An ink pad container is detachably disposed on a fixing seat of a stamp and has a body. The body has a chamber formed in the body, a bottom surface, two opposite side surfaces, a front surface, an opening formed in the bottom surface of the body and communicating with the chamber, two positioning portions formed in the two opposite side surfaces of the body respectively, a front recess formed in the front surface of the body, a front stopper formed across the front recess of the body, and a front guiding groove formed between the front stopper and the front recess. The replacement of the ink pad container is made convenient and stable by the front stopper with single-point forcing.

A method includes producing a stamp impression with UV-curable ink with a preferably self-inking stamp. A stamp for this purpose, includes a text plate with the negative stamp impression is moved from a resting position into a stamping position, whereby in the stamping position the stamp impression with the ink is produced on a preferably smooth surface of a document or object or workpiece, and then the text plate is returned to the resting position, wherein a controller is activated, wherein for the curing of the ink at least one or several irradiation sources arranged on the stamp is or are, respectively, switched on, with UV rays aligned in the direction of a printing surface.

A method is provided for extending the frequency band of an audio signal during a decoding or improvement process. The method includes obtaining the decoded signal in a first frequency band, referred to as a low band. Tonal components and a surround signal are extracted from the signal from the low-band signal, and the tonal components and the surround signal are combined by adaptive mixing using energy-level control factors to obtain an audio signal, referred to as a combined signal. The low-band decoded signal before the extraction step or the combined signal after the combination step are extended over at least one second frequency band which is higher than the first frequency band. Also proved are a frequency-band extension device which implements the described method and a decoder including a device of this type.

A method is provided for extending the frequency band of an audio signal during a decoding or improvement process. The method includes obtaining the decoded signal in a first frequency band, referred to as a low band. Tonal components and a surround signal are extracted from the signal from the low-band signal, and the tonal components and the surround signal are combined by adaptive mixing using energy-level control factors to obtain an audio signal, referred to as a combined signal. The low-band decoded signal before the extraction step or the combined signal after the combination step are extended over at least one second frequency band which is higher than the first frequency band. Also proved are a frequency-band extension device which implements the described method and a decoder including a device of this type.

A handle assembly adapted to be mounted on a driving member of a stamp has a knob body and an extending portion. The knob body has a bowl-shaped head, a central post, and a fixing seat. The extending portion has a ball joint, a collar, and a fixing plate. The ball joint is engaged with and encloses the bowl-shaped head, the collar surrounds the central post, and the fixing plate is mounted in a slot of the fixing seat. The extending handle is mounted on a top of the knob body firmly by the engagement between the ball joint and the bowl-shaped head.

A method is provided for extending the frequency band of an audio signal during a decoding or improvement process. The method includes obtaining the decoded signal in a first frequency band, referred to as a low band. Tonal components and a surround signal are extracted from the signal from the low-band signal, and the tonal components and the surround signal are combined by adaptive mixing using energy-level control factors to obtain an audio signal, referred to as a combined signal. The low-band decoded signal before the extraction step or the combined signal after the combination step are extended over at least one second frequency band which is higher than the first frequency band. Also proved are a frequency-band extension device which implements the described method and a decoder including a device of this type.

A method is provided for extending the frequency band of an audio signal during a decoding or improvement process. The method includes obtaining the decoded signal in a first frequency band, referred to as a low band. Tonal components and a surround signal are extracted from the signal from the low-band signal, and the tonal components and the surround signal are combined by adaptive mixing using energy-level control factors to obtain an audio signal, referred to as a combined signal. The low-band decoded signal before the extraction step or the combined signal after the combination step are extended over at least one second frequency band which is higher than the first frequency band. Also proved are a frequency-band extension device which implements the described method and a decoder including a device of this type.

A positioning device for an ink pad container has a body and two elastic sheets. The two elastic sheets are respectively formed on two lateral side surfaces of the body. Each one of the two elastic sheets has an arm and a positioning protrusion. The arm is formed on a corresponding one of the two lateral side surfaces of the body, and is inserted into a corresponding one of two through grooves of the body. The positioning protrusion is formed on an inner side surface of the arm and is inserted into the body. An ink pad container may be firmly positioned into the body by the two elastic sheets. The tolerance allowances of the positioning device and the ink pad container are increased by the resiliences of the two elastic sheets. The positioning device can simultaneously satisfy the requirements for ease in assembly and for the positioning stability.

A method is provided for extending the frequency band of an audio signal during a decoding or improvement process. The method includes obtaining the decoded signal in a first frequency band, referred to as a low band. Tonal components and a surround signal are extracted from the signal from the low-band signal, and the tonal components and the surround signal are combined by adaptive mixing using energy-level control factors to obtain an audio signal, referred to as a combined signal. The low-band decoded signal before the extraction step or the combined signal after the combination step are extended over at least one second frequency band which is higher than the first frequency band. Also proved are a frequency-band extension device which implements the described method and a decoder including a device of this type.

A method is provided for extending the frequency band of an audio signal during a decoding or improvement process. The method includes obtaining the decoded signal in a first frequency band, referred to as a low band. Tonal components and a surround signal are extracted from the signal from the low-band signal, and the tonal components and the surround signal are combined by adaptive mixing using energy-level control factors to obtain an audio signal, referred to as a combined signal. The low-band decoded signal before the extraction step or the combined signal after the combination step are extended over at least one second frequency band which is higher than the first frequency band. Also proved are a frequency-band extension device which implements the described method and a decoder including a device of this type.