Telefonaktiebolaget Lm Ericsson (publ)

Johan Georg Michael Uggmark

Heino Jean Wendelrup

Anders Khullar

Andreas Anyuru

Ulf Christian Bj&ouml;rkengren

Lars Engelin

Johan Nordstr&ouml;m

Claes G&ouml;ran Pehrsson

Ola Martin Sallenhag

A method of operating a signal processing apparatus () comprises receiving a first signal representing a received data bit, determining from the first signal a first soft data bit, storing the first soft data bit in a leaky storage device (), receiving a second signal representing the received data bit, and determining from the second signal a second soft data bit. The stored first soft data bit is read from the leaky storage device (), an elapsed leakage time of the stored first soft data bit is measured, and a third soft data bit is generated dependent on the stored first soft data bit read from the leaky storage device () and on the elapsed leakage time. A fourth soft data bit is generated by combining the second soft data bit and the third soft data bit, and the received data bit is decoded dependent on the fourth soft data bit and on a selected plurality of further received data bits.

Signal processing apparatus and method

A microphone is provided in a mobile terminal and is connected to a current source when the flip portion of the mobile terminal is open and is disconnected from the current source when the flip portion of the phone is closed. The mobile terminal can then infer the position of the flip portion of the housing, e.g., opened or closed, based upon the state of the microphone's current supply circuit, for example by detecting the current flowing through the circuit or a voltage drop across a supply resistor. In addition, an on-hook/off-hook button can be provided to a hands-free accessory without increasing a number of signal lines/connections between the hands-free accessory and the mobile terminal. This can be accomplished, for example, by connecting the on-hook/off-hook button to a switch in the microphone signal line. The switch selectively creates an open in the microphone signal line, which can be detected by the mobile terminal, thereby resulting in an off-hook condition. In addition, an interface between a mobile terminal and other auxiliary or accessory devices can be generalized to accommodate either digital or analog signaling without an increase in the number of pins/signal lines associated with the interface.

Mobile terminal interface

A method and system for communicating data between an integrated circuit and each of a first device and a second device. Communications between the integrated circuit and the first device use a first interface protocol, while communications between the integrated circuit and the second device use a second interface protocol. Both interface protocols, however, share the same data bus and clock bus. To communicate using the second interface protocol, the first device, which uses the first interface protocol, is first deactivated by sending address data via the shared data bus that does not identify the first device, thereby causing the first device to enter an inactive state until a stop condition is detected on the shared data bus. Then, communications using the second interface protocol can be carried out, provided that a start or stop condition for the first interface protocol is not inadvertently generated on the shared data bus.

Method and system for multiplexing a second interface on an I2C interface

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Lund, Sweden

Johan Georg Michael Uggmark