Samsung Electronics Co., Ltd.

Sam-Yong Bahng

Jin-Hyeok Choi

Chil-Hee Chung

Sung-Ho Park

Seok-won Heo

Sang-Bum Kim

Kui-Yon Mun

Sang-Hee Lee

Sang-Wook Kang

Min-Soo Kang

Chang-il Son

Jong-Keun Ahn

Chang-Duck Lee

Si-Yung Park

Won-tae Kim

Yong-Ji Kim

Jong-keun Ahn

Sin-Ho Yang

Tae-Jin Yoo

Suk-Ki Kim

A memory card includes a non-volatile memory; and a power management unit for receiving an external supply voltage to supply an operating voltage to the non-volatile memory. The power management unit boosts/bypasses the external supply voltage based on whether the external supply voltage is lower than a detection voltage and then outputs the boosted/bypassed voltage as the operating voltage of the non-volatile memory.

Portable data storage apparatus

An apparatus for controlling data exchange with a memory device includes an interface configured to receive an arbitration signal indicating when the apparatus has use of a shared bus and an interface to the memory device configured to provide a clock signal to the memory device that synchronizes data exchange between the apparatus and the memory device. A selection circuit selectively supplies the clock signal to the memory device responsive to the arbitration signal.

Apparatus and methods for controlling output of clock signal and systems including the same

A portable system, method thereof, and a power consumption controller for controlling power consumption in a portable system are described. The portable system may include a storage unit, a module processing data, and a controller regulating power supplied to the module. The controller may regulate the module to perform a backup operation when a power saving mode begins and to interrupt the power after the backup operation is completed.

System and apparatus for allowing data of a module in power saving mode to remain accessible

Computer systems and related methods are provided for managing connections to storage devices. The computer system includes a connector and a register. The connector includes a plurality of pins configured to be removably connected to a first storage device and to a second storage device. A first pin of the connector carries a signal that indicates when the connector is connected to the first storage device, and a second pin carries a signal that indicates when the connector is connected to the second storage device. The register stores connection information that indicates whether the first storage device and/or the second storage device are connected to the connector.

Determining storage device connection information for serial and parallel computer interfaces to storage devices

A memory card including a pad, a drive circuit activating the pad in accordance with an input signal, and a controller regulating a drive voltage level and a drive point of an output signal generated from the drive circuit in accordance with a voltage level of the output signal of the drive circuit. The controller may include a delay circuit, generating a second clock signal by delaying a first clock signal provided from an external source and generating a second clock signal from the first clock signal. The controller may further include a detection circuit capturing the voltage level of the output signal of the drive circuit as a first detection voltage in sync with the first clock signal and capturing the voltage level of the output signal of the drive circuit as a second detection voltage in sync with the second dock signal. The controller may additionally include a drive control circuit regulating the drive voltage level and the drive point of the output signal of the drive circuit in response to the first and second detection voltages.

Memory card, data driving method thereof, and memory card system including the same

A semiconductor device card, such as a memory card for example, includes a semiconductor device, a working voltage indicator, and a working voltage generator. A working voltage indicator is set to indicate a desired level of a working voltage corresponding to the semiconductor device. A working voltage generator generates the working voltage having the desired level and being coupled to the semiconductor device. Thus, the semiconductor device card is easily adaptable to accommodate various working voltages of the semiconductor device.

Semiconductor device card providing multiple working voltages

A data storage circuit and a data preservation method for preserving data when a semiconductor device is in a sleep mode using a test scan chain are provided, where the data storage circuit includes a sleep mode control unit and a scan chain unit, the sleep mode control unit outputs a scan control signal and a scan clock signal in response to one of a test control signal and a sleep mode control signal received from the outside, stores an output data signal in a memory when the output data signal is received, and outputs a test pattern data signal as a scan data signal when the test pattern data signal is received, the scan chain unit outputs a normal data signal stored inside of the scan chain unit as the output data signal to the sleep mode control unit or receives and outputs the scan data signal to a combinational circuit unit in response to the scan control signal and the scan clock signal, and the data storage circuit and the data preservation method prevent a loss of data in a sleep mode of a semiconductor device, and reduce power consumption in a standby state.

Circuit and method for preserving data in sleep mode of semiconductor device using test scan chain

A removable memory card can include a plurality of connector contacts including a Universal Serial Bus (USB) controller module power contact and a separate controller module power contact configured to provide separate mutually exclusively applied voltage to the removable memory card.

Removable memory cards including USB and other controllers, connectors, and methods of operating same

A memory card including a non-volatile memory and a power management unit for receiving an external supply voltage to supply an operating voltage to the non-volatile memory, wherein when the external supply voltage is lower than a detection voltage, the power management unit boosts the external supply voltage and outputs the boosted voltage as the operating voltage of the non-volatile memory.

An improved dual slope integrating analog-to-digital converter for use in a Digital Multi-Meter includes an input portion, an A/D core portion, and a digital portion. The A/D core portion includes an auto zero function capability for automatically compensating for any existing offset voltages in various measurement modes such as voltage, resistance, or current measurement modes. The improved A/D converter of the present invention operates at high speed and with high resolution.

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Sungnam-si, South Korea

Sam-Yong Bahng