channel PWM apparatus and method can reduce noise from amplifying PCM-based audio signals having adjacent signal processing paths. The multi-channel PWM apparatus and method selectively vary only gains of some channels in a plurality of channels in order to allow an audio signal applied to a pulse width modulator to have a different level in individual channels in a prescribed system condition (e.g., overload). The multi-channel PWM apparatus can selectively enable a subset among a plurality of pulse width modulators to reduce unnecessary driving and noise. Thus, preferred embodiments can reduce or prevent deterioration of output audio signals.
摘要:
A multi-chip semiconductor memory device includes of a plurality of memory chips sharing a predetermined chip enable signal. Each of the plurality of memory chips includes an active internal power supply generation circuit configured to convert an external power supply voltage into an internal power supply voltage and to be disabled in response to deactivation of a predetermined drive control signal. Each of the plurality of memory chips also includes a conversion control circuit for generating the drive control signal, wherein the drive control signal is deactivated in an interval in which any of the plurality of memory chips is in an active interval.
摘要:
A multi-chip semiconductor memory device may comprise of a plurality of memory chips sharing a predetermined chip enable signal. Each of the plurality of memory chips may comprise of an active internal power supply generation circuit configured to convert an external power supply voltage into an internal power supply voltage and to be disabled in response to deactivation of a predetermined drive control signal. Each of the plurality of memory chips may also comprise of a conversion control circuit for generating the drive control signal, wherein the drive control signal is deactivated in an interval in which any of the plurality of memory chips is in an active interval.
摘要:
Provided is a programming method in a flash memory device. The programming method applies a first pass voltage to a selection word line and a non-selection word line, applies a local voltage to the non-selection word line, applies a second pass voltage to the selection word line, and applies a programming voltage to the selection word line.
摘要:
A method and apparatus for controlling two or more non-volatile memory devices includes activating a read enable signal or a write enable signal, which is input to the first and second non-volatile memory devices, using a controller. A first chip enable signal is alternately activated for selecting the first non-volatile memory device and a second chip enable signal is activated for selecting the second non-volatile memory device using the controller. This is done while the read enable signal or the write enable signal is input to the first and second non-volatile memory devices being activated. Accordingly, even when the minimum cycle of the controller is longer than that of a memory device read/write time is reduced, thereby improving read/write performance.