Sandisk Technologies Inc.

Meytal Soffer

Bahman Qawami

Farshid Sabet-Sharghi

Ron Barzilai

Po Yuan

Mei Yan

Henry Hutton

Haluk Tanik

Robert Chin-Tse Chang

Patricia Dwyer

Rotem Sela

Evgeny Mekhanik

Asher Druck

Noam Even-Chen

A data storage device and method are disclosed for bypassing a read-only mode to allow user data backup. In one embodiment, a data storage device is provided comprising a memory and one or more processors. The one or more processors, individually or in combination, are configured to: enter a read-only mode, wherein the read-only mode prevents performance of a write operation needed for a host to boot and back-up data stored in the memory; receive a command from a host to bypass the read-only mode; and in response to receiving the command, bypass the read-only mode to allow performance of the write operation needed for the host to boot and back-up data stored in the memory. Other embodiments are provided.

Data storage device and method for bypassing a read-only mode to allow user data backup

A data storage device has a cache and a non-volatile memory. Instead of flushing the entire cache to the non-volatile memory in response to a command from a host, the data storage device flushes only the cached data that is associated with an identifier provided by the host. This allows the cached data associated with the identifier to be flushed more quickly. The data storage device can also prioritize queued commands that are associated with the identifier.

Data storage device and method for reducing flush latency

Methods for transmitting application specific or extended commands between a host and a memory card are disclosed. Commands for an extended card protocol are embedded in messages, along with a marker, in the data or command portion of a base card transmission protocol that is used to communicate between the host and the memory card. This allows for the transmission of application specific commands that lack a corresponding command in the base card protocol. The method can be implemented on the host side at the device driver level or the file level. In order to implement a read command in the extended card protocol, a write command in the base card protocol with an encapsulated read command in the extended protocol is first sent to a logical address, followed by a read command to the same logical address. Message set identifiers associate embedded commands and data received in separate transmissions.

Media card command pass through methods

Growing community of inventors

Ein Ya'kov, Israel

Meytal Soffer